^[1]

$ 169.7

$ 414.0

$ 708.6

Accounting Standards Update 2016-09 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]

^[1]

$ 578.3

$ (343.2)

240.4

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

0.5

Business and Summary Of Significant Accounting Policies

$ 0.5

[1]

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common stock and additional paid-in capital	Accumulated other comprehensive loss	Retained earnings (Accumulated deficit)
Balance (in shares) at Jan. 31, 2014		226.7
Beginning Balance at Jan. 31, 2014	$ 2,261.5	$ 1,637.3	$ (0.6)	$ 624.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued under stock plans (in shares)		7.2
Common shares issued under stock plans	135.4	$ 135.4
Stock-based compensation expense	165.6	$ 165.6
Net (loss) income	81.8			81.8
Other comprehensive (loss)	(52.7)		(52.7)
Repurchase and retirement of common shares (in shares)		(6.9)
Repurchase and retirement of common shares	(372.4)	$ (165.2)		(207.2)
Balance (in shares) at Jan. 31, 2015		227.0
Ending Balance at Jan. 31, 2015	2,219.2	$ 1,773.1	(53.3)	499.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued under stock plans (in shares)		5.9
Common shares issued under stock plans	59.2	$ 59.2
Stock-based compensation expense	197.2	$ 197.2
Net (loss) income	(330.5)			(330.5)
Other comprehensive (loss)	(67.8)		(67.8)
Repurchase and retirement of common shares (in shares)		(8.5)
Repurchase and retirement of common shares	(458.0)	$ (208.3)		(249.7)
Tax benefits from employee stock plans	$ 0.3	$ 0.3
Balance (in shares) at Jan. 31, 2016	224.4	224.4
Ending Balance at Jan. 31, 2016	$ 1,619.6	$ 1,821.5	(121.1)	(80.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued under stock plans (in shares)		5.6
Common shares issued under stock plans	43.4	$ 43.4
Stock-based compensation expense	221.8	$ 221.8
Net (loss) income	(582.1)			(582.1)
Other comprehensive (loss)	(57.4)		(57.4)
Repurchase and retirement of common shares (in shares)		(9.7)
Repurchase and retirement of common shares	(631.6)	$ (217.3)		(414.3)
Cumulative effect of accounting changes	$ 119.9	$ 6.9		113.0
Balance (in shares) at Jan. 31, 2017	220.3	220.3
Ending Balance at Jan. 31, 2017	$ 733.6	$ 1,876.3	$ (178.5)	$ (964.2)

Business and Summary of Significant Accounting Policies

12 Months Ended

Jan. 31, 2017

Accounting Policies [Abstract]

Business and Summary of Significant Accounting Policies

Business

Autodesk, Inc. (“Autodesk” or the “Company”) is a world leading design software and services company, offering customers productive business solutions through powerful technology products and services. The Company serves customers in the architecture, engineering, and construction; manufacturing; and digital media, consumer, and entertainment industries. The Company’s sophisticated software products enable its customers to experience their ideas before they are real by allowing them to imagine, design, and create their ideas and to visualize, simulate, and analyze real-world performance early in the design process by creating digital prototypes. These capabilities allow Autodesk’s customers to foster innovation, optimize and improve their designs, help save time and money, improve quality, and collaborate with others. Autodesk software products are sold globally, both directly to customers and through a network of resellers and distributors.

Principles of Consolidation

The accompanying consolidated financial statements include the accounts of Autodesk and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.

Segments

Through the second quarter of fiscal 2017, Autodesk had four operating and reportable segments: Architecture, Engineering, and Construction (“AEC”), Manufacturing (“MFG”), Platform Solutions and Emerging Business (“PSEB”), and Media and Entertainment (“M&E”).

During the third quarter of fiscal 2017, as a result of changes in our organizational structure from the business model transition and various other factors described further in Note 13, "Segments," management determined the Company operates as a single operating segment and single reporting unit. However, the Company will continue to provide disaggregation of revenue by product family and geographical information within Note 13, "Segments."

Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the amounts reported in Autodesk’s consolidated financial statements and notes thereto. These estimates are based on information available as of the date of the consolidated financial statements. On a regular basis, management evaluates these estimates and assumptions. Actual results may differ materially from these estimates.

Examples of significant estimates and assumptions made by management involve the determination of the fair value of acquired assets and liabilities, goodwill, financial instruments, long-lived assets and other intangible assets, the realizability of deferred tax assets, and the fair value of stock awards. The Company also makes assumptions, judgments, and estimates in determining the accruals for uncertain tax positions, variable compensation, partner incentive programs, product returns reserves, allowances for doubtful accounts, asset retirement obligations, and legal contingencies.

Foreign Currency Translation and Transactions

The assets and liabilities of Autodesk’s foreign subsidiaries are translated from their respective functional currencies into U.S. dollars at the rates in effect at the balance sheet date, and revenue and expense amounts are translated at exchange rates that approximate those rates in effect during the period in which the underlying transactions occur. Foreign currency translation adjustments are recorded as other comprehensive (loss) income.

Gains and losses realized from foreign currency transactions, those transactions denominated in currencies other than the foreign subsidiary’s functional currency, are included in interest and other income, net. Monetary assets and liabilities are remeasured using foreign currency exchange rates at the end of the period, and non-monetary assets are remeasured based on historical exchange rates.

Derivative Financial Instruments

Under its risk management strategy, Autodesk uses derivative instruments to manage its short-term exposures to fluctuations in foreign currency exchange rates which exist as part of ongoing business operations. Autodesk’s general practice is to hedge a majority of transaction exposures denominated in euros, Japanese yen, Swiss francs, British pounds, Canadian dollars, and Australian dollars. These instruments have maturities between one to 12 months in the future. Autodesk does not enter into any derivative instruments for trading or speculative purposes.

The bank counterparties in all contracts expose Autodesk to credit-related losses in the event of their nonperformance. However, to mitigate that risk, Autodesk only contracts with counterparties who meet the Company’s minimum requirements under its counterparty risk assessment process. Autodesk monitors ratings, credit spreads, and potential downgrades on at least a quarterly basis. Based on Autodesk’s on-going assessment of counterparty risk, the Company will adjust its exposure to various counterparties. Autodesk generally enters into master netting arrangements, which reduce credit risk by permitting net settlement of transactions with the same counterparty. However, Autodesk does not have any master netting arrangements in place with collateral features.

Autodesk accounts for its derivative instruments as either assets or liabilities on the balance sheet and carries them at fair value. Gains and losses resulting from changes in fair value are accounted for depending on the use of the derivative and whether it is designated and qualifies for hedge accounting. Derivatives that do not qualify for hedge accounting are adjusted to fair value through earnings. See Note 2, "Financial Instruments" for information regarding Autodesk's hedging activities.

Cash and Cash Equivalents

Autodesk considers all highly liquid investments with insignificant interest rate risk and remaining maturities of three months or less at the date of purchase to be cash equivalents. Cash equivalents are recorded at cost, which approximates fair value.

Marketable Securities and Privately Held Company Investments

Marketable securities are stated at fair value. Marketable securities maturing within one year that are not restricted are classified as current assets. Substantially all marketable debt and equity investments held by Autodesk are classified as current based on the nature of the investments and their availability for use in current operations.

Autodesk determines the appropriate classification of its marketable securities at the time of purchase and re-evaluates such classification as of each balance sheet date. Autodesk carries all “available-for-sale securities” at fair value, with unrealized gains and losses, net of tax, reported in stockholders’ equity until disposition or maturity. Autodesk carries all “trading securities” at fair value, with unrealized gains and losses, recorded in “Interest and other income, net” in the Company’s Consolidated Statements of Operations. The cost of securities sold is based on the specific-identification method.

Autodesk regularly invests in non-marketable debt and equity securities of privately held companies. The carrying values of such investments are included in other long-term assets. For the majority of our privately held company investments, we use the cost method of accounting.

All of Autodesk’s marketable securities and privately held company investments are subject to a periodic impairment review. The Company recognizes an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary. Autodesk considers various factors in determining whether to recognize an impairment charge, including the length of time and extent to which the fair value has been less than Autodesk’s cost basis, the financial condition and near-term prospects of the investee, and Autodesk’s intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in the market value. For additional information, see “Concentration of Credit Risk” within this Note 1 and Note 2, “Financial Instruments.”

Accounts Receivable, Net

Accounts receivable, net, consisted of the following as of January 31:



	2017			2016
Trade accounts receivable	$	477.5		$	700.1
Less: Allowance for doubtful accounts	(1.5		)	(7.6		)
Product returns reserve	(0.2		)	(1.6		)
Partner programs and other obligations	(23.5		)	(37.3		)
Accounts receivable, net	$	452.3		$	653.6

Allowances for uncollectible trade receivables are based upon historical loss patterns, the number of days that billings are past due, and an evaluation of the potential risk of loss associated with problem accounts.

The product returns reserves are based on historical experience of actual product returns, estimated channel inventory levels, the timing of new product introductions, channel sell-in for applicable markets, and other factors.

As part of the indirect channel model, Autodesk has a partner incentive program that uses quarterly attainment of monetary rewards to motivate distributors and resellers to achieve mutually agreed upon business goals in a specified time period. A portion of these incentives reduce license and other revenue in the current period. The remainder, which relates to incentives on our Subscription Program, is recorded as a reduction to deferred revenue in the period the subscription transaction is billed and subsequently recognized as a reduction to subscription revenue over the contract period. These incentive balances do not require significant assumptions or judgments. Depending on how the payments are made, the reserves associated with the partner incentive program are treated on the balance sheet as either contra account receivable or accounts payable.

Concentration of Credit Risk

Autodesk places its cash, cash equivalents, and marketable securities in highly liquid instruments with, and in the custody of, multiple diversified financial institutions globally with high credit ratings and limits the amounts invested with any one institution, type of security, and issuer.

Geographical concentrations of consolidated cash, cash equivalents, and marketable securities held by Autodesk as of January 31:



	2017		2016
United States	9	%	26	%
Other Americas	1	%	1	%
Europe, Middle East, and Africa (“EMEA”)	80	%	50	%
Asia Pacific (“APAC”)	10	%	23	%

Autodesk’s primary commercial banking relationship is with Citigroup Inc. and its global affiliates. Citibank, N.A., an affiliate of Citigroup, is one of the lead lenders and an agent in the syndicate of Autodesk’s $400.0 million line of credit facility. It is Autodesk’s policy to limit the amounts invested with any one institution by type of security and issuer.

Autodesk’s accounts receivable are derived from sales to a large number of resellers, distributors, and direct customers in the Americas; EMEA; and APAC geographies. Autodesk performs ongoing evaluations of these partners' financial condition and limits the amount of credit extended when deemed necessary, but generally does not require collateral from such parties. Total sales to the Company's largest distributor Tech Data Corporation, and its global affiliates (“Tech Data”), accounted for 30%, 25%, and 25% of Autodesk's net revenue for fiscal years ended January 31, 2017, 2016, and 2015, respectively. The majority of the net revenue from sales to Tech Data is for sales made outside of the United States. In addition, Tech Data accounted for 20% and 22% of trade accounts receivable as of January 31, 2017 and 2016, respectively.

Computer Equipment, Software, Furniture, and Leasehold Improvements, Net

Computer equipment, software, and furniture are depreciated using the straight-line method over the estimated useful lives of the assets, which range from three to five years. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the lease term. Depreciation expense was $73.1 million in fiscal 2017, $60.6 million in fiscal 2016, and $52.1 million in fiscal 2015.

Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation at January 31 were as follows:



	2017			2016
Computer hardware, at cost	$	206.1		$	202.7
Computer software, at cost	73.5			85.6
Leasehold improvements, land and buildings, at cost	206.3			202.9
Furniture and equipment, at cost	58.2			59.0
Computer software, hardware, leasehold improvements, furniture, and equipment, at cost	544.1			550.2
Less: Accumulated depreciation	(385.5		)	(380.9		)
Computer software, hardware, leasehold improvements, furniture, and equipment, net	$	158.6		$	169.3

Costs incurred for computer software developed or obtained for internal use are capitalized for application development activities, if material, and immediately expensed for preliminary project activities and post-implementation activities. These capitalized costs are amortized over the software’s expected useful life, which is generally three years.

Software Development Costs

Software development costs incurred prior to the establishment of technological feasibility are included in research and development expenses. Autodesk defines establishment of technological feasibility as the completion of a working model. Software development costs incurred subsequent to the establishment of technological feasibility through the period of general market availability of the products are capitalized and generally amortized over a three year period, if material. Autodesk had no material capitalized software development costs at January 31, 2017 and January 31, 2016.

Other Intangible Assets, Net

Other intangible assets include developed technologies, customer relationships, trade names, patents, user lists and the related accumulated amortization. These assets are shown as “Developed technologies, net” and as part of “Other assets” in the Consolidated Balance Sheet. The majority of Autodesk’s other intangible assets are amortized to expense over the estimated economic life of the product, which ranges from one to ten years. Amortization expense for developed technologies, customer relationships, trade names, patents, and user lists was $72.2 million in fiscal 2017, $82.6 million in fiscal 2016 and $92.9 million in fiscal 2015.

Other intangible assets and related accumulated amortization at January 31 were as follows:



	2017			2016
Developed technologies, at cost	$	583.6		$	571.4
Customer relationships, trade names, patents, and user lists, at cost (1)	375.9			371.6
Other intangible assets, at cost (2)	959.5			943.0
Less: Accumulated amortization	(862.0		)	(796.2		)
Other intangible assets, net	$	97.5		$	146.8

_______________


(1)	Included in “Other assets” in the accompanying Consolidated Balance Sheets.


(2)	Includes the effects of foreign currency translation.

The weighted average amortization period for developed technologies, customer relationships, and trade names during fiscal 2017 was 4.6 years. Excluding in-process research and development, expected future amortization expense for developed technologies, customer relationships, trade names, patents, and user lists for each of the fiscal years ended thereafter is as follows:



	Fiscal Year ended January 31,
2018	$	37.2
2019	28.9
2020	16.7
2021	8.3
2022	3.7
Thereafter	0.1
Total	$	94.9

Goodwill

Goodwill consists of the excess of the consideration transferred over the fair value of net assets acquired in business combinations. Autodesk tests goodwill for impairment annually in its fourth fiscal quarter or more often if circumstances indicate a potential impairment may exist, or if events have affected the composition of reporting units.

When goodwill is assessed for impairment, Autodesk has the option to perform an assessment of qualitative factors of impairment (“optional assessment”) prior to necessitating a two-step quantitative impairment test. Should the optional assessment be used for any given fiscal year, qualitative factors to consider include cost factors; financial performance; legal, regulatory, contractual, political, business, or other factors; entity specific factors; industry and market considerations, macroeconomic conditions, and other relevant events and factors affecting the reporting unit. If, after assessing the totality of events or circumstances, it is more likely than not that the fair value of the reporting unit is greater than its carrying value, then performing the two-step impairment test is unnecessary.

Therefore, the two-step quantitative impairment test is necessary when either Autodesk does not utilize the optional assessment or, as a result of the optional assessment, it is not more likely than not that the fair value of the reporting unit is greater than its carrying value. The first step of the goodwill impairment test identifies if there is potential goodwill impairment. If step one indicates that an impairment may exist, a second step is performed to measure the amount of the goodwill impairment, if any. Goodwill impairment exists when the estimated fair value of goodwill is less than its carrying value. If impairment exists, the carrying value of the goodwill is reduced to fair value through an impairment charge recorded in our statements of operations. The process of evaluating the potential impairment of goodwill is subjective and requires significant judgment at many points during the analysis. The value of Autodesk’s goodwill could also be impacted by future adverse changes such as: (i) declines in Autodesk’s actual financial results, (ii) a sustained decline in Autodesk’s market capitalization, (iii) significant slowdown in the worldwide economy or the industries Autodesk serves, or (iv) changes in Autodesk’s business strategy.

As described in Note 13, "Segments" commencing in the third quarter of fiscal 2017, Autodesk changed its segment reporting as it now operates as a single operating segment and single reporting unit. In situations in which an entity's reporting unit is publicly traded, the fair value for step one of the impairment test may be approximated by the entity's market capitalization. For the annual impairment test, Autodesk's market capitalization was substantially in excess of the carrying value of the Company as of January 31, 2017. Accordingly, Autodesk has determined there was no goodwill impairment during the year ended January 31, 2017. In addition, Autodesk did not recognize any goodwill impairment losses in fiscal 2016 or 2015.

The change in the carrying amount of goodwill during the fiscal years ended January 31, 2017 and January 31, 2016 were as follows:



	2017			2016
Goodwill, beginning of the year	$	1,684.2		$	1,605.4
Less: accumulated impairment losses, beginning of the year	(149.2		)	(149.2		)
Additions arising from acquisitions during the year (1)	62.8			97.3
Effect of foreign currency translation, measurement period adjustments, and other (2)	(36.7		)	(18.5		)
Goodwill, end of the year	$	1,561.1		$	1,535.0

_______________


(1)	The fiscal 2016 balance has not been adjusted here for measurement period adjustments made in fiscal 2017. Refer to Note 5, "Acquisitions" for additional information on the amounts recorded in fiscal 2017 that relate to goodwill from fiscal 2016 acquisitions.


(2)	Purchase accounting adjustments reflect revisions made to the Company’s preliminary purchase price allocations during fiscal 2017 and 2016.

Impairment of Long-Lived Assets

At least annually or more frequently as circumstances dictate, Autodesk reviews its long-lived assets for impairment whenever impairment indicators exist. Autodesk continually monitors events and changes in circumstances that could indicate the carrying amounts of its long-lived assets may not be recoverable. When such events or changes in circumstances occur, Autodesk assesses recoverability of these assets. Recoverability is measured by comparison of the carrying amounts of the assets to the future undiscounted cash flows the assets are expected to generate. If the long-lived assets are considered to be impaired, the impairment to be recognized is equal to the amount by which the carrying value of the assets exceeds its fair market value. Autodesk did not recognize any material impairments of long-lived assets during the fiscal years ended January 31, 2017, 2016, and 2015, respectively.

In addition to the recoverability assessments, Autodesk routinely reviews the remaining estimated useful lives of its long-lived assets. Any reduction in the useful life assumption will result in increased depreciation and amortization expense in the quarter when such determinations are made, as well as in subsequent quarters.

Deferred Tax Assets

Deferred tax assets arise primarily from tax credits, net operating losses, and timing differences for reserves, accrued liabilities, stock options, deferred revenue, purchased technologies, and capitalized intangibles, partially offset by U.S. deferred tax liabilities on unremitted earnings from certain foreign subsidiaries, acquired intangibles, and valuation allowances against U.S. and foreign deferred tax assets. Autodesk performed a quarterly assessment of the recoverability of these net deferred tax assets and believe that we will generate sufficient future taxable income in appropriate tax jurisdictions to realize the net deferred tax assets. They are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to reverse. Valuation allowances are established when necessary to reduce gross deferred tax assets to the amount that is "more likely than not" to be realized.

Revenue Recognition

Autodesk recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, and collection is probable.

For multiple element arrangements containing only software and software-related elements, Autodesk allocates the sales price among each of the deliverables using the residual method, under which a portion of the total arrangement consideration is allocated to undelivered elements based on their vendor-specific objective evidence (“VSOE”) of fair value and the remainder or residual of the total consideration is recognized as revenue for the delivered elements. VSOE is the price charged when an element is sold separately or a price set by management with the relevant authority. If Autodesk does not have VSOE of an undelivered element, revenue recognition is deferred on the entire sales arrangement until all elements for which Autodesk does not have VSOE are delivered. If Autodesk does not have VSOE for undelivered product subscriptions, maintenance or services, the total consideration for the arrangement is recognized ratably over the longest contractual service period in the arrangement.

For multiple element arrangements involving non-software elements, including cloud subscription services, our revenue recognition policy is based upon the accounting guidance contained in ASC 605, Revenue Recognition. For these arrangements, Autodesk first allocates the total arrangement consideration based on the relative selling prices of the software group of elements as a whole and the non-software elements. Autodesk then further allocates consideration within the software group to the respective elements within that group using the residual method as described above. Autodesk exercises judgment and uses estimates in connection with the determination of the amount of revenue to be recognized in each accounting period.

Autodesk allocates the total arrangement consideration among the various elements based on a selling price hierarchy. The selling price for a deliverable is based on its VSOE if available, third-party evidence ("TPE") if VSOE is not available, or the best estimated selling price ("BESP") if neither VSOE nor TPE is available. BESP represents the price at which Autodesk would transact for the deliverable if it were sold regularly on a standalone basis. To establish BESP for those elements for which neither VSOE nor TPE are available, Autodesk performs a quantitative analysis of pricing data points for historical standalone transactions involving such elements for a twelve-month period. As part of this analysis, Autodesk monitors and evaluates the BESP against actual pricing to ensure that it continues to represent a reasonable estimate of the standalone selling price, considering several other external and internal factors including, but not limited to, pricing and discounting practices, contractually stated prices, the geographies in which Autodesk offers products and services, and the type of customer (i.e. distributor, value-added reseller, and direct end user, among others). Autodesk analyzes BESP at least annually or on a more frequent basis if a significant change in our business necessitates a more timely analysis, or if significant selling price variances are experienced.

In situations when Autodesk has multiple contracts with a single counterparty, Autodesk uses the guidance in ASC 985-605 to evaluate both the form and the substance of the arrangements to determine if they should be combined and accounted for as one arrangement or as separate arrangements.

Autodesk’s assessment of likelihood of collection is also a critical element in determining the timing of revenue recognition. If collection is not probable, the revenue will be deferred until payment is received.

Autodesk's Subscription revenue consists of two components: maintenance revenue for our software products and revenue for our cloud service offerings, including Autodesk 360. Autodesk's maintenance program provides our commercial and educational customers of perpetual products with a cost effective and predictable budgetary option to obtain the productivity benefits of our new releases and enhancements when and if released during the term of their contracts. Under Autodesk's maintenance program, customers are eligible to receive unspecified upgrades when and if available, downloadable training courses, and online support. Autodesk recognizes maintenance revenue ratably over the term of the maintenance agreement, which is generally between one and three years but can occasionally be as long as five years. Revenue for Autodesk's cloud service offerings is recognized ratably over the contract term commencing with the date Autodesk's service is made available to customers and all other revenue recognition criteria have been satisfied.

License and other revenue consists of two components: product license revenue and other revenue. Product license revenue includes software license revenue from the sale of perpetual licenses, term-based licenses from our desktop subscription and enterprise offerings, and product revenue for Creative Finishing. Other revenue includes revenue from consulting, training, Autodesk Developers Network and Creative Finishing customer support, and is recognized over time, as the services are performed.

Taxes Collected from Customers

Autodesk nets taxes collected from customers against those remitted to government authorities in the consolidated financial statements. Accordingly, taxes collected from customers are not reported as revenue.

Shipping and Handling Costs

Shipping and handling costs are included in cost of revenue for all periods presented.

Stock-based Compensation Expense

The following table summarizes stock-based compensation expense for fiscal 2017, 2016, and 2015, respectively, as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Cost of subscription	$	7.0		$	5.7		$	4.3
Cost of license and other revenue	7.1			6.1			4.6
Marketing and sales	94.1			85.2			72.4
Research and development	81.3			70.4			56.0
General and administrative	32.3			29.8			28.3
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan ("ESPP") purchases	221.8			197.2			165.6
Tax benefit	(2.6		)	(1.6		)	(45.2		)
Stock-based compensation expense related to stock awards and ESPP purchases, net	$	219.2		$	195.6		$	120.4

Autodesk determines the grant date fair value of its share-based payment awards using a Black-Scholes Merton ("BSM") option pricing model or the quoted stock price on the date of grant, unless the awards are subject to market conditions, in which case Autodesk uses a binomial-lattice model (e.g., Monte Carlo simulation model). The Monte Carlo simulation model utilizes multiple input variables to estimate the probability that market conditions will be achieved. Autodesk uses the following assumptions to estimate the fair value of stock-based awards:



	Fiscal Year Ended		Fiscal Year Ended		Fiscal Year Ended
	January 31, 2017		January 31, 2016		January 31, 2015
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	38 - 39%	30 - 40%	27%	28 -29%	30%	29 - 33%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%	—%	—%
Range of risk-free interest rates	0.6 - 0.7%	0.5 - 0.9%	0.2%	0.1 - 0.7%	0.1%	0.0 - 0.6%

Autodesk estimates expected volatility for stock-based awards based on the average of the following two measures. The first is a measure of historical volatility in the trading market for the Company’s common stock, and the second is the implied volatility of traded forward call options to purchase shares of the Company’s common stock. The expected volatility for performance stock units ("PSUs") subject to market conditions includes the expected volatility of Autodesk's peer companies within the S&P Computer Software Select Index.

Autodesk estimates the expected life of stock-based awards using both exercise behavior and post-vesting termination behavior as well as consideration of outstanding options.

Autodesk did not pay cash dividends in fiscal 2017, 2016, or 2015 and does not anticipate paying any cash dividends in the foreseeable future. Consequently, an expected dividend yield of zero is used in the BSM option pricing model and the Monte Carlo simulation model.

The risk-free interest rate used in the BSM option pricing model and the Monte Carlo simulation model for stock-based awards is the historical yield on U.S. Treasury securities with equivalent remaining lives.

Autodesk recognizes expense only for the stock-based awards that ultimately vest. As permitted by ASU 2016-09, Autodesk has elected to account for forfeitures of our stock-based awards as those forfeitures occur.

Advertising Expenses

Advertising costs are expensed as incurred. Total advertising expenses incurred were $33.6 million in fiscal 2017, $29.8 million in fiscal 2016, and $23.9 million in fiscal 2015.

Net (Loss) Income Per Share

Basic net (loss) income per share is computed based on the weighted average number of shares of common stock outstanding for the period, excluding stock options and restricted stock. Diluted net (loss) income per share is computed based upon the weighted average shares of common shares outstanding for the period and potentially dilutive common shares, including the effect of stock options and restricted stock units under the treasury stock method.

Defined Benefit Pension Plans

The funded status of Autodesk's defined benefit pension plans is recognized in the Consolidated Balance Sheets. The funded status is measured as the difference between the fair value of plan assets and the projected benefit obligation for the fiscal years presented. The projected benefit obligation represents the actuarial present value of benefits expected to be paid upon retirement based on employee services already rendered and estimated future compensation levels. The fair value of plan assets represents the current market value of Autodesk's cumulative company and participant contributions made to the various plans in effect.

Net periodic benefit cost is recorded in the Consolidated Statements of Operations and includes service cost, interest cost, expected return on plan assets, amortization of prior service costs, and gains or losses previously recognized as a component of other comprehensive income. Certain events, such as changes in the employee base, plan amendments, and changes in actuarial assumptions may result in a change in the defined benefit obligation and the corresponding change to other comprehensive income.

Gains and losses and prior service costs not recognized as a component of net periodic benefit cost in the Consolidated Statements of Operations as they arise are recognized as a component of other comprehensive (loss) income in the Consolidated Statements of Comprehensive (Loss) Income. Those gains and losses and prior service costs are subsequently amortized as a component of net periodic benefit cost over the average remaining service lives of the plan participants using a corridor approach to determine the portion of gain or loss subject to amortization.

The measurement of projected benefit obligations and net periodic benefit cost is based on estimates and assumptions that reflect the terms of the plans and use participant-specific information such as compensation, age and years of services, as well as certain assumptions, including estimates of discount rates, expected return of plan assets, rate of compensation increases, interest rates, and mortality rates.

Accounting Standards in Fiscal 2017

With the exception of those discussed below, there have been no recent changes in accounting pronouncements issued by the FASB or adopted by the Company during the fiscal year ended January 31, 2017, that are of significance, or potential significance, to the Company.

Accounting Standards Adopted

Effective in the second quarter of fiscal 2017, Autodesk adopted FASB's Accounting Standards Update No. 2016-09 ("ASU 2016-09") regarding ASC Topic 718, “Improvements to Employee Share-Based Payment Accounting.” The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement when the awards vest or are settled. In addition, cash flows related to excess tax benefits will no longer be separately classified as a financing activity apart from other income tax cash flows. The standard also increases the amount of shares an employer can withhold for tax purposes without triggering liability accounting, clarifies that all cash payments made on an employee's behalf for withheld shares should be presented as a financing activity in the statements of cash flows, and provides an entity-wide accounting policy election to account for forfeitures as they occur.

Upon adoption, under the modified retrospective transition method, the Company recognized the previously unrecognized excess tax benefits as increases in deferred tax assets for tax credit and tax loss carryovers, of which $116.5 million were available to offset liabilities for uncertain tax benefits. This reduction in liabilities for uncertain tax benefits resulted in a cumulative-effect increase of $116.5 million to the February 1, 2016, opening accumulated deficit balance. Tax attributes not available to offset uncertain tax benefits were fully offset by a valuation allowance.

Autodesk elected to account for forfeitures as they occur using a modified retrospective transition method, which resulted in a cumulative-effect adjustment of $6.9 million to reduce the February 1, 2016 opening accumulated deficit balance.

Autodesk elected to apply the change in presentation of excess tax benefits in the statements of cash flows retrospectively to all periods presented and no longer classifies them as a reduction from operating cash flows. The adoption had a $0.5 million impact to net cash provided by operating activities and net cash used in financing activities for fiscal 2015. There adoption had no impact for fiscal 2016. The retrospective presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any prior period since such cash flows have historically been presented as a financing activity. Additional amendments to the accounting for minimum statutory withholding tax requirements had no impact to opening accumulated deficit as of February 1, 2016 as Autodesk does not withhold more than the minimum statutory requirements.

Effective in the first quarter of fiscal 2017, Autodesk adopted FABS's Accounting Standards Update No. 2015-16 ("ASU 2015-05") regarding Subtopic 350-40, “Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Fees Paid in a Cloud Computing Arrangement.” The amendments in this ASU provide guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The amendments for ASU-2015-05 were prospectively applied and did not have a material impact on Autodesk's consolidated financial statements.

Effective in the first quarter of fiscal 2017, Autodesk adopted FASB's Accounting Standards Update No. 2015-07 ("ASU 2015-07") regarding ASC Topic 820 "Fair Value Measurement: Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)." The amendments in ASU 2015-07 remove the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The amendments also limit certain disclosures to investments for which the entity has elected to measure at fair value using the net asset value per share practical expedient. The amendments were applied retrospectively by removing from the fair value hierarchy any investments for which fair value is measured using the net asset value per share practical expedient. Adoption did not have a material impact on its consolidated financial statements.

Recently Issued Accounting Standards

In February 2017, FASB issued Accounting Standards Update No. 2017-05 ("ASU 2017-05"), "Other Income– Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets." The ASU, among other things, clarifies the scope of the derecognition of nonfinancial assets, the definition of in substance financial assets, and impacts the accounting for partial sales of nonfinancial assets by requiring full gain recognition upon the sale. The amendments are effective for Autodesk's fiscal year beginning February 1, 2018. The guidance may be applied retrospectively for all periods presented or retrospectively with a cumulative-effect adjustment at the date of adoption. Autodesk is currently evaluating the impact that the adoption of this guidance will have on its consolidated statements of financial condition and results of operations.

In January 2017, FASB issued Accounting Standards Update No. 2017-04 ("ASU 2017-04"), "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" which simplifies the subsequent measurement of goodwill to eliminate Step 2 from the goodwill impairment test. In addition, it eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if that fails that qualitative test, to perform Step 2 of the goodwill impairment test. Therefore, the same impairment assessment applies to all reporting units. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2020 unless Autodesk elects early adoption. The new guidance is required to be applied on a prospective basis. Autodesk does not believe ASU 2017-04 will have a material impact on its consolidated financial statements and plans to early adopt in fiscal 2018.

In January 2017, FASB issued Accounting Standards Update No. 2017-01 ("ASU 2017-01"), "Business Combinations: Clarifying the Definition of a Business" which provides a more robust framework to use in determining when a set of assets and activities is a business. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018 unless Autodesk elects early adoption, which Autodesk is still evaluating. The new guidance is required to be applied on a prospective basis. The effect of the implementation will depend upon the nature of the Company's future acquisitions, if any.

In October 2016, FASB issued Accounting Standards Update No. 2016-16 ("ASU 2016-16"), “Income Taxes: Intra-Entity Transfers of Assets Other than Inventory” which requires that entities recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018 unless Autodesk elects early adoption. The new guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact and timing of adoption.

In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. Autodesk plans to adopt ASU 2016-13 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2020 and does not believe the ASU will have a material impact on its consolidated financial statements.

In February 2016, the FASB issued Accounting Standards Update No. 2016-02 ("ASU 2016-02") regarding ASC Topic 842, "Leases." The amendments in this ASU require balance sheet recognition of lease assets and lease liabilities by lessees for leases classified as operating leases, with an optional policy election to not recognize lease assets and lease liabilities for leases with a term of 12 months or less. The amendments also require new disclosures, including qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. Autodesk plans to adopt ASU 2016-02 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2019. The amendments require a modified retrospective approach with optional practical expedients. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption.

In January 2016, the FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") regarding ASC Topic 825-10, "Financial Instruments - Overall." The amendments address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments, and require equity securities to be measured at fair value with changes in fair value recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment for impairment quarterly at each reporting period. The amendments in ASU 2016-01 will be effective for Autodesk's fiscal year beginning February 1, 2018. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, with prospective adoption of the amendments related to equity securities without readily determinable fair values existing as of the date of adoption. Autodesk does not believe ASU 2016-01 will have a material impact on its consolidated financial statements.

In May 2014, the FASB issued Accounting Standards Update No. 2014-09 ("ASU 2014-09") regarding ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2014-09 provides principles for recognizing revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued Accounting Standards Update No. 2015-14 to defer the effective date by one year with early adoption permitted as of the original effective date. In addition, the FASB issued Accounting Standards Update No. 2016-08, Accounting Standards Update No. 2016-10, Accounting Standards Update No. 2016-12, and Accounting Standard Update No. 2016-20 in March 2016, April 2016, May 2016, and December 2016, respectively, to help provide interpretive clarifications on the new guidance in ASC Topic 606.

Autodesk currently plans to adopt ASU 2014-09 as of February 1, 2018, using the modified retrospective transition method.

In terms of Autodesk's evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company's preliminary assessment is that there should be no material change in the timing and amount of the recognition of revenue for the majority of the Company's product subscription offerings and enterprise arrangements. This preliminary assessment is based on the Company's analysis that the related software and cloud services in a majority of the product subscription and enterprise offerings are not distinct in the context of the contract as they are considered highly interrelated and represent a single combined performance obligation that should be recognized over time. Due to the complexity of certain of our contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and vary in some instances.

A limited number of Autodesk's product subscriptions do not incorporate substantial cloud services, and under ASU 2014-09 will be recognized as distinct license and service performance obligations. Revenue allocated to the licenses in these offerings will be recognized at a point in time instead of over the contract term. Autodesk does not currently believe the impact of the change to timing of revenue recognition for these limited offerings will be material. The company is currently evaluating its other revenue streams, but does not believe ASU 2014-09 will have a material impact.

Furthermore, the Company has made and will continue to make investments in systems and processes to enable timely and accurate reporting under the new standard. The company currently expects that necessary operational changes will be implemented prior to the adoption date.

As part of our preliminary evaluation, Autodesk has also considered the impact of the guidance in ASC Topic 340-40, "Other Assets and Deferred Costs; Contracts with Customers," and the interpretations of the FASB Transition Resource Group for Revenue Recognition ("TRG") from their November 7, 2016 meeting with respect to capitalization and amortization of incremental costs of obtaining a contract. As a result of this new guidance, Autodesk preliminarily believes that the Company will capitalize additional costs of obtaining the contract, which primarily relates to sales commissions. The amortization period for the Company's deferred costs will be recognized over the period of benefit. Autodesk's current accounting policy is to expense such costs as incurred.

While Autodesk continues to assess the potential impacts of the new standard, including the areas described above, and disclosure requirements of the standard, Autodesk does not know or cannot reasonably estimate quantitative information related to the impact of the new standard on our financial statements except as specifically noted above.

Financial Instruments

12 Months Ended

Jan. 31, 2017

Investments, All Other Investments [Abstract]

Financial Instruments

The following tables summarize the Company's financial instruments' amortized cost, gross unrealized gains, gross unrealized losses, and fair value by significant investment category as of January 31, 2017 and 2016.



			January 31, 2017
			Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value		Level 1		Level 2		Level 3
Cash equivalents (1):
	Agency bonds		$	6.0	$	—	$	—		$	6.0	$	6.0	$	—	$	—
	Certificates of deposit		63.1		—		—			63.1		63.1		—		—
	Commercial paper		207.4		—		—			207.4		—		207.4		—
	Corporate debt securities		40.2		—		—			40.2		40.2		—		—
	Custody cash deposit		3.2		—		—			3.2		3.2		—		—
	Money market funds		256.5		—		—			256.5		—		256.5		—
	Municipal bonds		5.0		—		—			5.0		5.0		—		—
	Sovereign debt		15.0		—		—			15.0		—		15.0		—
	U.S. government securities		309.5		—		—			309.5		309.5		—		—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	13.2		—					13.2		13.2		—		—
		Asset backed securities	19.6		—		—			19.6		—		19.6		—
		Certificates of deposit	157.3		—		—			157.3		157.3		—		—
		Commercial paper	109.2		—		—			109.2		—		109.2		—
		Corporate bonds	234.7		—		(0.2		)	234.5		234.5		—		—
		Municipal bonds	43.4		—		—			43.4		43.4		—		—
		Sovereign debt	30.0		—		—			30.0		—		30.0		—
		U.S. government securities	32.3		—		—			32.3		32.3		—		—
	Short-term trading securities
		Mutual funds	44.8		2.5		—			47.3		47.3		—		—
	Long-term available-for-sale
		Agency bonds	7.1		—		—			7.1		7.1		—		—
		Asset backed securities	65.8		0.1		—			65.9		—		65.9		—
		Corporate bonds	172.1		0.1		(0.1		)	172.1		172.1		—		—
		Municipal bonds	10.7		—		—			10.7		10.7		—		—
		Sovereign debt	1.5		—		—			1.5		—		1.5		—
		U.S. government securities	48.8		0.1		—			48.9		48.9		—		—
Convertible debt securities (2)			4.9		2.3		(1.6		)	5.6		—		—		5.6
Derivative contracts (3)			2.2		12.3		(11.7		)	2.8		—		1.5		1.3
		Total	$	1,903.5	$	17.4	$	(13.6	)	$	1,907.3	$	1,193.8	$	706.6	$	6.9

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.


(2)	Considered "available for sale" and included in "Other assets" in the accompanying Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” "Other assets," or “Other accrued liabilities” in the accompanying Consolidated Balance Sheets.



			January 31, 2016
			Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value		Level 1		Level 2		Level 3
Cash equivalents (1):
	Agency bonds		$	8.5	$	—	$	—		$	8.5	$	8.5	$	—	$	—
	Certificates of deposit		267.6		—		—			267.6		267.6		—		—
	Commercial paper		106.6		—		—			106.6		—		106.6		—
	Custody cash deposit		2.1		—		—			2.1		2.1		—		—
	Money market funds		382.4		—		—			382.4		—		382.4		—
	Municipal bonds		5.0		—		—			5.0		5.0		—		—
	U.S. government securities		103.0		—		—			103.0		103.0		—		—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	40.0		—		(0.1		)	39.9		39.9		—		—
		Asset backed securities	7.3		—		—			7.3		—		7.3		—
		Certificates of deposit	190.3		—		—			190.3		190.3		—		—
		Commercial paper	141.1		—		—			141.1		—		141.1		—
		Corporate debt securities	377.1		0.1		(0.3		)	376.9		376.9		—		—
		Municipal bonds	9.7		—		—			9.7		9.7		—		—
		Sovereign debt	20.1		—		—			20.1		—		20.1		—
		U.S. government securities	74.6		—		—			74.6		74.6		—		—
	Short-term trading securities
		Mutual funds	38.8		0.4		(1.2		)	38.0		38.0		—		—
	Long-term available-for-sale
		Agency bonds	56.8		0.1		—			56.9		56.9		—		—
		Asset backed securities	36.5		0.1		—			36.6		—		36.6		—
		Corporate debt securities	320.9		0.3		(0.8		)	320.4		320.4		—		—
		Municipal bonds	2.9		—		—			2.9		2.9		—		—
		Sovereign debt	16.9		—		—			16.9		—		16.9		—
		U.S. government securities	98.4		0.3		(0.1		)	98.6		98.6		—		—
Convertible debt securities (2)			2.5		2.0		(1.1		)	3.4		—		—		3.4
Derivative contracts (3)			1.5		7.8		(7.4		)	1.9		—		1.6		0.3
		Total	$	2,310.6	$	11.1	$	(11.0	)	$	2,310.7	$	1,594.4	$	712.6	$	3.7

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.


(2)	Considered "available for sale" securities and included in "Other assets" in the accompanying Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” "Other assets," or “Other accrued liabilities” in the accompanying Consolidated Balance Sheets.

Autodesk classifies its marketable securities as either short-term or long-term based on each instrument’s underlying contractual maturity date. Generally marketable securities with remaining maturities of less than 12 months are classified as short-term and marketable securities with remaining maturities greater than 12 months are classified as long-term. Autodesk may sell certain of its marketable securities prior to their stated maturities for strategic purposes or in anticipation of credit deterioration.

Autodesk applies fair value accounting for certain financial assets and liabilities, which consist of cash equivalents, marketable securities, and other financial instruments, on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and (Level 3) unobservable inputs for which there is little or no market data, which require Autodesk to develop its own assumptions. When determining fair value, Autodesk uses observable market data and relies on unobservable inputs only when observable market data is not available. There have been no transfers between fair value measurement levels during the year ended January 31, 2017.

Autodesk's cash equivalents, marketable securities, and financial instruments are primarily classified within Level 1 or Level 2 of the fair value hierarchy. Autodesk values it's available for sale securities on pricing from pricing vendors, who may use quoted prices in active markets for identical assets (Level 1) or inputs other than quoted prices that are observable either directly or indirectly in determining fair value (Level 2). Autodesk's Level 2 securities are valued primarily using observable inputs other than quoted prices in active markets for identical assets and liabilities. Autodesk's Level 3 securities consist of investments held in auction rate securities, convertible debt securities, and derivative contracts which are valued using probability weighted discounted cash flow models and some of the inputs to the models are unobservable in the market.

A reconciliation of the change in Autodesk’s Level 3 items for the fiscal year ended January 31, 2017 was as follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balances, January 31, 2016		$	0.3		$	3.4		$	3.7
Purchases		1.1			4.0			5.1
Settlements		(0.7		)	(1.7		)	(2.4		)
Gains (losses) included in earnings		0.6			0.1			0.7
Gains included in OCI		—			(0.2		)	(0.2		)
Balances, January 31, 2017		$	1.3		$	5.6		$	6.9

The following table summarizes the estimated fair value of Autodesk's “available-for-sale securities” classified by the contractual maturity date of the security:



	January 31, 2017
	Cost		Fair Value
Due within in 1 year	$	635.6	$	635.9
Due in 1 year through 5 years	305.4		305.8
Due in 5 years through 10 years	2.6		2.6
Due after 10 years	7.0		7.0
Total	$	950.6	$	951.3

As of January 31, 2017 and 2016, Autodesk had no material securities, individually and in the aggregate, in a continuous unrealized loss position for greater than twelve months.

As of January 31, 2017 and 2016 Autodesk had $117.2 million and $104.3 million, respectively, in direct investments in privately held companies accounted for under the cost method. The privately held investments are included in other long-term assets and are periodically assessed for other-than-temporary impairment. If Autodesk determines that an other-than-temporary impairment has occurred, Autodesk writes down the investment to its fair value. Other than the amounts disclosed in the following paragraph, Autodesk does not intend to sell these cost method investments and it is not more likely than not that Autodesk will be required to sell the investment before recovery of the amortized cost bases, which may be maturity. Therefore, Autodesk does not consider those investments to be other-than-temporarily impaired at January 31, 2017. Autodesk estimates fair value of its cost method investments considering available information such as pricing in recent rounds of financing, current cash positions, earnings and cash flow forecasts, recent operational performance, and any other readily available market data.

During fiscal 2017 and 2016, Autodesk recorded $1.3 million and $0.2 million, respectively, in other-than-temporary impairment on its privately held equity and debt investments. The impairment expense was recorded in “Interest and other expense, net” on the Company's Consolidated Statements of Operations.

The sales or redemptions of “available-for-sale securities” in fiscal 2017, 2016, and 2015 resulted in gains of $1.5 million, $0.1 million, and $0.7 million, respectively. The losses and gains were recorded in "Interest and other expense, net" on the Company's Consolidated Statements of Operations.

Proceeds from the sale and maturity of marketable securities for fiscal 2017 and fiscal 2016 were $2.3 billion and $1.7 billion, respectively.

Derivative Financial Instruments

Under its risk management strategy, Autodesk uses derivative instruments to manage its short-term exposures to fluctuations in foreign currency exchange rates which exist as part of ongoing business operations. Autodesk's general practice is to hedge a portion of transaction exposures denominated in euros, Japanese yen, Swiss francs, British pounds, Canadian dollars and Australian dollars. These instruments have maturities between one and twelve months in the future. Autodesk does not enter into derivative instrument transactions for trading or speculative purposes.

The bank counterparties to the derivative contracts potentially expose Autodesk to credit-related losses in the event of their nonperformance. However, to mitigate that risk, Autodesk only contracts with counterparties who meet the Company's minimum requirements under its counterparty risk assessment process. Autodesk monitors ratings, credit spreads, and potential downgrades on at least a quarterly basis. Based on Autodesk's ongoing assessment of counterparty risk, the Company will adjust its exposure to various counterparties. Autodesk generally enters into master netting arrangements, which reduce credit risk by permitting net settlement of transactions with the same counterparty. However, Autodesk does not have any master netting arrangements in place with collateral features.

Foreign currency contracts designated as cash flow hedges

Autodesk uses foreign currency contracts to reduce the exchange rate impact on a portion of the net revenue or operating expense of certain anticipated transactions. These contracts are designated and documented as cash flow hedges. The effectiveness of the cash flow hedge contracts is assessed quarterly using regression analysis as well as other timing and probability criteria. To receive cash flow hedge accounting treatment, all hedging relationships are formally documented at the inception of the hedge and the hedges are expected to be highly effective in offsetting changes to future cash flows on hedged transactions. The gross gains and losses on these hedges are included in “Accumulated other comprehensive loss” and are reclassified into earnings at the time the forecasted revenue or expense is recognized. In the event the underlying forecasted transaction does not occur, or it becomes probable that it will not occur, Autodesk reclassifies the gain or loss on the related cash flow hedge from “Accumulated other comprehensive loss” to “Interest and other expense, net” in the Company's Consolidated Financial Statements at that time.

The net notional amount of these contracts are presented net settled and were $369.4 million at January 31, 2017 and $142.4 million at January 31, 2016. Outstanding contracts are recognized as either assets or liabilities on the balance sheet at fair value. The majority of the net gain of $14.6 million remaining in “Accumulated other comprehensive loss” as of January 31, 2017 is expected to be recognized into earnings within the next twelve months.

Derivatives not designated as hedging instruments

Autodesk uses foreign currency contracts which are not designated as hedging instruments to reduce the exchange rate risk associated primarily with foreign currency denominated receivables and payables. These forward contracts are marked-to-market at the end of each fiscal quarter with gains and losses recognized as “Interest and other expense, net.” These derivative instruments do not subject the Company to material balance sheet risk due to exchange rate movements because gains and losses on these derivative instruments are intended to offset the gains or losses resulting from the settlement of the underlying foreign currency denominated receivables and payables. The net notional amounts of these foreign currency contracts are presented net settled and were $270.6 million at January 31, 2017 and $231.6 million at January 31, 2016.

In addition to these foreign currency contracts, Autodesk holds derivative instruments issued by privately held companies, which are not designated as hedging instruments. These derivatives consist of certain conversion options on the convertible debt securities held by Autodesk and an option to acquire a privately held company. These derivatives are recorded at fair value as of each balance sheet date and are recorded in “Other assets.” Changes in the fair values of these instruments are recognized in income as “Interest and other expense, net.”

Fair Value of Derivative Instruments:

The fair value of derivative instruments in Autodesk’s Consolidated Balance Sheets were as follows as of January 31, 2017 and January 31, 2016:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	January 31, 2017		January 31, 2016
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	10.1	$	3.4
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	3.2		4.9
Total derivative assets		$	13.3	$	8.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	4.5	$	3.4
Derivatives not designated as hedging instrument	Other accrued liabilities	6.0		3.0
Total derivative liabilities		$	10.5	$	6.4

The effects of derivatives designated as hedging instruments on Autodesk’s Consolidated Statements of Operations were as follows for the fiscal years ended January 31, 2017, 2016, and 2015, respectively (amounts presented include any income tax effects):



	Foreign Currency Contracts
	Fiscal Year Ended January 31,
	2017			2016			2015
Amount of gain recognized in accumulated other comprehensive income on derivatives (effective portion)	$	6.3		$	2.2		$	46.4
Amount and location of gain reclassified from accumulated other comprehensive income into income (effective portion)
Net revenue	$	9.2		$	39.8		$	10.5
Operating expenses	(1.8		)	(10.5		)	(3.5		)
Total	$	7.4		$	29.3		$	7.0
Amount and location of (loss) gain recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	(0.3	)	$	(0.7	)	$	0.9

The effects of derivatives not designated as hedging instruments on Autodesk’s Consolidated Statements of Operations were as follows for the fiscal years ended January 31, 2017, 2016, and 2015, respectively (amounts presented include any income tax effects):



	Fiscal Year Ended January 31,
	2017			2016			2015
Amount and location of (loss) gain recognized in income on derivatives
Interest and other expense, net	$	(11.1	)	$	(1.7	)	$	(25.5	)

Employee and Director Stock Plans

12 Months Ended

Jan. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee and Director Stock Plans

Stock Plans

As of January 31, 2017, Autodesk maintained two active stock plans for the purpose of granting equity awards to employees and to non-employee members of Autodesk’s Board of Directors: the 2012 Employee Stock Plan (as amended, the “2012 Employee Plan”), which is available only to employees, and the Autodesk 2012 Outside Directors’ Stock Plan (“2012 Directors' Plan”), which is available only to non-employee directors. Additionally, there are two expired or terminated plans with options outstanding. The exercise price of all stock options granted under these plans was equal to the fair market value of the stock on the grant date.

The 2012 Employee Plan was approved by Autodesk's stockholders and became effective on January 6, 2012. On June 10, 2015, Autodesk's stockholders approved amendments to the 2012 Employee Plan, which increased the number of shares reserved for issuance under the plan by 12.5 million shares. The 2012 Employee Plan replaced the 2008 Employee Stock Plan, as amended ("2008 Plan"), and no further equity awards may be granted under the 2008 Plan. The 2012 Employee Plan reserves up to 45.1 million shares which includes 39.1 million shares reserved under the 2012 Employee Plan, as well as up to 6.0 million shares forfeited under certain prior employee stock plans during the life of the 2012 Employee Plan. The 2012 Employee Plan permits the grant of stock options, restricted stock units, and restricted stock awards. Each restricted stock unit or restricted stock award granted will be counted against the shares authorized for issuance under the 2012 Employee Plan as 1.79 shares. If a granted option, restricted stock unit, or restricted stock award expires or becomes unexercisable for any reason, the unpurchased or forfeited shares that were granted may be returned to the 2012 Employee Plan and may become available for future grant under the 2012 Employee Plan. As of January 31, 2017, 36.7 million shares subject to options or restricted stock awards have been granted under the 2012 Employee Plan. Options and restricted stock that were granted under the 2012 plan vest over periods ranging from immediately upon grant to over a three year period and options expire 10 years from the date of grant. The 2012 Employee Plan will expire on June 30, 2022. At January 31, 2017, 12.4 million shares were available for future issuance under the 2012 Employee Plan.

The 2012 Director's Plan was approved by Autodesk's stockholders and became effective on January 6, 2012. The 2012 Directors' Plan replaced the 2010 Outside Directors' Stock Plan, as amended ("2010 Plan"). The 2012 Directors' Plan permits the grant of stock options, restricted stock units, and restricted stock awards to non-employee members of Autodesk’s Board of Directors. Each restricted stock unit or restricted stock award granted will be counted against the shares authorized for issuance under the 2012 Directors' Plan as 2.11 shares. As of January 31, 2017, 0.8 million shares subject to restricted stock unit awards have been granted under the 2012 Directors' Plan. Restricted stock units that were granted under the 2012 Outside Directors' Plan vest over one to three years from the date of grant. On March 12, 2015, the Board reduced the number of shares reserved for issuance under the 2012 Directors' Plan by 0.9 million shares, so that 1.7 million shares are now reserved for issuance under the 2012 Directors' Plan. The 2012 Directors' Plan will expire on June 30, 2022. At January 31, 2017, 0.9 million shares were available for future issuance under the 2012 Director's Plan.

The following sections summarize activity under Autodesk’s stock plans.

Stock Options:

A summary of stock option activity for the fiscal year ended January 31, 2017 is as follows:



	Number of Shares (in millions)		Weighted average exercise price per share		Weighted average remaining contractual term (in years)	Aggregate Intrinsic Value (1) (in millions)
Options outstanding at January 31, 2016	1.6		$	37.06
Exercised	(1.0	)	35.85
Options vested, exercisable and outstanding at January 31, 2017	0.6		$	39.25	3.1	$	25.8
Options available for grant at January 31, 2017	13.3

_______________


(1)	Represents the total pre-tax intrinsic value, based on Autodesk’s closing stock price of $81.34 per share as of January 31, 2017, which would have been received by the option holders had all option holders exercised their options as of that date.

As of January 31, 2017, compensation cost related to stock options has been fully recognized.

The following table summarizes information about the pre-tax intrinsic value of options exercised during the fiscal years ended January 31, 2017, 2016, and 2015:



	Fiscal year ended January 31,
	2017		2016		2015
Pre-tax intrinsic value of options exercised (1)	$	32.0	$	32.6	$	67.6

——————


(1)	The intrinsic value of options exercised is calculated as the difference between the exercise price of the option and the market value of the stock on the date of exercise.

The following table summarizes information about options vested and exercisable, and outstanding at January 31, 2017:



	Number of Shares (in millions)	Weighted average exercise price per share
Range of per-share exercise prices:
$27.40 - $38.55	0.2	$	33.00
$38.56 - $42.38	0.3	41.62
$42.39 - $43.81	0.1	43.81
	0.6	$	39.25

These options will expire if not exercised at specific dates ranging through September 2022.

Restricted Stock:

A summary of restricted stock activity for the fiscal year ended January 31, 2017 is as follows:



	Unreleased Restricted Stock Units (in thousands)		Weighted average grant date fair value per share
Unvested restricted stock at January 31, 2016	7,739.6		$	51.80
Granted	4,226.3		65.95
Vested	(3,585.0	)	52.12
Canceled/Forfeited	(725.2	)	53.25
Performance Adjustment (1)	(33.3	)	63.74
Unvested restricted stock at January 31, 2017	7,622.4		$	60.13

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2016 performance period. The performance stock units were attained at rates ranging from 86.1% to 98.0% of the target award.

For the restricted stock granted during fiscal years ended January 31, 2017, 2016, and 2015, the weighted average grant date fair value was $65.95, $52.53, and $54.17, respectively. The fair value of the shares vested during fiscal years ended January 31, 2017, 2016, and 2015 was $232.2 million, $193.3 million, and $147.8 million, respectively.

During the fiscal year ended January 31, 2017, Autodesk granted 3.8 million restricted stock units. Restricted stock units vest over periods ranging from immediately upon grant to a pre-determined date that is typically within three years from the date of grant. Restricted stock units are not considered outstanding stock at the time of grant, as the holders of these units are not entitled to any of the rights of a stockholder, including voting rights. The fair value of the restricted stock units is expensed ratably over the vesting period. Autodesk recorded stock-based compensation expense related to restricted stock units of $173.0 million, $146.4 million, and $118.9 million during fiscal years ended January 31, 2017, 2016, and 2015, respectively. As of January 31, 2017, total compensation cost not yet recognized of $309.8 million related to non-vested awards, is expected to be recognized over a weighted average period of 1.8 years. At January 31, 2017, the number of restricted stock units granted but unvested was 6.8 million.

During the fiscal year ended January 31, 2017, Autodesk granted 0.4 million performance stock units for which the ultimate number of shares earned is determined based on the achievement of performance criteria at the end of the stated service. The performance criteria for these grants are based upon net new model subscription additions, new model Annualized Recurring Revenue ("ARR"), non-GAAP total spend, and total subscription renewal rate goals ("FY17 performance criteria") adopted by the Compensation and Human Resource Committee, as well as total stockholder return compared against companies in the S&P Computer Software Select Index (“Relative TSR”). Each performance stock unit covers a three year period:


•	Up to one third of the performance stock units may vest following year one, depending upon the achievement of the FY17 performance criteria as well as 1-year Relative TSR (covering year one).


•	Up to one third of the performance stock units may vest following year two, depending upon the achievement of the performance criteria for year two as well as 2-year Relative TSR (covering years one and two).


•	Up to one third of the Performance stock units may vest following year three, depending upon the achievement of the performance criteria for year three as well as 3-year Relative TSR (covering years one, two and three).

Performance stock units are not considered outstanding stock at the time of grant, as the holders of these units are not entitled to any of the rights of a stockholder, including voting rights. Autodesk has determined the grant-date fair value for these awards using a Monte Carlo simulation model since the awards are subject to a market condition. The fair value of the performance stock units is expensed using the accelerated attribution over the vesting period. Autodesk recorded stock-based compensation expense related to performance stock units of $22.9 million, $23.2 million, and $17.5 million during fiscal years ended January 31, 2017, 2016, and 2015 respectively. As of January 31, 2017, total compensation cost not yet recognized of $3.2 million related to unvested performance stock units, is expected to be recognized over a weighted average period of 0.8 years. At January 31, 2017, the number of performance stock units granted but unvested was 0.8 million.

1998 Employee Qualified Stock Purchase Plan (“ESPP”)

Under Autodesk’s ESPP, which was approved by stockholders in 1998, eligible employees may purchase shares of Autodesk’s common stock at their discretion using up to 15% of their eligible compensation, subject to certain limitations, at 85% of the lower of Autodesk's closing price (fair market value) on the offering date or the exercise date. The offering period for ESPP awards consists of four, six-month exercise periods within a 24-month offering period.

At January 31, 2017, a total of 45.6 million shares were available for future issuance. This amount automatically increases on the first trading day of each fiscal year by an amount equal to the lesser of 5.0 million shares or 2% of the total of (1) outstanding shares plus (2) any shares repurchased by Autodesk during the prior fiscal year. Under the ESPP, the Company issues shares on the first trading day following March 31 and September 30 of each fiscal year. The ESPP expires during fiscal 2018.

Autodesk issued 2.3 million shares under the ESPP at an average price of $36.99 per share in fiscal 2017, 2.1 million shares at an average price of $36.29 per share in fiscal 2016, and 2.1 million shares at an average price of $33.91 per share in fiscal 2015. The weighted average grant date fair value of awards granted under the ESPP during fiscal 2017, 2016, and 2015, calculated as of the award grant date using the BSM option pricing model, was $19.20, $11.85, and $15.14 per share, respectively. Autodesk recorded $25.9 million, $27.1 million, and $23.9 million of compensation expense associated with the ESPP in fiscal 2017, 2016, and 2015, respectively.

Equity Compensation Plan Information

The following table summarizes the number of outstanding options granted to employees and directors, as well as the number of securities remaining available for future issuance under these plans as of January 31, 2017:



	(a)	(b)		(c)
Plan category	Number of securities to be issued upon exercise of outstanding options (in millions)	Weighted-average exercise price of outstanding options		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (in millions)
Equity compensation plans approved by security holders	8.2	$	39.25	58.9	(1)
Total	8.2	$	39.25	58.9

____________________


(1)	Included in this amount are 45.6 million securities available for future issuance under Autodesk’s ESPP.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

Income Taxes

12 Months Ended

Jan. 31, 2017

Income Tax Disclosure [Abstract]

Income Taxes

The provision for income taxes consists of the following:



	Fiscal year ended January 31,
	2017			2016			2015
Federal:
Current	$	1.6		$	(4.7	)	$	(43.8	)
Deferred	8.4			220.9			(11.9		)
State:
Current	(1.9		)	0.5			(13.2		)
Deferred	1.3			20.9			9.0
Foreign:
Current	93.9			68.4			69.5
Deferred	(45.0		)	4.2			(8.4		)
	$	58.3		$	310.2		$	1.2

Foreign pretax income (loss) was $(27.6) million in fiscal 2017, $218.2 million in fiscal 2016, and $302.5 million in fiscal 2015.

The differences between the U.S. statutory rate and the aggregate income tax provision are as follows:



	Fiscal year ended January 31,
	2017			2016			2015
Income tax provision (benefit) at U.S. Federal statutory rate	$	(177.0	)	$	(7.1	)	$	29.0
State income tax benefit, net of the U.S. Federal benefit	(17.3		)	(7.6		)	(4.0		)
Foreign income taxed at rates different from the U.S. statutory rate	22.3			(29.4		)	(40.0		)
U.S. valuation allowance	233.0			345.0			2.9
Increase in attributes due to ASU 2016-9 adoption	(119.4		)	—			—
Change in valuation allowance from ASU 2016-9 adoption	119.4			—			—
Tax effect of non-deductible stock-based compensation	18.8			19.3			15.7
Stock compensation windfall shortfall	(23.0		)	—			—
Research and development tax credit benefit	(10.3		)	(9.4		)	(7.2		)
Closure of income tax audits and changes in uncertain tax positions	8.2			(4.7		)	(0.7		)
Tax effect of officer compensation in excess of $1.0 million	2.2			1.4			2.4
Non-deductible expenses	2.0			2.6			2.2
Other	(0.6		)	0.1			0.9
	$	58.3		$	310.2		$	1.2

Significant components of Autodesk’s deferred tax assets and liabilities are as follows:



	January 31,
	2017			2016
Stock-based compensation	$	37.6		$	37.5
Research and development tax credit carryforwards	136.7			91.3
Foreign tax credit carryforwards	127.3			51.1
Accrued compensation and benefits	39.5			41.5
Other accruals not currently deductible for tax	18.7			23.6
Purchased technology and capitalized software	76.9			64.3
Fixed assets	24.3			18.6
Tax loss carryforwards	173.6			17.6
Deferred Revenue	128.3			56.7
Other	27.6			13.9
Total deferred tax assets	790.5			416.1
Less: valuation allowance	(748.0		)	(398.0		)
Net deferred tax assets	42.5			18.1
Indefinite lived intangibles	(70.1		)	(54.1		)
Unremitted earnings of foreign subsidiaries	—			(22.4		)
Total deferred tax liabilities	(70.1		)	(76.5		)
Net deferred tax assets	$	(27.6	)	$	(58.4	)

Autodesk’s tax expense is primarily driven by tax expense in foreign locations, withholding taxes paid on payments made to the U.S. from foreign sources, and tax amortization on indefinite-lived intangibles.

Autodesk regularly assesses the need for a valuation allowance against its deferred tax assets. In making that assessment, Autodesk considers both positive and negative evidence, whether it is more likely than not that some or all of the deferred tax assets will not be realized. In evaluating the need for a valuation allowance in the U.S., Autodesk considered cumulative losses in the U.S. arising from the Company's business model transition as a significant piece of negative evidence. Consequently, in our fiscal year 2016, Autodesk determined that a valuation allowance was required on our accumulated domestic tax attributes. In the current year, losses generated in the U.S. created incremental deferred tax assets, primarily net operating losses and R&D credits, and those deferred tax attributes have also been offset by a full valuation allowance. As a result, Autodesk has no material federal income tax expense or benefit in the current fiscal year. The valuation allowance increased by $352.4 million, $327.2 million, and $3.6 million in fiscal 2017, 2016, and 2015, respectively, primarily related to U.S. and Canadian deferred tax attribute. As Autodesk continually strives to optimize our overall business model, tax planning strategies may become feasible and prudent allowing us to realize many of the deferred tax assets that are offset by a valuation allowance; therefore, Autodesk will continue to evaluate our ability to utilize our net deferred tax assets each quarter, both in the U.S. and in foreign jurisdictions, based on all available evidence, both positive and negative.

In the second quarter of this fiscal 2017, Autodesk adopted ASU 2016-9 and recorded on our balance sheet U.S. deferred tax assets related to stock-based compensation that were not recorded on the balance sheet until they reduced Autodesk’s current tax expense. Under ASU 2016-9, those federal and state deferred tax assets were recorded on Autodesk’s balance sheet in the second quarter of fiscal 2017 and consequently increased our valuation allowance by an equivalent amount. See Part II, Item 8, Note 1, “Business and Summary of Significant Accounting Policies,” in the Notes to Consolidated Financial Statements for the impact on the valuation allowance as a result of the adoption in the rate reconciliation above.

Realization of foreign non-current net deferred tax assets of $49.7 million is dependent upon the Company's ability to generate future taxable income in appropriate tax jurisdictions to obtain benefit from the reversal of temporary differences, net operating loss carryforwards and tax credits. The amount of deferred tax assets considered realizable is subject to adjustment in future periods if estimates of future taxable income are reduced and Autodesk then determines that it is not more likely than not to realize such deferred tax assets.

As of January 31, 2017, Autodesk had $575.0 million of cumulative federal tax loss carryforwards and $526.8 million of cumulative state tax loss carryforwards, which may be available to reduce future income tax liabilities in federal and state jurisdictions. As discussed above, these cumulative assets have full valuation allowance against them on our balance sheet as the Company has determined it is more likely that not that these losses will not be utilized. These federal and state tax loss carryforwards will expire beginning fiscal 2019 through fiscal 2038 and fiscal 2019 through fiscal 2038, respectively.

As of January 31, 2017, Autodesk had $127.1 million of cumulative federal research tax credit carryforwards, $66.8 million of cumulative California state research tax credit carryforwards, and $54.6 million of cumulative Canadian federal tax credit carryforwards, which may be available to reduce future income tax liabilities in the respective jurisdictions. The federal tax credit carryforwards will expire beginning fiscal 2021 through fiscal 2038, the state credit carryforwards may reduce future California income tax liabilities indefinitely, and the Canadian tax credit carryforwards will expire beginning fiscal 2027 through fiscal 2038. Autodesk also has $211.5 million of cumulative foreign tax credit carryforwards, which may be available to reduce future U. S. tax liabilities. The foreign tax credit will expire beginning fiscal 2019 through fiscal 2028. As discussed above, these cumulative assets have full valuation allowance against them on our balance sheet as the Company has determined it is more likely that not that these losses will not be utilized.

Utilization of net operating losses and tax credits may be subject to an annual limitation due to ownership change limitations provided in the Internal Revenue Code and similar state provisions. This annual limitation may result in the expiration of net operating losses and credits before utilization. No ownership change has occurred through the balance sheet date that would limit a material amount of U.S. federal and state tax attributes.

As of January 31, 2017, the Company had $261.4 million of gross unrecognized tax benefits, of which $247.3 million would impact the effective tax rate, if recognized. However, this rate impact would be offset to the extent that recognition of unrecognized tax benefits currently presented as a reduction of deferred tax assets would increase the valuation allowance.

It is possible that the amount of unrecognized tax benefits will change in the next twelve months; however an estimate of the range of the possible change cannot be made at this time.

A reconciliation of the beginning and ending amount of the gross unrecognized tax benefits is as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Gross unrecognized tax benefits at the beginning of the fiscal year	$	254.3		$	245.8		$	222.1
Increases for tax positions of prior years	11.9			1.4			3.2
Decreases for tax positions of prior years	(4.1		)	(7.0		)	(2.5		)
Increases for tax positions related to the current year	11.1			15.8			33.2
Decreases relating to settlements with taxing authorities	(10.8		)	(0.5		)	(5.4		)
Reductions as a result of lapse of the statute of limitations	(1.0		)	(1.2		)	(4.8		)
Gross unrecognized tax benefits at the end of the fiscal year	$	261.4		$	254.3		$	245.8

It is the Company's continuing practice to recognize interest and/or penalties related to income tax matters in income tax expense. Autodesk had $2.5 million, $3.3 million, and $2.0 million, net of tax benefit, accrued for interest and penalties related to unrecognized tax benefits as of January 31, 2017, 2016, and 2015, respectively. There was $1.5 million and, $1.3 million of net expense and, $(0.8) million of net benefit for interest and penalties related to tax matters recorded through the consolidated statement of operations for the years ended January 31, 2017, 2016, and 2015 respectively.

Autodesk's U.S. and state income tax returns for fiscal year 2003 through fiscal year 2017 remain open to examination. The Internal Revenue Service has started an examination of the Company's U.S. consolidated federal income tax returns and employment tax for fiscal years 2014 and 2015. While it is possible that the Company's tax positions may be challenged, the Company believes its positions are consistent with the tax law, and the balance sheet reflects appropriate liabilities for uncertain federal tax positions for the years being examined.

Autodesk files tax returns in multiple foreign taxing jurisdictions with open tax years ranging from fiscal year 2005 to 2017.

Autodesk provides U.S. income taxes on the earnings of foreign subsidiaries, except to the extent subsidiaries' earnings are considered permanently reinvested outside the United States. As of January 31, 2017, the cumulative amount of earnings upon which U.S. income taxes have not been provided was $1,738.9 million. The unrecognized deferred tax liability for these earnings was approximately $435.1 million.

As a result of certain business and employment actions and capital investments undertaken by Autodesk, income earned in certain Europe and Asia Pacific countries is subject to reduced tax rates through fiscal 2019. We have $27.1 million benefit ($0.12 basic net income per share) attributable to the tax status of these business arrangements in fiscal 2017, compared to none in fiscal 2016, and $1.2 million ($0.01 basic net income per share) in fiscal 2015.

Acquisitions

12 Months Ended

Jan. 31, 2017

Business Combinations [Abstract]

Acquisitions

During the fiscal years ended January 31, 2017 and January 31, 2016, Autodesk completed the business combinations and technology purchases described below. The results of operations for the following acquisitions are included in the accompanying Consolidated Statements of Operations since their respective acquisition dates. Pro forma results of operations have not been presented because the effects of the acquisitions, individually and in the aggregate, were not material to Autodesk's Consolidated Financial Statements.

For acquisitions accounted for as business combinations, Autodesk recorded the tangible and intangible assets acquired and liabilities assumed based on their estimated fair values at the date of acquisition. The fair values assigned to the identifiable intangible assets acquired were based on estimates and assumptions determined by management. Autodesk recorded the excess of consideration transferred over the aggregate fair values as goodwill. The goodwill recorded is primarily attributable to synergies expected to arise after the acquisitions.

Fiscal 2017 Acquisitions

During the fiscal year ended January 31, 2017, Autodesk completed several business combinations and technology acquisitions for total cash consideration of $87.0 million. These business combinations and technology acquisitions were not material individually or in aggregate to Autodesk's Consolidated Financial Statements.

The following table summarizes the fair value of the assets acquired and liabilities assumed by major class for each of the business combinations and technology acquisitions completed during the fiscal year ended January 31, 2017:



Developed technologies	$	18.8
Customer relationships and other non-current intangible assets	10.2
Trade name	3.8
Goodwill	62.8
Deferred Revenue (current and non-current)	(2.1		)
Deferred tax liability	(7.1		)
Net tangible assets	0.6
	$	87.0

For certain business combinations included in the table above, the allocation of purchase price consideration to certain assets and liabilities is not yet finalized. Autodesk's estimates and assumptions are subject to change within the measurement period (up to one year from the acquisition date). For certain business combinations, the primary areas of the preliminary purchase price allocation that are not yet finalized are amounts for tax assets and liabilities, pending finalization of estimates and assumptions in respect of certain tax aspects of the transaction and residual goodwill, and the valuation of certain intangible assets.

Fiscal 2016 Acquisitions

On November 12, 2015, Autodesk closed a share purchase agreement with FIT AG (“FIT”) to acquire all of the outstanding shares of netfabb GmbH ("netfabb") for approximately $42.5 million cash consideration. Autodesk simultaneously entered into an investment agreement with FIT to invest approximately $27.4 million cash to acquire an equity interest in FIT. netfabb is a German-based provider of industrial grade additive manufacturing software solutions supporting most major 3D printers. FIT is a German-based provider of rapid prototyping and additive design and manufacturing services. The acquisition of netfabb provides Autodesk with software solutions that will reduce production costs and increase efficiency in 3D printing and additive manufacturing. The amount of goodwill that is deductible for U.S. income tax purposes is $29.8 million.

During the fiscal year ended January 31, 2016, Autodesk also completed several other business combination and technology acquisitions for total cash consideration of $106.8 million. These business combinations and technology acquisitions were not material individually or in aggregate to Autodesk's Consolidated Financial Statements.



	netfabb (1)			Other (2)
Developed technologies	$	6.6		$	27.3
Customer relationships	6.2			12.9
Trade name	1.4			4.7
Goodwill	36.1			63.7
Deferred revenue (current and non-current)	(1.0		)	(0.7		)
Deferred tax liability	(3.9		)	(1.6		)
Net tangible (liabilities) assets	(2.9		)	0.5
Total	$	42.5		$	106.8

_______________


(1)	During fiscal 2017, Autodesk recorded measurement period adjustments in our condensed consolidated balance sheet. The measurement period adjustments were recorded as a $3.3 million increase to goodwill, with an offsetting $3.3 million increase to net tangible liabilities.


(2)	During fiscal 2017, Autodesk recorded a measurement period adjustment in our condensed consolidated balance sheet. The measurement period adjustment was recorded as an $0.8 million decrease to goodwill, with an offsetting $0.8 million decrease to deferred tax liability.

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

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-URI http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1383-128463

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479

Deferred Compensation	12 Months Ended
Deferred Compensation	Jan. 31, 2017
Compensation Related Costs [Abstract]
Deferred Compensation	Deferred Compensation At January 31, 2017, Autodesk had marketable securities totaling $993.0 million, of which $47.3 million related to investments in debt and equity securities that are held in a rabbi trust under non-qualified deferred compensation plans. The total related deferred compensation liability was $47.3 million at January 31, 2017, of which $3.1 million was classified as current and $44.2 million was classified as non-current liabilities. The total related deferred compensation liability at January 31, 2016 was $38.0 million, of which $1.9 million was classified as current and $36.1 million was classified as non-current liabilities. The securities are recorded in the Consolidated Balance Sheets under the current portion of "Marketable securities". The current and non-current portions of the liability are recorded in the Consolidated Balance Sheets under “Accrued compensation” and “Other liabilities,” respectively.

The entire disclosure for compensation costs, including compensated absences accruals, compensated absences liability, deferred compensation arrangements and income statement compensation items. Deferred compensation arrangements may include a description of an arrangement with an individual employee, which is generally an employment contract between the entity and a selected officer or key employee containing a promise by the employer to pay certain amounts at designated future dates, usually including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period, the number of shares (units) issued during the period under such arrangements, and the carrying amount as of the balance sheet date of the related liability.

Commitments and Contingencies Disclosure [Abstract]

Borrowing Arrangements	12 Months Ended
Borrowing Arrangements	Jan. 31, 2017
Debt Disclosure [Abstract]
Borrowing Arrangements	Borrowing Arrangements In June 2015, Autodesk issued $450.0 million aggregate principal amount of 3.125% senior notes due June 15, 2020 and $300.0 million aggregate principal amount of 4.375% senior notes due June 15, 2025 (collectively, the “2015 Notes”). Autodesk received net proceeds of $742.0 million from issuance of the 2015 Senior Notes, net of a discount of $1.7 million and issuance costs of $6.3 million. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the 2015 Notes using the effective interest method. The proceeds of the 2015 Notes are available for general corporate purposes. Autodesk may redeem the 2015 Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the 2015 Notes, at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The 2015 Notes contain restrictive covenants that limit Autodesk's ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of its assets, subject to significant qualifications and exceptions. Based on quoted market prices, the fair value of the 2015 Notes was approximately $768.1 million as of January 31, 2017. In December 2012, Autodesk issued $400.0 million aggregate principal amount of 1.95% senior notes due December 15, 2017 and $350.0 million aggregate principal amount of 3.6% senior notes due December 15, 2022 (collectively, the "2012 Notes"). Autodesk received net proceeds of $739.3 million from issuance of the 2012 Notes, net of a discount of $4.5 million and issuance costs of $6.1 million. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the 2012 Notes using the effective interest method. The proceeds of the 2012 Notes are available for general corporate purposes. Autodesk may redeem the 2012 Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the 2012 Notes, at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The 2012 Notes contain restrictive covenants that limit Autodesk's ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer, or lease all or substantially all of our assets, subject to significant qualifications and exceptions. Based on quoted market prices, the fair value of the 2012 Notes was approximately $758.6 million as of January 31, 2017. Autodesk’s line of credit facility permits unsecured short-term borrowings of up to $400.0 million with an option to request an increase in the amount of the credit facility by up to an additional $100.0 million, and is available for working capital or other business needs. This credit agreement contains customary covenants that could restrict the imposition of liens on Autodesk’s assets, and restrict the Company’s ability to incur additional indebtedness or make dispositions of assets if Autodesk fails to maintain the financial covenants. The financial covenants consist of a leverage ratio, and an interest coverage ratio. As a result of the business model transition, we would not have complied with the leverage ratio requirement of the credit agreement at the end of the fourth quarter of fiscal 2017 and obtained a waiver for that period. The line of credit is syndicated with various financial institutions, including Citibank, N.A., an affiliate of Citigroup, which is one of the lead lenders and an agent. The maturity date on the line of credit facility is May 2020. At January 31, 2017, and January 31, 2016, Autodesk had no outstanding borrowings on this line of credit.

Commitments and Contingencies

12 Months Ended

Jan. 31, 2017

Commitments and Contingencies

Lease commitments

Autodesk leases office space and computer equipment under non-cancellable operating lease agreements that expire at various dates through 2090. The leases generally provide that Autodesk pay taxes, insurance, and maintenance expenses related to the leased assets. Certain of these lease arrangements contain escalation clauses whereby monthly rent increases over time.

At January 31, 2017, the aggregate future minimum lease payments required were as follows:




2018	$	60.7
2019	48.4
2020	31.4
2021	21.1
2022	12.2
Thereafter	41.2
	215.0
Less: Sublease income	2.5
	$	212.5

Rent expense related to these operating leases recognized on a straight-line basis over the lease period, was as follows:



	Fiscal Year Ended January 31,
	2017		2016		2015
Rent expense	$	65.3	$	58.7	$	55.0

Purchase commitments

In the normal course of business, Autodesk enters into various purchase commitments for goods or services. Total non-cancellable purchase commitments as of January 31, 2017 were approximately $166.4 million for periods through fiscal 2020. These purchase commitments primarily result from contracts for the acquisition of IT infrastructure, marketing, and software development services.

Autodesk has certain royalty commitments associated with the sale and licensing of certain products. Royalty expense is generally based on a dollar amount per unit sold or a percentage of the underlying revenue. Royalty expense, which was recorded under cost of subscription revenue and cost of license and other revenue on Autodesk’s Consolidated Statements of Operations, was $16.2 million in fiscal 2017, $17.4 million in fiscal 2016, and $17.9 million in fiscal 2015.

Guarantees and Indemnifications

In the normal course of business, Autodesk provides indemnifications of varying scopes, including limited product warranties and indemnification of customers against claims of intellectual property infringement made by third parties arising from the use of its products or services. Autodesk accrues for known indemnification issues if a loss is probable and can be reasonably estimated. Historically, costs related to these indemnifications have not been significant, and because potential future costs are highly variable, Autodesk is unable to estimate the maximum potential impact of these indemnifications on its future results of operations.

In connection with the purchase, sale, or license of assets or businesses with third parties, Autodesk has entered into or assumed customary indemnification agreements related to the assets or businesses purchased, sold or licensed. Historically, costs related to these indemnifications have not been significant, and because potential future costs are highly variable, Autodesk is unable to estimate the maximum potential impact of these indemnifications on its future results of operations.

As permitted under Delaware law, Autodesk has agreements whereby it indemnifies its officers and directors for certain events or occurrences while the officer or director is, or was, serving at Autodesk’s request in such capacity. The maximum potential amount of future payments Autodesk could be required to make under these indemnification agreements is unlimited; however, Autodesk has directors’ and officers’ liability insurance coverage that is intended to reduce its financial exposure and may enable Autodesk to recover a portion of any future amounts paid. Autodesk believes the estimated fair value of these indemnification agreements in excess of applicable insurance coverage is minimal.

Legal Proceedings

Autodesk is involved in a variety of claims, suits, investigations, and proceedings in the normal course of business activities including claims of alleged infringement of intellectual property rights, commercial, employment, piracy prosecution, business practices, and other matters. Autodesk routinely reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any matter is considered probable and the amount can be reasonably estimated, Autodesk records a liability for the estimated loss. Because of inherent uncertainties related to these legal matters, Autodesk bases its loss accruals on the best information available at the time. As additional information becomes available, Autodesk reassesses its potential liability and may revise its estimates. In the Company's opinion, resolution of pending matters is not expected to have a material adverse impact on its consolidated results of operations, cash flows, or its financial position. Given the unpredictable nature of legal proceedings, there is a reasonable possibility that an unfavorable resolution of one or more such proceedings could in the future materially affect the Company's results of operations, cash flows, or financial position in a particular period, however, based on the information known by the Company as of the date of this filing and the rules and regulations applicable to the preparation of the Company's financial statements, any such amount is either immaterial or it is not possible to provide an estimated amount of any such potential loss.

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Jan. 31, 2017
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity Preferred Stock Under Autodesk’s Certificate of Incorporation, 2.0 million shares of preferred stock are authorized. At January 31, 2017, there were no preferred shares issued or outstanding. The Board of Directors has the authority to issue the preferred stock in one or more series and to fix rights, preferences, privileges, and restrictions, including dividends and the number of shares constituting any series or the designation of such series, without any further vote or action by the stockholders. Common Stock Repurchase Program Autodesk has a stock repurchase program that is used to offset dilution from the issuance of stock under the Company’s employee stock plans and for such other purposes as may be in the interests of Autodesk and its stockholders, which has the effect of returning excess cash generated from the Company’s business to stockholders. Autodesk repurchased and retired approximately 9.7 million shares in fiscal 2017 at an average repurchase price of $64.73 per share, 8.5 million shares in fiscal 2016 at an average repurchase price of $53.58 per share, and 6.9 million shares in fiscal 2015 at an average repurchase price of $53.83. At January 31, 2017, 26.6 million shares remained available for repurchase under the repurchase program approved by the Board of Directors, including the 30.0 million share increase approved by the Board of Directors in September 2016. The share repurchase program does not have an expiration date and the pace and timing of repurchases will depend on factors such as cash generation from operations, available surplus, the volume of employee stock plan activity, cash requirements for acquisitions, economic and market conditions, stock price and legal and regulatory requirements.

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
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Interest and Other Income, net [Abstract]

Interest and Other Expense, net

12 Months Ended

Jan. 31, 2017

Interest and Other Expense, net

Interest and other expense, net, consists of the following:



	Fiscal Year Ended January 31,
	2017			2016			2015
Interest and investment expense, net	$	(29.7	)	$	(33.9	)	$	(13.2	)
Loss on foreign currency	(3.3		)	—			(3.9		)
Gain (loss) on strategic investments	0.3			3.8			(23.3		)
Other income	8.5			8.5			2.7
Interest and other expense, net	$	(24.2	)	$	(21.6	)	$	(37.7	)

Accumulated Other Comprehensive Loss

12 Months Ended

Jan. 31, 2017

Accumulated Other Comprehensive Income (loss) [Abstract]

Accumulated Other Comprehensive Loss

Accumulated other comprehensive loss, net of taxes, consisted of the following:



	Net Unrealized Gains (Losses) on Derivative Instruments			Net Unrealized Gains (Losses) on Available for Sale Securities			Defined Benefit Pension Components			Foreign Currency Translation Adjustments			Total
Balances, January 31, 2015	$	42.8		$	1.6		$	(23.7	)	$	(74.0	)	$	(53.3	)
Other comprehensive income (loss) before reclassifications	1.6			(1.3		)	(6.8		)	(35.2		)	(41.7		)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(29.3		)	(0.1		)	1.3			—			(28.1		)
Tax effects	0.6			—			0.9			0.5			2.0
Net current period other comprehensive (loss) income	(27.1		)	(1.4		)	(4.6		)	(34.7		)	(67.8		)
Balances, January 31, 2016	15.7			0.2			(28.3		)	(108.7		)	(121.1		)
Other comprehensive income (loss) before reclassifications	7.4			3.3			(5.8		)	(52.3		)	(47.4		)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(7.4		)	(1.5		)	1.2			—			(7.7		)
Tax effects	(1.1		)	(0.5		)	(0.9		)	0.2			(2.3		)
Net current period other comprehensive (loss) income	(1.1		)	1.3			(5.5		)	(52.1		)	(57.4		)
Balances, January 31, 2017	$	14.6		$	1.5		$	(33.8	)	$	(160.8	)	$	(178.5	)

Reclassifications related to gains and losses on available-for-sale securities are included in Interest and other expense, net. Refer to Note 2, "Financial Instruments" for the amount and location of reclassifications related to derivative instruments. Reclassifications of the defined benefit pension components are included in the computation of net periodic benefit cost. Refer to Note 14, "Retirement Benefit Plans."

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

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Net (Loss) Income Per Share

Net (Loss) Income Per Share

12 Months Ended

Jan. 31, 2017

Earnings Per Share [Abstract]

Basic net (loss) income per share is computed using the weighted average number of shares of common stock outstanding for the period, excluding stock options and restricted stock. Diluted net (loss) income per share is based upon the weighted average number of shares of common stock outstanding for the period and potentially dilutive common shares, including the effect of stock options and restricted stock units under the treasury stock method. The following table sets forth the computation of the numerators and denominators used in the basic and diluted net (loss) income per share amounts:



	Fiscal Year Ended January 31,
	2017			2016			2015
Numerator:
Net (loss) income	$	(582.1	)	$	(330.5	)	$	81.8
Denominator:
Denominator for basic net (loss) income per share—weighted average shares	222.7			226.0			227.1
Effect of dilutive securities (1)	—			—			5.3
Denominator for dilutive net (loss) income per share	222.7			226.0			232.4
Basic net (loss) income per share	$	(2.61	)	$	(1.46	)	$	0.36
Diluted net (loss) income per share	$	(2.61	)	$	(1.46	)	$	0.35

____________________


(1)	The effect of dilutive securities of 4.6 million and 4.7 million shares for the fiscal year ended January 31, 2017 and 2016, respectively, have been excluded from the calculation of diluted net (loss) income per share as those shares would have been anti-dilutive due to the net loss incurred during these fiscal years.

The computation of diluted net (loss) income per share does not include shares that are anti-dilutive under the treasury stock method because their exercise prices are higher than the average market value of Autodesk’s stock during the fiscal year. For each of the fiscal years ended January 31, 2017, 2016, and 2015, 0.1 million potentially anti-dilutive shares were excluded from the computation of net (loss) income per share.

Segments

12 Months Ended

Jan. 31, 2017

Segment Reporting [Abstract]

Segments

Autodesk reports segment information based on the “management” approach. The management approach designates the internal reporting used by management for making decisions, allocating resources and assessing performance as the source of the Company’s reportable segments. Prior to the third quarter of fiscal 2017, Autodesk had four operating segments: AEC, MFG, PSEB, and M&E.

As a result of the Company’s business model transition, there have been a number of changes in the business including a platform shift from perpetual licenses to subscription-based offerings and organizational changes in how the business is managed including a restructuring announced in the first quarter of fiscal 2017. In the third quarter of fiscal 2017, these organizational changes resulted in a change in the internal reporting provided to Autodesk’s chief operating decision maker (“CODM”) used to assess the performance of the business to focus on consolidated operating results. Accordingly, the Company's CODM now allocates resources and assesses the operating performance of the Company as a whole. As such, beginning in the third quarter of fiscal 2017, Autodesk concluded that it has one segment manager (the CODM), one operating segment, and one reporting unit for goodwill impairment purposes.

Information regarding Autodesk’s revenue by geographic area and product family is as follows:



	Fiscal year ended January 31,
	2017		2016		2015
Net revenue by geographic area (1):
Americas
U.S.	$	742.1	$	803.9	$	736.4
Other Americas	129.8		168.9		161.6
Total Americas	871.9		972.8		898.0
Europe, Middle East, and Africa	800.4		934.6		980.0
Asia Pacific	358.7		596.7		634.2
Total net revenue	$	2,031.0	$	2,504.1	$	2,512.2

Net revenue by product family:
Architecture, Engineering and Construction	$	880.9	$	949.1	$	872.6
Manufacturing	625.8		724.6		675.6
AutoCAD and AutoCAD LT (2)	326.7		594.8		695.1
Media and Entertainment	138.9		160.0		167.3
Other (2)	58.7		75.6		101.6
	$	2,031.0	$	2,504.1	$	2,512.2

__________________


(1)	Revenue by geographic area is based on the bill to country.


(2)	Prior periods have been adjusted to conform with current period's presentation.

Information regarding Autodesk’s long-lived assets by geographic area is as follows:



	January 31,
	2017		2016
Long-lived assets (1):
Americas
U.S.	$	118.8	$	118.8
Other Americas	5.9		3.2
Total Americas	124.7		122.0
Europe, Middle East, and Africa	18.7		25.7
Asia Pacific	15.2		21.6
Total long-lived assets	$	158.6	$	169.3

____________________


(1)	Long-lived assets exclude deferred tax assets, marketable securities, goodwill, and other intangible assets.

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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Compensation and Retirement Disclosure [Abstract]

Retirement Benefit Plans

12 Months Ended

Jan. 31, 2017

Retirement Benefit Plans

Pretax Savings Plan

Autodesk has a 401(k) plan that covers nearly all U.S. employees. Eligible employees may contribute up to 50% of their pretax salary, subject to limitations mandated by the Internal Revenue Service. Autodesk makes voluntary cash contributions and matches a portion of employee contributions in cash. Autodesk’s contributions were $16.4 million in fiscal 2017, $17.3 million in fiscal 2016, and $11.2 million in fiscal 2015. Autodesk does not allow participants to invest in Autodesk common stock through the 401(k) plan.

Defined Benefit Pension Plans

Autodesk maintains certain defined benefit pension plans to employees primarily located in countries outside of the U.S, particularly the United Kingdom, Switzerland, and Japan. The Company deposits funds for specific plans, consistent with the requirements of local law, with insurance companies, third-party trustees, or into government-managed accounts, and accrues for the unfunded portion of the obligation, where material. Depending on the design of the plan, local customs, and market circumstances, the liabilities of a plan may exceed qualified plan assets.

Benefit Obligation and Plan Assets

The changes in the projected benefit obligations and plan assets for the plans described above were as follows:



	Fiscal year ended January 31,
	2017			2016
Beginning projected benefit obligation	$	145.2		$	144.7
Service cost	5.6			5.7
Interest cost	3.0			3.3
Actuarial loss (gain)	7.1			6.3
Benefits paid	(2.6		)	(6.5		)
Foreign currency exchange rate changes	(9.5		)	(10.1		)
Curtailments and settlements	(6.8		)	(2.2		)
Contributions by plan participants	4.4			4.0
Ending projected benefit obligation	$	146.4		$	145.2

Beginning fair value of plan assets	$	101.4		$	104.2
Actual return on plan assets	4.2			1.3
Contributions paid by employer	15.3			4.5
Contributions paid by plan participants	4.4			4.0
Benefit payments	(2.6		)	(6.5		)
Curtailments and settlements	(6.8		)	—
Foreign currency exchange rate changes	(8.5		)	(6.1		)
Ending fair value of plan assets	$	107.4		$	101.4
Funded status	$	(39.0	)	$	(43.8	)

The amounts recognized on the consolidated balance sheets at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016
Other long-term liabilities	$	39.0	$	43.8
Accumulated other comprehensive loss, before tax	36.9		32.2
Net amount recognized	$	75.9	$	76.0

On a worldwide basis, our defined benefit pension plans were 73% funded as of January 31, 2017.

As of January 31, 2017, the aggregate accumulated benefit obligation was $128.2 million for the defined benefit pension plans compared to $127.1 million as of January 31, 2016. Included in the aggregate data in the following tables are the amounts applicable to our defined benefit pension plans, with accumulated benefit obligations in excess of plan assets, as well as plans with projected benefit obligations in excess of plan assets. Amounts related to such plans at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	$	119.2	$	127.1
Plan Assets	98.3		101.4
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	$	146.4	$	145.2
Plan Assets	107.4		101.4

Defined Benefit Pension Plan Assets

The investments of the plans are managed by insurance companies or third-party investment managers selected by Autodesk's Trustees, consistent with regulations or market practice of the country where the assets are invested. Investments managed by qualified insurance companies or third-party investment managers under standard contracts follow local regulations, and Autodesk is not actively involved in their investment strategies.

Defined benefit pension plan assets measured at fair value on a recurring basis consisted of the following investment categories at the end of each period as follows:



	Fiscal Year Ended January 31,
	2017								2016
	Level 1		Level 2		Level 3		Total		Total
Insurance contracts	$	—	$	46.3	$	—	$	46.3	$	42.6
Other investments	—		9.4		—		9.4		—
Total assets measured at fair value	$	—	$	55.7	$	—	55.7		42.6
Cash							—		0.3
Investment Fund valued using net asset value							51.7		58.5
Total pension plan assets at fair value							$	107.4	$	101.4

The insurance contracts in the preceding table represent the immediate cash surrender value of assets managed by qualified insurance companies. Autodesk does not have control over the target allocation or visibility of the investment strategies of those investments. Insurance contracts and investments held by insurance companies made up 43% and 42% of total plan assets as of January 31, 2017 and January 31, 2016, respectively.

The assets held in the investment fund in the preceding table are invested in a diversified growth fund actively managed by Russell Investments in association with Aon Hewitt. The objective of the fund is to generate capital appreciation on a long-term basis through a diversified portfolio of investments. The fund aims to deliver equity-like returns in the medium to long term with around two-thirds the volatility of equity markets. The fair value of the assets held in the investment fund are priced monthly at net asset value without restrictions on redemption.

Estimated Future Benefit Payments

Estimated benefit payments over the next 10 fiscal years are as follows:



	Pension Benefits
2018	$	4.2
2019	3.8
2020	3.5
2021	3.5
2022	3.4
2023-2027	19.1

Funding Expectations

Our expected required funding for the plans during fiscal 2018 is approximately $4.3 million.

Net Periodic Benefit Cost

The components of net periodic pension cost for the defined benefit pension plans for fiscal 2017, 2016, and 2015 are as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Service cost for benefits earned during the period	$	5.6		$	5.7		$	4.6
Interest cost on projected benefit obligation	3.0			3.3			3.9
Expected return on plan assets	(4.2		)	(3.9		)	(4.6		)
Amortization of prior service credit	(0.3		)	(0.1		)	(0.1		)
Amortization of loss	1.5			1.4			0.6
Settlement loss	1.2			—			—
Net periodic benefit cost	$	6.8		$	6.4		$	4.4

Amounts Recorded in OCI

The components of other comprehensive income for the defined benefit pension plans before taxes for fiscal 2017, 2016, and 2015 are as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Prior service credit for period	$	—		$	(2.2	)	$	—
Effect of settlement	(1.1		)	—			—
Net loss (gain) for period	7.2			9.1			18.4
Amortization of prior service credit	0.3			0.1			0.1
Amortization of net loss	(1.7		)	(1.4		)	(0.6		)
Other comprehensive loss (income)	$	4.7		$	5.6		$	17.9

Amounts Recorded in AOCI

The amounts recorded in accumulated other comprehensive loss before taxes at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017			2016
Net prior service credit	$	(3.6	)	$	(3.9	)
Net actuarial loss	40.5			36.1
Accumulated other comprehensive loss, before tax	$	36.9		$	32.2

The estimated amounts that will be amortized from AOCI into net periodic benefit cost over the next fiscal year for the qualified defined benefit pension plans are as follows:



	Pension Benefits
Amortization of prior service credit	$	0.3
Amortization of the net loss	(0.3		)
Total amortization	$	—

Assumptions

Weighted average actuarial assumptions used to determine costs for the plans for each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016		2015
Discount rate	3.2	%	3.2	%	3.3	%
Expected long-term rate of return on plan assets	4.3	%	3.8	%	3.9	%
Rate of compensation increase	2.2	%	2.2	%	2.2	%

The weighted-average expected long-term rate of return for the plan assets is 4.3%. The weighted-average expected long-term rate of return on plan assets is based on the interest rates guaranteed under the insurance contracts, and the expected rate of return appropriate for each category of assets weighted for the distribution within the diversified investment fund. The assumptions used for the plans are based upon customary rates and practices for the location of the plans. Factors such as asset class allocations, long-term rates of return (actual and expected), and results of periodic asset liability modeling studies are considered when constructing the long-term rate of return assumption for our defined benefit pension plans.

Weighted average actuarial assumptions used to determine benefit obligations for the plans at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016		2015
Discount rate	1.7	%	2.2	%	2.4	%
Rate of compensation increase	2.6	%	2.6	%	1.2	%

In selecting the appropriate discount rate for the plans, the Company uses country-specific information, adjusted to reflect the duration of the particular plan. The discount rate was based on highly rated long-term bond indexes and yield curves that match the duration of the plan’s benefit obligations.

Defined Contribution Plans

Autodesk also provides defined contribution plans in certain foreign countries where required by statute. Autodesk’s funding policy for foreign defined contribution plans is consistent with the local requirements in each country. Autodesk’s contributions to these plans were $26.6 million in fiscal 2017, $23.0 million in fiscal 2016, and $23.5 million in fiscal 2015.

Other Plans

In addition, Autodesk offers a non-qualified deferred compensation plan to certain key employees whereby they may defer a portion (or all) of their annual compensation until retirement or a different date specified by the employee in accordance with terms of the plan. See Note 6, “Deferred Compensation,” for further discussion.

Restructuring charges and other facility exit costs, net

12 Months Ended

Jan. 31, 2017

Restructuring and Related Activities [Abstract]

Restructuring charges and other facility exit costs, net

During fiscal 2017, the Board of Directors approved a world-wide restructuring plan (“Fiscal 2017 Plan”) in order to re-balance staffing levels and reduce operating expenses to better align them with the evolving needs of the Company's business. The restructuring plan included a reduction of approximately 840 positions and the consolidation of 18 leased facilities. During fiscal 2017, restructuring charges under the Fiscal 2017 Plan included $63.3 million in employee termination benefits and $7.6 million in lease termination and other exit costs. By January 31, 2017, the personnel and facilities related actions included in this restructuring plan were substantially complete.

Other costs primarily consist of legal, consulting, and other costs related to employee terminations and are expensed when incurred. During fiscal 2017, we incurred $9.6 million in lease termination costs not related to the Fiscal 2017 Plan.

The following tables set forth the restructuring charges and other facility exit costs, net during the fiscal years ended January 31, 2017 and 2016:



	Balances, January 31, 2016		Additions		Payments			Adjustments (1)			Balances, January 31, 2017
Fiscal 2017 Plan
Employee terminations costs	$	—	$	63.3	$	(62.2	)	$	—		$	1.1
Facility terminations and other exit costs			7.1		(3.2		)	(2.0		)	1.9
Other Facility Termination Costs
Facility termination costs	—		7.4		(1.8		)	(1.1		)	4.5
Fiscal 2014 Plan
Facility termination and other exit costs	1.2		—		(0.3		)	—			0.9
Fiscal 2013 Plan
Facility termination and other exit costs	0.1		—		(0.1		)	—			—
Total	$	1.3	$	77.8	$	(67.6	)	$	(3.1	)	$	8.4
Current portion (2)	$	0.8									$	6.6
Non-current portion (2)	0.5										1.8
Total	$	1.3									$	8.4

____________________


(1)	Adjustments include the impact of change in estimates, computer equipment, software, furniture, straight-line rent and leasehold improvement write-offs, and foreign currency translation.


(2)	The current and non-current portions of the reserve are recorded in the Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.



	Balances, January 31, 2015		Additions		Payments			Adjustments (1)		Balances, January 31, 2016
Fiscal 2013 Plan
Facility termination and other exit costs	$	0.2	$	—	$	(0.1	)	$	—	$	0.1
Fiscal 2014 Plan
Facility termination and other exit costs	1.4		—		(0.4		)	0.2		1.2
Total	$	1.6	$	—	$	(0.5	)	$	0.2	$	1.3
Current portion (2)	$	0.7								$	0.8
Non-current portion (2)	0.9									0.5
Total	$	1.6								$	1.3

_______________


(1)	Adjustments include the impact of foreign currency translation.


(2)	The current and non-current portions of the reserve are recorded in the Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

Selected Quarterly Financial Information (Unaudited)

12 Months Ended

Jan. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Information (Unaudited)

Summarized quarterly financial information for fiscal 2017 and 2016 is as follows:



2017	1st quarter (1)			2nd quarter			3rd quarter			4th quarter			Fiscal year
Net revenue	$	511.9		$	550.7		$	489.6		$	478.8		$	2,031.0
Gross profit	419.5			465.6			408.1			395.9			1,689.1
Loss from operations	(149.7		)	(62.9		)	(119.9		)	(167.1		)	(499.6		)
Provision for income taxes	(14.4		)	(25.2		)	(13.5		)	(5.2		)	(58.3		)
Net loss	(167.7		)	(98.2		)	(142.8		)	(173.4		)	(582.1		)
Basic net loss per share	$	(0.75	)	$	(0.44	)	$	(0.64	)	$	(0.78	)	$	(2.61	)
Diluted net loss per share	$	(0.75	)	$	(0.44	)	$	(0.64	)	$	(0.78	)	$	(2.61	)
Loss from operations includes the following items:
Stock-based compensation expense	$	51.6		$	54.3		$	56.6		$	59.3		$	221.8
Amortization of acquisition related intangibles	18.8			18.5			17.2			17.3			71.8
Restructuring charges and other facility exit costs, net	52.3			16.0			3.2			9.0			80.5

2016	1st quarter			2nd quarter (2)			3rd quarter			4th quarter			Fiscal year
Net revenue	$	646.5		$	609.5		$	599.8		$	648.3		$	2,504.1
Gross profit	554.7			516.5			508.8			553.4			2,133.4
Income (loss) from operations	21.5			4.3			(14.8		)	(9.7		)	1.3
Provision for income taxes	(2.7		)	(269.5		)	(21.3		)	(16.7		)	(310.2		)
Net income (loss)	19.1			(268.6		)	(43.8		)	(37.2		)	(330.5		)
Basic net income (loss) per share	$	0.08		$	(1.18	)	$	(0.19	)	$	(0.17	)	$	(1.46	)
Diluted net income (loss) per share	$	0.08		$	(1.18	)	$	(0.19	)	$	(0.17	)	$	(1.46	)
Income (loss) from operations includes the following items:
Stock-based compensation expense	$	50.2		$	40.7		$	50.2		$	56.1		$	197.2
Amortization of acquisition related intangibles	22.4			20.2			19.7			19.9			82.2

____________________

(1)

Certain first quarter fiscal 2017 balances have been revised to reflect the adoption of ASU 2016-09. As the adoption occurred in the second quarter of fiscal 2017, we are required to reflect any adjustments as of February 1, 2016, the beginning of the annual period that includes the interim period of adoption, and are required to revise our reported quarterly results for the first quarter. The revision resulted in a $5.3 million decrease of stock-based compensation expense from the previously reported expense. See Note 1, "Business and Summary of Significant Accounting Policies" for further discussion on the adoption.

(2)

Certain second quarter fiscal 2016 balances have been revised to include the correction of an error identified in the third quarter of fiscal 2016, resulting in an additional $33.1 million of income tax expense from the previously reported results, primarily related to the establishment of a valuation allowance. See Note 1, "Business and Summary of Significant Accounting Policies" for further discussion.

FINANCIAL STATEMENT SCHEDULE II

12 Months Ended

Jan. 31, 2017

Valuation and Qualifying Accounts [Abstract]

Financial Statement Schedule II

FINANCIAL STATEMENT SCHEDULE II



Description	Balance at Beginning of Fiscal Year		Additions Charged to Costs and Expenses or Revenues			Deductions and Write-Offs			Balance at End of Fiscal Year
	(in millions)
Fiscal Year Ended January 31, 2017
Allowance for doubtful accounts	$	7.6	$	(3.3	)	$	2.8		$	1.5
Product returns reserves	1.6		(7.7		)	(6.3		)	0.2
Partner Program reserves (1)	45.2		240.3			257.4			28.1
Restructuring	1.3		77.8			70.7			8.4
Fiscal Year Ended January 31, 2016
Allowance for doubtful accounts	$	6.3	$	2.3		$	1.0		$	7.6
Product returns reserves	2.6		10.4			11.4			1.6
Partner Program reserves (1)	36.5		267.4			258.7			45.2
Restructuring	1.6		—			0.3			1.3
Fiscal Year Ended January 31, 2015
Allowance for doubtful accounts	$	4.9	$	1.6		$	0.2		$	6.3
Product returns reserves	4.0		17.4			18.8			2.6
Partner Program reserves (1)	38.4		237.3			239.2			36.5
Restructuring	5.6		3.2			7.2			1.6

____________________


(1)	The partner program reserves balance impacts "Accounts receivable, net" and "Accounts payable" on the accompanying Consolidated Balance Sheets.

Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 31, 2017
Accounting Policies [Abstract]
Business	Business Autodesk, Inc. (“Autodesk” or the “Company”) is a world leading design software and services company, offering customers productive business solutions through powerful technology products and services. The Company serves customers in the architecture, engineering, and construction; manufacturing; and digital media, consumer, and entertainment industries. The Company’s sophisticated software products enable its customers to experience their ideas before they are real by allowing them to imagine, design, and create their ideas and to visualize, simulate, and analyze real-world performance early in the design process by creating digital prototypes. These capabilities allow Autodesk’s customers to foster innovation, optimize and improve their designs, help save time and money, improve quality, and collaborate with others. Autodesk software products are sold globally, both directly to customers and through a network of resellers and distributors.
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of Autodesk and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.
Segments	Segments Through the second quarter of fiscal 2017, Autodesk had four operating and reportable segments: Architecture, Engineering, and Construction (“AEC”), Manufacturing (“MFG”), Platform Solutions and Emerging Business (“PSEB”), and Media and Entertainment (“M&E”). During the third quarter of fiscal 2017, as a result of changes in our organizational structure from the business model transition and various other factors described further in Note 13, "Segments," management determined the Company operates as a single operating segment and single reporting unit. However, the Company will continue to provide disaggregation of revenue by product family and geographical information within Note 13, "Segments."
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the amounts reported in Autodesk’s consolidated financial statements and notes thereto. These estimates are based on information available as of the date of the consolidated financial statements. On a regular basis, management evaluates these estimates and assumptions. Actual results may differ materially from these estimates. Examples of significant estimates and assumptions made by management involve the determination of the fair value of acquired assets and liabilities, goodwill, financial instruments, long-lived assets and other intangible assets, the realizability of deferred tax assets, and the fair value of stock awards. The Company also makes assumptions, judgments, and estimates in determining the accruals for uncertain tax positions, variable compensation, partner incentive programs, product returns reserves, allowances for doubtful accounts, asset retirement obligations, and legal contingencies.
Foreign Currency Translation and Transactions	Foreign Currency Translation and Transactions The assets and liabilities of Autodesk’s foreign subsidiaries are translated from their respective functional currencies into U.S. dollars at the rates in effect at the balance sheet date, and revenue and expense amounts are translated at exchange rates that approximate those rates in effect during the period in which the underlying transactions occur. Foreign currency translation adjustments are recorded as other comprehensive (loss) income. Gains and losses realized from foreign currency transactions, those transactions denominated in currencies other than the foreign subsidiary’s functional currency, are included in interest and other income, net. Monetary assets and liabilities are remeasured using foreign currency exchange rates at the end of the period, and non-monetary assets are remeasured based on historical exchange rates.
Derivative Financial Instruments	Derivative Financial Instruments Under its risk management strategy, Autodesk uses derivative instruments to manage its short-term exposures to fluctuations in foreign currency exchange rates which exist as part of ongoing business operations. Autodesk’s general practice is to hedge a majority of transaction exposures denominated in euros, Japanese yen, Swiss francs, British pounds, Canadian dollars, and Australian dollars. These instruments have maturities between one to 12 months in the future. Autodesk does not enter into any derivative instruments for trading or speculative purposes. The bank counterparties in all contracts expose Autodesk to credit-related losses in the event of their nonperformance. However, to mitigate that risk, Autodesk only contracts with counterparties who meet the Company’s minimum requirements under its counterparty risk assessment process. Autodesk monitors ratings, credit spreads, and potential downgrades on at least a quarterly basis. Based on Autodesk’s on-going assessment of counterparty risk, the Company will adjust its exposure to various counterparties. Autodesk generally enters into master netting arrangements, which reduce credit risk by permitting net settlement of transactions with the same counterparty. However, Autodesk does not have any master netting arrangements in place with collateral features. Autodesk accounts for its derivative instruments as either assets or liabilities on the balance sheet and carries them at fair value. Gains and losses resulting from changes in fair value are accounted for depending on the use of the derivative and whether it is designated and qualifies for hedge accounting. Derivatives that do not qualify for hedge accounting are adjusted to fair value through earnings.
Cash and Cash Equivalents	Cash and Cash Equivalents Autodesk considers all highly liquid investments with insignificant interest rate risk and remaining maturities of three months or less at the date of purchase to be cash equivalents. Cash equivalents are recorded at cost, which approximates fair value.
Marketable Securities and Privately Held Company Investments	Marketable Securities and Privately Held Company Investments Marketable securities are stated at fair value. Marketable securities maturing within one year that are not restricted are classified as current assets. Substantially all marketable debt and equity investments held by Autodesk are classified as current based on the nature of the investments and their availability for use in current operations. Autodesk determines the appropriate classification of its marketable securities at the time of purchase and re-evaluates such classification as of each balance sheet date. Autodesk carries all “available-for-sale securities” at fair value, with unrealized gains and losses, net of tax, reported in stockholders’ equity until disposition or maturity. Autodesk carries all “trading securities” at fair value, with unrealized gains and losses, recorded in “Interest and other income, net” in the Company’s Consolidated Statements of Operations. The cost of securities sold is based on the specific-identification method. Autodesk regularly invests in non-marketable debt and equity securities of privately held companies. The carrying values of such investments are included in other long-term assets. For the majority of our privately held company investments, we use the cost method of accounting. All of Autodesk’s marketable securities and privately held company investments are subject to a periodic impairment review. The Company recognizes an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary. Autodesk considers various factors in determining whether to recognize an impairment charge, including the length of time and extent to which the fair value has been less than Autodesk’s cost basis, the financial condition and near-term prospects of the investee, and Autodesk’s intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in the market value. For additional information, see “Concentration of Credit Risk” within this Note 1 and Note 2, “Financial Instruments.”
Accounts Receivable, Net	Allowances for uncollectible trade receivables are based upon historical loss patterns, the number of days that billings are past due, and an evaluation of the potential risk of loss associated with problem accounts. The product returns reserves are based on historical experience of actual product returns, estimated channel inventory levels, the timing of new product introductions, channel sell-in for applicable markets, and other factors. As part of the indirect channel model, Autodesk has a partner incentive program that uses quarterly attainment of monetary rewards to motivate distributors and resellers to achieve mutually agreed upon business goals in a specified time period. A portion of these incentives reduce license and other revenue in the current period. The remainder, which relates to incentives on our Subscription Program, is recorded as a reduction to deferred revenue in the period the subscription transaction is billed and subsequently recognized as a reduction to subscription revenue over the contract period. These incentive balances do not require significant assumptions or judgments. Depending on how the payments are made, the reserves associated with the partner incentive program are treated on the balance sheet as either contra account receivable or accounts payable.
Concentration of Credit Risk	Concentration of Credit Risk Autodesk places its cash, cash equivalents, and marketable securities in highly liquid instruments with, and in the custody of, multiple diversified financial institutions globally with high credit ratings and limits the amounts invested with any one institution, type of security, and issuer.
Computer Equipment, Software, Furniture and Leasehold Improvements, Net	Computer Equipment, Software, Furniture, and Leasehold Improvements, Net Computer equipment, software, and furniture are depreciated using the straight-line method over the estimated useful lives of the assets, which range from three to five years. Leasehold improvements are amortized on a straight-line basis over the shorter of their estimated useful lives or the lease term. Costs incurred for computer software developed or obtained for internal use are capitalized for application development activities, if material, and immediately expensed for preliminary project activities and post-implementation activities. These capitalized costs are amortized over the software’s expected useful life, which is generally three years.
Software Development Costs	Software Development Costs Software development costs incurred prior to the establishment of technological feasibility are included in research and development expenses. Autodesk defines establishment of technological feasibility as the completion of a working model. Software development costs incurred subsequent to the establishment of technological feasibility through the period of general market availability of the products are capitalized and generally amortized over a three year period, if material.
Other Intangible Assets, Net	Other Intangible Assets, Net Other intangible assets include developed technologies, customer relationships, trade names, patents, user lists and the related accumulated amortization. These assets are shown as “Developed technologies, net” and as part of “Other assets” in the Consolidated Balance Sheet. The majority of Autodesk’s other intangible assets are amortized to expense over the estimated economic life of the product, which ranges from one to ten years.
Goodwill	Goodwill Goodwill consists of the excess of the consideration transferred over the fair value of net assets acquired in business combinations. Autodesk tests goodwill for impairment annually in its fourth fiscal quarter or more often if circumstances indicate a potential impairment may exist, or if events have affected the composition of reporting units. When goodwill is assessed for impairment, Autodesk has the option to perform an assessment of qualitative factors of impairment (“optional assessment”) prior to necessitating a two-step quantitative impairment test. Should the optional assessment be used for any given fiscal year, qualitative factors to consider include cost factors; financial performance; legal, regulatory, contractual, political, business, or other factors; entity specific factors; industry and market considerations, macroeconomic conditions, and other relevant events and factors affecting the reporting unit. If, after assessing the totality of events or circumstances, it is more likely than not that the fair value of the reporting unit is greater than its carrying value, then performing the two-step impairment test is unnecessary. Therefore, the two-step quantitative impairment test is necessary when either Autodesk does not utilize the optional assessment or, as a result of the optional assessment, it is not more likely than not that the fair value of the reporting unit is greater than its carrying value. The first step of the goodwill impairment test identifies if there is potential goodwill impairment. If step one indicates that an impairment may exist, a second step is performed to measure the amount of the goodwill impairment, if any. Goodwill impairment exists when the estimated fair value of goodwill is less than its carrying value. If impairment exists, the carrying value of the goodwill is reduced to fair value through an impairment charge recorded in our statements of operations. The process of evaluating the potential impairment of goodwill is subjective and requires significant judgment at many points during the analysis. The value of Autodesk’s goodwill could also be impacted by future adverse changes such as: (i) declines in Autodesk’s actual financial results, (ii) a sustained decline in Autodesk’s market capitalization, (iii) significant slowdown in the worldwide economy or the industries Autodesk serves, or (iv) changes in Autodesk’s business strategy. As described in Note 13, "Segments" commencing in the third quarter of fiscal 2017, Autodesk changed its segment reporting as it now operates as a single operating segment and single reporting unit. In situations in which an entity's reporting unit is publicly traded, the fair value for step one of the impairment test may be approximated by the entity's market capitalization. For the annual impairment test, Autodesk's market capitalization was substantially in excess of the carrying value of the Company as of January 31, 2017. Accordingly, Autodesk has determined there was no goodwill impairment during the year ended January 31, 2017. In addition, Autodesk did not recognize any goodwill impairment losses in fiscal 2016 or 2015.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets At least annually or more frequently as circumstances dictate, Autodesk reviews its long-lived assets for impairment whenever impairment indicators exist. Autodesk continually monitors events and changes in circumstances that could indicate the carrying amounts of its long-lived assets may not be recoverable. When such events or changes in circumstances occur, Autodesk assesses recoverability of these assets. Recoverability is measured by comparison of the carrying amounts of the assets to the future undiscounted cash flows the assets are expected to generate. If the long-lived assets are considered to be impaired, the impairment to be recognized is equal to the amount by which the carrying value of the assets exceeds its fair market value. Autodesk did not recognize any material impairments of long-lived assets during the fiscal years ended January 31, 2017, 2016, and 2015, respectively. In addition to the recoverability assessments, Autodesk routinely reviews the remaining estimated useful lives of its long-lived assets. Any reduction in the useful life assumption will result in increased depreciation and amortization expense in the quarter when such determinations are made, as well as in subsequent quarters.
Deferred Tax Assets	Deferred Tax Assets Deferred tax assets arise primarily from tax credits, net operating losses, and timing differences for reserves, accrued liabilities, stock options, deferred revenue, purchased technologies, and capitalized intangibles, partially offset by U.S. deferred tax liabilities on unremitted earnings from certain foreign subsidiaries, acquired intangibles, and valuation allowances against U.S. and foreign deferred tax assets. Autodesk performed a quarterly assessment of the recoverability of these net deferred tax assets and believe that we will generate sufficient future taxable income in appropriate tax jurisdictions to realize the net deferred tax assets. They are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to reverse. Valuation allowances are established when necessary to reduce gross deferred tax assets to the amount that is "more likely than not" to be realized.
Revenue Recognition	Revenue Recognition Autodesk recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price is fixed or determinable, and collection is probable. For multiple element arrangements containing only software and software-related elements, Autodesk allocates the sales price among each of the deliverables using the residual method, under which a portion of the total arrangement consideration is allocated to undelivered elements based on their vendor-specific objective evidence (“VSOE”) of fair value and the remainder or residual of the total consideration is recognized as revenue for the delivered elements. VSOE is the price charged when an element is sold separately or a price set by management with the relevant authority. If Autodesk does not have VSOE of an undelivered element, revenue recognition is deferred on the entire sales arrangement until all elements for which Autodesk does not have VSOE are delivered. If Autodesk does not have VSOE for undelivered product subscriptions, maintenance or services, the total consideration for the arrangement is recognized ratably over the longest contractual service period in the arrangement. For multiple element arrangements involving non-software elements, including cloud subscription services, our revenue recognition policy is based upon the accounting guidance contained in ASC 605, Revenue Recognition. For these arrangements, Autodesk first allocates the total arrangement consideration based on the relative selling prices of the software group of elements as a whole and the non-software elements. Autodesk then further allocates consideration within the software group to the respective elements within that group using the residual method as described above. Autodesk exercises judgment and uses estimates in connection with the determination of the amount of revenue to be recognized in each accounting period. Autodesk allocates the total arrangement consideration among the various elements based on a selling price hierarchy. The selling price for a deliverable is based on its VSOE if available, third-party evidence ("TPE") if VSOE is not available, or the best estimated selling price ("BESP") if neither VSOE nor TPE is available. BESP represents the price at which Autodesk would transact for the deliverable if it were sold regularly on a standalone basis. To establish BESP for those elements for which neither VSOE nor TPE are available, Autodesk performs a quantitative analysis of pricing data points for historical standalone transactions involving such elements for a twelve-month period. As part of this analysis, Autodesk monitors and evaluates the BESP against actual pricing to ensure that it continues to represent a reasonable estimate of the standalone selling price, considering several other external and internal factors including, but not limited to, pricing and discounting practices, contractually stated prices, the geographies in which Autodesk offers products and services, and the type of customer (i.e. distributor, value-added reseller, and direct end user, among others). Autodesk analyzes BESP at least annually or on a more frequent basis if a significant change in our business necessitates a more timely analysis, or if significant selling price variances are experienced. In situations when Autodesk has multiple contracts with a single counterparty, Autodesk uses the guidance in ASC 985-605 to evaluate both the form and the substance of the arrangements to determine if they should be combined and accounted for as one arrangement or as separate arrangements. Autodesk’s assessment of likelihood of collection is also a critical element in determining the timing of revenue recognition. If collection is not probable, the revenue will be deferred until payment is received. Autodesk's Subscription revenue consists of two components: maintenance revenue for our software products and revenue for our cloud service offerings, including Autodesk 360. Autodesk's maintenance program provides our commercial and educational customers of perpetual products with a cost effective and predictable budgetary option to obtain the productivity benefits of our new releases and enhancements when and if released during the term of their contracts. Under Autodesk's maintenance program, customers are eligible to receive unspecified upgrades when and if available, downloadable training courses, and online support. Autodesk recognizes maintenance revenue ratably over the term of the maintenance agreement, which is generally between one and three years but can occasionally be as long as five years. Revenue for Autodesk's cloud service offerings is recognized ratably over the contract term commencing with the date Autodesk's service is made available to customers and all other revenue recognition criteria have been satisfied. License and other revenue consists of two components: product license revenue and other revenue. Product license revenue includes software license revenue from the sale of perpetual licenses, term-based licenses from our desktop subscription and enterprise offerings, and product revenue for Creative Finishing. Other revenue includes revenue from consulting, training, Autodesk Developers Network and Creative Finishing customer support, and is recognized over time, as the services are performed.
Taxes Collected from Customers	Taxes Collected from Customers Autodesk nets taxes collected from customers against those remitted to government authorities in the consolidated financial statements. Accordingly, taxes collected from customers are not reported as revenue.
Shipping and Handling Cost	Shipping and Handling Costs Shipping and handling costs are included in cost of revenue for all periods presented.
Stock-Based Compensation Expense	Autodesk determines the grant date fair value of its share-based payment awards using a Black-Scholes Merton ("BSM") option pricing model or the quoted stock price on the date of grant, unless the awards are subject to market conditions, in which case Autodesk uses a binomial-lattice model (e.g., Monte Carlo simulation model). The Monte Carlo simulation model utilizes multiple input variables to estimate the probability that market conditions will be achieved. Autodesk estimates expected volatility for stock-based awards based on the average of the following two measures. The first is a measure of historical volatility in the trading market for the Company’s common stock, and the second is the implied volatility of traded forward call options to purchase shares of the Company’s common stock. The expected volatility for performance stock units ("PSUs") subject to market conditions includes the expected volatility of Autodesk's peer companies within the S&P Computer Software Select Index. Autodesk estimates the expected life of stock-based awards using both exercise behavior and post-vesting termination behavior as well as consideration of outstanding options. Autodesk did not pay cash dividends in fiscal 2017, 2016, or 2015 and does not anticipate paying any cash dividends in the foreseeable future. Consequently, an expected dividend yield of zero is used in the BSM option pricing model and the Monte Carlo simulation model. The risk-free interest rate used in the BSM option pricing model and the Monte Carlo simulation model for stock-based awards is the historical yield on U.S. Treasury securities with equivalent remaining lives. Autodesk recognizes expense only for the stock-based awards that ultimately vest.
Advertising Expenses	Advertising Expenses Advertising costs are expensed as incurred.
Net (Loss) Income Per Share	Net (Loss) Income Per Share Basic net (loss) income per share is computed based on the weighted average number of shares of common stock outstanding for the period, excluding stock options and restricted stock. Diluted net (loss) income per share is computed based upon the weighted average shares of common shares outstanding for the period and potentially dilutive common shares, including the effect of stock options and restricted stock units under the treasury stock method.
Defined Benefit Pension Plans	Defined Benefit Pension Plans The funded status of Autodesk's defined benefit pension plans is recognized in the Consolidated Balance Sheets. The funded status is measured as the difference between the fair value of plan assets and the projected benefit obligation for the fiscal years presented. The projected benefit obligation represents the actuarial present value of benefits expected to be paid upon retirement based on employee services already rendered and estimated future compensation levels. The fair value of plan assets represents the current market value of Autodesk's cumulative company and participant contributions made to the various plans in effect. Net periodic benefit cost is recorded in the Consolidated Statements of Operations and includes service cost, interest cost, expected return on plan assets, amortization of prior service costs, and gains or losses previously recognized as a component of other comprehensive income. Certain events, such as changes in the employee base, plan amendments, and changes in actuarial assumptions may result in a change in the defined benefit obligation and the corresponding change to other comprehensive income. Gains and losses and prior service costs not recognized as a component of net periodic benefit cost in the Consolidated Statements of Operations as they arise are recognized as a component of other comprehensive (loss) income in the Consolidated Statements of Comprehensive (Loss) Income. Those gains and losses and prior service costs are subsequently amortized as a component of net periodic benefit cost over the average remaining service lives of the plan participants using a corridor approach to determine the portion of gain or loss subject to amortization. The measurement of projected benefit obligations and net periodic benefit cost is based on estimates and assumptions that reflect the terms of the plans and use participant-specific information such as compensation, age and years of services, as well as certain assumptions, including estimates of discount rates, expected return of plan assets, rate of compensation increases, interest rates, and mortality rates.
Accounting Standards	Accounting Standards in Fiscal 2017 With the exception of those discussed below, there have been no recent changes in accounting pronouncements issued by the FASB or adopted by the Company during the fiscal year ended January 31, 2017, that are of significance, or potential significance, to the Company. Accounting Standards Adopted Effective in the second quarter of fiscal 2017, Autodesk adopted FASB's Accounting Standards Update No. 2016-09 ("ASU 2016-09") regarding ASC Topic 718, “Improvements to Employee Share-Based Payment Accounting.” The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement when the awards vest or are settled. In addition, cash flows related to excess tax benefits will no longer be separately classified as a financing activity apart from other income tax cash flows. The standard also increases the amount of shares an employer can withhold for tax purposes without triggering liability accounting, clarifies that all cash payments made on an employee's behalf for withheld shares should be presented as a financing activity in the statements of cash flows, and provides an entity-wide accounting policy election to account for forfeitures as they occur. Upon adoption, under the modified retrospective transition method, the Company recognized the previously unrecognized excess tax benefits as increases in deferred tax assets for tax credit and tax loss carryovers, of which $116.5 million were available to offset liabilities for uncertain tax benefits. This reduction in liabilities for uncertain tax benefits resulted in a cumulative-effect increase of $116.5 million to the February 1, 2016, opening accumulated deficit balance. Tax attributes not available to offset uncertain tax benefits were fully offset by a valuation allowance. Autodesk elected to account for forfeitures as they occur using a modified retrospective transition method, which resulted in a cumulative-effect adjustment of $6.9 million to reduce the February 1, 2016 opening accumulated deficit balance. Autodesk elected to apply the change in presentation of excess tax benefits in the statements of cash flows retrospectively to all periods presented and no longer classifies them as a reduction from operating cash flows. The adoption had a $0.5 million impact to net cash provided by operating activities and net cash used in financing activities for fiscal 2015. There adoption had no impact for fiscal 2016. The retrospective presentation requirements for cash flows related to employee taxes paid for withheld shares had no impact to any prior period since such cash flows have historically been presented as a financing activity. Additional amendments to the accounting for minimum statutory withholding tax requirements had no impact to opening accumulated deficit as of February 1, 2016 as Autodesk does not withhold more than the minimum statutory requirements. Effective in the first quarter of fiscal 2017, Autodesk adopted FABS's Accounting Standards Update No. 2015-16 ("ASU 2015-05") regarding Subtopic 350-40, “Intangibles - Goodwill and Other - Internal-Use Software: Customer's Accounting for Fees Paid in a Cloud Computing Arrangement.” The amendments in this ASU provide guidance about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the customer should account for the software license element of the arrangement consistent with other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. The amendments for ASU-2015-05 were prospectively applied and did not have a material impact on Autodesk's consolidated financial statements. Effective in the first quarter of fiscal 2017, Autodesk adopted FASB's Accounting Standards Update No. 2015-07 ("ASU 2015-07") regarding ASC Topic 820 "Fair Value Measurement: Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)." The amendments in ASU 2015-07 remove the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. The amendments also limit certain disclosures to investments for which the entity has elected to measure at fair value using the net asset value per share practical expedient. The amendments were applied retrospectively by removing from the fair value hierarchy any investments for which fair value is measured using the net asset value per share practical expedient. Adoption did not have a material impact on its consolidated financial statements. Recently Issued Accounting Standards In February 2017, FASB issued Accounting Standards Update No. 2017-05 ("ASU 2017-05"), "Other Income– Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets." The ASU, among other things, clarifies the scope of the derecognition of nonfinancial assets, the definition of in substance financial assets, and impacts the accounting for partial sales of nonfinancial assets by requiring full gain recognition upon the sale. The amendments are effective for Autodesk's fiscal year beginning February 1, 2018. The guidance may be applied retrospectively for all periods presented or retrospectively with a cumulative-effect adjustment at the date of adoption. Autodesk is currently evaluating the impact that the adoption of this guidance will have on its consolidated statements of financial condition and results of operations. In January 2017, FASB issued Accounting Standards Update No. 2017-04 ("ASU 2017-04"), "Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" which simplifies the subsequent measurement of goodwill to eliminate Step 2 from the goodwill impairment test. In addition, it eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if that fails that qualitative test, to perform Step 2 of the goodwill impairment test. Therefore, the same impairment assessment applies to all reporting units. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2020 unless Autodesk elects early adoption. The new guidance is required to be applied on a prospective basis. Autodesk does not believe ASU 2017-04 will have a material impact on its consolidated financial statements and plans to early adopt in fiscal 2018. In January 2017, FASB issued Accounting Standards Update No. 2017-01 ("ASU 2017-01"), "Business Combinations: Clarifying the Definition of a Business" which provides a more robust framework to use in determining when a set of assets and activities is a business. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018 unless Autodesk elects early adoption, which Autodesk is still evaluating. The new guidance is required to be applied on a prospective basis. The effect of the implementation will depend upon the nature of the Company's future acquisitions, if any. In October 2016, FASB issued Accounting Standards Update No. 2016-16 ("ASU 2016-16"), “Income Taxes: Intra-Entity Transfers of Assets Other than Inventory” which requires that entities recognize the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The amendments will be effective for Autodesk's fiscal year beginning February 1, 2018 unless Autodesk elects early adoption. The new guidance is required to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact and timing of adoption. In June 2016, the FASB issued Accounting Standards Update No. 2016-13 ("ASU 2016-13") regarding ASC Topic 326, "Financial Instruments - Credit Losses," which modifies the measurement of expected credit losses of certain financial instruments. Autodesk plans to adopt ASU 2016-13 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2020 and does not believe the ASU will have a material impact on its consolidated financial statements. In February 2016, the FASB issued Accounting Standards Update No. 2016-02 ("ASU 2016-02") regarding ASC Topic 842, "Leases." The amendments in this ASU require balance sheet recognition of lease assets and lease liabilities by lessees for leases classified as operating leases, with an optional policy election to not recognize lease assets and lease liabilities for leases with a term of 12 months or less. The amendments also require new disclosures, including qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. Autodesk plans to adopt ASU 2016-02 as of the effective date which represents Autodesk’s fiscal year beginning February 1, 2019. The amendments require a modified retrospective approach with optional practical expedients. Autodesk is currently evaluating the accounting, transition, and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption. In January 2016, the FASB issued Accounting Standards Update No. 2016-01 ("ASU 2016-01") regarding ASC Topic 825-10, "Financial Instruments - Overall." The amendments address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments, and require equity securities to be measured at fair value with changes in fair value recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment for impairment quarterly at each reporting period. The amendments in ASU 2016-01 will be effective for Autodesk's fiscal year beginning February 1, 2018. An entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, with prospective adoption of the amendments related to equity securities without readily determinable fair values existing as of the date of adoption. Autodesk does not believe ASU 2016-01 will have a material impact on its consolidated financial statements. In May 2014, the FASB issued Accounting Standards Update No. 2014-09 ("ASU 2014-09") regarding ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2014-09 provides principles for recognizing revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued Accounting Standards Update No. 2015-14 to defer the effective date by one year with early adoption permitted as of the original effective date. In addition, the FASB issued Accounting Standards Update No. 2016-08, Accounting Standards Update No. 2016-10, Accounting Standards Update No. 2016-12, and Accounting Standard Update No. 2016-20 in March 2016, April 2016, May 2016, and December 2016, respectively, to help provide interpretive clarifications on the new guidance in ASC Topic 606. Autodesk currently plans to adopt ASU 2014-09 as of February 1, 2018, using the modified retrospective transition method. In terms of Autodesk's evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company's preliminary assessment is that there should be no material change in the timing and amount of the recognition of revenue for the majority of the Company's product subscription offerings and enterprise arrangements. This preliminary assessment is based on the Company's analysis that the related software and cloud services in a majority of the product subscription and enterprise offerings are not distinct in the context of the contract as they are considered highly interrelated and represent a single combined performance obligation that should be recognized over time. Due to the complexity of certain of our contracts, the actual revenue recognition treatment required under the new standard for these arrangements may be dependent on contract-specific terms and vary in some instances. A limited number of Autodesk's product subscriptions do not incorporate substantial cloud services, and under ASU 2014-09 will be recognized as distinct license and service performance obligations. Revenue allocated to the licenses in these offerings will be recognized at a point in time instead of over the contract term. Autodesk does not currently believe the impact of the change to timing of revenue recognition for these limited offerings will be material. The company is currently evaluating its other revenue streams, but does not believe ASU 2014-09 will have a material impact. Furthermore, the Company has made and will continue to make investments in systems and processes to enable timely and accurate reporting under the new standard. The company currently expects that necessary operational changes will be implemented prior to the adoption date. As part of our preliminary evaluation, Autodesk has also considered the impact of the guidance in ASC Topic 340-40, "Other Assets and Deferred Costs; Contracts with Customers," and the interpretations of the FASB Transition Resource Group for Revenue Recognition ("TRG") from their November 7, 2016 meeting with respect to capitalization and amortization of incremental costs of obtaining a contract. As a result of this new guidance, Autodesk preliminarily believes that the Company will capitalize additional costs of obtaining the contract, which primarily relates to sales commissions. The amortization period for the Company's deferred costs will be recognized over the period of benefit. Autodesk's current accounting policy is to expense such costs as incurred. While Autodesk continues to assess the potential impacts of the new standard, including the areas described above, and disclosure requirements of the standard, Autodesk does not know or cannot reasonably estimate quantitative information related to the impact of the new standard on our financial statements except as specifically noted above.

Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2017

Accounting Policies [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

Accounts receivable, net, consisted of the following as of January 31:



	2017			2016
Trade accounts receivable	$	477.5		$	700.1
Less: Allowance for doubtful accounts	(1.5		)	(7.6		)
Product returns reserve	(0.2		)	(1.6		)
Partner programs and other obligations	(23.5		)	(37.3		)
Accounts receivable, net	$	452.3		$	653.6

Concentration Risk Disclosure

Geographical concentrations of consolidated cash, cash equivalents, and marketable securities held by Autodesk as of January 31:



	2017		2016
United States	9	%	26	%
Other Americas	1	%	1	%
Europe, Middle East, and Africa (“EMEA”)	80	%	50	%
Asia Pacific (“APAC”)	10	%	23	%

Property, Plant and Equipment

Computer equipment, software, furniture, leasehold improvements and the related accumulated depreciation at January 31 were as follows:



	2017			2016
Computer hardware, at cost	$	206.1		$	202.7
Computer software, at cost	73.5			85.6
Leasehold improvements, land and buildings, at cost	206.3			202.9
Furniture and equipment, at cost	58.2			59.0
Computer software, hardware, leasehold improvements, furniture, and equipment, at cost	544.1			550.2
Less: Accumulated depreciation	(385.5		)	(380.9		)
Computer software, hardware, leasehold improvements, furniture, and equipment, net	$	158.6		$	169.3

Schedule of Finite-Lived Intangible Assets by Major Class

Other intangible assets and related accumulated amortization at January 31 were as follows:



	2017			2016
Developed technologies, at cost	$	583.6		$	571.4
Customer relationships, trade names, patents, and user lists, at cost (1)	375.9			371.6
Other intangible assets, at cost (2)	959.5			943.0
Less: Accumulated amortization	(862.0		)	(796.2		)
Other intangible assets, net	$	97.5		$	146.8

_______________


(1)	Included in “Other assets” in the accompanying Consolidated Balance Sheets.


(2)	Includes the effects of foreign currency translation.

Schedule of Expected Amortization Expense

Excluding in-process research and development, expected future amortization expense for developed technologies, customer relationships, trade names, patents, and user lists for each of the fiscal years ended thereafter is as follows:



	Fiscal Year ended January 31,
2018	$	37.2
2019	28.9
2020	16.7
2021	8.3
2022	3.7
Thereafter	0.1
Total	$	94.9

Schedule of Goodwill

The change in the carrying amount of goodwill during the fiscal years ended January 31, 2017 and January 31, 2016 were as follows:



	2017			2016
Goodwill, beginning of the year	$	1,684.2		$	1,605.4
Less: accumulated impairment losses, beginning of the year	(149.2		)	(149.2		)
Additions arising from acquisitions during the year (1)	62.8			97.3
Effect of foreign currency translation, measurement period adjustments, and other (2)	(36.7		)	(18.5		)
Goodwill, end of the year	$	1,561.1		$	1,535.0

_______________


(1)	The fiscal 2016 balance has not been adjusted here for measurement period adjustments made in fiscal 2017. Refer to Note 5, "Acquisitions" for additional information on the amounts recorded in fiscal 2017 that relate to goodwill from fiscal 2016 acquisitions.


(2)	Purchase accounting adjustments reflect revisions made to the Company’s preliminary purchase price allocations during fiscal 2017 and 2016.

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table summarizes stock-based compensation expense for fiscal 2017, 2016, and 2015, respectively, as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Cost of subscription	$	7.0		$	5.7		$	4.3
Cost of license and other revenue	7.1			6.1			4.6
Marketing and sales	94.1			85.2			72.4
Research and development	81.3			70.4			56.0
General and administrative	32.3			29.8			28.3
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan ("ESPP") purchases	221.8			197.2			165.6
Tax benefit	(2.6		)	(1.6		)	(45.2		)
Stock-based compensation expense related to stock awards and ESPP purchases, net	$	219.2		$	195.6		$	120.4

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

Autodesk uses the following assumptions to estimate the fair value of stock-based awards:



	Fiscal Year Ended		Fiscal Year Ended		Fiscal Year Ended
	January 31, 2017		January 31, 2016		January 31, 2015
	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP	Performance Stock Unit	ESPP
Range of expected volatilities	38 - 39%	30 - 40%	27%	28 -29%	30%	29 - 33%
Range of expected lives (in years)	N/A	0.5 - 2.0	N/A	0.5 - 2.0	N/A	0.5 - 2.0
Expected dividends	—%	—%	—%	—%	—%	—%
Range of risk-free interest rates	0.6 - 0.7%	0.5 - 0.9%	0.2%	0.1 - 0.7%	0.1%	0.0 - 0.6%

Financial Instruments (Tables)

12 Months Ended

Jan. 31, 2017

Investments, All Other Investments [Abstract]

Cost and Fair Value of Financial Instruments Disclosure



			January 31, 2017
			Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value		Level 1		Level 2		Level 3
Cash equivalents (1):
	Agency bonds		$	6.0	$	—	$	—		$	6.0	$	6.0	$	—	$	—
	Certificates of deposit		63.1		—		—			63.1		63.1		—		—
	Commercial paper		207.4		—		—			207.4		—		207.4		—
	Corporate debt securities		40.2		—		—			40.2		40.2		—		—
	Custody cash deposit		3.2		—		—			3.2		3.2		—		—
	Money market funds		256.5		—		—			256.5		—		256.5		—
	Municipal bonds		5.0		—		—			5.0		5.0		—		—
	Sovereign debt		15.0		—		—			15.0		—		15.0		—
	U.S. government securities		309.5		—		—			309.5		309.5		—		—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	13.2		—					13.2		13.2		—		—
		Asset backed securities	19.6		—		—			19.6		—		19.6		—
		Certificates of deposit	157.3		—		—			157.3		157.3		—		—
		Commercial paper	109.2		—		—			109.2		—		109.2		—
		Corporate bonds	234.7		—		(0.2		)	234.5		234.5		—		—
		Municipal bonds	43.4		—		—			43.4		43.4		—		—
		Sovereign debt	30.0		—		—			30.0		—		30.0		—
		U.S. government securities	32.3		—		—			32.3		32.3		—		—
	Short-term trading securities
		Mutual funds	44.8		2.5		—			47.3		47.3		—		—
	Long-term available-for-sale
		Agency bonds	7.1		—		—			7.1		7.1		—		—
		Asset backed securities	65.8		0.1		—			65.9		—		65.9		—
		Corporate bonds	172.1		0.1		(0.1		)	172.1		172.1		—		—
		Municipal bonds	10.7		—		—			10.7		10.7		—		—
		Sovereign debt	1.5		—		—			1.5		—		1.5		—
		U.S. government securities	48.8		0.1		—			48.9		48.9		—		—
Convertible debt securities (2)			4.9		2.3		(1.6		)	5.6		—		—		5.6
Derivative contracts (3)			2.2		12.3		(11.7		)	2.8		—		1.5		1.3
		Total	$	1,903.5	$	17.4	$	(13.6	)	$	1,907.3	$	1,193.8	$	706.6	$	6.9

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.


(2)	Considered "available for sale" and included in "Other assets" in the accompanying Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” "Other assets," or “Other accrued liabilities” in the accompanying Consolidated Balance Sheets.



			January 31, 2016
			Amortized Cost		Gross unrealized gains		Gross unrealized losses			Fair Value		Level 1		Level 2		Level 3
Cash equivalents (1):
	Agency bonds		$	8.5	$	—	$	—		$	8.5	$	8.5	$	—	$	—
	Certificates of deposit		267.6		—		—			267.6		267.6		—		—
	Commercial paper		106.6		—		—			106.6		—		106.6		—
	Custody cash deposit		2.1		—		—			2.1		2.1		—		—
	Money market funds		382.4		—		—			382.4		—		382.4		—
	Municipal bonds		5.0		—		—			5.0		5.0		—		—
	U.S. government securities		103.0		—		—			103.0		103.0		—		—
Marketable securities:
	Short-term available-for-sale
		Agency bonds	40.0		—		(0.1		)	39.9		39.9		—		—
		Asset backed securities	7.3		—		—			7.3		—		7.3		—
		Certificates of deposit	190.3		—		—			190.3		190.3		—		—
		Commercial paper	141.1		—		—			141.1		—		141.1		—
		Corporate debt securities	377.1		0.1		(0.3		)	376.9		376.9		—		—
		Municipal bonds	9.7		—		—			9.7		9.7		—		—
		Sovereign debt	20.1		—		—			20.1		—		20.1		—
		U.S. government securities	74.6		—		—			74.6		74.6		—		—
	Short-term trading securities
		Mutual funds	38.8		0.4		(1.2		)	38.0		38.0		—		—
	Long-term available-for-sale
		Agency bonds	56.8		0.1		—			56.9		56.9		—		—
		Asset backed securities	36.5		0.1		—			36.6		—		36.6		—
		Corporate debt securities	320.9		0.3		(0.8		)	320.4		320.4		—		—
		Municipal bonds	2.9		—		—			2.9		2.9		—		—
		Sovereign debt	16.9		—		—			16.9		—		16.9		—
		U.S. government securities	98.4		0.3		(0.1		)	98.6		98.6		—		—
Convertible debt securities (2)			2.5		2.0		(1.1		)	3.4		—		—		3.4
Derivative contracts (3)			1.5		7.8		(7.4		)	1.9		—		1.6		0.3
		Total	$	2,310.6	$	11.1	$	(11.0	)	$	2,310.7	$	1,594.4	$	712.6	$	3.7

____________________


(1)	Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.


(2)	Considered "available for sale" securities and included in "Other assets" in the accompanying Consolidated Balance Sheets.


(3)	Included in “Prepaid expenses and other current assets,” "Other assets," or “Other accrued liabilities” in the accompanying Consolidated Balance Sheets.

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

A reconciliation of the change in Autodesk’s Level 3 items for the fiscal year ended January 31, 2017 was as follows:



	Fair Value Measurements Using Significant Unobservable Inputs
	(Level 3)
		Derivative Contracts			Convertible Debt Securities			Total
Balances, January 31, 2016		$	0.3		$	3.4		$	3.7
Purchases		1.1			4.0			5.1
Settlements		(0.7		)	(1.7		)	(2.4		)
Gains (losses) included in earnings		0.6			0.1			0.7
Gains included in OCI		—			(0.2		)	(0.2		)
Balances, January 31, 2017		$	1.3		$	5.6		$	6.9

Available-for-sale Securities

The following table summarizes the estimated fair value of Autodesk's “available-for-sale securities” classified by the contractual maturity date of the security:



	January 31, 2017
	Cost		Fair Value
Due within in 1 year	$	635.6	$	635.9
Due in 1 year through 5 years	305.4		305.8
Due in 5 years through 10 years	2.6		2.6
Due after 10 years	7.0		7.0
Total	$	950.6	$	951.3

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The fair value of derivative instruments in Autodesk’s Consolidated Balance Sheets were as follows as of January 31, 2017 and January 31, 2016:



	Balance Sheet Location	Fair Value at
	Balance Sheet Location	January 31, 2017		January 31, 2016
Derivative Assets
Foreign currency contracts designated as cash flow hedges	Prepaid expenses and other current assets	$	10.1	$	3.4
Derivatives not designated as hedging instruments	Prepaid expenses and other current assets and Other assets	3.2		4.9
Total derivative assets		$	13.3	$	8.3
Derivative Liabilities
Foreign currency contracts designated as cash flow hedges	Other accrued liabilities	$	4.5	$	3.4
Derivatives not designated as hedging instrument	Other accrued liabilities	6.0		3.0
Total derivative liabilities		$	10.5	$	6.4

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance



	Foreign Currency Contracts
	Fiscal Year Ended January 31,
	2017			2016			2015
Amount of gain recognized in accumulated other comprehensive income on derivatives (effective portion)	$	6.3		$	2.2		$	46.4
Amount and location of gain reclassified from accumulated other comprehensive income into income (effective portion)
Net revenue	$	9.2		$	39.8		$	10.5
Operating expenses	(1.8		)	(10.5		)	(3.5		)
Total	$	7.4		$	29.3		$	7.0
Amount and location of (loss) gain recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)
Interest and other expense, net	$	(0.3	)	$	(0.7	)	$	0.9



	Fiscal Year Ended January 31,
	2017			2016			2015
Amount and location of (loss) gain recognized in income on derivatives
Interest and other expense, net	$	(11.1	)	$	(1.7	)	$	(25.5	)

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee and Director Stock Plans (Tables)

12 Months Ended

Jan. 31, 2017

Schedule of Share-based Compensation, Stock Options, Activity

A summary of stock option activity for the fiscal year ended January 31, 2017 is as follows:



	Number of Shares (in millions)		Weighted average exercise price per share		Weighted average remaining contractual term (in years)	Aggregate Intrinsic Value (1) (in millions)
Options outstanding at January 31, 2016	1.6		$	37.06
Exercised	(1.0	)	35.85
Options vested, exercisable and outstanding at January 31, 2017	0.6		$	39.25	3.1	$	25.8
Options available for grant at January 31, 2017	13.3

_______________


(1)	Represents the total pre-tax intrinsic value, based on Autodesk’s closing stock price of $81.34 per share as of January 31, 2017, which would have been received by the option holders had all option holders exercised their options as of that date.

Intrinsic Value of Options Exercised and Weighted Average Grant Date Fair Value of Stock Options Granted

The following table summarizes information about the pre-tax intrinsic value of options exercised during the fiscal years ended January 31, 2017, 2016, and 2015:



	Fiscal year ended January 31,
	2017		2016		2015
Pre-tax intrinsic value of options exercised (1)	$	32.0	$	32.6	$	67.6

——————


(1)	The intrinsic value of options exercised is calculated as the difference between the exercise price of the option and the market value of the stock on the date of exercise.

The following table summarizes information about options vested and exercisable, and outstanding at January 31, 2017:



	Number of Shares (in millions)	Weighted average exercise price per share
Range of per-share exercise prices:
$27.40 - $38.55	0.2	$	33.00
$38.56 - $42.38	0.3	41.62
$42.39 - $43.81	0.1	43.81
	0.6	$	39.25

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

The following table summarizes information about options vested and exercisable, and outstanding at January 31, 2017:



	Number of Shares (in millions)	Weighted average exercise price per share
Range of per-share exercise prices:
$27.40 - $38.55	0.2	$	33.00
$38.56 - $42.38	0.3	41.62
$42.39 - $43.81	0.1	43.81
	0.6	$	39.25

Restricted Share Activity Disclosure

A summary of restricted stock activity for the fiscal year ended January 31, 2017 is as follows:



	Unreleased Restricted Stock Units (in thousands)		Weighted average grant date fair value per share
Unvested restricted stock at January 31, 2016	7,739.6		$	51.80
Granted	4,226.3		65.95
Vested	(3,585.0	)	52.12
Canceled/Forfeited	(725.2	)	53.25
Performance Adjustment (1)	(33.3	)	63.74
Unvested restricted stock at January 31, 2017	7,622.4		$	60.13

_______________


(1)	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2016 performance period. The performance stock units were attained at rates ranging from 86.1% to 98.0% of the target award.

Employee and Director Stock Options Outstanding



	(a)	(b)		(c)
Plan category	Number of securities to be issued upon exercise of outstanding options (in millions)	Weighted-average exercise price of outstanding options		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (in millions)
Equity compensation plans approved by security holders	8.2	$	39.25	58.9	(1)
Total	8.2	$	39.25	58.9

____________________


(1)	Included in this amount are 45.6 million securities available for future issuance under Autodesk’s ESPP.

Income Taxes (Tables)

12 Months Ended

Jan. 31, 2017

Income Tax Disclosure [Abstract]

Provision for income taxes

The provision for income taxes consists of the following:



	Fiscal year ended January 31,
	2017			2016			2015
Federal:
Current	$	1.6		$	(4.7	)	$	(43.8	)
Deferred	8.4			220.9			(11.9		)
State:
Current	(1.9		)	0.5			(13.2		)
Deferred	1.3			20.9			9.0
Foreign:
Current	93.9			68.4			69.5
Deferred	(45.0		)	4.2			(8.4		)
	$	58.3		$	310.2		$	1.2

Differences between the U.S. statutory rate and the aggregate income tax provision

The differences between the U.S. statutory rate and the aggregate income tax provision are as follows:



	Fiscal year ended January 31,
	2017			2016			2015
Income tax provision (benefit) at U.S. Federal statutory rate	$	(177.0	)	$	(7.1	)	$	29.0
State income tax benefit, net of the U.S. Federal benefit	(17.3		)	(7.6		)	(4.0		)
Foreign income taxed at rates different from the U.S. statutory rate	22.3			(29.4		)	(40.0		)
U.S. valuation allowance	233.0			345.0			2.9
Increase in attributes due to ASU 2016-9 adoption	(119.4		)	—			—
Change in valuation allowance from ASU 2016-9 adoption	119.4			—			—
Tax effect of non-deductible stock-based compensation	18.8			19.3			15.7
Stock compensation windfall shortfall	(23.0		)	—			—
Research and development tax credit benefit	(10.3		)	(9.4		)	(7.2		)
Closure of income tax audits and changes in uncertain tax positions	8.2			(4.7		)	(0.7		)
Tax effect of officer compensation in excess of $1.0 million	2.2			1.4			2.4
Non-deductible expenses	2.0			2.6			2.2
Other	(0.6		)	0.1			0.9
	$	58.3		$	310.2		$	1.2

Components of Deferred Tax Assets and Liabilities

Significant components of Autodesk’s deferred tax assets and liabilities are as follows:



	January 31,
	2017			2016
Stock-based compensation	$	37.6		$	37.5
Research and development tax credit carryforwards	136.7			91.3
Foreign tax credit carryforwards	127.3			51.1
Accrued compensation and benefits	39.5			41.5
Other accruals not currently deductible for tax	18.7			23.6
Purchased technology and capitalized software	76.9			64.3
Fixed assets	24.3			18.6
Tax loss carryforwards	173.6			17.6
Deferred Revenue	128.3			56.7
Other	27.6			13.9
Total deferred tax assets	790.5			416.1
Less: valuation allowance	(748.0		)	(398.0		)
Net deferred tax assets	42.5			18.1
Indefinite lived intangibles	(70.1		)	(54.1		)
Unremitted earnings of foreign subsidiaries	—			(22.4		)
Total deferred tax liabilities	(70.1		)	(76.5		)
Net deferred tax assets	$	(27.6	)	$	(58.4	)

Unrecognized Tax Benefits Reconciliation, Table

A reconciliation of the beginning and ending amount of the gross unrecognized tax benefits is as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Gross unrecognized tax benefits at the beginning of the fiscal year	$	254.3		$	245.8		$	222.1
Increases for tax positions of prior years	11.9			1.4			3.2
Decreases for tax positions of prior years	(4.1		)	(7.0		)	(2.5		)
Increases for tax positions related to the current year	11.1			15.8			33.2
Decreases relating to settlements with taxing authorities	(10.8		)	(0.5		)	(5.4		)
Reductions as a result of lapse of the statute of limitations	(1.0		)	(1.2		)	(4.8		)
Gross unrecognized tax benefits at the end of the fiscal year	$	261.4		$	254.3		$	245.8

Acquisitions (Tables)

12 Months Ended

Jan. 31, 2017

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed



Developed technologies	$	18.8
Customer relationships and other non-current intangible assets	10.2
Trade name	3.8
Goodwill	62.8
Deferred Revenue (current and non-current)	(2.1		)
Deferred tax liability	(7.1		)
Net tangible assets	0.6
	$	87.0



	netfabb (1)			Other (2)
Developed technologies	$	6.6		$	27.3
Customer relationships	6.2			12.9
Trade name	1.4			4.7
Goodwill	36.1			63.7
Deferred revenue (current and non-current)	(1.0		)	(0.7		)
Deferred tax liability	(3.9		)	(1.6		)
Net tangible (liabilities) assets	(2.9		)	0.5
Total	$	42.5		$	106.8

_______________


(1)	During fiscal 2017, Autodesk recorded measurement period adjustments in our condensed consolidated balance sheet. The measurement period adjustments were recorded as a $3.3 million increase to goodwill, with an offsetting $3.3 million increase to net tangible liabilities.


(2)	During fiscal 2017, Autodesk recorded a measurement period adjustment in our condensed consolidated balance sheet. The measurement period adjustment was recorded as an $0.8 million decrease to goodwill, with an offsetting $0.8 million decrease to deferred tax liability.

Commitments and Contingencies (Tables)

12 Months Ended

Jan. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Aggregate Future Minimum Lease Payments

At January 31, 2017, the aggregate future minimum lease payments required were as follows:




2018	$	60.7
2019	48.4
2020	31.4
2021	21.1
2022	12.2
Thereafter	41.2
	215.0
Less: Sublease income	2.5
	$	212.5

Rent expense related to these operating leases recognized on a straight-line basis over the lease period, was as follows:



	Fiscal Year Ended January 31,
	2017		2016		2015
Rent expense	$	65.3	$	58.7	$	55.0

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

Accumulated Other Comprehensive Income (loss) [Abstract]

Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Jan. 31, 2017

Schedule of Accumulated Other Comprehensive (Loss) Income

Accumulated other comprehensive loss, net of taxes, consisted of the following:



	Net Unrealized Gains (Losses) on Derivative Instruments			Net Unrealized Gains (Losses) on Available for Sale Securities			Defined Benefit Pension Components			Foreign Currency Translation Adjustments			Total
Balances, January 31, 2015	$	42.8		$	1.6		$	(23.7	)	$	(74.0	)	$	(53.3	)
Other comprehensive income (loss) before reclassifications	1.6			(1.3		)	(6.8		)	(35.2		)	(41.7		)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(29.3		)	(0.1		)	1.3			—			(28.1		)
Tax effects	0.6			—			0.9			0.5			2.0
Net current period other comprehensive (loss) income	(27.1		)	(1.4		)	(4.6		)	(34.7		)	(67.8		)
Balances, January 31, 2016	15.7			0.2			(28.3		)	(108.7		)	(121.1		)
Other comprehensive income (loss) before reclassifications	7.4			3.3			(5.8		)	(52.3		)	(47.4		)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(7.4		)	(1.5		)	1.2			—			(7.7		)
Tax effects	(1.1		)	(0.5		)	(0.9		)	0.2			(2.3		)
Net current period other comprehensive (loss) income	(1.1		)	1.3			(5.5		)	(52.1		)	(57.4		)
Balances, January 31, 2017	$	14.6		$	1.5		$	(33.8	)	$	(160.8	)	$	(178.5	)

Net (Loss) Income Per Share (Tables)

12 Months Ended

Jan. 31, 2017

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table sets forth the computation of the numerators and denominators used in the basic and diluted net (loss) income per share amounts:



	Fiscal Year Ended January 31,
	2017			2016			2015
Numerator:
Net (loss) income	$	(582.1	)	$	(330.5	)	$	81.8
Denominator:
Denominator for basic net (loss) income per share—weighted average shares	222.7			226.0			227.1
Effect of dilutive securities (1)	—			—			5.3
Denominator for dilutive net (loss) income per share	222.7			226.0			232.4
Basic net (loss) income per share	$	(2.61	)	$	(1.46	)	$	0.36
Diluted net (loss) income per share	$	(2.61	)	$	(1.46	)	$	0.35

____________________


(1)	The effect of dilutive securities of 4.6 million and 4.7 million shares for the fiscal year ended January 31, 2017 and 2016, respectively, have been excluded from the calculation of diluted net (loss) income per share as those shares would have been anti-dilutive due to the net loss incurred during these fiscal years.

Segments (Tables)

12 Months Ended

Jan. 31, 2017

Segment Reporting [Abstract]

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area

Information regarding Autodesk’s revenue by geographic area and product family is as follows:



	Fiscal year ended January 31,
	2017		2016		2015
Net revenue by geographic area (1):
Americas
U.S.	$	742.1	$	803.9	$	736.4
Other Americas	129.8		168.9		161.6
Total Americas	871.9		972.8		898.0
Europe, Middle East, and Africa	800.4		934.6		980.0
Asia Pacific	358.7		596.7		634.2
Total net revenue	$	2,031.0	$	2,504.1	$	2,512.2

Net revenue by product family:
Architecture, Engineering and Construction	$	880.9	$	949.1	$	872.6
Manufacturing	625.8		724.6		675.6
AutoCAD and AutoCAD LT (2)	326.7		594.8		695.1
Media and Entertainment	138.9		160.0		167.3
Other (2)	58.7		75.6		101.6
	$	2,031.0	$	2,504.1	$	2,512.2

__________________


(1)	Revenue by geographic area is based on the bill to country.


(2)	Prior periods have been adjusted to conform with current period's presentation.

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

Information regarding Autodesk’s long-lived assets by geographic area is as follows:



	January 31,
	2017		2016
Long-lived assets (1):
Americas
U.S.	$	118.8	$	118.8
Other Americas	5.9		3.2
Total Americas	124.7		122.0
Europe, Middle East, and Africa	18.7		25.7
Asia Pacific	15.2		21.6
Total long-lived assets	$	158.6	$	169.3

____________________


(1)	Long-lived assets exclude deferred tax assets, marketable securities, goodwill, and other intangible assets.

Retirement Benefit Plans (Tables)

12 Months Ended

Jan. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Changes in Projected Benefit Obligations

The changes in the projected benefit obligations and plan assets for the plans described above were as follows:



	Fiscal year ended January 31,
	2017			2016
Beginning projected benefit obligation	$	145.2		$	144.7
Service cost	5.6			5.7
Interest cost	3.0			3.3
Actuarial loss (gain)	7.1			6.3
Benefits paid	(2.6		)	(6.5		)
Foreign currency exchange rate changes	(9.5		)	(10.1		)
Curtailments and settlements	(6.8		)	(2.2		)
Contributions by plan participants	4.4			4.0
Ending projected benefit obligation	$	146.4		$	145.2

Beginning fair value of plan assets	$	101.4		$	104.2
Actual return on plan assets	4.2			1.3
Contributions paid by employer	15.3			4.5
Contributions paid by plan participants	4.4			4.0
Benefit payments	(2.6		)	(6.5		)
Curtailments and settlements	(6.8		)	—
Foreign currency exchange rate changes	(8.5		)	(6.1		)
Ending fair value of plan assets	$	107.4		$	101.4
Funded status	$	(39.0	)	$	(43.8	)

Schedule of Amounts Recognized in Balance Sheet

The amounts recognized on the consolidated balance sheets at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016
Other long-term liabilities	$	39.0	$	43.8
Accumulated other comprehensive loss, before tax	36.9		32.2
Net amount recognized	$	75.9	$	76.0

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

Included in the aggregate data in the following tables are the amounts applicable to our defined benefit pension plans, with accumulated benefit obligations in excess of plan assets, as well as plans with projected benefit obligations in excess of plan assets. Amounts related to such plans at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	$	119.2	$	127.1
Plan Assets	98.3		101.4
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	$	146.4	$	145.2
Plan Assets	107.4		101.4

Schedule of Allocation of Plan Assets

Defined benefit pension plan assets measured at fair value on a recurring basis consisted of the following investment categories at the end of each period as follows:



	Fiscal Year Ended January 31,
	2017								2016
	Level 1		Level 2		Level 3		Total		Total
Insurance contracts	$	—	$	46.3	$	—	$	46.3	$	42.6
Other investments	—		9.4		—		9.4		—
Total assets measured at fair value	$	—	$	55.7	$	—	55.7		42.6
Cash							—		0.3
Investment Fund valued using net asset value							51.7		58.5
Total pension plan assets at fair value							$	107.4	$	101.4

Schedule of Expected Benefit Payments

Estimated benefit payments over the next 10 fiscal years are as follows:



	Pension Benefits
2018	$	4.2
2019	3.8
2020	3.5
2021	3.5
2022	3.4
2023-2027	19.1

Schedule of Net Benefit Costs

The components of net periodic pension cost for the defined benefit pension plans for fiscal 2017, 2016, and 2015 are as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Service cost for benefits earned during the period	$	5.6		$	5.7		$	4.6
Interest cost on projected benefit obligation	3.0			3.3			3.9
Expected return on plan assets	(4.2		)	(3.9		)	(4.6		)
Amortization of prior service credit	(0.3		)	(0.1		)	(0.1		)
Amortization of loss	1.5			1.4			0.6
Settlement loss	1.2			—			—
Net periodic benefit cost	$	6.8		$	6.4		$	4.4

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

The components of other comprehensive income for the defined benefit pension plans before taxes for fiscal 2017, 2016, and 2015 are as follows:



	Fiscal Year Ended January 31,
	2017			2016			2015
Prior service credit for period	$	—		$	(2.2	)	$	—
Effect of settlement	(1.1		)	—			—
Net loss (gain) for period	7.2			9.1			18.4
Amortization of prior service credit	0.3			0.1			0.1
Amortization of net loss	(1.7		)	(1.4		)	(0.6		)
Other comprehensive loss (income)	$	4.7		$	5.6		$	17.9

Schedule of Net Periodic Benefit Cost Not yet Recognized

The amounts recorded in accumulated other comprehensive loss before taxes at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017			2016
Net prior service credit	$	(3.6	)	$	(3.9	)
Net actuarial loss	40.5			36.1
Accumulated other comprehensive loss, before tax	$	36.9		$	32.2

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year

The estimated amounts that will be amortized from AOCI into net periodic benefit cost over the next fiscal year for the qualified defined benefit pension plans are as follows:



	Pension Benefits
Amortization of prior service credit	$	0.3
Amortization of the net loss	(0.3		)
Total amortization	$	—

Schedule of Assumptions Used

Weighted average actuarial assumptions used to determine costs for the plans for each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016		2015
Discount rate	3.2	%	3.2	%	3.3	%
Expected long-term rate of return on plan assets	4.3	%	3.8	%	3.9	%
Rate of compensation increase	2.2	%	2.2	%	2.2	%

Weighted average actuarial assumptions used to determine benefit obligations for the plans at the end of each period were as follows:



	Fiscal Year Ended January 31,
	2017		2016		2015
Discount rate	1.7	%	2.2	%	2.4	%
Rate of compensation increase	2.6	%	2.6	%	1.2	%

Restructuring charges and other facility exit costs, net (Tables)

12 Months Ended

Jan. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following tables set forth the restructuring charges and other facility exit costs, net during the fiscal years ended January 31, 2017 and 2016:



	Balances, January 31, 2016		Additions		Payments			Adjustments (1)			Balances, January 31, 2017
Fiscal 2017 Plan
Employee terminations costs	$	—	$	63.3	$	(62.2	)	$	—		$	1.1
Facility terminations and other exit costs			7.1		(3.2		)	(2.0		)	1.9
Other Facility Termination Costs
Facility termination costs	—		7.4		(1.8		)	(1.1		)	4.5
Fiscal 2014 Plan
Facility termination and other exit costs	1.2		—		(0.3		)	—			0.9
Fiscal 2013 Plan
Facility termination and other exit costs	0.1		—		(0.1		)	—			—
Total	$	1.3	$	77.8	$	(67.6	)	$	(3.1	)	$	8.4
Current portion (2)	$	0.8									$	6.6
Non-current portion (2)	0.5										1.8
Total	$	1.3									$	8.4

____________________


(1)	Adjustments include the impact of change in estimates, computer equipment, software, furniture, straight-line rent and leasehold improvement write-offs, and foreign currency translation.


(2)	The current and non-current portions of the reserve are recorded in the Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.



	Balances, January 31, 2015		Additions		Payments			Adjustments (1)		Balances, January 31, 2016
Fiscal 2013 Plan
Facility termination and other exit costs	$	0.2	$	—	$	(0.1	)	$	—	$	0.1
Fiscal 2014 Plan
Facility termination and other exit costs	1.4		—		(0.4		)	0.2		1.2
Total	$	1.6	$	—	$	(0.5	)	$	0.2	$	1.3
Current portion (2)	$	0.7								$	0.8
Non-current portion (2)	0.9									0.5
Total	$	1.6								$	1.3

_______________


(1)	Adjustments include the impact of foreign currency translation.


(2)	The current and non-current portions of the reserve are recorded in the Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.

Selected Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Jan. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

Summarized quarterly financial information for fiscal 2017 and 2016 is as follows:



2017	1st quarter (1)			2nd quarter			3rd quarter			4th quarter			Fiscal year
Net revenue	$	511.9		$	550.7		$	489.6		$	478.8		$	2,031.0
Gross profit	419.5			465.6			408.1			395.9			1,689.1
Loss from operations	(149.7		)	(62.9		)	(119.9		)	(167.1		)	(499.6		)
Provision for income taxes	(14.4		)	(25.2		)	(13.5		)	(5.2		)	(58.3		)
Net loss	(167.7		)	(98.2		)	(142.8		)	(173.4		)	(582.1		)
Basic net loss per share	$	(0.75	)	$	(0.44	)	$	(0.64	)	$	(0.78	)	$	(2.61	)
Diluted net loss per share	$	(0.75	)	$	(0.44	)	$	(0.64	)	$	(0.78	)	$	(2.61	)
Loss from operations includes the following items:
Stock-based compensation expense	$	51.6		$	54.3		$	56.6		$	59.3		$	221.8
Amortization of acquisition related intangibles	18.8			18.5			17.2			17.3			71.8
Restructuring charges and other facility exit costs, net	52.3			16.0			3.2			9.0			80.5

2016	1st quarter			2nd quarter (2)			3rd quarter			4th quarter			Fiscal year
Net revenue	$	646.5		$	609.5		$	599.8		$	648.3		$	2,504.1
Gross profit	554.7			516.5			508.8			553.4			2,133.4
Income (loss) from operations	21.5			4.3			(14.8		)	(9.7		)	1.3
Provision for income taxes	(2.7		)	(269.5		)	(21.3		)	(16.7		)	(310.2		)
Net income (loss)	19.1			(268.6		)	(43.8		)	(37.2		)	(330.5		)
Basic net income (loss) per share	$	0.08		$	(1.18	)	$	(0.19	)	$	(0.17	)	$	(1.46	)
Diluted net income (loss) per share	$	0.08		$	(1.18	)	$	(0.19	)	$	(0.17	)	$	(1.46	)
Income (loss) from operations includes the following items:
Stock-based compensation expense	$	50.2		$	40.7		$	50.2		$	56.1		$	197.2
Amortization of acquisition related intangibles	22.4			20.2			19.7			19.9			82.2

____________________

(1)

(2)

Business and Summary of Significant Accounting Policies - Accounts Receivable, Net (Details) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016
Accounting Policies [Abstract]
Trade accounts receivable	$ 477.5	$ 700.1
Less: Allowance for doubtful accounts	(1.5)	(7.6)
Product returns reserve	(0.2)	(1.6)
Partner programs and other obligations	(23.5)	(37.3)
Accounts receivable, net	$ 452.3	$ 653.6

Business and Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Concentration Risk [Line Items]
Maximum borrowing capacity	$ 400,000,000
Tech Data \| Sales Revenue, Net
Concentration Risk [Line Items]
Concentration risk, percentage	30.00%	25.00%	25.00%
Tech Data \| Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	20.00%	22.00%
United States
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	26.00%
Other Americas
Concentration Risk [Line Items]
Concentration risk, percentage	1.00%	1.00%
Europe, Middle East, and Africa (“EMEA”)
Concentration Risk [Line Items]
Concentration risk, percentage	80.00%	50.00%
Asia Pacific (“APAC”)
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	23.00%

Business and Summary of Significant Accounting Policies - Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Property, Plant and Equipment [Abstract]
Depreciation	$ 73.1	$ 60.6	$ 52.1
Computer hardware, at cost	206.1	202.7
Computer software, at cost	73.5	85.6
Leasehold improvements, land and buildings, at cost	206.3	202.9
Furniture and equipment, at cost	58.2	59.0
Computer software, hardware, leasehold improvements, furniture, and equipment, at cost	544.1	550.2
Less: Accumulated depreciation	(385.5)	(380.9)
Computer software, hardware, leasehold improvements, furniture, and equipment, net	$ 158.6	$ 169.3
Software and Software Development Costs
Property, Plant and Equipment [Abstract]
Useful Life	3 years
Minimum
Property, Plant and Equipment [Abstract]
Useful Life	3 years
Maximum
Property, Plant and Equipment [Abstract]
Useful Life	5 years

Business and Summary of Significant Accounting Policies - Other Intangible Assets and Related Accumulated Amortization (Details) - USD ($)
$ in Millions

12 Months Ended

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Finite-Lived Intangible Assets, Net [Abstract]

Amortization of intangible assets

$ 31.8

$ 33.2

$ 39.8

Developed technologies, at cost

583.6

571.4

Customer relationships, trade names, patents, and user lists, at cost

^[1]

375.9

371.6

Other intangible assets, at cost

^[2]

959.5

943.0

Less: Accumulated amortization

(862.0)

(796.2)

Other intangible assets, net

$ 97.5

146.8

Weighted average useful life

4 years 7 months 6 days

Customer Relationships, Trade Names, Patents, and User List

Finite-Lived Intangible Assets, Net [Abstract]

Amortization of intangible assets

$ 72.2

$ 82.6

$ 92.9

Customer Relationships, Trade Names, Patents, and User List | Minimum

Finite-Lived Intangible Assets [Line Items]

Finite-Lived Intangible Asset, Useful Life

1 year

Customer Relationships, Trade Names, Patents, and User List | Maximum

Finite-Lived Intangible Assets [Line Items]

Finite-Lived Intangible Asset, Useful Life

10 years

[1]	Included in “Other assets” in the accompanying Consolidated Balance Sheets.
[2]	Includes the effects of foreign currency translation.

Business and Summary of Significant Accounting Policies - Expected Future Amortization Expense for Purchased Technologies, Customer Relationships and Trade Names (Details) $ in Millions	Jan. 31, 2017 USD ($)
Expected Future Amortization Expense for Purcahsed Technologies, Customer Relationships and Trade Name [Abstract]
2018	$ 37.2
2019	28.9
2020	16.7
2021	8.3
2022	3.7
Thereafter	0.1
Total	$ 94.9

Business and Summary of Significant Accounting Policies - Changes In the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Accounting Policies [Abstract]
Impairment of long-lived assets	$ 0.0	$ 0.0	$ 0.0
Goodwill [Roll Forward]
Goodwill, beginning of period, gross	1,684.2	1,605.4
Less: accumulated impairment losses, beginning of the year	(149.2)	(149.2)
Additions arising from acquisitions during the year (1)	62.8	97.3
Effect of foreign currency translation, measurement period adjustments, and other (2)	(36.7)	(18.5)
Goodwill, end of period, net	$ 1,561.1	$ 1,535.0

Business and Summary of Significant Accounting Policies - Stock Based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan (ESPP) purchases	$ 221.8	$ 197.2	$ 165.6
Tax benefit	(2.6)	(1.6)	(45.2)
Stock-based compensation expense related to stock awards and ESPP purchases, net	219.2	195.6	120.4
Cost of subscription
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan (ESPP) purchases	7.0	5.7	4.3
Cost of license and other revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan (ESPP) purchases	7.1	6.1	4.6
Marketing and sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan (ESPP) purchases	94.1	85.2	72.4
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan (ESPP) purchases	81.3	70.4	56.0
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense related to stock awards and Employee Qualified Stock Purchase Plan (ESPP) purchases	$ 32.3	$ 29.8	$ 28.3

Business and Summary of Significant Accounting Policies - Assumption Used to Estimate the Fair Value of Stock-Based Awards (Details)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Performance Stock Unit
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Range of expected volatilities		27.00%	30.00%
Expected dividends	0.00%	0.00%	0.00%
Range of risk-free interest rates		0.20%	0.10%
Performance Stock Unit \| Minimum
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Range of expected volatilities	38.00%
Range of risk-free interest rates	0.60%
Performance Stock Unit \| Maximum
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Range of expected volatilities	39.00%
Range of risk-free interest rates	0.70%
Employee Qualified Stock Purchase Plan 1998 ESP Plan
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Expected dividends	0.00%	0.00%	0.00%
Employee Qualified Stock Purchase Plan 1998 ESP Plan \| Minimum
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Range of expected volatilities	30.00%	28.00%	29.00%
Range of expected lives	6 months	6 months	6 months
Range of risk-free interest rates	0.50%	0.10%	0.00%
Employee Qualified Stock Purchase Plan 1998 ESP Plan \| Maximum
Share based Compensation Arrangement by Share based Payment Award, Fair Value Assumptions, Method Used [Line Items]
Range of expected volatilities	40.00%	29.00%	33.00%
Range of expected lives	2 years	2 years	2 years
Range of risk-free interest rates	0.90%	0.70%	0.60%

Business and Summary of Significant Accounting Policies - New Accounting Standards (Details) - USD ($)
$ in Millions

12 Months Ended

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Feb. 01, 2016

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Accumulated deficit

$ (964.2)

$ (80.8)

^[1]

169.7

414.0

$ 708.6

Accounting Standards Update 2016-09 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]

^[1]

$ 578.3

$ (343.2)

240.4

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Cumulative Effect of New Accounting Principle in Period of Adoption

$ 6.9

0.5

Accounting Standards Update 2016-09 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member] | Retained Earnings

$ 0.5

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Cumulative Effect of New Accounting Principle in Period of Adoption

116.5

Accumulated deficit

$ 116.5

[1]

Financial Instruments - Cost and Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Jan. 31, 2014

Schedule of Available-for-sale Securities [Line Items]

Derivative Instruments And Hedges at Amortized Cost

$ 1,213.1

$ 1,353.0

$ 1,410.6

$ 1,853.0

2.2

1.5

^[1]

Unrealized Gain on Foreign Currency Derivatives

12.3

7.8

^[1]

Unrealized Loss on Foreign Currency Derivatives

(11.7)

(7.4)

^[1]

Amortized Cost Securities

2.8

1.9

^[1]

1,903.5

2,310.6

Unrealized Gain on Securities

17.4

11.1

Unrealized Loss on Securities

(13.6)

(11.0)

Marketable Securities, Current

1,907.3

2,310.7

Schedule of Available-for-sale Securities [Line Items]

Trading Securities, Cost

44.8

38.8

Trading Securities, Unrealized Holding Gain

2.5

0.4

Trading Securities, Unrealized Holding Loss

0.0

(1.2)

Convertible Debt Securities

47.3

38.0

Schedule of Available-for-sale Securities [Line Items]

Convertible Debt Securities, Amortized Cost

4.9

^[2]

2.5

^[3]

Convertible Debt Securities, Unrealized Gains

2.3

^[2]

2.0

^[3]

Convertible Debt Securities, Unrealized Losses

(1.6)

^[2]

(1.1)

^[3]

Schedule of Available-for-sale Securities [Line Items]

5.6

^[2]

3.4

^[3]

Level 1

0.0

^[1]

Level 1 | Marketable Securities, Current

1,193.8

1,594.4

Schedule of Available-for-sale Securities [Line Items]

Level 1 | Convertible Debt Securities

47.3

38.0

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

^[2]

0.0

^[3]

Level 2

1.5

1.6

^[1]

Level 2 | Marketable Securities, Current

706.6

712.6

Schedule of Available-for-sale Securities [Line Items]

Level 2 | Convertible Debt Securities

0.0

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

^[2]

0.0

^[3]

Level 3

1.3

0.3

^[1]

Level 3 | Marketable Securities, Current

6.9

3.7

Schedule of Available-for-sale Securities [Line Items]

Level 3 | Convertible Debt Securities

0.0

Schedule of Available-for-sale Securities [Line Items]

Agency bonds | Marketable Securities, Current

5.6

^[2]

3.4

^[3]

Schedule of Available-for-sale Securities [Line Items]

13.2

40.0

0.0

(0.1)

Agency bonds | Marketable Securities, Noncurrent

13.2

39.9

Schedule of Available-for-sale Securities [Line Items]

7.1

56.8

0.0

0.1

0.0

Agency bonds | Level 1 | Marketable Securities, Current

7.1

56.9

Schedule of Available-for-sale Securities [Line Items]

Agency bonds | Level 1 | Marketable Securities, Noncurrent

13.2

39.9

Schedule of Available-for-sale Securities [Line Items]

Agency bonds | Level 2 | Marketable Securities, Current

7.1

56.9

Schedule of Available-for-sale Securities [Line Items]

Agency bonds | Level 2 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Agency bonds | Level 3 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Agency bonds | Level 3 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Asset backed securities | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

19.6

7.3

0.0

0.0

Asset backed securities | Marketable Securities, Noncurrent

19.6

7.3

Schedule of Available-for-sale Securities [Line Items]

65.8

36.5

0.1

0.0

Asset backed securities | Level 1 | Marketable Securities, Current

65.9

36.6

Schedule of Available-for-sale Securities [Line Items]

Asset backed securities | Level 1 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Asset backed securities | Level 2 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Asset backed securities | Level 2 | Marketable Securities, Noncurrent

19.6

7.3

Schedule of Available-for-sale Securities [Line Items]

Asset backed securities | Level 3 | Marketable Securities, Current

65.9

36.6

Schedule of Available-for-sale Securities [Line Items]

Asset backed securities | Level 3 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Certificates of deposit | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

157.3

190.3

0.0

0.0

Certificates of deposit | Level 1 | Marketable Securities, Current

157.3

190.3

Schedule of Available-for-sale Securities [Line Items]

Certificates of deposit | Level 2 | Marketable Securities, Current

157.3

190.3

Schedule of Available-for-sale Securities [Line Items]

Certificates of deposit | Level 3 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Commercial paper | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

109.2

141.1

0.0

0.0

Commercial paper | Level 1 | Marketable Securities, Current

109.2

141.1

Schedule of Available-for-sale Securities [Line Items]

Commercial paper | Level 2 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Commercial paper | Level 3 | Marketable Securities, Current

109.2

141.1

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

234.7

377.1

0.0

0.1

(0.2)

(0.3)

Corporate debt securities | Marketable Securities, Noncurrent

234.5

376.9

Schedule of Available-for-sale Securities [Line Items]

172.1

320.9

0.1

0.3

(0.1)

(0.8)

Corporate debt securities | Level 1 | Marketable Securities, Current

172.1

320.4

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 1 | Marketable Securities, Noncurrent

234.5

376.9

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 2 | Marketable Securities, Current

172.1

320.4

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 2 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 3 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 3 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

43.4

9.7

0.0

0.0

Municipal bonds | Marketable Securities, Noncurrent

43.4

9.7

Schedule of Available-for-sale Securities [Line Items]

10.7

2.9

0.0

0.0

Municipal bonds | Level 1 | Marketable Securities, Current

10.7

2.9

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 1 | Marketable Securities, Noncurrent

43.4

9.7

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 2 | Marketable Securities, Current

10.7

2.9

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 2 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 3 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 3 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Sovereign debt | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

30.0

20.1

0.0

0.0

Sovereign debt | Marketable Securities, Noncurrent

30.0

20.1

Schedule of Available-for-sale Securities [Line Items]

1.5

16.9

0.0

0.0

Sovereign debt | Level 1 | Marketable Securities, Current

1.5

16.9

Schedule of Available-for-sale Securities [Line Items]

Sovereign debt | Level 1 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Sovereign debt | Level 2 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

Sovereign debt | Level 2 | Marketable Securities, Noncurrent

30.0

20.1

Schedule of Available-for-sale Securities [Line Items]

Sovereign debt | Level 3 | Marketable Securities, Current

1.5

16.9

Schedule of Available-for-sale Securities [Line Items]

Sovereign debt | Level 3 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

32.3

74.6

0.0

0.0

U.S. government securities | Marketable Securities, Noncurrent

32.3

74.6

Schedule of Available-for-sale Securities [Line Items]

48.8

98.4

0.1

0.3

0.0

(0.1)

U.S. government securities | Level 1 | Marketable Securities, Current

48.9

98.6

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 1 | Marketable Securities, Noncurrent

32.3

74.6

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 2 | Marketable Securities, Current

48.9

98.6

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 2 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 3 | Marketable Securities, Current

0.0

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 3 | Marketable Securities, Noncurrent

0.0

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

Agency bonds

^[4]

6.0

8.5

Schedule of Available-for-sale Securities [Line Items]

^[4]

6.0

8.5

Agency bonds | Level 1

Schedule of Available-for-sale Securities [Line Items]

^[4]

6.0

8.5

Agency bonds | Level 2

Schedule of Available-for-sale Securities [Line Items]

^[4]

0.0

Agency bonds | Level 3

Schedule of Available-for-sale Securities [Line Items]

^[4]

0.0

Certificates of deposit

63.1

^[4]

267.6

^[5]

Certificates of deposit | Level 1

63.1

^[4]

267.6

^[5]

Schedule of Available-for-sale Securities [Line Items]

Certificates of deposit | Level 2

63.1

^[4]

267.6

^[5]

Schedule of Available-for-sale Securities [Line Items]

Certificates of deposit | Level 3

0.0

^[4]

0.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

^[4]

0.0

Commercial paper

207.4

^[4]

106.6

^[5]

Commercial paper | Level 1

207.4

^[4]

106.6

^[5]

Schedule of Available-for-sale Securities [Line Items]

Commercial paper | Level 2

0.0

^[4]

0.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Commercial paper | Level 3

207.4

^[4]

106.6

^[5]

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities

0.0

^[4]

0.0

Schedule of Available-for-sale Securities [Line Items]

^[4]

40.2

Corporate debt securities | Level 1

^[4]

40.2

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 2

^[4]

40.2

Schedule of Available-for-sale Securities [Line Items]

Corporate debt securities | Level 3

^[4]

0.0

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

^[4]

0.0

Custody cash deposit

3.2

^[4]

2.1

^[5]

Custody cash deposit | Level 1

3.2

^[4]

2.1

^[5]

Schedule of Available-for-sale Securities [Line Items]

Custody cash deposit | Level 2

3.2

^[4]

2.1

^[5]

Schedule of Available-for-sale Securities [Line Items]

Custody cash deposit | Level 3

0.0

^[4]

0.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

^[4]

0.0

Money market funds

256.5

^[4]

382.4

^[5]

Money market funds | Level 1

256.5

^[4]

382.4

^[5]

Schedule of Available-for-sale Securities [Line Items]

Money market funds | Level 2

0.0

^[4]

0.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Money market funds | Level 3

256.5

^[4]

382.4

^[5]

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

^[4]

0.0

Municipal bonds

5.0

^[4]

5.0

^[5]

Municipal bonds | Level 1

5.0

^[4]

5.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 2

5.0

^[4]

5.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Municipal bonds | Level 3

0.0

^[4]

0.0

^[5]

Schedule of Available-for-sale Securities [Line Items]

Schedule of Available-for-sale Securities [Line Items]

0.0

^[4]

0.0

Sovereign debt

^[4]

15.0

Schedule of Available-for-sale Securities [Line Items]

^[4]

15.0

Sovereign debt | Level 1

Schedule of Available-for-sale Securities [Line Items]

^[4]

0.0

Sovereign debt | Level 2

Schedule of Available-for-sale Securities [Line Items]

^[4]

15.0

Sovereign debt | Level 3

U.S. government securities

^[4]

0.0

Schedule of Available-for-sale Securities [Line Items]

^[4]

309.5

103.0

U.S. government securities | Level 1

^[4]

309.5

103.0

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 2

^[4]

309.5

103.0

Schedule of Available-for-sale Securities [Line Items]

U.S. government securities | Level 3

^[4]

0.0

Schedule of Available-for-sale Securities [Line Items]

^[4]

$ 0.0

[1]	Included in “Prepaid expenses and other current assets,” "Other assets," or “Other accrued liabilities” in the accompanying Consolidated Balance Sheets.
[2]	Considered "available for sale" and included in "Other assets" in the accompanying Consolidated Balance Sheets.
[3]	Considered "available for sale" securities and included in "Other assets" in the accompanying Consolidated Balance Sheets.
[4]	Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.
[5]	Included in “Cash and cash equivalents” in the accompanying Consolidated Balance Sheets.

Financial Instruments - Reconciliation of the Change in Level 3 Items (Details) $ in Millions	12 Months Ended
	Jan. 31, 2017 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 3.7
Purchases	5.1
Settlements	(2.4)
Gains (losses) included in earnings	0.7
Gains included in OCI	(0.2)
Ending Balance	6.9
Derivative Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0.3
Purchases	1.1
Settlements	(0.7)
Gains (losses) included in earnings	0.6
Gains included in OCI	0.0
Ending Balance	1.3
Convertible Debt Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	3.4
Purchases	4.0
Settlements	(1.7)
Gains (losses) included in earnings	0.1
Gains included in OCI	(0.2)
Ending Balance	$ 5.6

Financial Instruments - Contractual Maturities of Types of Securities (Details) $ in Millions	Jan. 31, 2017 USD ($)
Cost
Due within in 1 year	$ 635.6
Due in 1 year through 5 years	305.4
Due in 5 years through 10 years	2.6
Due after 10 years	7.0
Total	950.6
Fair Value
Due within in 1 year	635.9
Due in 1 year through 5 years	305.8
Due in 5 years through 10 years	2.6
Due after 10 years	7.0
Total	$ 951.3

Financial Instruments - Available for Sale Securities (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Derivative [Line Items]
Cost Method Investments	$ 117.2	$ 104.3
Other than Temporary Impairment Losses, Investments	1.3	0.2
Available-for-sale securities gross gains (losses)	1.5	0.1	$ 0.7
Proceeds from Sale and Maturity of Marketable Securities	$ 2,300.0	$ 1,700.0

Financial Instruments - Fair Value of Derivative Instruments (Detail) - USD ($)
$ in Millions

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Jan. 31, 2014

Notional amount of foreign currency forward contracts not designated as cash flow hedges

$ 369.4

$ 142.4

Net loss expected to be recognized into earnings

733.6

1,619.6

$ 2,219.2

$ 2,261.5

Derivative asset, net

13.3

8.3

Derivative liability, net

10.5

6.4

Net Unrealized Gains (Losses) on Derivative Instruments

Net loss expected to be recognized into earnings

14.6

15.7

$ 42.8

Foreign Exchange Contracts

Notional amount of foreign currency forward contracts not designated as cash flow hedges

270.6

231.6

Designated as Hedging Instrument | Foreign Exchange Contracts | Prepaid expenses and other current assets

Designated as Hedging Instrument | Foreign Exchange Contracts | Other Accrued Liabilities

Derivative asset, net

10.1

3.4

Derivative liability, net

^[1]

4.5

3.4

Not Designated as Hedging Instrument | Other assets

Not Designated as Hedging Instrument | Other Accrued Liabilities

Derivative asset, net

3.2

4.9

Derivative liability, net

$ 6.0

^[1]

$ 3.0

[1]

Balance Sheet Location Fair Value at January 31, 2017 January 31, 2016Derivative Assets Foreign currency contracts designated as cash flow hedgesPrepaid expenses and other current assets $10.1 $3.4Derivatives not designated as hedging instrumentsPrepaid expenses and other current assets and Other assets 3.2 4.9Total derivative assets $13.3 $8.3Derivative Liabilities Foreign currency contracts designated as cash flow hedgesOther accrued liabilities $4.5 $3.4Derivatives not designated as hedging instrumentOther accrued liabilities 6.0 3.0Total derivative liabilities $10.5 $6.4

Financial Instruments - Effects of Derivative Instruments on Condensed Consolidated Statements of Operations (Detail) - Foreign Exchange Contracts - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain recognized in accumulated other comprehensive income on derivatives (effective portion)	$ 6.3	$ 2.2	$ 46.4
Amount and location of gain reclassified from accumulated other comprehensive income into income (effective portion)	7.4	29.3	7.0
Designated as Hedging Instrument \| Net revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of gain reclassified from accumulated other comprehensive income into income (effective portion)	9.2	39.8	10.5
Designated as Hedging Instrument \| Operating expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of gain reclassified from accumulated other comprehensive income into income (effective portion)	(1.8)	(10.5)	(3.5)
Designated as Hedging Instrument \| Interest and other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of (loss) gain recognized in income on derivatives (ineffective portion and amount excluded from effectiveness testing)	(0.3)	(0.7)	0.9
Not Designated as Hedging Instrument \| Interest and other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount and location of (loss) gain recognized in income on derivatives	$ (11.1)	$ (1.7)	$ (25.5)

Employee and Director Stock Plans - Stock-Based Compensation Expense - Additional Information (Detail) $ / shares in Units, $ in Millions		12 Months Ended
	Jun. 10, 2015 shares	Jan. 31, 2017 USD ($) period Plan $ / shares shares	Jan. 31, 2016 USD ($) $ / shares shares	Jan. 31, 2015 USD ($) $ / shares shares
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Number of Active Stock Plans \| Plan		2
Number of Expired Plans \| Plan		2
Number of additional share authorized (in shares)	12,500,000
Shares available for future issuance (in shares)		58,900,000
Share based compensation expense, restricted stock units \| $				$ 0.0
Shares available for future issuance, increases on the first trading day of each fiscal year (In shares)		5,000,000
Shares available for future issuance, percentage of outstanding shares plus any shares repurchased by Autodesk (as a percent)		2.00%
Employee Stock Plan 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Shares of common stock reserved for issuance (in shares)		45,100,000
Restricted stock award, net of forfeitures (in shares)		39,100,000
Shares forfeited (in shares)		6,000,000
Shares granted to shares issued (in shares)		1.79
Shares available for future issuance (in shares)		12,400,000
Vesting period		3 years
Directors stock plan 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Number of additional share authorized (in shares)		900,000
Shares of common stock reserved for issuance (in shares)		1,700,000
Shares granted to shares issued (in shares)		2.11
Shares available for future issuance (in shares)		900,000
Outside directors stock plan 2012 \| Minimum
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Vesting period		1 year
Outside directors stock plan 2012 \| Maximum
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Vesting period		3 years
ESP Plan
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Shares available for future issuance (in shares)		45,600,000
Percentage of compensation that eligible employees can use to purchase common stock, maximum		15.00%
Percentage of fair market value eligible employees can purchase common stock, minimum		85.00%
Number of exercise periods \| period		4
Term of exercise period		6 months
Term of offering period		24 months
Shares issued under the ESP plan (in dollars per share)		2,300,000	2,100,000	2,100,000
Shares issued under the ESP Plan, average price (in dollars per share) \| $ / shares		$ 36.99	$ 36.29	$ 33.91
Weighted average grant date fair value (in dollars per share) \| $ / shares		$ 19.20	$ 11.85	$ 15.14
Employee Service Share Based Compensation recognized Compensation Costs On Nonvested Restricted Shares \| $		$ 25.9	$ 27.1	$ 23.9
Stock Options and Restricted Stock \| Employee Stock Plan 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Grants in period, net of forfeitures (in shares)		36,700,000
Share based payment award options expiration term (in years)		10 years
Restricted Stock Units (RSUs) and Performance Stock Units (PSUs)
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Granted (in dollars per share) \| $ / shares		$ 65.95	$ 52.53	$ 54.17
Fair value of units vested in period \| $		$ 232.2	$ 193.3	$ 147.8
Restricted stock granted (in shares)		4,226,300
Number of awards granted but unreleased		7,622,400	7,739,600
Restricted Stock Units (RSUs)
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Restricted stock granted (in shares)		3,800,000
Share based compensation expense, restricted stock units \| $		$ 173.0	$ 146.4	118.9
Total compensation cost related to non-vested awards not yet recognized \| $		$ 309.8
Total compensation cost related to non-vested awards not yet recognized, weighted average period of recognition (in years)		1 year 9 months 18 days
Number of awards granted but unreleased		6,800,000
Restricted Stock Units (RSUs) \| Maximum
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Vesting period		3 years
Restricted Stock Units (RSUs) \| Directors stock plan 2012
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Grants in period, net of forfeitures (in shares)		800,000
Performance Stock Units (PSUs)
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Restricted stock granted (in shares)		400,000
Share based compensation expense, restricted stock units \| $		$ 22.9	$ 23.2	$ 17.5
Total compensation cost related to non-vested awards not yet recognized \| $		$ 3.2
Total compensation cost related to non-vested awards not yet recognized, weighted average period of recognition (in years)		9 months 18 days
Number of awards granted but unreleased		800,000
Performance Stock Units (PSUs) \| Year One
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Vesting percentage (up to percentage)		33.33%
Performance Stock Units (PSUs) \| Year Two
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Vesting percentage (up to percentage)		33.33%
Performance Stock Units (PSUs) \| Year Three
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Vesting percentage (up to percentage)		33.33%

Employee and Director Stock Plans - Schedule Of Share-based Compensation Options Activity (Detail)
$ / shares in Units, shares in Millions, $ in Millions

12 Months Ended

Jan. 31, 2017

USD ($)

$ / shares

Number of Shares

Options outstanding (in shares) | shares

1.6

Exercised (in shares) | shares

(1.0)

Options outstanding (in shares) | shares

0.6

Options available for grant (in shares) | shares

13.3

Weighted average price per share

Options outstanding, beginning balance (per share) | $ / shares

$ 37.06

Exercised (per share) | $ / shares

35.85

Options outstanding, ending balance (per share) | $ / shares

$ 39.25

Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]

Options outstanding, Weighted average contractual term

3 years 1 month 20 days

Options outstanding, Aggregate Intrinsic Value | $

$ 25.8

^[1]

Closing stock price (in dollars per share) | $ / shares

$ 81.34

[1]	presents the total pre-tax intrinsic value, based on Autodesk’s closing stock price of $81.34 per share as of January 31, 2017, which would have been received by the option holders had all option holders exercised their options as of that date.

Employee and Director Stock Plans - Options Outstanding and Exercisable (Detail) shares in Millions	Jan. 31, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Vested and Exercisable, Number of Shares \| shares	0.6
Options Vested and Exercisable, Weighted average exercise price (in dollars per share)	$ 39.25
$27.40 - $38.55
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per-share exercise prices, Lower Limit	27.40
Range of per-share exercise prices, Upper Limit	$ 38.55
Options Vested and Exercisable, Number of Shares \| shares	0.2
Options Vested and Exercisable, Weighted average exercise price (in dollars per share)	$ 33.00
$38.56 - $42.38
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per-share exercise prices, Lower Limit	38.56
Range of per-share exercise prices, Upper Limit	$ 42.38
Options Vested and Exercisable, Number of Shares \| shares	0.3
Options Vested and Exercisable, Weighted average exercise price (in dollars per share)	$ 41.62
$42.39 - $43.81
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of per-share exercise prices, Lower Limit	42.39
Range of per-share exercise prices, Upper Limit	$ 43.81
Options Vested and Exercisable, Number of Shares \| shares	0.1
Options Vested and Exercisable, Weighted average exercise price (in dollars per share)	$ 43.81

Employee and Director Stock Plans - Summary of Restricted Stock Award and Restricted Stock Unit Activity (Detail) - Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) - $ / shares

12 Months Ended

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Unreleased restricted stock

Unvested restricted stock units at January 31, 2016 (in shares)

7,739,600

Granted (in shares)

4,226,300

Vested (in shares)

(3,585,000)

Canceled/Forfeited (in shares)

(725,200)

Performance adjustment (in shares)

^[1]

(33,300)

Unvested restricted stock at January 31, 2017 (in shares)

7,622,400

7,739,600

Weighted average grant date fair value

Beginning balance of unvested restricted stock units (in dollars per share)

$ 51.80

Granted (in dollars per share)

65.95

$ 52.53

$ 54.17

Vested (in dollars per share)

52.12

Canceled/Forfeited (in dollars per share)

53.25

Performance adjustment (in dollars per share)

^[1]

63.74

Ending balance of unvested restricted stock (in dollars per share)

$ 60.13

$ 51.80

Percentage of the target award, minimum

86.10%

Percentage of the target award, maximum

98.00%

[1]	Based on Autodesk's financial results and relative total stockholder return for the fiscal 2016 performance period. The performance stock units were attained at rates ranging from 86.1% to 98.0% of the target award.

Employee and Director Stock Plans - Options Outstanding (Details) - $ / shares
shares in Millions

Jan. 31, 2017

Jan. 31, 2016

Number of securities to be issued upon exercise of outstanding options (in shares)

8.2

Weighted Average Exercise Price (per share)

$ 39.25

$ 37.06

Shares available for future issuance (in shares)

58.9

Equity Compensation Plans Approved by Security Holders

Number of securities to be issued upon exercise of outstanding options (in shares)

8.2

Weighted Average Exercise Price (per share)

$ 39.25

Shares available for future issuance (in shares)

^[1]

58.9

ESP Plan

Shares available for future issuance (in shares)

45.6

[1]	cluded in this amount are 45.6 million securities available for future issuance under Autodesk’s ESPP.

Income Taxes - Provision for income taxes (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Jan. 31, 2017

Oct. 31, 2016

Jul. 31, 2016

^[1]

Apr. 30, 2016

Jan. 31, 2016

Oct. 31, 2015

Jul. 31, 2015

Apr. 30, 2015

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Federal:

Current

$ 1.6

$ (4.7)

$ (43.8)

Deferred

8.4

220.9

(11.9)

State:

Current

(1.9)

0.5

(13.2)

Deferred

1.3

20.9

9.0

Foreign:

Current

93.9

68.4

69.5

Deferred

(45.0)

4.2

(8.4)

Income tax expense

$ 5.2

$ 13.5

$ 25.2

$ 14.4

$ 16.7

$ 21.3

$ 269.5

$ 2.7

$ 58.3

$ 310.2

$ 1.2

[1]

Income Taxes - Income Taxes Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Income Taxes [Line Items]
Foreign pretax income (loss)	$ (27.6)	$ 218.2	$ 302.5
Valuation allowance	352.4	327.2	3.6
Deferred income taxes, net	63.9	9.2
Gross unrecognized tax benefits	261.4	254.3	245.8	$ 222.1
Amount of gross unrecognized tax benefits that would impact the effective tax rate, if recognized	247.3
Unrecognized tax benefits	2.5	3.3	2.0
Income tax expense from penalties and interest	1.5	1.3
Income benefit from penalties and interest			(0.8)
Cumulative earnings from Foreign subsidiaries for which income taxes have not been provided	1,738.9
Unrecognized deferred tax liability for earnings of foreign subsidiaries	435.1
Foreign income tax expense (benefit)	$ (27.1)	$ 0.0	$ (1.2)
Income tax benefits per share	$ 0.12		$ 0.01
Domestic Country
Income Taxes [Line Items]
Operating loss carryforwards	$ 575.0
Domestic Country \| Research Tax Credit Carryforward
Income Taxes [Line Items]
Tax credit carryforward	127.1
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carryforwards	526.8
State and Local Jurisdiction \| Research Tax Credit Carryforward
Income Taxes [Line Items]
Tax credit carryforward	66.8
Foreign Country
Income Taxes [Line Items]
Deferred income taxes, net	49.7
Tax credit carryforward	211.5
Foreign Country \| Canada
Income Taxes [Line Items]
Tax credit carryforward	$ 54.6

Income Taxes - Income Taxes Differences between the U.S. statutory rate and the aggregate income tax provision (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Jan. 31, 2017

Oct. 31, 2016

Jul. 31, 2016

^[1]

Apr. 30, 2016

Jan. 31, 2016

Oct. 31, 2015

Jul. 31, 2015

Apr. 30, 2015

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Income Tax Disclosure [Abstract]

Income tax provision (benefit) at U.S. Federal statutory rate

$ (177.0)

$ (7.1)

$ 29.0

State income tax benefit, net of the U.S. Federal benefit

(17.3)

(7.6)

(4.0)

Foreign income taxed at rates different from the U.S. statutory rate

22.3

(29.4)

(40.0)

U.S. valuation allowance

233.0

345.0

2.9

Increase in attributes due to ASU 2016-9 adoption

(119.4)

0.0

Change in valuation allowance from ASU 2016-9 adoption

119.4

0.0

Tax effect of non-deductible stock-based compensation

18.8

19.3

15.7

Stock compensation windfall shortfall

(23.0)

0.0

Research and development tax credit benefit

(10.3)

(9.4)

(7.2)

Closure of income tax audits and changes in uncertain tax positions

8.2

(4.7)

(0.7)

Tax effect of officer compensation in excess of $1.0 million

2.2

1.4

2.4

Non-deductible expenses

2.0

2.6

2.2

Other

(0.6)

0.1

0.9

Income tax expense

$ 5.2

$ 13.5

$ 25.2

$ 14.4

$ 16.7

$ 21.3

$ 269.5

$ 2.7

$ 58.3

$ 310.2

$ 1.2

[1]

Income Taxes - Income Taxes Components Of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Stock-based compensation	$ 37.6	$ 37.5
Research and development tax credit carryforwards	136.7	91.3
Foreign tax credit carryforwards	127.3	51.1
Accrued compensation and benefits	39.5	41.5
Other accruals not currently deductible for tax	18.7	23.6
Purchased technology and capitalized software	76.9	64.3
Fixed assets	24.3	18.6
Tax loss carryforwards	173.6	17.6
Deferred Revenue	128.3	56.7
Other	27.6	13.9
Total deferred tax assets	790.5	416.1
Less: valuation allowance	(748.0)	(398.0)
Net deferred tax assets	42.5	18.1
Indefinite lived intangibles	(70.1)	(54.1)
Unremitted earnings of foreign subsidiaries	0.0	(22.4)
Total deferred tax liabilities	(70.1)	(76.5)
Net deferred tax liabilities	$ (27.6)	$ (58.4)

Income Taxes - Income Taxes Unrecognized Tax Benefits Reconciliation, Table (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross unrecognized tax benefits at the beginning of the fiscal year	$ 254.3	$ 245.8	$ 222.1
Increases for tax positions of prior years	11.9	1.4	3.2
Decreases for tax positions of prior years	(4.1)	(7.0)	(2.5)
Increases for tax positions related to the current year	11.1	15.8	33.2
Decreases relating to settlements with taxing authorities	(10.8)	(0.5)	(5.4)
Reductions as a result of lapse of the statute of limitations	(1.0)	(1.2)	(4.8)
Gross unrecognized tax benefits at the end of the fiscal year	$ 261.4	$ 254.3	$ 245.8

Acquisitions - Summary of Fair Value of Assets Acquired and Liabilities Assumed by Major Class (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Business Acquisition [Line Items]
Goodwill	$ 1,561.1	$ 1,535.0
Increase (decrease) in deferred tax liabilities	38.8	(235.9)	$ 18.8
Other
Business Acquisition [Line Items]
Goodwill	62.8	63.7
Deferred revenue (current and non-current)	(2.1)	(0.7)
Deferred tax liability	(7.1)	(1.6)
Net tangible (liabilities) assets	0.6	0.5
Total	87.0	106.8
Other \| Developed technologies
Business Acquisition [Line Items]
Intangible assets	18.8	27.3
Other \| Customer Relationships And Other Noncurrent Intangible Assets
Business Acquisition [Line Items]
Intangible assets	10.2	12.9
Other \| Trade name
Business Acquisition [Line Items]
Intangible assets	3.8	4.7
netfabb
Business Acquisition [Line Items]
Goodwill		36.1
Deferred revenue (current and non-current)		(1.0)
Deferred tax liability		(3.9)
Net tangible (liabilities) assets		(2.9)
Total		42.5
netfabb \| Developed technologies
Business Acquisition [Line Items]
Intangible assets		6.6
netfabb \| Customer Relationships And Other Noncurrent Intangible Assets
Business Acquisition [Line Items]
Intangible assets		6.2
netfabb \| Trade name
Business Acquisition [Line Items]
Intangible assets		$ 1.4
Measurement Period Adjustment 1
Business Acquisition [Line Items]
Goodwill, period increase (decrease)	3.3
Increase (decrease) in tangible liabilities	3.3
Measurement Period Adjustment 2
Business Acquisition [Line Items]
Goodwill, period increase (decrease)	(0.8)
Increase (decrease) in deferred tax liabilities	$ (0.8)

Acquisitions - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 12, 2015	Jan. 31, 2017	Jan. 31, 2016
Business Acquisition [Line Items]
Cost Method Investments		$ 117.2	$ 104.3
Goodwill		1,561.1	1,535.0
netfabb
Business Acquisition [Line Items]
Payments to acquire business	$ 42.5
Goodwill			36.1
Cash consideration transferred for acqusitions and business combinations			42.5
Delcam plc
Business Acquisition [Line Items]
Goodwill		29.8
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Payments to acquire business		87.0
Goodwill		62.8	63.7
Cash consideration transferred for acqusitions and business combinations		$ 87.0	$ 106.8
FIT AG
Business Acquisition [Line Items]
Cost Method Investments	$ 27.4

Deferred Compensation - Additional Information (Detail) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Marketable securities	$ 993.0
Rabbi Trust
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation liability current	3.1	$ 1.9
Deferred compensation liability non-current	44.2	36.1
Marketable Securities, Current
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Trading securities	47.3	38.0
Marketable Securities, Current \| Rabbi Trust
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Trading securities	$ 47.3	$ 38.0

Borrowing Arrangements (Detail) - USD ($)	1 Months Ended		12 Months Ended
Borrowing Arrangements (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2012	Jan. 31, 2017	Jan. 31, 2016
Debt Disclosure [Line Items]
Unsecured revolving credit facility			$ 400,000,000
Unsecured revolving credit facility, option to request an increase in the amount of the credit facility up to			$ 100,000,000.0
Line of credit facility, expiration			May 31, 2020
Line of credit facility, outstanding borrowings			$ 0	$ 0
Senior Notes \| Senior Notes due 2020
Debt Disclosure [Line Items]
Face amount	$ 450,000,000
Stated interest rate	3.125%
Maturity date	Jun. 15, 2020
Senior Notes \| Senior Notes due 2025
Debt Disclosure [Line Items]
Face amount	$ 300,000,000
Stated interest rate	4.375%
Maturity date	Jun. 15, 2025
Senior Notes \| 2015 Senior Notes
Debt Disclosure [Line Items]
Proceeds from debt, net of issuance costs	$ 742,000,000
Unamortized discount	1,700,000
Debt issuance costs	$ 6,300,000
Debt redemption percentage of principle amount (as a percent)	101.00%
Fair value disclosure			768,100,000
Senior Notes \| Senior Notes due 2017
Debt Disclosure [Line Items]
Face amount		$ 400,000,000
Stated interest rate		1.95%
Maturity date		Dec. 15, 2017
Senior Notes \| Senior Notes due 2022
Debt Disclosure [Line Items]
Face amount		$ 350,000,000
Stated interest rate		3.60%
Maturity date		Dec. 15, 2022
Senior Notes \| 2012 Senior Notes
Debt Disclosure [Line Items]
Proceeds from debt, net of issuance costs		$ 739,300,000
Unamortized discount		4,500,000
Debt issuance costs		$ 6,100,000
Debt redemption percentage of principle amount (as a percent)		101.00%
Fair value disclosure			$ 758,600,000

Commitments and Contingencies - Future Minimum Lease Payments (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Future Minimum Lease Payments [Abstract]
2018	$ 60.7
2019	48.4
2020	31.4
2021	21.1
2022	12.2
Thereafter	41.2
Future minimum lease payments required	215.0
Less: Sublease income	2.5
Future minimum lease payments required, net	212.5
Rent expense	$ 65.3	$ 58.7	$ 55.0

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Total non cancellable purchase commitments	$ 166.4
Royalty expense recorded under cost of license and other revenue	$ 16.2	$ 17.4	$ 17.9

Stockholders' Equity (Details) - $ / shares	12 Months Ended
Stockholders' Equity (Details) - $ / shares	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015	Sep. 30, 2016
Stockholders Equity Note [Line Items]
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000.0
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common Stock Repurchase Program
Stockholders Equity Note [Line Items]
Repurchase and retirement of common shares (in shares)	9,700,000	8,500,000	6,900,000
Average repurchase price per share (usd per share)	$ 64.73	$ 53.58	$ 53.83
Common Stock shares remained available for repurchase under repurchase plans (in shares)	26,600,000
Additional shares authorized for repurchase (in shares)				30,000,000

Interest and Other Expense, net (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Interest and Other Income, net [Abstract]
Interest and investment expense, net	$ (29.7)	$ (33.9)	$ (13.2)
Loss on foreign currency	(3.3)	0.0	(3.9)
Gain (loss) on strategic investments	0.3	3.8	(23.3)
Other income	8.5	8.5	2.7
Interest and other expense, net	$ (24.2)	$ (21.6)	$ (37.7)

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,619.6	$ 2,219.2	$ 2,261.5
Total other comprehensive loss	(57.4)	(67.8)	(52.7)
Ending Balance	733.6	1,619.6	2,219.2
Accumulated other comprehensive (loss) income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(121.1)	(53.3)	(0.6)
Other comprehensive income (loss) before reclassifications	(47.4)	(41.7)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(7.7)	(28.1)
Tax effects	(2.3)	2.0
Total other comprehensive loss	(57.4)	(67.8)
Ending Balance	(178.5)	(121.1)	(53.3)
Net Unrealized Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	15.7	42.8
Other comprehensive income (loss) before reclassifications	7.4	1.6
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(7.4)	(29.3)
Tax effects	(1.1)	0.6
Total other comprehensive loss	(1.1)	(27.1)
Ending Balance	14.6	15.7	42.8
Net Unrealized Gains (Losses) on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0.2	1.6
Other comprehensive income (loss) before reclassifications	3.3	(1.3)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	(1.5)	(0.1)
Tax effects	(0.5)	0.0
Total other comprehensive loss	1.3	(1.4)
Ending Balance	1.5	0.2	1.6
Defined Benefit Pension Components
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(28.3)	(23.7)
Other comprehensive income (loss) before reclassifications	(5.8)	(6.8)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	1.2	1.3
Tax effects	(0.9)	0.9
Total other comprehensive loss	(5.5)	(4.6)
Ending Balance	(33.8)	(28.3)	(23.7)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(108.7)	(74.0)
Other comprehensive income (loss) before reclassifications	(52.3)	(35.2)
Pre-tax (gains) losses reclassified from accumulated other comprehensive income	0.0	0.0
Tax effects	0.2	0.5
Total other comprehensive loss	(52.1)	(34.7)
Ending Balance	$ (160.8)	$ (108.7)	$ (74.0)

Net (Loss) Income Per Share - Computation of Net Income Per Share Amounts (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions

3 Months Ended

12 Months Ended

Jan. 31, 2017

Oct. 31, 2016

Jul. 31, 2016

^[1]

Apr. 30, 2016

Jan. 31, 2016

Oct. 31, 2015

Jul. 31, 2015

Apr. 30, 2015

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

Numerator:

Net (loss) income

$ (173.4)

$ (142.8)

$ (98.2)

$ (167.7)

$ (37.2)

$ (43.8)

$ (268.6)

$ 19.1

$ (582.1)

$ (330.5)

$ 81.8

Denominator:

Denominator for basic net (loss) income per share—weighted average shares

222.7

226.0

227.1

Effect of dilutive securities

0.0

^[2]

0.0

5.3

Denominator for dilutive net (loss) income per share

222.7

226.0

232.4

Basic net (loss) income per share (usd per share)

$ (0.78)

$ (0.64)

$ (0.44)

$ (0.75)

$ (0.17)

$ (0.19)

$ (1.18)

$ 0.08

$ (2.61)

$ (1.46)

$ 0.36

Diluted net (loss) income per share (usd per share)

$ (0.78)

$ (0.64)

$ (0.44)

$ (0.75)

$ (0.17)

$ (0.19)

$ (1.18)

$ 0.08

$ (2.61)

$ (1.46)

$ 0.35

[1]

[2]

(1)The effect of dilutive securities of 4.6 million and 4.7 million shares for the fiscal year ended January 31, 2017 and 2016, respectively, have been excluded from the calculation of diluted net (loss) income per share as those shares would have been anti-dilutive due to the net loss incurred during these fiscal years.

Net (Loss) Income Per Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares excluded from the computation of diluted net income per share (in shares)	4.6	4.7
Treasury Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares excluded from the computation of diluted net income per share (in shares)	0.1	0.1	0.1

Segments - Operations by geographic area (Details) - USD ($)
$ in Millions

3 Months Ended

12 Months Ended

Jan. 31, 2017

Oct. 31, 2016

Jul. 31, 2016

^[1]

Apr. 30, 2016

Jan. 31, 2016

Oct. 31, 2015

Jul. 31, 2015

Apr. 30, 2015

Jan. 31, 2017

Jan. 31, 2016

Jan. 31, 2015

$ 478.8

$ 489.6

$ 550.7

$ 511.9

$ 648.3

$ 599.8

$ 609.5

$ 646.5

$ 2,031.0

$ 2,504.1

$ 2,512.2

^[2]

158.6

169.3

158.6

169.3

Operating Segments

Architecture, Engineering, and Construction | Operating Segments

2,031.0

2,504.1

2,512.2

Manufacturing | Operating Segments

880.9

949.1

872.6

AutoCAD and AutoCAD LT | Operating Segments

625.8

724.6

675.6

Media and Entertainment | Operating Segments

326.7

594.8

695.1

Other | Operating Segments

138.9

160.0

167.3

58.7

75.6

101.6

Americas

871.9

972.8

898.0

Europe, Middle East, and Africa

^[2]

124.7

122.0

124.7

122.0

800.4

934.6

980.0

Asia Pacific

358.7

596.7

634.2

^[2]

15.2

21.6

15.2

21.6

U.S. | Americas

742.1

803.9

736.4

Other Americas | Americas

^[2]

118.8

129.8

168.9

$ 161.6

Europe, Middle East, and Africa | Europe, Middle East, and Africa

^[2]

5.9

3.2

5.9

3.2

^[2]

$ 18.7

$ 25.7

$ 18.7

$ 25.7

[1]

[2]

(1)Long-lived assets exclude deferred tax assets, marketable securities, goodwill, and other intangible assets.

Retirement Benefit Plans - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Funded percentage		73.00%
Accumulated benefit obligation		$ 128.2	$ 127.1
Actual plan asset allocations		43.00%	42.00%
Expected long-term rate of return on plan assets		4.30%	3.80%	3.90%
United States Pension Plan of US Entity
Defined Contribution Plan Disclosure [Line Items]
Maximum annual contributions per employee		50.00%
Cost Recognized		$ 16.4	$ 17.3	$ 11.2
Foreign Pension Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions paid by employer		$ 26.6	$ 23.0	$ 23.5
Scenario, Forecast
Defined Contribution Plan Disclosure [Line Items]
Estimated future employer contributions in next fiscal year	$ 4.3

Retirement Benefit Plans - Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning projected benefit obligation	$ 145.2	$ 144.7
Service cost	5.6	5.7	$ 4.6
Interest cost	3.0	3.3	3.9
Actuarial loss (gain)	7.1	6.3
Benefits paid	(2.6)	(6.5)
Foreign currency exchange rate changes	(9.5)	(10.1)
Curtailments and settlements	(6.8)	(2.2)
Contributions by plan participants	4.4	4.0
Ending projected benefit obligation	146.4	145.2	144.7
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning fair value of plan assets	101.4	104.2
Actual return on plan assets	4.2	1.3
Contributions paid by employer	15.3	4.5
Contributions paid by plan participants	4.4	4.0
Benefit payments	(2.6)	(6.5)
Curtailments and settlements	(6.8)	0.0
Foreign currency exchange rate changes	(8.5)	(6.1)
Ending fair value of plan assets	107.4	101.4	$ 104.2
Funded status	$ (39.0)	$ (43.8)

Retirement Benefit Plans - Balance Sheet (Details) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Amounts Recognized in Balance Sheet	$ 75.9	$ 76.0
Other long-term liabilities
Defined Benefit Plan Disclosure [Line Items]
Amounts Recognized in Balance Sheet	39.0	43.8
Accumulated other comprehensive loss
Defined Benefit Plan Disclosure [Line Items]
Amounts Recognized in Balance Sheet	$ 36.9	$ 32.2

Retirement Benefit Plans - Plan Assets (Details) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	$ 119.2	$ 127.1
Plan Assets	98.3	101.4
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	146.4	145.2
Plan Assets	$ 107.4	$ 101.4

Retirement Benefit Plans - Allocation of Plan Assets (Details) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	$ 107.4	$ 101.4	$ 104.2
Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets
Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets
Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets
Insurance contracts
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	46.3	42.6
Insurance contracts \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0
Insurance contracts \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	46.3
Insurance contracts \| Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0
Other Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	9.4	0.0
Other Investments \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0
Other Investments \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	9.4
Other Investments \| Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0
Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	55.7	42.6
Investments \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0
Investments \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	55.7
Investments \| Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0
Cash
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	0.0	0.3
Investment Fund valued using net asset value
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair Value of Plan Assets	$ 51.7	$ 58.5

Retirement Benefit Plans - Estimated Payments (Details) $ in Millions	Jan. 31, 2017 USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2018	$ 4.2
2019	3.8
2020	3.5
2021	3.5
2022	3.4
2023-2027	$ 19.1

Retirement Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Service cost for benefits earned during the period	$ 5.6	$ 5.7	$ 4.6
Interest cost on projected benefit obligation	3.0	3.3	3.9
Expected return on plan assets	(4.2)	(3.9)	(4.6)
Amortization of prior service credit	(0.3)	(0.1)	(0.1)
Amortization of loss	1.5	1.4	0.6
Settlement loss	1.2	0.0	0.0
Net periodic benefit cost	$ 6.8	$ 6.4	$ 4.4

Retirement Benefit Plans - Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, Portion Attributable to Parent [Abstract]
Prior service credit for period	$ 0.0	$ (2.2)	$ 0.0
Effect of settlement	(1.1)	0.0	0.0
Net loss (gain) for period	7.2	9.1	18.4
Amortization of prior service credit	0.3	0.1	0.1
Amortization of net loss	(1.7)	(1.4)	(0.6)
Other comprehensive loss (income)	$ 4.7	$ 5.6	$ 17.9

Retirement Benefit Plans - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Jan. 31, 2017	Jan. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Net prior service credit	$ (3.6)	$ (3.9)
Net actuarial loss	40.5	36.1
Accumulated other comprehensive loss, before tax	$ 36.9	$ 32.2

Retirement Benefit Plans - AOCI Next Fiscal Year (Details) $ in Millions	12 Months Ended
	Jan. 31, 2017 USD ($)
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year [Abstract]
Amortization of prior service credit	$ 0.3
Amortization of the net loss	(0.3)
Total amortization	$ 0.0

Retirement Benefit Plans - Benefit Cost Assumptions (Details)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Discount rate	3.20%	3.20%	3.30%
Expected long-term rate of return on plan assets	4.30%	3.80%	3.90%
Rate of compensation increase	2.20%	2.20%	2.20%

Retirement Benefit Plans - Benefit Obligation Assumptions (Details)	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Discount rate	1.70%	2.20%	2.40%
Rate of compensation increase	2.60%	2.60%	1.20%

Restructuring charges and other facility exit costs, net (Details)
$ in Millions

12 Months Ended

Jan. 31, 2017

USD ($)

Facility

Position

Jan. 31, 2016

USD ($)

$ 77.8

$ 0.0

Current portion, beginning balance

1.3

1.6

0.8

^[1]

0.7

^[2]

Non-current portion, beginning balance

0.5

^[1]

0.9

^[2]

77.8

0.0

(67.6)

(0.5)

(3.1)

^[3]

0.2

^[4]

Current portion, ending balance

8.4

1.3

^[1]

6.6

0.8

Non-current portion, ending balance

^[1]

1.8

0.5

One-time Termination Benefits | Fiscal 2017 Plan

$ 1.3

1.6

Number of positions eliminated | Position

840

Facility Closing

Lease termination and other exit costs

$ 7.4

9.6

0.0

7.4

(1.8)

(1.1)

4.5

0.0

Facility Closing | Fiscal 2017 Plan

$ 0.0

0.0

Number of facilities consolidated | Facility

Lease termination and other exit costs

$ 7.1

7.6

7.1

(3.2)

(2.0)

1.9

Employee Severance | Fiscal 2017 Plan

63.3

0.0

63.3

(62.2)

0.0

1.1

0.0

Lease Termination | Fiscal 2014 Plan

0.0

0.0

1.2

1.4

0.0

(0.3)

(0.4)

0.0

^[3]

0.2

0.9

1.2

Lease Termination | Fiscal 2013 Plan

1.2

1.4

0.0

0.1

0.2

0.0

(0.1)

0.0

0.0

0.1