Salesforce (CRM) 10-Q 20 May 16 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information shares in Millions	3 Months Ended
	Apr. 30, 2016shares
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2016
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Trading Symbol	CRM
Entity Registrant Name	SALESFORCE COM INC
Entity Central Index Key	1,108,524
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	677.5

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Current assets:
Cash and cash equivalents	$ 1,799,083	$ 1,158,363
Short-term marketable securities	232,109	183,018
Accounts receivable, net	1,192,965	2,496,165
Deferred commissions	243,890	259,187
Prepaid expenses and other current assets	306,625	250,594
Total current assets	3,774,672	4,347,327
Marketable securities, noncurrent	1,684,260	1,383,996
Property and equipment, net	1,711,472	1,715,828
Deferred commissions, noncurrent	180,245	189,943
Capitalized software, net	407,030	384,258
Goodwill	4,129,656	3,849,937
Strategic investments	520,750	520,721
Other assets, net	409,185	370,910
Total assets	12,817,270	12,762,920
Current liabilities:
Accounts payable, accrued expenses and other liabilities	1,093,197	1,349,338
Deferred revenue	3,991,906	4,267,667
Total current liabilities	5,085,103	5,617,005
Convertible 0.25% senior notes, net	1,095,104	1,088,097
Loan assumed on 50 Fremont	198,066	197,998
Deferred revenue, noncurrent	15,008	23,886
Other noncurrent liabilities	839,725	833,065
Total liabilities	7,233,006	7,760,051
Stockholders’ equity:
Common stock	678	671
Additional paid-in capital	6,217,946	5,705,386
Accumulated other comprehensive loss	(28,577)	(49,917)
Accumulated deficit	(605,783)	(653,271)
Total stockholders’ equity	5,584,264	5,002,869
Total liabilities and stockholders’ equity	$ 12,817,270	$ 12,762,920

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical)	Apr. 30, 2016	Jan. 31, 2016
Notes Payable to Banks | 0.25% Convertible Senior Notes due April 1, 2018
Contractual interest rate	0.25%	0.25%

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 30, 2016	Apr. 30, 2015
Revenues:
Subscription and support		$ 1,775,493	$ 1,405,287
Professional services and other		141,110	105,880
Total revenues		1,916,603	1,511,167
Cost of revenues:
Subscription and support	[1],[2]	335,828	274,241
Professional services and other	[1],[2]	161,153	107,561
Total cost of revenues	[1],[2]	496,981	381,802
Gross profit	[1],[2]	1,419,622	1,129,365
Operating expenses:
Research and development	[1],[2]	260,970	222,128
Marketing and sales	[1],[2]	895,860	736,938
General and administrative	[1],[2]	210,806	175,811
Operating lease termination resulting from purchase of 50 Fremont	[1],[2]	0	(36,617)
Total operating expenses	[1],[2]	1,367,636	1,098,260
Income from operations		51,986	31,105
Investment income		8,122	4,561
Interest expense		(22,011)	(16,675)
Gains on sales of strategic investments		12,864	0
Other expense	[1]	(13,806)	(918)
Income before benefit from (provision for) income taxes		37,155	18,073
Benefit from (provision for) income taxes		1,604	(13,981)
Net income		$ 38,759	$ 4,092
Basic net income per share (in dollars per share)		$ 0.06	$ 0.01
Diluted net income per share (in dollars per share)		$ 0.06	$ 0.01
Shares used in computing basic net income per share (in shares)		677,514	653,809
Shares used in computing diluted net income per share (in shares)		686,799	664,310
[1]	Amounts include amortization of purchased intangibles from business combinations, as follows: Three Months Ended April 30, 2016 2015Cost of revenues $22,215 $19,690Marketing and sales 15,386 20,027Other non-operating expense 706 815
[2]	Amounts include stock-based expense, as follows: Three Months Ended April 30, 2016 2015Cost of revenues $26,634 $15,381Research and development 35,168 31,242Marketing and sales 95,474 70,534General and administrative 31,643 25,403

Consolidated Statements of Ope5

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Stock-based expenses	$ 188,919	$ 142,560
Cost of revenues
Amortization of purchased intangibles from business combinations	22,215	19,690
Stock-based expenses	26,634	15,381
Marketing and sales
Amortization of purchased intangibles from business combinations	15,386	20,027
Stock-based expenses	95,474	70,534
Research and development
Stock-based expenses	35,168	31,242
Other non-operating expense
Amortization of purchased intangibles from business combinations	706	815
General and administrative
Stock-based expenses	$ 31,643	$ 25,403

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 38,759	$ 4,092
Other comprehensive income (loss), before tax and net of reclassification adjustments:
Foreign currency translation and other gains (losses)	10,256	(1,855)
Unrealized gains (losses) on investments	11,084	(2,389)
Other comprehensive income (loss), before tax	21,340	(4,244)
Tax effect	0	0
Other comprehensive income (loss), net of tax	21,340	(4,244)
Comprehensive income (loss)	$ 60,099	$ (152)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 30, 2016	Apr. 30, 2015
Operating activities:
Net income		$ 38,759	$ 4,092
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		132,772	127,927
Amortization of debt discount and transaction costs		7,185	5,861
Gains on sales of strategic investments		(12,864)	0
50 Fremont lease termination	[1],[2]	0	(36,617)
Amortization of deferred commissions		88,514	77,155
Expenses related to employee stock plans		188,919	142,560
Changes in assets and liabilities, net of business combinations:
Accounts receivable, net		1,307,312	979,170
Deferred commissions		(63,519)	(50,092)
Prepaid expenses and other current assets and other assets		(56,671)	(11,274)
Accounts payable, accrued expenses and other liabilities		(286,228)	(239,072)
Deferred revenue		(293,117)	(264,629)
Net cash provided by operating activities		1,051,062	735,081	[3]
Investing activities:
Business combinations, net of cash acquired		(1,799)	(12,470)
Purchase of 50 Fremont land and building		0	(425,376)
Deposit for purchase of 50 Fremont land and building		0	115,015
Non-refundable amounts received for sale of land available for sale		0	2,852
Strategic investments		(22,061)	(144,462)
Purchases of marketable securities		(589,336)	(207,225)
Sales of marketable securities		222,934	192,184
Maturities of marketable securities		23,285	14,446
Capital expenditures		(83,301)	(71,087)
Net cash used in investing activities		(450,278)	(536,123)
Financing activities:
Proceeds from employee stock plans		89,141	155,015
Principal payments on capital lease obligations		(49,968)	(16,825)
Payments on revolving credit facility and term loan		0	(300,000)
Net cash provided by (used in) financing activities		39,173	(161,810)	[3]
Effect of exchange rate changes		763	(3,309)
Net increase in cash and cash equivalents		640,720	33,839
Cash and cash equivalents, beginning of period		1,158,363	908,117
Cash and cash equivalents, end of period		1,799,083	941,956
Cash paid during the period for:
Interest		23,750	4,252
Income taxes, net of tax refunds		7,909	10,581
Non-cash financing and investing activities:
Fixed assets acquired under capital leases		585	2,960
Building - leased facility acquired under financing obligation		1,676	19,966
Fair value of loan assumed on 50 Fremont		0	198,751
Fair value of equity awards assumed		$ 11,449	$ 0
Fair value of common stock issued as consideration for business combination		278,372	0
[1]	Amounts include amortization of purchased intangibles from business combinations, as follows: Three Months Ended April 30, 2016 2015Cost of revenues $22,215 $19,690Marketing and sales 15,386 20,027Other non-operating expense 706 815
[2]	Amounts include stock-based expense, as follows: Three Months Ended April 30, 2016 2015Cost of revenues $26,634 $15,381Research and development 35,168 31,242Marketing and sales 95,474 70,534General and administrative 31,643 25,403
[3]	During the three months ended April 30, 2016, the Company early adopted Accounting Standards Update No. 2016-09, “Improvements to Employee Share-Based Payment Accounting (Topic 718)” (“ASU 2016-09”), which addresses among other items, updates to the presentation and treatment of excess tax benefits related to stock based compensation. The Company has adopted changes to the consolidated statements of cash flows on a retrospective basis. The impact for the three months ended April 30, 2015 to net cash provided by operating activities and net cash used in financing activities was $4,224.

Consolidated Statements of Cas8

Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	3 Months Ended
	Apr. 30, 2015USD ($)
Impact of net cash provided by operating activities	$ 735,081	[1]
Impact of net cash provided by financing activities	(161,810)	[1]
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2016-09 [Member]
Impact of net cash provided by operating activities	4,224
Impact of net cash provided by financing activities	$ 4,224
[1]	During the three months ended April 30, 2016, the Company early adopted Accounting Standards Update No. 2016-09, “Improvements to Employee Share-Based Payment Accounting (Topic 718)” (“ASU 2016-09”), which addresses among other items, updates to the presentation and treatment of excess tax benefits related to stock based compensation. The Company has adopted changes to the consolidated statements of cash flows on a retrospective basis. The impact for the three months ended April 30, 2015 to net cash provided by operating activities and net cash used in financing activities was $4,224.

Summary of Business and Signifi

Summary of Business and Significant Accounting Policies	3 Months Ended
	Apr. 30, 2016
Accounting Policies [Abstract]
Summary of Business and Significant Accounting Policies	Summary of Business and Significant Accounting Policies Description of Business Salesforce.com, inc. (the “Company”) is a leading provider of enterprise cloud computing solutions, with a focus on customer relationship management, or CRM. The Company introduced its first CRM solution in February 2000, and has since expanded its service offerings with new editions, solutions, features and platform capabilities. The Company's mission is to help its customers transform themselves into customer-centric companies by empowering them to connect with their customers in entirely new ways. The Company's Customer Success Platform, including sales force automation, customer service and support, marketing automation, community management, analytics, application development, Internet of Things integration and the Company's professional cloud services, provide the next-generation platform of enterprise applications and services to enable customer success. Fiscal Year The Company’s fiscal year ends on January 31. References to fiscal 2017, for example, refer to the fiscal year ending January 31, 2017 . Basis of Presentation The accompanying consolidated balance sheet as of April 30, 2016 and the consolidated statements of operations, the consolidated statements of comprehensive income (loss) and the consolidated statements of cash flows for the three months ended April 30, 2016 and 2015 , respectively, are unaudited. The consolidated balance sheet data as of January 31, 2016 was derived from the audited consolidated financial statements that are included in the Company’s fiscal 2016 Form 10-K, which was filed with the Securities and Exchange Commission (the “SEC”) on March 7, 2016 . The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in the Company’s fiscal 2016 Form 10-K. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of the Company’s management, the unaudited consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements in the Form 10-K, and include all adjustments necessary for the fair presentation of the Company’s balance sheet as of April 30, 2016 , and its results of operations, including its comprehensive income (loss), and its cash flows for the three months ended April 30, 2016 and 2015 . All adjustments are of a normal recurring nature. The results for the three months ended April 30, 2016 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2017 . Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the Company’s consolidated financial statements and notes thereto. Significant estimates and assumptions made by management include the determination of: • the best estimate of selling price of the deliverables included in multiple deliverable revenue arrangements, • the fair value of assets acquired and liabilities assumed for business combinations, • the recognition, measurement and valuation of current and deferred income taxes, • the fair value of convertible notes, • the fair value of stock awards issued and related forfeiture rates, • the useful lives of intangible assets, property and equipment and building and structural components, and • the valuation of strategic investments and the determination of other-than-temporary impairments. Actual results could differ materially from those estimates. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the result of which forms the basis for making judgments about the carrying values of assets and liabilities. Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Segments The Company operates as one operating segment. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, who is the chief executive officer, in deciding how to allocate resources and assessing performance. Over the past few years, the Company has completed several acquisitions. These acquisitions have allowed the Company to expand its offerings, presence and reach in various market segments of the enterprise cloud computing market. While the Company has offerings in multiple enterprise cloud computing market segments, the Company’s business operates in one operating segment because all of the Company's offerings operate on a single platform and are deployed in an identical way, and the Company’s chief operating decision maker evaluates the Company’s financial information and resources and assesses the performance of these resources on a consolidated basis. Since the Company operates in one operating segment, all required financial segment information can be found in the consolidated financial statements. Concentrations of Credit Risk and Significant Customers The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities and trade accounts receivable. Collateral is not required for accounts receivable. The Company maintains an allowance for doubtful accounts receivable balances. This allowance is 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 delinquent accounts. No single customer accounted for more than five percent of accounts receivable at April 30, 2016 and January 31, 2016 . No single customer accounted for five percent or more of total revenue during the three months ended April 30, 2016 and 2015 . Geographic Locations As of April 30, 2016 and January 31, 2016 , assets located outside the Americas were 11 percent of total assets. Revenues by geographical region are as follows (in thousands): Three Months Ended April 30, 2016 2015 Americas $ 1,413,229 $ 1,115,120 Europe 327,854 258,805 Asia Pacific 175,520 137,242 $ 1,916,603 $ 1,511,167 Americas revenue attributed to the United States was approximately 97 percent and 95 percent during the three months ended April 30, 2016 and 2015 , respectively. No other country represented more than ten percent of total revenue during the three months ended April 30, 2016 and 2015 . Revenue Recognition The Company derives its revenues from two sources: (1) subscription revenues, which are comprised of subscription fees from customers accessing the Company’s enterprise cloud computing services and from customers paying for additional support beyond the standard support that is included in the basic subscription fees; and (2) related professional services such as process mapping, project management, implementation services and other revenue. “Other revenue” consists primarily of training fees. The Company commences revenue recognition when all of the following conditions are satisfied: • there is persuasive evidence of an arrangement; • the service has been or is being provided to the customer; • the collection of the fees is reasonably assured; and • the amount of fees to be paid by the customer is fixed or determinable. The Company’s subscription service arrangements are non-cancelable and do not contain refund-type provisions. Subscription and Support Revenues Subscription and support revenues are recognized ratably over the contract terms beginning on the commencement date of each contract, which is the date the Company’s service is made available to customers. Amounts that have been invoiced are recorded in accounts receivable and in deferred revenue or revenue, depending on whether the revenue recognition criteria have been met. Professional Services and Other Revenues The Company’s professional services contracts are either on a time and material or fixed fee basis. When these services are not combined with subscription revenues as a single unit of accounting, as discussed below, these revenues are recognized as the services are rendered for time and material contracts, and when the milestones are achieved and accepted by the customer for fixed price contracts. Training revenues are recognized as the services are performed. Multiple Deliverable Arrangements The Company enters into arrangements with multiple deliverables that generally include multiple subscriptions, premium support and professional services. If the deliverables have standalone value upon delivery, the Company accounts for each deliverable separately. Subscription services have standalone value as such services are often sold separately. In determining whether professional services have standalone value, the Company considers the following factors for each professional services agreement: availability of the services from other vendors, the nature of the professional services, the timing of when the professional services contract was signed in comparison to the subscription service start date and the contractual dependence of the subscription service on the customer’s satisfaction with the professional services work. To date, the Company has concluded that all of the professional services included in multiple deliverable arrangements executed have standalone value. Multiple deliverables included in an arrangement are separated into different units of accounting and the arrangement consideration is allocated to the identified separate units based on a relative selling price hierarchy. The Company determines the relative selling price for a deliverable based on its vendor-specific objective evidence of selling price (“VSOE”), if available, or its best estimate of selling price (“BESP”), if VSOE is not available. The Company has determined that third-party evidence of selling price (“TPE”) is not a practical alternative due to differences in its service offerings compared to other parties and the availability of relevant third-party pricing information. The amount of revenue allocated to delivered items is limited by contingent revenue, if any. For certain professional services, the Company has established VSOE as a consistent number of standalone sales of these deliverables have been priced within a reasonably narrow range. The Company has not established VSOE for its subscription services due to lack of pricing consistency, the introduction of new services and other factors. Accordingly, the Company uses its BESP to determine the relative selling price for its subscription services. The Company determines BESP by considering its overall pricing objectives and market conditions. Significant pricing practices taken into consideration include the Company’s discounting practices, the size and volume of the Company’s transactions, the customer demographic, the geographic area where services are sold, price lists, its go-to-market strategy, historical standalone sales and contract prices. The determination of BESP is made through consultation with and approval by the Company’s management, taking into consideration the go-to-market strategy. As the Company’s go-to-market strategies evolve, the Company may modify its pricing practices in the future, which could result in changes in relative selling prices, including both VSOE and BESP. Deferred Revenue The deferred revenue balance does not represent the total contract value of annual or multi-year, non-cancelable subscription agreements. Deferred revenue primarily consists of billings or payments received in advance of revenue recognition from subscription services described above and is recognized as the revenue recognition criteria are met. The Company generally invoices customers in annual installments. The deferred revenue balance is influenced by several factors, including seasonality, the compounding effects of renewals, invoice duration, invoice timing, size and new business linearity within the quarter. Deferred revenue that will be recognized during the succeeding twelve month period is recorded as current deferred revenue and the remaining portion is recorded as noncurrent. Deferred Commissions Deferred commissions are the incremental costs that are directly associated with non-cancelable subscription contracts with customers and consist of sales commissions paid to the Company’s direct sales force. The commissions are deferred and amortized over the non-cancelable terms of the related customer contracts, which are typically 12 to 36 months . The commission payments are paid in full the month after the customer’s service commences and are a direct and incremental cost of the revenue arrangements. The deferred commission amounts are recoverable through the future revenue streams under the non-cancelable customer contracts. The Company believes this is the preferable method of accounting as the commission charges are so closely related to the revenue from the non-cancelable customer contracts that they should be recorded as an asset and charged to expense over the same period that the subscription revenue is recognized. Amortization of deferred commissions is included in marketing and sales expense in the accompanying consolidated statements of operations. Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents are stated at fair value. Marketable Securities Management determines the appropriate classification of marketable securities at the time of purchase and reevaluates such determination at each balance sheet date. Securities are classified as available for sale and are carried at fair value, with the change in unrealized gains and losses, net of tax, reported as a separate component on the consolidated statements of comprehensive income (loss). Fair value is determined based on quoted market rates when observable or utilizing data points that are observable, such as quoted prices, interest rates and yield curves. Declines in fair value judged to be other-than-temporary on securities available for sale are included as a component of investment income. In order to determine whether a decline in value is other-than-temporary, the Company evaluates, among other factors: the duration and extent to which the fair value has been less than the carrying value and its intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in fair value. The cost of securities sold is based on the specific-identification method. Interest on securities classified as available for sale is also included as a component of investment income. Fair Value Measurement The Company measures its cash equivalents, marketable securities and foreign currency derivative contracts at fair value. The additional disclosures regarding the Company’s fair value measurements are included in Note 2 “Investments.” Property and Equipment Property and equipment are stated at cost. Depreciation is calculated on a straight-line basis over the estimated useful lives of those assets as follows: Computers, equipment and software 3 to 9 years Furniture and fixtures 5 years Leasehold improvements Shorter of the estimated lease term or 10 years Building and structural components Average weighted useful life of 32 years Building- leased facility 27 years Building improvements 10 years When assets are retired or otherwise disposed of, the cost and accumulated depreciation and amortization are removed from their respective accounts and any loss on such retirement is reflected in operating expenses. Capitalized Internal-Use Software Costs The Company capitalizes costs related to its enterprise cloud computing services and certain projects for internal use incurred during the application development stage. Costs related to preliminary project activities and post implementation activities are expensed as incurred. Internal-use software is amortized on a straight-line basis over its estimated useful life, which is generally three to five years. Management evaluates the useful lives of these assets on an annual basis and tests for impairment whenever events or changes in circumstances occur that could impact the recoverability of these assets. Goodwill and Intangible Assets Impairment Assessments The Company evaluates and tests the recoverability of its goodwill for impairment at least annually during the fourth quarter or more often if and when circumstances indicate that goodwill may not be recoverable. Intangible assets are amortized over their useful lives. Each period the Company evaluates the estimated remaining useful life of its intangible assets and whether events or changes in circumstances warrant a revision to the remaining period of amortization. The carrying amounts of these assets are periodically reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of these assets may not be recoverable. Recoverability of these assets is measured by comparison of the carrying amount of each asset to the future undiscounted cash flows the asset is expected to generate. If the undiscounted cash flows used in the test for recoverability are less than the carrying amount of these assets, then the carrying amount of such assets is reduced to fair value. Long-Lived Assets and Impairment Assessment The Company evaluates long-lived assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. This includes but is not limited to significant adverse changes in business climate, market conditions, or other events that indicate an asset's carrying amount may not be recoverable. If such review indicates that the carrying amount of long-lived assets is not recoverable, the carrying amount of such assets is reduced to fair value. There was no impairment of long-lived assets during the three months ended April 30, 2016 and 2015 , respectively. Business Combinations The Company uses its best estimates and assumptions to accurately assign fair value to the tangible and intangible assets acquired and liabilities assumed at the acquisition date. The Company’s estimates are inherently uncertain and subject to refinement. During the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed, with the corresponding offset to goodwill. In addition, uncertain tax positions and tax-related valuation allowances are initially established in connection with a business combination as of the acquisition date. The Company continues to collect information and reevaluates these estimates and assumptions quarterly and records any adjustments to the Company’s preliminary estimates to goodwill provided that the Company is within the measurement period. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Company’s consolidated statements of operations. In the event that the Company enters into a business combination with an entity in which the Company previously held a strategic investment, significant gains or losses will be disclosed separately within the statements of operations. Leases and Asset Retirement Obligations The Company categorizes leases at their inception as either operating or capital leases. In certain lease agreements, the Company may receive rent holidays and other incentives. The Company recognizes lease costs on a straight-line basis once control of the space is achieved, without regard to deferred payment terms such as rent holidays that defer the commencement date of required payments. Additionally, incentives received are treated as a reduction of costs over the term of the agreement. The Company establishes assets and liabilities for the present value of estimated future costs to retire long-lived assets at the termination or expiration of a lease. Such assets are depreciated over the lease period to operating expense. In the event the Company is the deemed owner for accounting purposes during construction, the Company records assets and liabilities for the estimated construction costs incurred under build-to-suit lease arrangements to the extent it is involved in the construction of structural improvements or takes construction risk prior to commencement of a lease. The Company additionally has entered into subleases for unoccupied leased office space. Losses are recognized in the period the sublease is executed. Any sublease payments received in excess of the straight-line rent payments for the sublease are recorded in other income (expense). Accounting for Stock-Based Expense The Company recognizes stock-based expenses related to stock options and restricted stock awards on a straight-line basis over the requisite service period of the awards, which is generally the vesting term of four years . The aggregate stock compensation remaining to be amortized to costs and expenses will be recognized over a weighted average period of 2.2 years . The Company recognizes stock-based expenses related to shares issued pursuant to its Amended and Restated 2004 Employee Stock Purchase Plan (“ESPP” or “2004 Employee Stock Purchase Plan”) on a straight-line basis over the offering period, which is 12 months . Stock-based expenses are recognized net of estimated forfeiture activity. The estimated forfeiture rate applied is based on historical forfeiture rates. The Company does not anticipate paying any cash dividends in the foreseeable future and therefore uses an expected dividend yield of zero in the option pricing model. The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions and fair value per share: Three Months Ended Stock Options 2016 2015 Volatility 32.1 % 37.4 % Estimated life 3.5 years 3.6 years Risk-free interest rate 0.9-1.0 % 1.13-1.36 % Weighted-average fair value per share of grants $ 17.35 $ 19.52 The Company estimated its future stock price volatility considering both its observed option-implied volatilities and its historical volatility calculations. Management believes this is the best estimate of the expected volatility over the expected life of its stock options and stock purchase rights. The estimated life for the stock options was based on an analysis of historical exercise activity. ESPP assumptions and the related fair value per share table will only be disclosed in the three month period in which there is ESPP activity, such as an ESPP purchase. The Company's ESPP Plan allows for two purchases during the year. The estimated life of the ESPP will be based on the two purchase periods within each offering period. The risk-free interest rate is based on the rate for a U.S. government security with the same estimated life at the time of the option grant and the stock purchase rights. Income Taxes The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on temporary differences between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws is recognized in the consolidated statement of operations in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are more likely than not expected to be realized based on the weighting of positive and negative evidence. Future realization of deferred tax assets ultimately depends on the existence of sufficient taxable income of the appropriate character (for example, ordinary income or capital gain) within the carryback or carryforward periods available under the applicable tax law. The Company regularly reviews the deferred tax assets for recoverability based on historical taxable income, projected future taxable income, the expected timing of the reversals of existing temporary differences and tax planning strategies. The Company’s judgments regarding future profitability may change due to many factors, including future market conditions and the ability to successfully execute its business plans and/or tax planning strategies. Should there be a change in the ability to recover deferred tax assets, the tax provision would increase or decrease in the period in which the assessment is changed. The Company’s tax positions are subject to income tax audits by multiple tax jurisdictions throughout the world. The Company recognizes the tax benefit of an uncertain tax position only if it is more likely than not that the position is sustainable upon examination by the taxing authority, solely based on its technical merits. The tax benefit recognized is measured as the largest amount of benefit which is greater than 50 percent likely to be realized upon settlement with the taxing authority. The Company recognizes interest accrued and penalties related to unrecognized tax benefits in the income tax provision. Foreign Currency Translation The functional currency of the Company’s major foreign subsidiaries is generally the local currency. Adjustments resulting from translating foreign functional currency financial statements into U.S. dollars are recorded as a separate component on the consolidated statements of comprehensive income (loss). Foreign currency transaction gains and losses are included in net income (loss) for the period. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenues and expenses are translated at the average exchange rate during the period. Equity transactions are translated using historical exchange rates. Warranties and Indemnification The Company’s enterprise cloud computing services are typically warranted to perform in a manner consistent with general industry standards that are reasonably applicable and materially in accordance with the Company’s online help documentation under normal use and circumstances. The Company’s arrangements generally include certain provisions for indemnifying customers against liabilities if its products or services infringe a third party’s intellectual property rights. To date, the Company has not incurred any material costs as a result of such obligations and has not accrued any material liabilities related to such obligations in the accompanying consolidated financial statements. The Company has also agreed to indemnify its directors and executive officers for costs associated with any fees, expenses, judgments, fines and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by the Company, arising out of that person’s services as the Company’s director or officer or that person’s services provided to any other company or enterprise at the Company’s request. The Company maintains director and officer insurance coverage that would generally enable the Company to recover a portion of any future amounts paid. The Company may also be subject to indemnification obligations by law with respect to the actions of its employees under certain circumstances and in certain jurisdictions. New Accounting Pronouncements Adopted In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs” (“ASU 2015-03”), which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. However, ASU 2015-03 does not address deferred issuance costs for line-of-credit arrangements; therefore, in August 2015, the FASB issued Accounting Standards Update No. 2015-15, “Interest-Imputation of Interest: Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements” (“ASU 2015-15”). ASU 2015-15 allows an entity to defer debt issuance costs associated with line-of-credit arrangements, including arrangements with no outstanding borrowings, and classify them as an asset, and amortize them over the term of the arrangements. The recognition and measurement guidance for debt issuance costs is not affected by the standards. The Company adopted the standards in the three months ended April 30, 2016. Upon adoption, the unamortized debt issuance costs previously reported in Other assets, net, with a carrying amount of approximately $7.9 million at January 31, 2016, were reclassified and presented as a deduction of the corresponding liabilities, Convertible 0.25% senior notes, net and Loan assumed on 50 Fremont. In September 2015, the FASB issued Accounting Standards Update No. 2015-16, “Simplifying the Accounting for Measurement-Period Adjustments (Topic 805)” (“ASU 2015-16”), which eliminates the requirement to restate prior period financial statements for measurement period adjustments in business combinations. ASU 2015-16 requires that the cumulative impact of a measurement period adjustment (including the impact on prior periods) be recognized in the reporting period in which the adjustment is identified. The Company adopted this standard during the three months ending April 30, 2016 and there was no material impact of this on the Company's financial statements. In March 2016, the FASB issued Accounting Standards Update No. 2016-09, “Stock Compensation (Topic 718): Improvements to Employee Shared-Based Payment Accounting” (“ASU 2016-09”) which simplifies and improves several aspects of the accounting for employee share-based payment transactions for public entities. The new guidance requires companies to record excess tax benefits and tax deficiencies as income tax benefit or expense in the statement of operations when the awards vest or are settled, and eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the statement of cash flows. The Company early adopted the standard in the three months ended April 30, 2016. Upon adoption, the Company recognized the previously unrecognized excess tax benefits using the modified retrospective transition method, which resulted in a cumulative-effect adjustment of $8.7 million to accumulated deficit. This adjustment reduced the April 30, 2016 accumulated deficit balance. The previously unrecognized excess tax effects were recorded as a deferred tax asset, which was fully offset by a valuation allowance. Without the valuation allowance, the Company’s deferred tax asset would have increased by $614.5 million . The Company also elected to apply the change in presentation to the statements of cash flows retrospectively and no longer classified the excess tax benefits from employee stock plans as a reduction from operating cash flows for all periods presented. Pending Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) which amended the existing FASB Accounting Standards Codification. This standard establishes a principle for recognizing revenue upon the transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. The standard also provides guidance on the recognition of costs related to obtaining and fulfilling customer contracts. The FASB deferred the effective date for the new revenue reporting standard for entities reporting under U.S. GAAP for one year. In accordance with the deferral, ASU 201

Investments

Investments	3 Months Ended
	Apr. 30, 2016
Investments Schedule [Abstract]
Investments	Investments Marketable Securities At April 30, 2016 , marketable securities consisted of the following (in thousands): Investments classified as Marketable Securities Amortized Cost Unrealized Gains Unrealized Losses Fair Value Corporate notes and obligations $ 1,089,511 $ 5,661 $ (1,277 ) $ 1,093,895 U.S. treasury securities 221,467 783 (39 ) 222,211 Mortgage backed obligations 125,778 213 (174 ) 125,817 Asset backed securities 334,894 481 (190 ) 335,185 Municipal securities 74,987 319 (86 ) 75,220 Foreign government obligations 31,898 79 (3 ) 31,974 U.S. agency obligations 32,058 20 (11 ) 32,067 Total marketable securities $ 1,910,593 $ 7,556 $ (1,780 ) $ 1,916,369 At January 31, 2016 , marketable securities consisted of the following (in thousands): Investments classified as Marketable Securities Amortized Cost Unrealized Gains Unrealized Losses Fair Value Corporate notes and obligations $ 949,266 $ 1,398 $ (2,983 ) $ 947,681 U.S. treasury securities 157,625 375 (56 ) 157,944 Mortgage backed obligations 104,242 106 (323 ) 104,025 Asset backed securities 271,292 186 (226 ) 271,252 Municipal securities 44,934 209 (6 ) 45,137 Foreign government obligations 18,014 42 (5 ) 18,051 U.S. agency obligations 16,076 16 (6 ) 16,086 Covered bonds 6,690 148 0 6,838 Total marketable securities $ 1,568,139 $ 2,480 $ (3,605 ) $ 1,567,014 The duration of the investments classified as marketable securities is as follows (in thousands): As of April 30, January 31, Recorded as follows: Short-term (due in one year or less) $ 232,109 $ 183,018 Long-term (due after one year) 1,684,260 1,383,996 $ 1,916,369 $ 1,567,014 As of April 30, 2016 , the following marketable securities were in an unrealized loss position (in thousands): Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Corporate notes and obligations $ 272,239 $ (813 ) $ 61,847 $ (464 ) $ 334,086 $ (1,277 ) U.S. treasury securities 47,552 (39 ) 0 0 47,552 (39 ) Mortgage backed obligations 52,427 (126 ) 8,986 (48 ) 61,413 (174 ) Asset backed securities 106,226 (148 ) 12,371 (42 ) 118,597 (190 ) Municipal securities 18,065 (86 ) 0 0 18,065 (86 ) Foreign government obligations 7,650 (3 ) 0 0 7,650 (3 ) U.S. agency obligations 13,481 (11 ) 0 0 13,481 (11 ) $ 517,640 $ (1,226 ) $ 83,204 $ (554 ) $ 600,844 $ (1,780 ) The unrealized losses for each of the fixed rate marketable securities were less than $98,000 . The Company does not believe any of the unrealized losses represent an other-than-temporary impairment based on its evaluation of available evidence as of April 30, 2016 . The Company expects to receive the full principal and interest on all of these marketable securities. Fair Value Measurement All of the Company’s cash equivalents, marketable securities and foreign currency derivative contracts are classified within Level 1 or Level 2 because the Company’s cash equivalents, marketable securities and foreign currency derivative contracts are valued using quoted market prices or alternative pricing sources and models utilizing observable market inputs. The Company uses a three-tier fair value hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value: Level 1. Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2. Other inputs that are directly or indirectly observable in the marketplace. Level 3. Unobservable inputs which are supported by little or no market activity. The following table presents information about the Company’s assets and liabilities that are measured at fair value as of April 30, 2016 and indicates the fair value hierarchy of the valuation (in thousands): Description Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balances as of April 30, 2016 Cash equivalents (1): Time deposits $ 0 $ 347,815 $ 0 $ 347,815 Money market mutual funds 868,519 0 0 868,519 Agency and sovereign paper 0 2,904 0 2,904 Marketable securities: Corporate notes and obligations 0 1,093,895 0 1,093,895 U.S. treasury securities 0 222,211 0 222,211 Mortgage backed obligations 0 125,817 0 125,817 Asset backed securities 0 335,185 0 335,185 Municipal securities 0 75,220 0 75,220 Foreign government obligations 0 31,974 0 31,974 U.S. agency obligations 0 32,067 0 32,067 Foreign currency derivative contracts (2) 0 19,871 0 19,871 Total Assets $ 868,519 $ 2,286,959 $ 0 $ 3,155,478 Liabilities Foreign currency derivative contracts (3) $ 0 $ 7,973 $ 0 $ 7,973 Total Liabilities $ 0 $ 7,973 $ 0 $ 7,973 _____________ (1) Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of April 30, 2016 , in addition to $579.8 million of cash. (2) Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of April 30, 2016 . (3) Included in “accounts payable, accrued expenses and other liabilities” in the consolidated balance sheet as of April 30, 2016 . The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2016 and indicates the fair value hierarchy of the valuation (in thousands): Description Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balances as of January 31, 2016 Cash equivalents (1): Time deposits $ 0 $ 236,798 $ 0 $ 236,798 Money market mutual funds 216,107 0 0 216,107 Commercial paper 0 159,230 0 159,230 Agency and sovereign paper 0 13,599 0 13,599 Marketable securities: Corporate notes and obligations 0 947,681 0 947,681 U.S. treasury securities 0 157,944 0 157,944 Mortgage backed obligations 0 104,025 0 104,025 Asset backed securities 0 271,252 0 271,252 Municipal securities 0 45,137 0 45,137 Foreign government obligations 0 18,051 0 18,051 U.S. agency obligations 0 16,086 0 16,086 Covered bonds 0 6,838 0 6,838 Foreign currency derivative contracts (2) 0 4,731 0 4,731 Total Assets $ 216,107 $ 1,981,372 $ 0 $ 2,197,479 Liabilities Foreign currency derivative contracts (3) $ 0 $ 14,025 $ 0 $ 14,025 Total Liabilities $ 0 $ 14,025 $ 0 $ 14,025 ______________ (1) Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of January 31, 2016 , in addition to $532.6 million of cash. (2) Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of January 31, 2016 . (3) Included in “accounts payable, accrued expenses and other liabilities” in the accompanying consolidated balance sheet as of January 31, 2016 . Derivative Financial Instruments The Company enters into foreign currency derivative contracts with financial institutions to reduce foreign exchange risk. The Company uses forward currency derivative contracts to minimize the Company’s exposure to balances primarily denominated in British pounds, Euros, Japanese yen, Canadian dollars and Australian dollars. The Company’s foreign currency derivative contracts, which are not designated as hedging instruments, are used to reduce the exchange rate risk associated primarily with intercompany receivables and payables. The Company’s derivative financial instruments program is not designated for trading or speculative purposes. As of April 30, 2016 and January 31, 2016 , the foreign currency derivative contracts that were not settled were recorded at fair value on the consolidated balance sheets. Foreign currency derivative contracts are marked-to-market at the end of each reporting period with gains and losses recognized as other expense to offset the gains or losses resulting from the settlement or remeasurement of the underlying foreign currency denominated receivables and payables. While the contract or notional amount is often used to express the volume of foreign currency derivative contracts, the amounts potentially subject to credit risk are generally limited to the amounts, if any, by which the counterparties’ obligations under the agreements exceed the obligations of the Company to the counterparties. Details on outstanding foreign currency derivative contracts related primarily to intercompany receivables and payables are presented below (in thousands): As of April 30, 2016 January 31, 2016 Notional amount of foreign currency derivative contracts $ 1,513,108 $ 1,274,515 Fair value of foreign currency derivative contracts $ 11,898 $ (9,294 ) The fair value of the Company’s outstanding derivative instruments are summarized below (in thousands): Fair Value of Derivative Instruments As of Balance Sheet Location April 30, 2016 January 31, 2016 Derivative Assets Derivatives not designated as hedging instruments: Foreign currency derivative contracts Prepaid expenses and other current assets $ 19,871 $ 4,731 Derivative Liabilities Derivatives not designated as hedging instruments: Foreign currency derivative contracts Accounts payable, accrued expenses and other liabilities $ 7,973 $ 14,025 The effect of the derivative instruments not designated as hedging instruments on the consolidated statements of operations during the three months ended April 30, 2016 and 2015 , respectively, are summarized below (in thousands): Derivatives Not Designated as Hedging Gains (losses) on Derivative Instruments Three Months Ended Location 2016 2015 Foreign currency derivative contracts Other expense $ (1,442 ) $ 11,459 Strategic Investments The Company's strategic investments are comprised of marketable equity securities and non-marketable debt and equity securities. Marketable equity securities are measured using quoted prices in their respective active markets and the non-marketable equity and debt securities are recorded at cost. These investments are presented on the consolidated balance sheets within strategic investments. As of April 30, 2016 , the Company had six investments in marketable equity securities with a fair value of $20.4 million , which includes an unrealized gain of $13.1 million . As of January 31, 2016 , the Company had six investments in marketable equity securities with a fair value of $16.2 million , which included an unrealized gain of $8.5 million . The change in the fair value of the investments in publicly held companies is recorded in the consolidated balance sheets within strategic investments and accumulated other comprehensive loss. The Company’s interest in non-marketable debt and equity securities consists of noncontrolling debt and equity investments in privately held companies. The Company’s investments in these privately held companies are reported at cost or marked down to fair value when an event or circumstance indicates an other-than-temporary decline in value has occurred. These investments are valued using significant unobservable inputs or data in an inactive market and the valuation requires the Company's judgment due to the absence of market prices and inherent lack of liquidity. As of April 30, 2016 and January 31, 2016 , the carrying value of the Company’s non-marketable debt and equity securities was $500.3 million and $504.5 million , respectively. The estimated fair value of the non-marketable debt and equity securities was approximately $706.9 million and $714.1 million as of April 30, 2016 and January 31, 2016 , respectively. These investments are measured using the cost method of accounting, therefore the unrealized gains of $206.6 million and $209.6 million as of April 30, 2016 and January 31, 2016 , respectively, are not recorded in the consolidated financial statements. Investment Income Investment income consists of interest income, realized gains, and realized losses on the Company’s cash, cash equivalents and marketable securities. The components of investment income are presented below (in thousands): Three Months Ended April 30, 2016 2015 Interest income $ 7,773 $ 3,049 Realized gains 1,054 2,128 Realized losses (705 ) (616 ) Total investment income $ 8,122 $ 4,561 Reclassification adjustments out of accumulated other comprehensive income (loss) into net income were immaterial for the three months ended April 30, 2016 and 2015 , respectively.

Property and Equipment

Property and Equipment	3 Months Ended
	Apr. 30, 2016
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and Equipment Property and equipment, net consisted of the following (in thousands): As of April 30, 2016 January 31, 2016 Land $ 183,888 $ 183,888 Buildings and building improvements 618,510 614,081 Computers, equipment and software 1,321,660 1,281,766 Furniture and fixtures 85,327 82,242 Leasehold improvements 499,108 473,688 $ 2,708,493 $ 2,635,665 Less accumulated depreciation and amortization (997,021 ) (919,837 ) $ 1,711,472 $ 1,715,828 Depreciation and amortization expense totaled $75.6 million and $72.5 million during the three months ended April 30, 2016 and 2015 , respectively. Computers, equipment and software at April 30, 2016 and January 31, 2016 included a total of $748.4 million and $747.1 million acquired under capital lease agreements, respectively. Accumulated amortization relating to computers, equipment and software under capital leases totaled $335.5 million and $310.3 million , respectively, at April 30, 2016 and January 31, 2016 . Amortization of assets under capital leases is included in depreciation and amortization expense. Building - 350 Mission In December 2013, the Company entered into a lease agreement for approximately 445,000 rentable square feet of office space at 350 Mission Street (“350 Mission”) in San Francisco, California, which is the total office space available in the building. As a result of the Company’s involvement during the construction period, the Company is considered for accounting purposes to be the owner of the construction project. As a result, the Company has capitalized the construction costs as Building with a corresponding current and noncurrent financing obligation liability and has accounted for the underlying land implicitly as an operating lease. As of April 30, 2016 , the Company had capitalized $178.8 million of construction costs, based on the construction costs incurred to date by the landlord, and recorded a corresponding current and noncurrent financing obligation liability of $18.1 million and $202.2 million , respectively. As of January 31, 2016 , the Company had capitalized $174.6 million of construction costs, based on the construction costs incurred to date by the landlord, and recorded a corresponding current and noncurrent financing obligation liability of $15.4 million and $196.7 million , respectively. The total expected financing obligation in the form of minimum lease payments inclusive of the amounts currently recorded, is $336.9 million , including interest (see Note 10 “Commitments” for future commitment details). The obligation will be settled through monthly lease payments to the landlord which commenced on October 2015. To the extent that operating expenses for 350 Mission are material, the Company, as the deemed accounting owner, will record the operating expenses.

Business Combinations

Business Combinations	3 Months Ended
	Apr. 30, 2016
Business Combinations [Abstract]
Business Combinations	Business Combinations Steelbrick In February 2016, the Company acquired the outstanding stock of SteelBrick, Inc. (“SteelBrick”), a next generation quote-to-cash platform, delivered 100 percent natively on the Salesforce platform, which offers applications, or apps, for automating the entire deal close process - from generating quotes and configuring orders to collecting cash. The Company has included the financial results of SteelBrick in the consolidated financial statements from the date of acquisition, which have not been material to date. The costs associated with the acquisition were not material. The preliminary acquisition date fair value consideration transferred for SteelBrick was approximately $314.8 million , which consisted of the following (in thousands, except for share data): Fair Value Cash $ 1,698 Common stock (4,288,447 shares) 278,372 Fair value of stock options and restricted stock awards assumed 10,989 Fair value of pre-existing relationship 23,726 Total $ 314,785 The fair value of stock options assumed by the Company was determined using the Black-Scholes option pricing model. The share conversion ratio of 0.08 was applied to convert SteelBrick's outstanding equity awards for SteelBrick's common stock into equity awards for shares of the Company's common stock. The Company had a $13.9 million , or approximately six percent, noncontrolling equity investment in SteelBrick prior to the acquisition. The acquisition date fair value of the Company's previously held equity interest was approximately $23.7 million and is included in the measurement of the consideration transferred. The Company recognized a gain of approximately $9.8 million as a result of remeasuring its prior equity interest in SteelBrick held before the business combination. The gain is included in gains on sales of strategic investments on the consolidated statement of operations. The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands): Fair Value Cash and cash equivalents $ 59,296 Other current and noncurrent tangible assets 3,012 Customer contract asset, current and noncurrent 16,903 Intangible assets 49,160 Goodwill 217,986 Deferred revenue, current and noncurrent (8,479 ) Customer liability, current and noncurrent (9,949 ) Other liabilities, current and noncurrent (2,665 ) Deferred tax liability (10,479 ) Net assets acquired $ 314,785 The excess of purchase consideration over the fair value of net tangible and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible assets acquired, liabilities assumed and identifiable intangible assets are based on management's estimates and assumptions. The deferred tax liability established was primarily a result of the difference in the book basis and tax basis related to the identifiable intangible assets. The estimated fair values of assets acquired and liabilities assumed, specifically current and noncurrent income taxes payable and deferred taxes, may be subject to change as additional information is received and certain tax returns are finalized. Thus, the provisional measurements of fair value set forth above are subject to change. The Company expects to finalize the valuation as soon as practicable, but not later than one year from the acquisition date. The following table sets forth the components of identifiable intangible assets acquired (in thousands) and their estimated useful lives as of the date of acquisition. Fair Value Useful Life Developed technology $ 30,700 4 years Customer relationships 17,110 7 years Other purchased intangible assets 1,350 1 year Total intangible assets subject to amortization $ 49,160 The amount recorded for developed technology represents the estimated fair value of SteelBrick's quote-to-cash and billing technology. The amount recorded for customer relationships represents the fair values of the underlying relationship with SteelBrick customers. The goodwill balance is primarily attributed to the assembled workforce and expanded market opportunities when integrating SteelBrick's quote-to-cash technology with the Company's other offerings. The majority of the goodwill balance is not deductible for U.S. income tax purposes. The Company assumed unvested equity awards for shares of SteelBrick's common stock with a fair value of $39.6 million . Of the total consideration, $11.0 million was allocated to the consideration transferred and $28.6 million was allocated to future services and will be expensed over the remaining service periods on a straight-line basis. MetaMind In April 2016, the Company acquired MetaMind, Inc. (“MetaMind”) for approximately $32.8 million in cash, net of cash acquired. This amount includes amounts to be paid after an initial holdback period, and assumed equity awards. The primary reason for the acquisition was to extend the Company's intelligence in natural language processing and image recognition across all clouds. The Company has included the financial results of MetaMind in its consolidated financial statements from the date of acquisition, which have not been material to date. The costs associated with the acquisition were not material. In allocating the purchase consideration for MetaMind based on estimated fair values, the Company recorded $31.2 million of goodwill. The goodwill balance is not deductible for U.S. income tax purposes. The estimated fair values of assets acquired and liabilities assumed, specifically current and noncurrent income taxes payable and deferred taxes, may be subject to change as additional information is received and certain tax returns are finalized. Thus, the provisional measurements of fair value set forth above are subject to change. The Company expects to finalize the valuation as soon as practicable, but not later than one year from the acquisition date. The Company assumed unvested equity awards for shares of MetaMind's common stock with a fair value of $5.5 million . Of the total consideration, $0.5 million was allocated to the purchase consideration and $5.0 million was allocated to future services and will be expensed over the remaining service periods on a straight-line basis. The Company's chairman, who held a greater than ten percent ownership interest in MetaMind, received approximately $6.0 million in total proceeds, subject to customary escrow amounts, in connection with this acquisition. Other Business Combinations During the three months ended April 30, 2016 , the Company acquired two other companies for an aggregate of $41.6 million in cash, net of cash acquired, and has included the financial results of these companies in its consolidated financial statements from the respective dates of acquisition. These transactions, individually and in the aggregate, are not material to the Company. The costs associated with these acquisitions were not material. The Company accounted for these transactions as business combinations. In allocating the purchase consideration for each company based on estimated fair values, the Company recorded $30.6 million of goodwill. The goodwill balance associated with these transactions is not deductible for U.S. income tax purposes. The Company expects to finalize the valuation as soon as practicable, but not later than one year from the acquisition date.

Debt

Debt	3 Months Ended
	Apr. 30, 2016
Debt Disclosure [Abstract]
Debt	Debt Convertible Senior Notes Par Value Outstanding Equity Component Recorded at Issuance Liability Component of Par Value as of (in thousands) April 30, January 31, 0.25% Convertible Senior Notes due April 1, 2018 $ 1,150,000 $ 122,421 (1) $ 1,095,104 (2) $ 1,088,097 (2) ___________ (1) This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes. (2) In April 2015, the FASB issued ASU 2015-03 which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. The Company retrospectively adopted this standard for the prior period presented. In March 2013, the Company issued at par value $1.15 billion of 0.25% convertible senior notes (the “ 0.25% Senior Notes”, or the “Notes”) due April 1, 2018 , unless earlier purchased by the Company or converted. Interest is payable semi-annually, in arrears on April 1 and October 1 of each year. The 0.25% Senior Notes are governed by an indenture between the Company, as issuer, and U.S. Bank National Association, as trustee. The 0.25% Senior Notes are unsecured and do not contain any financial covenants or any restrictions on the payment of dividends, the incurrence of senior debt or other indebtedness, or the issuance or repurchase of securities by the Company. If converted, holders of the 0.25% Senior Notes will receive cash equal to the principal amount, and at the Company’s election, cash, shares of the Company’s common stock, or a combination of cash and shares, for any amounts in excess of the principal amounts. Certain terms of the conversion features of the 0.25% Senior Notes are as follows: Conversion Rate per $1,000 Par Value Initial Conversion Price per Share Convertible Date 0.25% Senior Notes 15.0512 $ 66.44 January 1, 2018 Throughout the term of the 0.25% Senior Notes, the conversion rate may be adjusted upon the occurrence of certain events, including any cash dividends. Holders of the 0.25% Senior Notes will not receive any cash payment representing accrued and unpaid interest upon conversion of a Note. Accrued but unpaid interest will be deemed to be paid in full upon conversion rather than canceled, extinguished or forfeited. Holders may convert the 0.25% Senior Notes under the following circumstances: • during any fiscal quarter, if, for at least 20 trading days during the 30 consecutive trading day period ending on the last trading day of the immediately preceding fiscal quarter, the last reported sales price of the Company’s common stock for such trading day is greater than or equal to 130% of the applicable conversion price on such trading day; • in certain situations, when the trading price of the 0.25% Senior Notes is less than 98% of the product of the sale price of the Company’s common stock and the conversion rate; • upon the occurrence of specified corporate transactions described under the 0.25% Senior Notes indenture, such as a consolidation, merger or binding share exchange; or • at any time on or after the convertible date noted above. Holders of the 0.25% Senior Notes have the right to require the Company to purchase with cash all or a portion of the Notes upon the occurrence of a fundamental change, such as a change of control, at a purchase price equal to 100% of the principal amount of the 0.25% Senior Notes plus accrued and unpaid interest. Following certain corporate transactions that constitute a change of control, the Company will increase the conversion rate for a holder who elects to convert the 0.25% Senior Notes in connection with such change of control. In accounting for the issuances of the 0.25% Senior Notes, the Company separated the 0.25% Senior Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the par value of the 0.25% Senior Notes as a whole. The excess of the principal amount of the liability component over its carrying amount (“debt discount”) is amortized to interest expense over the term of the 0.25% Senior Notes. The equity component is not remeasured as long as it continues to meet the conditions for equity classification. In accounting for the transaction costs related to the 0.25% Senior Notes issuance, the Company allocated the total amount incurred to the liability and equity components based on their relative values. Transaction costs attributable to the liability component are being amortized to expense over the terms of the 0.25% Senior Notes, and transaction costs attributable to the equity component were netted with the equity component in temporary stockholders’ equity and stockholders’ equity. The 0.25% Senior Notes consisted of the following (in thousands): As of April 30, January 31, Liability component : Principal (1) $ 1,150,000 $ 1,150,000 Less: debt discount, net (2) (48,753 ) (54,941 ) Less: debt issuance cost (3) (6,143 ) (6,962 ) Net carrying amount $ 1,095,104 $ 1,088,097 (1) The effective interest rate of the 0.25% Senior Notes is 2.53% . The interest rate is based on the interest rates of similar liabilities at the time of issuance that did not have an associated convertible feature. (2) Included in the consolidated balance sheets within Convertible 0.25% Senior Notes (which is classified as a noncurrent liability) and is amortized over the life of the 0.25% Senior Notes using the effective interest rate method. (3) In April 2015, the FASB issued ASU 2015-03 which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. The Company retrospectively adopted this standard for the prior period presented. The total estimated fair value of the Company’s 0.25% Senior Notes at April 30, 2016 was $1.5 billion . The fair value was determined based on the closing trading price per $100 of the 0.25% Senior Notes as of the last day of trading for the first quarter of fiscal 2017 . Based on the closing price of the Company’s common stock of $75.80 on April 29, 2016 , the if-converted value of the 0.25% Senior Notes exceeded their principal amount by approximately $162.0 million . Based on the terms of the 0.25% Senior Notes, the Senior Notes were not convertible for the three months ended April 30, 2016 . Note Hedges To minimize the impact of potential economic dilution upon conversion of the Notes, the Company entered into convertible note hedge transactions with respect to its common stock (the “ 0.25% Note Hedges”). (in thousands, except for shares) Date Purchase Shares 0.25% Note Hedges March 2013 $ 153,800 17,308,880 The 0.25% Note Hedges cover shares of the Company’s common stock at a strike price that corresponds to the initial conversion price of the 0.25% Senior Notes, also subject to adjustment, and are exercisable upon conversion of the Notes. The 0.25% Note Hedges will expire upon the maturity of the 0.25% Senior Notes. The 0.25% Note Hedges are intended to reduce the potential economic dilution upon conversion of the 0.25% Senior Notes in the event that the market value per share of the Company’s common stock, as measured under the 0.25% Senior Notes, at the time of exercise is greater than the conversion price of the 0.25% Senior Notes. The 0.25% Note Hedges are separate transactions and are not part of the terms of the 0.25% Senior Notes. Holders of the 0.25% Senior Notes will not have any rights with respect to the 0.25% Note Hedges. The 0.25% Note Hedges do not impact earnings per share. Warrants Date Proceeds (in thousands) Shares Strike Price 0.25% Warrants March 2013 $ 84,800 17,308,880 $ 90.40 In March 2013, the Company also entered into a warrants transaction (the “ 0.25% Warrants”), whereby the Company sold warrants to acquire, subject to anti-dilution adjustments, shares of the Company’s common stock. The 0.25% Warrants were anti-dilutive for the periods presented. The 0.25% Warrants are separate transactions entered into by the Company and are not part of the terms of the 0.25% Senior Notes or the 0.25% Note Hedges. Holders of the 0.25% Senior Notes and 0.25% Note Hedges will not have any rights with respect to the 0.25% Warrants. Revolving Credit Facility Since October 2014, the Company maintains a Credit Agreement with Wells Fargo, N.A. and certain other institutional lenders that provides for a $650.0 million unsecured revolving credit facility that matures in October 2019 (the “Credit Facility”). The Borrowings under the Credit Facility bear interest, at the Company’s option at either a base rate, as defined in the Credit Agreement, plus a margin of 0.00% to 0.75% or LIBOR plus a margin of 1.00% to 1.75% . The Company is obligated to pay ongoing commitment fees at a rate between 0.125% and 0.25% . Such interest rate margins and commitment fees are based on the Company’s consolidated leverage ratio for the preceding four fiscal quarter periods. Interest and the commitment fees are payable in arrears quarterly. The Company may use amounts borrowed under the Credit Facility for working capital, capital expenditures and other general corporate purposes, including permitted acquisitions. Subject to certain conditions stated in the Credit Agreement, the Company may borrow amounts under the Credit Facility at any time during the term of the Credit Agreement. The Company may also prepay borrowings under the Credit Agreement, in whole or in part, at any time without premium or penalty, subject to certain conditions, and amounts repaid or prepaid may be reborrowed. The Credit Agreement contains certain customary affirmative and negative covenants, including a consolidated leverage ratio covenant, a consolidated interest coverage ratio covenant, a limit on the Company’s ability to incur additional indebtedness, dispose of assets, make certain acquisition transactions, pay dividends or distributions, and certain other restrictions on the Company’s activities each defined specifically in the Credit Agreement. The Company was in compliance with the Credit Agreement’s covenants as of April 30, 2016 . There are currently no outstanding borrowings held under the Credit Facility as of April 30, 2016 . The Company continues to pay a fee of 0.15% on the undrawn amount of the Credit Facility. Loan Assumed on 50 Fremont The Company assumed a $200.0 million loan with the acquisition of 50 Fremont (the “Loan”). The Loan bears an interest rate of 3.75% per annum and is due in June 2023. The Loan initially requires interest only payments. Beginning in fiscal year 2019, principal and interest payments are required, with the remaining principal due at maturity. For the three months ended April 30, 2016 , total interest expense recognized was $ 1.9 million . The Loan can be prepaid at any time subject to a yield maintenance fee. The agreement governing the Loan contains certain customary affirmative and negative covenants that the Company was in compliance with as of April 30, 2016 . Interest Expense on Convertible Senior Notes, Revolving Credit Facility and Loan Secured by 50 Fremont The following table sets forth total interest expense recognized related to the 0.25% Senior Notes, the Credit Facility and the Loan prior to capitalization of interest (in thousands): Three Months Ended April 30, 2016 2015 Contractual interest expense $ 2,814 $ 3,350 Amortization of debt issuance costs 1,028 1,018 Amortization of debt discount 6,226 6,059 $ 10,068 $ 10,427

Other Balance Sheet Accounts

Other Balance Sheet Accounts	3 Months Ended
	Apr. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other Balance Sheet Accounts	Other Balance Sheet Accounts Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets consisted of the following (in thousands): As of April 30, January 31, Prepaid income taxes 24,329 22,044 Other taxes receivable 28,117 27,341 Prepaid expenses and other current assets 254,179 201,209 $ 306,625 $ 250,594 Capitalized Software, net Capitalized software consisted of the following (in thousands): As of April 30, January 31, Capitalized internal-use software development costs, net of accumulated amortization of $201,292 and $186,251, respectively $ 131,376 $ 123,065 Acquired developed technology, net of accumulated amortization of $505,147 and $481,118, respectively 275,654 261,193 $ 407,030 $ 384,258 Capitalized internal-use software amortization expense totaled $15.0 million and $11.3 million for the three months ended April 30, 2016 and 2015 , respectively. Acquired developed technology amortization expense totaled $24.0 million and $21.9 million for the three months ended April 30, 2016 and 2015 , respectively. The Company capitalized $1.8 million and $1.6 million of stock-based expenses related to capitalized internal-use software development for the three months ended April 30, 2016 and 2015 , respectively. Goodwill Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Goodwill amounts are not amortized, but rather tested for impairment at least annually during the fourth quarter. Goodwill consisted of the following (in thousands): Balance as of January 31, 2016 $ 3,849,937 Steelbrick 217,986 MetaMind 31,242 Other business combinations 30,554 Finalization of acquisition date fair values (63 ) Balance as of April 30, 2016 $ 4,129,656 Other Assets, net Other assets consisted of the following (in thousands): As of April 30, January 31, Deferred income taxes, noncurrent, net $ 17,597 $ 15,986 Long-term deposits 23,650 19,469 Purchased intangible assets, net of accumulated amortization of $228,704 and $212,248, respectively 267,722 258,580 Acquired intellectual property, net of accumulated amortization of $24,186 and $22,439, respectively 10,564 10,565 Other (1) 89,652 66,310 $ 409,185 $ 370,910 (1) In April 2015, the FASB issued ASU 2015-03 which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. The Company retrospectively adopted this standard for the prior period presented, which resulted in an adjustment of $7.9 million to Other. Purchased intangible assets amortization expense for the three months ended April 30, 2016 and 2015 was $16.5 million and $20.0 million , respectively. Acquired intellectual property amortization expense at both three months ended April 30, 2016 and 2015 was $1.7 million . Accounts Payable, Accrued Expenses and Other Liabilities Accounts payable, accrued expenses and other liabilities consisted of the following (in thousands): As of April 30, January 31, Accounts payable $ 54,583 $ 71,481 Accrued compensation 386,410 554,502 Accrued other liabilities 433,631 454,287 Accrued income and other taxes payable 154,550 205,781 Accrued professional costs 30,095 33,814 Accrued rent 15,789 14,071 Financing obligation - leased facility, current (2) 18,139 15,402 $ 1,093,197 $ 1,349,338 Other Noncurrent Liabilities Other noncurrent liabilities consisted of the following (in thousands): As of April 30, January 31, Deferred income taxes and income taxes payable $ 85,579 $ 85,996 Financing obligation - leased facility (2) 202,246 196,711 Long-term lease liabilities and other 551,900 550,358 $ 839,725 $ 833,065 (2) As of January 31, 2016, 350 Mission was in construction. In March 2016, construction was completed on the building.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Apr. 30, 2016
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity The Company maintains the following stock plans: the ESPP, the 2013 Equity Incentive Plan and the 2014 Inducement Equity Incentive Plan (the “2014 Inducement Plan”). The expiration of the 1999 Stock Option Plan (“1999 Plan”) in fiscal 2010 did not affect awards outstanding, which continue to be governed by the terms and conditions of the 1999 Plan. As of April 30, 2016 , $93.9 million has been withheld on behalf of employees for future purchases under the ESPP and is recorded in accounts payable, accrued expenses and other liabilities. Prior to February 1, 2006, options issued under the Company’s stock option plans generally had a term of 10 years. From February 1, 2006 through July 2013, options issued had a term of five years. After July 2013, options issued have a term of seven years. During fiscal 2016, the Company granted a performance-based restricted stock unit award to the Chairman of the Board and Chief Executive Officer subject to vesting based on a performance-based condition and a service-based condition. At the end of the three year service period based on the Company's share price performance, as it relates to the performance condition, these performance-based restricted stock units will vest simultaneously. Stock activity excluding the ESPP is as follows: Options Outstanding Shares Available for Grant Outstanding Stock Options Weighted- Average Exercise Price Aggregate Intrinsic Value Balance as of January 31, 2016 46,879,908 26,258,798 $ 56.26 Increase in shares authorized: 2013 Equity Incentive Plan 80,332 2014 Inducement Equity Incentive Plan 11,049 Assumed equity plans 584,392 Options granted under all plans (867,292 ) 867,292 40.58 Restricted stock activity (1,821,324 ) Performance restricted stock units 0 Stock grants to board and advisory board members (44,026 ) Exercised 0 (854,362 ) 38.23 Plan shares expired (28,916 ) Canceled 250,573 (250,573 ) 67.73 Balance as of April 30, 2016 45,044,696 26,021,155 $ 56.22 $ 538,367,465 Vested or expected to vest 23,947,836 $ 55.11 $ 519,312,755 Exercisable as of April 30, 2016 10,372,672 $ 43.12 $ 338,995,305 The total intrinsic value of the options exercised during the three months ended April 30, 2016 and 2015 was $28.6 million and $113.3 million , respectively. The intrinsic value is the difference between the current market value of the stock and the exercise price of the stock option. The weighted-average remaining contractual life of vested and expected to vest options is approximately 4.7 years. As of April 30, 2016 , options to purchase 10,372,672 shares were vested at a weighted average exercise price of $43.12 per share and had a remaining weighted-average contractual life of approximately 3.3 years. The total intrinsic value of these vested options as of April 30, 2016 was $339.0 million . The following table summarizes information about stock options outstanding as of April 30, 2016 : Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding Weighted- Average Remaining Contractual Life (Years) Weighted- Average Exercise Price Number of Shares Weighted- Average Exercise Price $0.86 to $37.95 4,461,075 2.3 $ 27.45 3,691,607 $ 28.16 $38.03 to $52.14 2,480,093 2.0 39.87 1,934,518 39.57 $52.30 3,684,201 4.6 52.30 2,012,682 52.30 $53.60 to $57.79 1,414,340 5.1 55.31 514,062 55.35 $59.34 6,138,145 5.6 59.34 2,015,280 59.34 $59.37 to $77.86 2,326,108 6.2 68.62 204,523 65.72 $80.99 5,517,193 6.6 80.99 0 0.00 26,021,155 4.8 $ 56.22 10,372,672 $ 43.12 Restricted stock activity is as follows: Restricted Stock Outstanding Outstanding Weighted- Average Exercise Price Aggregate Intrinsic Value Balance as of January 31, 2016 21,294,585 $ 0.001 Granted- restricted stock units and awards 1,468,220 0.001 Canceled (512,280 ) 0.001 Vested and converted to shares (1,840,948 ) 0.001 Balance as of April 30, 2016 20,409,577 $ 0.001 $ 1,547,045,937 Expected to vest 17,223,868 $ 1,305,569,194 The restricted stock, which upon vesting entitles the holder to one share of common stock for each share of restricted stock, has an exercise price of $0.001 per share, which is equal to the par value of the Company’s common stock, and generally vests over 4 years. The weighted-average grant date fair value of the restricted stock issued for the three months ended April 30, 2016 and 2015 was $69.29 and $67.17 , respectively. Common Stock The following number of shares of common stock were reserved and available for future issuance at April 30, 2016 : Options outstanding 26,021,155 Restricted stock awards and units and performance stock units outstanding 20,409,577 Stock available for future grant: 2013 Equity Incentive Plan 44,462,309 2014 Inducement Equity Incentive Plan 446,533 Amended and Restated 2004 Employee Stock Purchase Plan 6,844,796 Acquired equity plans 135,854 Convertible Senior Notes 17,308,880 Warrants 17,308,880 132,937,984

Income Taxes

Income Taxes	3 Months Ended
	Apr. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Effective Tax Rate The Company computes its year-to-date provision for income taxes by applying the estimated annual effective tax rate to year to date pretax income or loss and adjusts the provision for discrete tax items recorded in the period. For the three months ended April 30, 2016 , the Company reported a tax benefit of $1.6 million on a pretax income of $37.2 million , which resulted in a negative effective tax rate of 4 percent . The Company recorded a net tax benefit due to income taxes in profitable jurisdictions outside of the United States offset by a discrete tax benefit from a partial release of the valuation allowance in connection with certain acquisitions. The net deferred tax liability from the acquisitions provided a source of additional income to support the realizability of the Company's pre-existing deferred tax assets and as a result, the Company released a portion of its valuation allowance. As described in Note 1 “Summary of Business and Significant Accounting Policies,” the Company early adopted ASU 2016-09 in the three months ended April 30, 2016. As a result of adopting ASU 2016-09 and the Company's current valuation allowance position, the Company did not record a current tax expense associated with the United States jurisdiction. For the three months ended April 30, 2015 , the Company reported a tax provision of $14.0 million on a pretax income of $18.1 million , which resulted in an effective tax rate of 77 percent . The tax provision recorded was primarily related to income taxes in profitable jurisdictions outside the United States. Tax Benefits Related to Stock-Based Compensation The income tax benefit related to stock-based compensation was $51.4 million and $43.7 million for three months ended April 30, 2016 and 2015 , respectively, the majority of which was not recognized as a result of the valuation allowance. Unrecognized Tax Benefits and Other Considerations The Company records liabilities related to its uncertain tax positions. Tax positions for the Company and its subsidiaries are subject to income tax audits by multiple tax jurisdictions throughout the world. Certain prior year tax returns are currently being examined by various taxing authorities in countries including the United States, Canada, France, Switzerland and the United Kingdom. The Company believes that it has provided adequate reserves for its income tax uncertainties in all open tax years. However, the outcome of the tax audits cannot be predicted with certainty. If any issues addressed in the Company's tax audits are resolved in a manner inconsistent with management's expectations, the Company could adjust its provision for income taxes in the future. Based on the information to-date, as some of the ongoing examinations are completed and tax positions in these tax years meet the conditions of being effectively settled or as applicable statute of limitations lapse, the Company anticipates it is reasonably possible that a decrease of unrecognized tax benefits up to approximately $15.0 million may occur in the next 12 months.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Apr. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted-average number of common shares outstanding for the fiscal period. Diluted earnings/loss per share is computed by giving effect to all potential weighted average dilutive common stock, including options, restricted stock units, warrants and the convertible senior notes. The dilutive effect of outstanding awards and convertible securities is reflected in diluted earnings per share by application of the treasury stock method. A reconciliation of the denominator used in the calculation of basic and diluted earnings per share is as follows (in thousands): Three Months Ended April 30, 2016 2015 Numerator: Net income $ 38,759 $ 4,092 Denominator: Weighted-average shares outstanding for basic income per share 677,514 653,809 Effect of dilutive securities: Convertible senior notes 945 0 Employee stock awards 8,340 10,501 Warrants 0 0 Adjusted weighted-average shares outstanding and assumed conversions for diluted income per share 686,799 664,310 The weighted-average number of shares outstanding used in the computation of diluted earnings per share does not include the effect of the following potential outstanding common stock. The effects of these potentially outstanding shares were not included in the calculation of diluted earnings per share because the effect would have been anti-dilutive (in thousands): Three Months Ended April 30, 2016 2015 Employee stock awards 21,321 8,801 Convertible senior notes 0 17,309 Warrants 17,309 17,309

Commitments

Commitments	3 Months Ended
	Apr. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments Letters of Credit As of April 30, 2016 , the Company had a total of $83.8 million in letters of credit outstanding substantially in favor of certain landlords for office space. These letters of credit renew annually and expire at various dates through December 2030. Leases The Company leases facilities space and certain fixed assets under non-cancelable operating and capital leases with various expiration dates. As of April 30, 2016 , the future minimum lease payments under non-cancelable operating and capital leases are as follows (in thousands): Capital Operating Financing Obligation -Leased Facility(1) Fiscal Period: Remaining nine months of fiscal 2017 $ 50,960 $ 287,083 $ 14,518 Fiscal 2018 122,765 351,971 21,437 Fiscal 2019 115,797 299,254 21,881 Fiscal 2020 201,579 239,804 22,325 Fiscal 2021 37 223,280 22,770 Thereafter 0 1,233,948 233,927 Total minimum lease payments 491,138 $ 2,635,340 $ 336,858 Less: amount representing interest (42,438 ) Present value of capital lease obligations $ 448,700 ______________ (1) Total Financing Obligation, Building -Leased Facility noted above represents the total obligation on the lease agreement including amounts allocated to interest noted in Note 3 “Property and Equipment.” As of April 30, 2016 , $220.3 million of the total obligation noted above was recorded to Financing obligation, building - leased facility, of which the current portion is included in "Accounts payable, accrued expenses and other liabilities" and the non-current portion is included in “Other noncurrent liabilities” on the consolidated balance sheets. The Company’s agreements for the facilities and certain services provide the Company with the option to renew. The Company’s future contractual obligations would change if the Company exercised these options. The terms of the lease agreements provide for rental payments on a graduated basis. The Company recognizes rent expense on a straight-line basis over the lease period and has accrued for rent expense incurred but not paid. Of the total operating lease commitment balance of $2.6 billion , approximately $2.3 billion is related to facilities space. The remaining commitment amount is related to computer equipment and furniture and fixtures. Other Purchase Commitments In April 2016, the Company entered into an agreement with a third party provider for certain infrastructure services for a period of four years . The agreement provides that the Company will pay $70.0 million in fiscal 2017, $96.0 million in fiscal 2018, $108.0 million in fiscal 2019 and $126.0 million in fiscal 2020.

Legal Proceedings and Claims

Legal Proceedings and Claims	3 Months Ended
	Apr. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings and Claims	Legal Proceedings and Claims In the ordinary course of business, the Company is or may be involved in various legal proceedings and claims related to alleged infringement of third-party patents and other intellectual property rights, commercial, corporate and securities, labor and employment, class actions, wage and hour, and other claims. The Company has been, and may in the future be put on notice and/or sued by third parties for alleged infringement of their proprietary rights, including patent infringement. During fiscal 2015, the Company received a communication from a large technology company alleging that the Company infringed certain of its patents. No litigation has been filed to date. There can be no assurance that this claim will not lead to litigation in the future. The resolution of this claim is not expected to have a material adverse effect on the Company's financial condition, but it could be material to operating results or cash flows or both of a particular quarter. In general, the resolution of a legal matter could prevent the Company from offering its service to others, could be material to the Company’s financial condition or cash flows, or both, or could otherwise adversely affect the Company’s operating results. The Company makes a provision for a liability relating to legal matters when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, estimated settlements, legal rulings, advice of legal counsel and other information and events pertaining to a particular matter. In management’s opinion, resolution of all current matters is not expected to have a material adverse impact on the Company’s consolidated results of operations, cash flows or financial position. However, depending on the nature and timing of any such dispute, an unfavorable resolution of a matter could materially affect the Company’s future results of operations or cash flows, or both, of a particular quarter.

Related-Party Transactions

Related-Party Transactions	3 Months Ended
	Apr. 30, 2016
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party Transactions In January 1999, the Salesforce.com Foundation, also referred to as the Foundation, was chartered on an idea of leveraging the Company’s people, technology, and resources to help improve communities around the world. The Company calls this integrated philanthropic approach the 1-1-1 model. Beginning in 2008, Salesforce.org, which is a non-profit public benefit corporation, was established to resell the Company's services to nonprofit organizations and certain higher education organizations. The Company’s chairman is the chairman of both the Foundation and Salesforce.org. The Company’s chairman holds one of the three Foundation board seats. The Company’s chairman, one of the Company’s employees and one of the Company’s board members hold three of Salesforce.org’s nine board seats. The Company does not control the Foundation’s or Salesforce.org's activities, and accordingly, the Company does not consolidate either of the related entities' statement of activities with its financial results. Since the Foundation’s and Salesforce.org’s inception, the Company has provided at no charge certain resources to those entities employees such as office space, furniture, equipment, facilities, services, and other resources. The value of these items was approximately $0.8 million for the three months ended April 30, 2016 . The resource sharing agreement was amended in August 2015 to include resources outside of the United States and is more explicit about the types of resources that the Company will provide. Additionally, the Company has donated subscriptions of the Company’s services to other qualified non-profit organizations. The Company also allows Salesforce.org to resell the Company’s service to non-profit organizations and certain education entities. The Company does not charge Salesforce.org for these subscriptions, therefore revenue from subscriptions provided to non-profit organizations is donated back to the community through charitable grants made by the Foundation and Salesforce.org. The reseller agreement was amended in August 2015 to include additional customer segments and certain customers outside the U.S. and in October 2015 to add an addendum with model clauses for the processing of personal data transferred from the European Economic Area. The value of the subscriptions pursuant to reseller agreements was approximately $27.8 million for the three months ended April 30, 2016 . The Company plans to continue these programs. As described in Note 4 “Business Combinations,” the Company's chairman held an ownership interest in an acquisition that was completed by the Company during the three months ended April 30, 2016 .

Summary of Business and Signi21

Summary of Business and Significant Accounting Policies (Policies)	3 Months Ended
	Apr. 30, 2016
Accounting Policies [Abstract]
Fiscal Year	Fiscal Year The Company’s fiscal year ends on January 31. References to fiscal 2017, for example, refer to the fiscal year ending January 31, 2017 .
Basis of Presentation	Basis of Presentation The accompanying consolidated balance sheet as of April 30, 2016 and the consolidated statements of operations, the consolidated statements of comprehensive income (loss) and the consolidated statements of cash flows for the three months ended April 30, 2016 and 2015 , respectively, are unaudited. The consolidated balance sheet data as of January 31, 2016 was derived from the audited consolidated financial statements that are included in the Company’s fiscal 2016 Form 10-K, which was filed with the Securities and Exchange Commission (the “SEC”) on March 7, 2016 . The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in the Company’s fiscal 2016 Form 10-K. The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the financial information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of the Company’s management, the unaudited consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements in the Form 10-K, and include all adjustments necessary for the fair presentation of the Company’s balance sheet as of April 30, 2016 , and its results of operations, including its comprehensive income (loss), and its cash flows for the three months ended April 30, 2016 and 2015 . All adjustments are of a normal recurring nature. The results for the three months ended April 30, 2016 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2017 .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the Company’s consolidated financial statements and notes thereto. Significant estimates and assumptions made by management include the determination of: • the best estimate of selling price of the deliverables included in multiple deliverable revenue arrangements, • the fair value of assets acquired and liabilities assumed for business combinations, • the recognition, measurement and valuation of current and deferred income taxes, • the fair value of convertible notes, • the fair value of stock awards issued and related forfeiture rates, • the useful lives of intangible assets, property and equipment and building and structural components, and • the valuation of strategic investments and the determination of other-than-temporary impairments. Actual results could differ materially from those estimates. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the result of which forms the basis for making judgments about the carrying values of assets and liabilities.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Segments	Segments The Company operates as one operating segment. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, who is the chief executive officer, in deciding how to allocate resources and assessing performance. Over the past few years, the Company has completed several acquisitions. These acquisitions have allowed the Company to expand its offerings, presence and reach in various market segments of the enterprise cloud computing market. While the Company has offerings in multiple enterprise cloud computing market segments, the Company’s business operates in one operating segment because all of the Company's offerings operate on a single platform and are deployed in an identical way, and the Company’s chief operating decision maker evaluates the Company’s financial information and resources and assesses the performance of these resources on a consolidated basis. Since the Company operates in one operating segment, all required financial segment information can be found in the consolidated financial statements.
Concentrations of Credit Risk and Significant Customers	Concentrations of Credit Risk and Significant Customers The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities and trade accounts receivable. Collateral is not required for accounts receivable. The Company maintains an allowance for doubtful accounts receivable balances. This allowance is 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 delinquent accounts.
Revenue Recognition	Revenue Recognition The Company derives its revenues from two sources: (1) subscription revenues, which are comprised of subscription fees from customers accessing the Company’s enterprise cloud computing services and from customers paying for additional support beyond the standard support that is included in the basic subscription fees; and (2) related professional services such as process mapping, project management, implementation services and other revenue. “Other revenue” consists primarily of training fees. The Company commences revenue recognition when all of the following conditions are satisfied: • there is persuasive evidence of an arrangement; • the service has been or is being provided to the customer; • the collection of the fees is reasonably assured; and • the amount of fees to be paid by the customer is fixed or determinable. The Company’s subscription service arrangements are non-cancelable and do not contain refund-type provisions. Subscription and Support Revenues Subscription and support revenues are recognized ratably over the contract terms beginning on the commencement date of each contract, which is the date the Company’s service is made available to customers. Amounts that have been invoiced are recorded in accounts receivable and in deferred revenue or revenue, depending on whether the revenue recognition criteria have been met. Professional Services and Other Revenues The Company’s professional services contracts are either on a time and material or fixed fee basis. When these services are not combined with subscription revenues as a single unit of accounting, as discussed below, these revenues are recognized as the services are rendered for time and material contracts, and when the milestones are achieved and accepted by the customer for fixed price contracts. Training revenues are recognized as the services are performed. Multiple Deliverable Arrangements The Company enters into arrangements with multiple deliverables that generally include multiple subscriptions, premium support and professional services. If the deliverables have standalone value upon delivery, the Company accounts for each deliverable separately. Subscription services have standalone value as such services are often sold separately. In determining whether professional services have standalone value, the Company considers the following factors for each professional services agreement: availability of the services from other vendors, the nature of the professional services, the timing of when the professional services contract was signed in comparison to the subscription service start date and the contractual dependence of the subscription service on the customer’s satisfaction with the professional services work. To date, the Company has concluded that all of the professional services included in multiple deliverable arrangements executed have standalone value. Multiple deliverables included in an arrangement are separated into different units of accounting and the arrangement consideration is allocated to the identified separate units based on a relative selling price hierarchy. The Company determines the relative selling price for a deliverable based on its vendor-specific objective evidence of selling price (“VSOE”), if available, or its best estimate of selling price (“BESP”), if VSOE is not available. The Company has determined that third-party evidence of selling price (“TPE”) is not a practical alternative due to differences in its service offerings compared to other parties and the availability of relevant third-party pricing information. The amount of revenue allocated to delivered items is limited by contingent revenue, if any. For certain professional services, the Company has established VSOE as a consistent number of standalone sales of these deliverables have been priced within a reasonably narrow range. The Company has not established VSOE for its subscription services due to lack of pricing consistency, the introduction of new services and other factors. Accordingly, the Company uses its BESP to determine the relative selling price for its subscription services. The Company determines BESP by considering its overall pricing objectives and market conditions. Significant pricing practices taken into consideration include the Company’s discounting practices, the size and volume of the Company’s transactions, the customer demographic, the geographic area where services are sold, price lists, its go-to-market strategy, historical standalone sales and contract prices. The determination of BESP is made through consultation with and approval by the Company’s management, taking into consideration the go-to-market strategy. As the Company’s go-to-market strategies evolve, the Company may modify its pricing practices in the future, which could result in changes in relative selling prices, including both VSOE and BESP.
Deferred Revenue	Deferred Revenue The deferred revenue balance does not represent the total contract value of annual or multi-year, non-cancelable subscription agreements. Deferred revenue primarily consists of billings or payments received in advance of revenue recognition from subscription services described above and is recognized as the revenue recognition criteria are met. The Company generally invoices customers in annual installments. The deferred revenue balance is influenced by several factors, including seasonality, the compounding effects of renewals, invoice duration, invoice timing, size and new business linearity within the quarter. Deferred revenue that will be recognized during the succeeding twelve month period is recorded as current deferred revenue and the remaining portion is recorded as noncurrent.
Deferred Commissions	Deferred Commissions Deferred commissions are the incremental costs that are directly associated with non-cancelable subscription contracts with customers and consist of sales commissions paid to the Company’s direct sales force. The commissions are deferred and amortized over the non-cancelable terms of the related customer contracts, which are typically 12 to 36 months . The commission payments are paid in full the month after the customer’s service commences and are a direct and incremental cost of the revenue arrangements. The deferred commission amounts are recoverable through the future revenue streams under the non-cancelable customer contracts. The Company believes this is the preferable method of accounting as the commission charges are so closely related to the revenue from the non-cancelable customer contracts that they should be recorded as an asset and charged to expense over the same period that the subscription revenue is recognized. Amortization of deferred commissions is included in marketing and sales expense in the accompanying consolidated statements of operations.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents are stated at fair value.
Marketable Securities	Marketable Securities Management determines the appropriate classification of marketable securities at the time of purchase and reevaluates such determination at each balance sheet date. Securities are classified as available for sale and are carried at fair value, with the change in unrealized gains and losses, net of tax, reported as a separate component on the consolidated statements of comprehensive income (loss). Fair value is determined based on quoted market rates when observable or utilizing data points that are observable, such as quoted prices, interest rates and yield curves. Declines in fair value judged to be other-than-temporary on securities available for sale are included as a component of investment income. In order to determine whether a decline in value is other-than-temporary, the Company evaluates, among other factors: the duration and extent to which the fair value has been less than the carrying value and its intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in fair value. The cost of securities sold is based on the specific-identification method. Interest on securities classified as available for sale is also included as a component of investment income.
Fair Value Measurement	Fair Value Measurement The Company measures its cash equivalents, marketable securities and foreign currency derivative contracts at fair value. The additional disclosures regarding the Company’s fair value measurements are included in Note 2 “Investments.”
Property and Equipment	Property and Equipment Property and equipment are stated at cost. Depreciation is calculated on a straight-line basis over the estimated useful lives of those assets as follows: Computers, equipment and software 3 to 9 years Furniture and fixtures 5 years Leasehold improvements Shorter of the estimated lease term or 10 years Building and structural components Average weighted useful life of 32 years Building- leased facility 27 years Building improvements 10 years When assets are retired or otherwise disposed of, the cost and accumulated depreciation and amortization are removed from their respective accounts and any loss on such retirement is reflected in operating expenses.
Capitalized Internal-Use Software Costs	Capitalized Internal-Use Software Costs The Company capitalizes costs related to its enterprise cloud computing services and certain projects for internal use incurred during the application development stage. Costs related to preliminary project activities and post implementation activities are expensed as incurred. Internal-use software is amortized on a straight-line basis over its estimated useful life, which is generally three to five years. Management evaluates the useful lives of these assets on an annual basis and tests for impairment whenever events or changes in circumstances occur that could impact the recoverability of these assets.
Goodwill and Intangible Assets Impairment Assessments	Goodwill and Intangible Assets Impairment Assessments The Company evaluates and tests the recoverability of its goodwill for impairment at least annually during the fourth quarter or more often if and when circumstances indicate that goodwill may not be recoverable. Intangible assets are amortized over their useful lives. Each period the Company evaluates the estimated remaining useful life of its intangible assets and whether events or changes in circumstances warrant a revision to the remaining period of amortization. The carrying amounts of these assets are periodically reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of these assets may not be recoverable. Recoverability of these assets is measured by comparison of the carrying amount of each asset to the future undiscounted cash flows the asset is expected to generate. If the undiscounted cash flows used in the test for recoverability are less than the carrying amount of these assets, then the carrying amount of such assets is reduced to fair value.
Long- Lived Assets and Impairment Assessment	Long-Lived Assets and Impairment Assessment The Company evaluates long-lived assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets may not be recoverable. This includes but is not limited to significant adverse changes in business climate, market conditions, or other events that indicate an asset's carrying amount may not be recoverable. If such review indicates that the carrying amount of long-lived assets is not recoverable, the carrying amount of such assets is reduced to fair value.
Business Combinations	Business Combinations The Company uses its best estimates and assumptions to accurately assign fair value to the tangible and intangible assets acquired and liabilities assumed at the acquisition date. The Company’s estimates are inherently uncertain and subject to refinement. During the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed, with the corresponding offset to goodwill. In addition, uncertain tax positions and tax-related valuation allowances are initially established in connection with a business combination as of the acquisition date. The Company continues to collect information and reevaluates these estimates and assumptions quarterly and records any adjustments to the Company’s preliminary estimates to goodwill provided that the Company is within the measurement period. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Company’s consolidated statements of operations. In the event that the Company enters into a business combination with an entity in which the Company previously held a strategic investment, significant gains or losses will be disclosed separately within the statements of operations.
Leases and Asset Retirement Obligations	Leases and Asset Retirement Obligations The Company categorizes leases at their inception as either operating or capital leases. In certain lease agreements, the Company may receive rent holidays and other incentives. The Company recognizes lease costs on a straight-line basis once control of the space is achieved, without regard to deferred payment terms such as rent holidays that defer the commencement date of required payments. Additionally, incentives received are treated as a reduction of costs over the term of the agreement. The Company establishes assets and liabilities for the present value of estimated future costs to retire long-lived assets at the termination or expiration of a lease. Such assets are depreciated over the lease period to operating expense. In the event the Company is the deemed owner for accounting purposes during construction, the Company records assets and liabilities for the estimated construction costs incurred under build-to-suit lease arrangements to the extent it is involved in the construction of structural improvements or takes construction risk prior to commencement of a lease. The Company additionally has entered into subleases for unoccupied leased office space. Losses are recognized in the period the sublease is executed. Any sublease payments received in excess of the straight-line rent payments for the sublease are recorded in other income (expense).
Accounting for Stock-Based Compensation	The Company estimated its future stock price volatility considering both its observed option-implied volatilities and its historical volatility calculations. Management believes this is the best estimate of the expected volatility over the expected life of its stock options and stock purchase rights. The estimated life for the stock options was based on an analysis of historical exercise activity. ESPP assumptions and the related fair value per share table will only be disclosed in the three month period in which there is ESPP activity, such as an ESPP purchase. The Company's ESPP Plan allows for two purchases during the year. The estimated life of the ESPP will be based on the two purchase periods within each offering period. The risk-free interest rate is based on the rate for a U.S. government security with the same estimated life at the time of the option grant and the stock purchase rights. Accounting for Stock-Based Expense The Company recognizes stock-based expenses related to stock options and restricted stock awards on a straight-line basis over the requisite service period of the awards, which is generally the vesting term of four years . The aggregate stock compensation remaining to be amortized to costs and expenses will be recognized over a weighted average period of 2.2 years . The Company recognizes stock-based expenses related to shares issued pursuant to its Amended and Restated 2004 Employee Stock Purchase Plan (“ESPP” or “2004 Employee Stock Purchase Plan”) on a straight-line basis over the offering period, which is 12 months . Stock-based expenses are recognized net of estimated forfeiture activity. The estimated forfeiture rate applied is based on historical forfeiture rates. The Company does not anticipate paying any cash dividends in the foreseeable future and therefore uses an expected dividend yield of zero in the option pricing model.
Income Taxes	Income Taxes The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on temporary differences between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws is recognized in the consolidated statement of operations in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are more likely than not expected to be realized based on the weighting of positive and negative evidence. Future realization of deferred tax assets ultimately depends on the existence of sufficient taxable income of the appropriate character (for example, ordinary income or capital gain) within the carryback or carryforward periods available under the applicable tax law. The Company regularly reviews the deferred tax assets for recoverability based on historical taxable income, projected future taxable income, the expected timing of the reversals of existing temporary differences and tax planning strategies. The Company’s judgments regarding future profitability may change due to many factors, including future market conditions and the ability to successfully execute its business plans and/or tax planning strategies. Should there be a change in the ability to recover deferred tax assets, the tax provision would increase or decrease in the period in which the assessment is changed. The Company’s tax positions are subject to income tax audits by multiple tax jurisdictions throughout the world. The Company recognizes the tax benefit of an uncertain tax position only if it is more likely than not that the position is sustainable upon examination by the taxing authority, solely based on its technical merits. The tax benefit recognized is measured as the largest amount of benefit which is greater than 50 percent likely to be realized upon settlement with the taxing authority. The Company recognizes interest accrued and penalties related to unrecognized tax benefits in the income tax provision.
Foreign Currency Translation	Foreign Currency Translation The functional currency of the Company’s major foreign subsidiaries is generally the local currency. Adjustments resulting from translating foreign functional currency financial statements into U.S. dollars are recorded as a separate component on the consolidated statements of comprehensive income (loss). Foreign currency transaction gains and losses are included in net income (loss) for the period. All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Revenues and expenses are translated at the average exchange rate during the period. Equity transactions are translated using historical exchange rates.
Warranties and Indemnification	Warranties and Indemnification The Company’s enterprise cloud computing services are typically warranted to perform in a manner consistent with general industry standards that are reasonably applicable and materially in accordance with the Company’s online help documentation under normal use and circumstances. The Company’s arrangements generally include certain provisions for indemnifying customers against liabilities if its products or services infringe a third party’s intellectual property rights. To date, the Company has not incurred any material costs as a result of such obligations and has not accrued any material liabilities related to such obligations in the accompanying consolidated financial statements. The Company has also agreed to indemnify its directors and executive officers for costs associated with any fees, expenses, judgments, fines and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by the Company, arising out of that person’s services as the Company’s director or officer or that person’s services provided to any other company or enterprise at the Company’s request. The Company maintains director and officer insurance coverage that would generally enable the Company to recover a portion of any future amounts paid. The Company may also be subject to indemnification obligations by law with respect to the actions of its employees under certain circumstances and in certain jurisdictions.
New Accounting Pronouncements Adopted and Pending	New Accounting Pronouncements Adopted In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs” (“ASU 2015-03”), which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. However, ASU 2015-03 does not address deferred issuance costs for line-of-credit arrangements; therefore, in August 2015, the FASB issued Accounting Standards Update No. 2015-15, “Interest-Imputation of Interest: Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements” (“ASU 2015-15”). ASU 2015-15 allows an entity to defer debt issuance costs associated with line-of-credit arrangements, including arrangements with no outstanding borrowings, and classify them as an asset, and amortize them over the term of the arrangements. The recognition and measurement guidance for debt issuance costs is not affected by the standards. The Company adopted the standards in the three months ended April 30, 2016. Upon adoption, the unamortized debt issuance costs previously reported in Other assets, net, with a carrying amount of approximately $7.9 million at January 31, 2016, were reclassified and presented as a deduction of the corresponding liabilities, Convertible 0.25% senior notes, net and Loan assumed on 50 Fremont. In September 2015, the FASB issued Accounting Standards Update No. 2015-16, “Simplifying the Accounting for Measurement-Period Adjustments (Topic 805)” (“ASU 2015-16”), which eliminates the requirement to restate prior period financial statements for measurement period adjustments in business combinations. ASU 2015-16 requires that the cumulative impact of a measurement period adjustment (including the impact on prior periods) be recognized in the reporting period in which the adjustment is identified. The Company adopted this standard during the three months ending April 30, 2016 and there was no material impact of this on the Company's financial statements. In March 2016, the FASB issued Accounting Standards Update No. 2016-09, “Stock Compensation (Topic 718): Improvements to Employee Shared-Based Payment Accounting” (“ASU 2016-09”) which simplifies and improves several aspects of the accounting for employee share-based payment transactions for public entities. The new guidance requires companies to record excess tax benefits and tax deficiencies as income tax benefit or expense in the statement of operations when the awards vest or are settled, and eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the statement of cash flows. The Company early adopted the standard in the three months ended April 30, 2016. Upon adoption, the Company recognized the previously unrecognized excess tax benefits using the modified retrospective transition method, which resulted in a cumulative-effect adjustment of $8.7 million to accumulated deficit. This adjustment reduced the April 30, 2016 accumulated deficit balance. The previously unrecognized excess tax effects were recorded as a deferred tax asset, which was fully offset by a valuation allowance. Without the valuation allowance, the Company’s deferred tax asset would have increased by $614.5 million . The Company also elected to apply the change in presentation to the statements of cash flows retrospectively and no longer classified the excess tax benefits from employee stock plans as a reduction from operating cash flows for all periods presented. Pending Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) which amended the existing FASB Accounting Standards Codification. This standard establishes a principle for recognizing revenue upon the transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. The standard also provides guidance on the recognition of costs related to obtaining and fulfilling customer contracts. The FASB deferred the effective date for the new revenue reporting standard for entities reporting under U.S. GAAP for one year. In accordance with the deferral, ASU 2014-09 will be effective for fiscal 2019, including interim periods within that reporting period. The Company is currently in the process of assessing the adoption methodology, which allows the amendment to be applied retrospectively to each prior period presented, or with the cumulative effect recognized as of the date of initial application. The Company is also evaluating the impact of the adoption of ASU 2014-09 on its consolidated financial statements and has not determined whether the effect will be material to either its revenue results or its deferred commissions balances. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires lessees to record most leases on their balance sheets but recognize the expenses on their income statements in a manner similar to current practice. ASU 2016-02 states that a lessee would recognize a lease liability for the obligation to make lease payments and a right-to-use asset for the right to use the underlying asset for the lease term. The new standard is effective for interim and annual periods beginning after December 15, 2018 and early adoption is permitted. The Company is currently evaluating the impact to its consolidated financial statements.

Summary of Business and Signi22

Summary of Business and Significant Accounting Policies (Tables)	3 Months Ended
	Apr. 30, 2016
Accounting Policies [Abstract]
Revenues By Geographical Region	Revenues by geographical region are as follows (in thousands): Three Months Ended April 30, 2016 2015 Americas $ 1,413,229 $ 1,115,120 Europe 327,854 258,805 Asia Pacific 175,520 137,242 $ 1,916,603 $ 1,511,167
Schedule Of Property And Equipment Estimated Useful Lives	Property and equipment are stated at cost. Depreciation is calculated on a straight-line basis over the estimated useful lives of those assets as follows: Computers, equipment and software 3 to 9 years Furniture and fixtures 5 years Leasehold improvements Shorter of the estimated lease term or 10 years Building and structural components Average weighted useful life of 32 years Building- leased facility 27 years Building improvements 10 years
Schedule Of Assumptions Used To Calculate Fair Value Of Options Granted	The fair value of each stock option grant was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions and fair value per share: Three Months Ended Stock Options 2016 2015 Volatility 32.1 % 37.4 % Estimated life 3.5 years 3.6 years Risk-free interest rate 0.9-1.0 % 1.13-1.36 % Weighted-average fair value per share of grants $ 17.35 $ 19.52

Investments (Tables)

Investments (Tables)	3 Months Ended
	Apr. 30, 2016
Investments Schedule [Abstract]
Schedule of Marketable Securities	At April 30, 2016 , marketable securities consisted of the following (in thousands): Investments classified as Marketable Securities Amortized Cost Unrealized Gains Unrealized Losses Fair Value Corporate notes and obligations $ 1,089,511 $ 5,661 $ (1,277 ) $ 1,093,895 U.S. treasury securities 221,467 783 (39 ) 222,211 Mortgage backed obligations 125,778 213 (174 ) 125,817 Asset backed securities 334,894 481 (190 ) 335,185 Municipal securities 74,987 319 (86 ) 75,220 Foreign government obligations 31,898 79 (3 ) 31,974 U.S. agency obligations 32,058 20 (11 ) 32,067 Total marketable securities $ 1,910,593 $ 7,556 $ (1,780 ) $ 1,916,369 At January 31, 2016 , marketable securities consisted of the following (in thousands): Investments classified as Marketable Securities Amortized Cost Unrealized Gains Unrealized Losses Fair Value Corporate notes and obligations $ 949,266 $ 1,398 $ (2,983 ) $ 947,681 U.S. treasury securities 157,625 375 (56 ) 157,944 Mortgage backed obligations 104,242 106 (323 ) 104,025 Asset backed securities 271,292 186 (226 ) 271,252 Municipal securities 44,934 209 (6 ) 45,137 Foreign government obligations 18,014 42 (5 ) 18,051 U.S. agency obligations 16,076 16 (6 ) 16,086 Covered bonds 6,690 148 0 6,838 Total marketable securities $ 1,568,139 $ 2,480 $ (3,605 ) $ 1,567,014
Schedule of Short-Term and Long-Term Marketable Securities	The duration of the investments classified as marketable securities is as follows (in thousands): As of April 30, January 31, Recorded as follows: Short-term (due in one year or less) $ 232,109 $ 183,018 Long-term (due after one year) 1,684,260 1,383,996 $ 1,916,369 $ 1,567,014
Schedule of Marketable Securities in a Unrealized Loss Position	As of April 30, 2016 , the following marketable securities were in an unrealized loss position (in thousands): Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Corporate notes and obligations $ 272,239 $ (813 ) $ 61,847 $ (464 ) $ 334,086 $ (1,277 ) U.S. treasury securities 47,552 (39 ) 0 0 47,552 (39 ) Mortgage backed obligations 52,427 (126 ) 8,986 (48 ) 61,413 (174 ) Asset backed securities 106,226 (148 ) 12,371 (42 ) 118,597 (190 ) Municipal securities 18,065 (86 ) 0 0 18,065 (86 ) Foreign government obligations 7,650 (3 ) 0 0 7,650 (3 ) U.S. agency obligations 13,481 (11 ) 0 0 13,481 (11 ) $ 517,640 $ (1,226 ) $ 83,204 $ (554 ) $ 600,844 $ (1,780 )
Schedule of Assets and Liabilities Measured at Fair Value an a Recurring Basis	The following table presents information about the Company’s assets and liabilities that are measured at fair value as of April 30, 2016 and indicates the fair value hierarchy of the valuation (in thousands): Description Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balances as of April 30, 2016 Cash equivalents (1): Time deposits $ 0 $ 347,815 $ 0 $ 347,815 Money market mutual funds 868,519 0 0 868,519 Agency and sovereign paper 0 2,904 0 2,904 Marketable securities: Corporate notes and obligations 0 1,093,895 0 1,093,895 U.S. treasury securities 0 222,211 0 222,211 Mortgage backed obligations 0 125,817 0 125,817 Asset backed securities 0 335,185 0 335,185 Municipal securities 0 75,220 0 75,220 Foreign government obligations 0 31,974 0 31,974 U.S. agency obligations 0 32,067 0 32,067 Foreign currency derivative contracts (2) 0 19,871 0 19,871 Total Assets $ 868,519 $ 2,286,959 $ 0 $ 3,155,478 Liabilities Foreign currency derivative contracts (3) $ 0 $ 7,973 $ 0 $ 7,973 Total Liabilities $ 0 $ 7,973 $ 0 $ 7,973 _____________ (1) Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of April 30, 2016 , in addition to $579.8 million of cash. (2) Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of April 30, 2016 . (3) Included in “accounts payable, accrued expenses and other liabilities” in the consolidated balance sheet as of April 30, 2016 . The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2016 and indicates the fair value hierarchy of the valuation (in thousands): Description Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balances as of January 31, 2016 Cash equivalents (1): Time deposits $ 0 $ 236,798 $ 0 $ 236,798 Money market mutual funds 216,107 0 0 216,107 Commercial paper 0 159,230 0 159,230 Agency and sovereign paper 0 13,599 0 13,599 Marketable securities: Corporate notes and obligations 0 947,681 0 947,681 U.S. treasury securities 0 157,944 0 157,944 Mortgage backed obligations 0 104,025 0 104,025 Asset backed securities 0 271,252 0 271,252 Municipal securities 0 45,137 0 45,137 Foreign government obligations 0 18,051 0 18,051 U.S. agency obligations 0 16,086 0 16,086 Covered bonds 0 6,838 0 6,838 Foreign currency derivative contracts (2) 0 4,731 0 4,731 Total Assets $ 216,107 $ 1,981,372 $ 0 $ 2,197,479 Liabilities Foreign currency derivative contracts (3) $ 0 $ 14,025 $ 0 $ 14,025 Total Liabilities $ 0 $ 14,025 $ 0 $ 14,025 ______________ (1) Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of January 31, 2016 , in addition to $532.6 million of cash. (2) Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of January 31, 2016 . (3) Included in “accounts payable, accrued expenses and other liabilities” in the accompanying consolidated balance sheet as of January 31, 2016 .
Schedule of Outstanding Foreign Currency Derivative Contracts Related Primarily to Intercompany Receivables and Payables	Details on outstanding foreign currency derivative contracts related primarily to intercompany receivables and payables are presented below (in thousands): As of April 30, 2016 January 31, 2016 Notional amount of foreign currency derivative contracts $ 1,513,108 $ 1,274,515 Fair value of foreign currency derivative contracts $ 11,898 $ (9,294 )
Fair Value of Outstanding Derivative Instruments	The fair value of the Company’s outstanding derivative instruments are summarized below (in thousands): Fair Value of Derivative Instruments As of Balance Sheet Location April 30, 2016 January 31, 2016 Derivative Assets Derivatives not designated as hedging instruments: Foreign currency derivative contracts Prepaid expenses and other current assets $ 19,871 $ 4,731 Derivative Liabilities Derivatives not designated as hedging instruments: Foreign currency derivative contracts Accounts payable, accrued expenses and other liabilities $ 7,973 $ 14,025
Schedule of The Effect of The Derivative Instruments Not Designated as Hedging Instruments on the Condensed Consolidated Statements of Operations	The effect of the derivative instruments not designated as hedging instruments on the consolidated statements of operations during the three months ended April 30, 2016 and 2015 , respectively, are summarized below (in thousands): Derivatives Not Designated as Hedging Gains (losses) on Derivative Instruments Three Months Ended Location 2016 2015 Foreign currency derivative contracts Other expense $ (1,442 ) $ 11,459
Schedule of Components of Investment Income	Investment income consists of interest income, realized gains, and realized losses on the Company’s cash, cash equivalents and marketable securities. The components of investment income are presented below (in thousands): Three Months Ended April 30, 2016 2015 Interest income $ 7,773 $ 3,049 Realized gains 1,054 2,128 Realized losses (705 ) (616 ) Total investment income $ 8,122 $ 4,561

Property and Equipment (Tables)

Property and Equipment (Tables)	3 Months Ended
	Apr. 30, 2016
Property, Plant and Equipment [Abstract]
Schedule of Property And Equipment	Property and equipment, net consisted of the following (in thousands): As of April 30, 2016 January 31, 2016 Land $ 183,888 $ 183,888 Buildings and building improvements 618,510 614,081 Computers, equipment and software 1,321,660 1,281,766 Furniture and fixtures 85,327 82,242 Leasehold improvements 499,108 473,688 $ 2,708,493 $ 2,635,665 Less accumulated depreciation and amortization (997,021 ) (919,837 ) $ 1,711,472 $ 1,715,828

Business Combinations (Tables)

Business Combinations (Tables) - SteelBrick, Inc.	3 Months Ended
	Apr. 30, 2016
Business Acquisition [Line Items]
Schedule of Consideration Transferred	The preliminary acquisition date fair value consideration transferred for SteelBrick was approximately $314.8 million , which consisted of the following (in thousands, except for share data): Fair Value Cash $ 1,698 Common stock (4,288,447 shares) 278,372 Fair value of stock options and restricted stock awards assumed 10,989 Fair value of pre-existing relationship 23,726 Total $ 314,785
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands): Fair Value Cash and cash equivalents $ 59,296 Other current and noncurrent tangible assets 3,012 Customer contract asset, current and noncurrent 16,903 Intangible assets 49,160 Goodwill 217,986 Deferred revenue, current and noncurrent (8,479 ) Customer liability, current and noncurrent (9,949 ) Other liabilities, current and noncurrent (2,665 ) Deferred tax liability (10,479 ) Net assets acquired $ 314,785
Schedule of Identifiable Intangible Assets Acquired	The following table sets forth the components of identifiable intangible assets acquired (in thousands) and their estimated useful lives as of the date of acquisition. Fair Value Useful Life Developed technology $ 30,700 4 years Customer relationships 17,110 7 years Other purchased intangible assets 1,350 1 year Total intangible assets subject to amortization $ 49,160

Debt (Tables)

Debt (Tables)	3 Months Ended
	Apr. 30, 2016
Debt Disclosure [Abstract]
Summary of Convertible Senior Notes	Convertible Senior Notes Par Value Outstanding Equity Component Recorded at Issuance Liability Component of Par Value as of (in thousands) April 30, January 31, 0.25% Convertible Senior Notes due April 1, 2018 $ 1,150,000 $ 122,421 (1) $ 1,095,104 (2) $ 1,088,097 (2) ___________ (1) This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes. (2) In April 2015, the FASB issued ASU 2015-03 which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. The Company retrospectively adopted this standard for the prior period presented. Certain terms of the conversion features of the 0.25% Senior Notes are as follows: Conversion Rate per $1,000 Par Value Initial Conversion Price per Share Convertible Date 0.25% Senior Notes 15.0512 $ 66.44 January 1, 2018
Schedule of Convertible Senior Notes	The 0.25% Senior Notes consisted of the following (in thousands): As of April 30, January 31, Liability component : Principal (1) $ 1,150,000 $ 1,150,000 Less: debt discount, net (2) (48,753 ) (54,941 ) Less: debt issuance cost (3) (6,143 ) (6,962 ) Net carrying amount $ 1,095,104 $ 1,088,097 (1) The effective interest rate of the 0.25% Senior Notes is 2.53% . The interest rate is based on the interest rates of similar liabilities at the time of issuance that did not have an associated convertible feature. (2) Included in the consolidated balance sheets within Convertible 0.25% Senior Notes (which is classified as a noncurrent liability) and is amortized over the life of the 0.25% Senior Notes using the effective interest rate method. (3) In April 2015, the FASB issued ASU 2015-03 which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. The Company retrospectively adopted this standard for the prior period presented.
Summary of Hedge Notes	To minimize the impact of potential economic dilution upon conversion of the Notes, the Company entered into convertible note hedge transactions with respect to its common stock (the “ 0.25% Note Hedges”). (in thousands, except for shares) Date Purchase Shares 0.25% Note Hedges March 2013 $ 153,800 17,308,880
Components of Warrants	Warrants Date Proceeds (in thousands) Shares Strike Price 0.25% Warrants March 2013 $ 84,800 17,308,880 $ 90.40
Schedule of Interest Expense	The following table sets forth total interest expense recognized related to the 0.25% Senior Notes, the Credit Facility and the Loan prior to capitalization of interest (in thousands): Three Months Ended April 30, 2016 2015 Contractual interest expense $ 2,814 $ 3,350 Amortization of debt issuance costs 1,028 1,018 Amortization of debt discount 6,226 6,059 $ 10,068 $ 10,427

Other Balance Sheet Accounts (T

Other Balance Sheet Accounts (Tables)	3 Months Ended
	Apr. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consisted of the following (in thousands): As of April 30, January 31, Prepaid income taxes 24,329 22,044 Other taxes receivable 28,117 27,341 Prepaid expenses and other current assets 254,179 201,209 $ 306,625 $ 250,594
Schedule of Capitalized Software Costs	Capitalized software consisted of the following (in thousands): As of April 30, January 31, Capitalized internal-use software development costs, net of accumulated amortization of $201,292 and $186,251, respectively $ 131,376 $ 123,065 Acquired developed technology, net of accumulated amortization of $505,147 and $481,118, respectively 275,654 261,193 $ 407,030 $ 384,258
Schedule of Goodwill	Goodwill consisted of the following (in thousands): Balance as of January 31, 2016 $ 3,849,937 Steelbrick 217,986 MetaMind 31,242 Other business combinations 30,554 Finalization of acquisition date fair values (63 ) Balance as of April 30, 2016 $ 4,129,656
Schedule of Other Assets	Other assets consisted of the following (in thousands): As of April 30, January 31, Deferred income taxes, noncurrent, net $ 17,597 $ 15,986 Long-term deposits 23,650 19,469 Purchased intangible assets, net of accumulated amortization of $228,704 and $212,248, respectively 267,722 258,580 Acquired intellectual property, net of accumulated amortization of $24,186 and $22,439, respectively 10,564 10,565 Other (1) 89,652 66,310 $ 409,185 $ 370,910 (1) In April 2015, the FASB issued ASU 2015-03 which simplifies the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability rather than an asset that is amortized. The Company retrospectively adopted this standard for the prior period presented, which resulted in an adjustment of $7.9 million to Other.
Schedule of Accrued Expenses and Other Current Liabilities	Accounts payable, accrued expenses and other liabilities consisted of the following (in thousands): As of April 30, January 31, Accounts payable $ 54,583 $ 71,481 Accrued compensation 386,410 554,502 Accrued other liabilities 433,631 454,287 Accrued income and other taxes payable 154,550 205,781 Accrued professional costs 30,095 33,814 Accrued rent 15,789 14,071 Financing obligation - leased facility, current (2) 18,139 15,402 $ 1,093,197 $ 1,349,338
Schedule of Other Noncurrent Liabilities	Other noncurrent liabilities consisted of the following (in thousands): As of April 30, January 31, Deferred income taxes and income taxes payable $ 85,579 $ 85,996 Financing obligation - leased facility (2) 202,246 196,711 Long-term lease liabilities and other 551,900 550,358 $ 839,725 $ 833,065 (2) As of January 31, 2016, 350 Mission was in construction. In March 2016, construction was completed on the building.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Apr. 30, 2016
Equity [Abstract]
Schedule Of Stock Activity	Stock activity excluding the ESPP is as follows: Options Outstanding Shares Available for Grant Outstanding Stock Options Weighted- Average Exercise Price Aggregate Intrinsic Value Balance as of January 31, 2016 46,879,908 26,258,798 $ 56.26 Increase in shares authorized: 2013 Equity Incentive Plan 80,332 2014 Inducement Equity Incentive Plan 11,049 Assumed equity plans 584,392 Options granted under all plans (867,292 ) 867,292 40.58 Restricted stock activity (1,821,324 ) Performance restricted stock units 0 Stock grants to board and advisory board members (44,026 ) Exercised 0 (854,362 ) 38.23 Plan shares expired (28,916 ) Canceled 250,573 (250,573 ) 67.73 Balance as of April 30, 2016 45,044,696 26,021,155 $ 56.22 $ 538,367,465 Vested or expected to vest 23,947,836 $ 55.11 $ 519,312,755 Exercisable as of April 30, 2016 10,372,672 $ 43.12 $ 338,995,305
Schedule Of Stock Options Outstanding	The following table summarizes information about stock options outstanding as of April 30, 2016 : Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding Weighted- Average Remaining Contractual Life (Years) Weighted- Average Exercise Price Number of Shares Weighted- Average Exercise Price $0.86 to $37.95 4,461,075 2.3 $ 27.45 3,691,607 $ 28.16 $38.03 to $52.14 2,480,093 2.0 39.87 1,934,518 39.57 $52.30 3,684,201 4.6 52.30 2,012,682 52.30 $53.60 to $57.79 1,414,340 5.1 55.31 514,062 55.35 $59.34 6,138,145 5.6 59.34 2,015,280 59.34 $59.37 to $77.86 2,326,108 6.2 68.62 204,523 65.72 $80.99 5,517,193 6.6 80.99 0 0.00 26,021,155 4.8 $ 56.22 10,372,672 $ 43.12
Schedule Of Restricted Stock Activity	Restricted stock activity is as follows: Restricted Stock Outstanding Outstanding Weighted- Average Exercise Price Aggregate Intrinsic Value Balance as of January 31, 2016 21,294,585 $ 0.001 Granted- restricted stock units and awards 1,468,220 0.001 Canceled (512,280 ) 0.001 Vested and converted to shares (1,840,948 ) 0.001 Balance as of April 30, 2016 20,409,577 $ 0.001 $ 1,547,045,937 Expected to vest 17,223,868 $ 1,305,569,194
Schedule Of Shares Of Common Stock Available For Future Issuance Under Stock Option Plans	The following number of shares of common stock were reserved and available for future issuance at April 30, 2016 : Options outstanding 26,021,155 Restricted stock awards and units and performance stock units outstanding 20,409,577 Stock available for future grant: 2013 Equity Incentive Plan 44,462,309 2014 Inducement Equity Incentive Plan 446,533 Amended and Restated 2004 Employee Stock Purchase Plan 6,844,796 Acquired equity plans 135,854 Convertible Senior Notes 17,308,880 Warrants 17,308,880 132,937,984

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Apr. 30, 2016
Earnings Per Share [Abstract]
Reconciliation of Denominator Used In Calculation of Basic And Diluted Loss Per Share	A reconciliation of the denominator used in the calculation of basic and diluted earnings per share is as follows (in thousands): Three Months Ended April 30, 2016 2015 Numerator: Net income $ 38,759 $ 4,092 Denominator: Weighted-average shares outstanding for basic income per share 677,514 653,809 Effect of dilutive securities: Convertible senior notes 945 0 Employee stock awards 8,340 10,501 Warrants 0 0 Adjusted weighted-average shares outstanding and assumed conversions for diluted income per share 686,799 664,310
Shares Excluded From Diluted Earnings Or Loss Per Share	The weighted-average number of shares outstanding used in the computation of diluted earnings per share does not include the effect of the following potential outstanding common stock. The effects of these potentially outstanding shares were not included in the calculation of diluted earnings per share because the effect would have been anti-dilutive (in thousands): Three Months Ended April 30, 2016 2015 Employee stock awards 21,321 8,801 Convertible senior notes 0 17,309 Warrants 17,309 17,309

Commitments (Tables)

Commitments (Tables)	3 Months Ended
	Apr. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Future Minimum Lease Payments Under Non-Cancelable Operating And Capital Leases	As of April 30, 2016 , the future minimum lease payments under non-cancelable operating and capital leases are as follows (in thousands): Capital Operating Financing Obligation -Leased Facility(1) Fiscal Period: Remaining nine months of fiscal 2017 $ 50,960 $ 287,083 $ 14,518 Fiscal 2018 122,765 351,971 21,437 Fiscal 2019 115,797 299,254 21,881 Fiscal 2020 201,579 239,804 22,325 Fiscal 2021 37 223,280 22,770 Thereafter 0 1,233,948 233,927 Total minimum lease payments 491,138 $ 2,635,340 $ 336,858 Less: amount representing interest (42,438 ) Present value of capital lease obligations $ 448,700 ______________ (1) Total Financing Obligation, Building -Leased Facility noted above represents the total obligation on the lease agreement including amounts allocated to interest noted in Note 3 “Property and Equipment.” As of April 30, 2016 , $220.3 million of the total obligation noted above was recorded to Financing obligation, building - leased facility, of which the current portion is included in "Accounts payable, accrued expenses and other liabilities" and the non-current portion is included in “Other noncurrent liabilities” on the consolidated balance sheets.

Summary of Business and Signi31

Summary of Business and Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Apr. 30, 2016USD ($)customersegmentcountry	Apr. 30, 2015USD ($)customercountry	Jan. 31, 2016customer
Concentration Risk [Line Items]
Number of operating segments | segment	1
Percentage of tax benefit likely to be realized upon settlement (greater than 50%)	50.00%
Impairment of long-lived assets | $	$ 0	$ 0
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Customers exceeding concentration of accounts receivable threshold, number	0		0
Concentration risk percentage	5.00%		5.00%
Revenue | Customer Concentration Risk
Concentration Risk [Line Items]
Customers exceeding concentration of total revenue threshold, number	0	0
Concentration risk percentage	5.00%	5.00%
Revenue | Geographic Concentration Risk | Americas
Concentration Risk [Line Items]
Concentration risk percentage	97.00%	95.00%
Revenue | Geographic Concentration Risk | All Other Countries
Concentration Risk [Line Items]
Countries exceeding concentration of total revenue threshold, number | country	0	0
Assets | Geographic Concentration Risk | Outside Americas
Concentration Risk [Line Items]
Concentration risk percentage	11.00%		11.00%
Minimum
Concentration Risk [Line Items]
Deferred and amortized commission period	12 months
Maximum
Concentration Risk [Line Items]
Deferred and amortized commission period	36 months

Summary of Business and Signi32

Summary of Business and Significant Accounting Policies - Revenues by Geographical Region (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,916,603	$ 1,511,167
Reportable Geographical Components [Member] | Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,413,229	1,115,120
Reportable Geographical Components [Member] | Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	327,854	258,805
Reportable Geographical Components [Member] | Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 175,520	$ 137,242

Summary of Business and Signi33

Summary of Business and Significant Accounting Policies - Schedule of Property and Equipment Estimated Useful Lives (Detail)	3 Months Ended
	Apr. 30, 2016
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Building, Leased Facility [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	27 years
Building and structural components
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	32 years
Building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	10 years
Minimum | Computers, equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Minimum | Internal-use software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Maximum | Computers, equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	9 years
Maximum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	10 years
Maximum | Internal-use software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years

Summary of Business and Signi34

Summary of Business and Significant Accounting Policies - Accounting for Stock-Based Expense (Detail)	3 Months Ended
	Apr. 30, 2016purchase_period$ / shares	Apr. 30, 2015$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Period for recognition	2 years 2 months 12 days
Offering period	12 months
Expected dividend yield	0.00%
Number of purchase periods | purchase_period	2
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	32.10%	37.40%
Estimated life	3 years 6 months	3 years 7 months
Risk-free interest rate, minimum	0.90%	1.13%
Risk-free interest rate, maximum	1.00%	1.36%
Weighted-average fair value per share of grants (in dollars per share) | $ / shares	$ 17.35	$ 19.52

Summary of Business and Signi35

Summary of Business and Significant Accounting Policies - New Accounting Pronouncements Adopted (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2016	Jan. 31, 2016
0.25% Convertible Senior Notes due April 1, 2018 | Notes Payable to Banks
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contractual interest rate	0.25%	0.25%
Accounting Standards Update 2015-03 [Member] | Other Noncurrent Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized debt issuance costs		$ 7.9
Accounting Standards Update 2015-03 [Member] | Convertible 0.25% Senior Notes, Net and Loan Assumed on 50 Fremont [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized debt issuance costs		(7.9)
Accounting Standards Update 2016-09 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in deferred tax assets If no valuation allowance recorded	$ 614.5
Accounting Standards Update 2016-09 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction of accumulated deficit balance		$ 8.7

Investments - Schedule of Marke

Investments - Schedule of Marketable Securities (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,910,593	$ 1,568,139
Unrealized Gains	7,556	2,480
Unrealized Losses	(1,780)	(3,605)
Fair Value	1,916,369	1,567,014
Corporate notes and obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,089,511	949,266
Unrealized Gains	5,661	1,398
Unrealized Losses	(1,277)	(2,983)
Fair Value	1,093,895	947,681
U.S. treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	221,467	157,625
Unrealized Gains	783	375
Unrealized Losses	(39)	(56)
Fair Value	222,211	157,944
Mortgage backed obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	125,778	104,242
Unrealized Gains	213	106
Unrealized Losses	(174)	(323)
Fair Value	125,817	104,025
Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	334,894	271,292
Unrealized Gains	481	186
Unrealized Losses	(190)	(226)
Fair Value	335,185	271,252
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	74,987	44,934
Unrealized Gains	319	209
Unrealized Losses	(86)	(6)
Fair Value	75,220	45,137
Foreign government obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	31,898	18,014
Unrealized Gains	79	42
Unrealized Losses	(3)	(5)
Fair Value	31,974	18,051
U.S. agency obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,058	16,076
Unrealized Gains	20	16
Unrealized Losses	(11)	(6)
Fair Value	$ 32,067	16,086
Covered bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		6,690
Unrealized Gains		148
Unrealized Losses		0
Fair Value		$ 6,838

Investments - Schedule of Short

Investments - Schedule of Short-Term and Long-Term Marketable Securities (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Short-term (due in one year or less)	$ 232,109	$ 183,018
Long-term (due after one year)	1,684,260	1,383,996
Fair Value of Marketable Securities	$ 1,916,369	$ 1,567,014

Investments - Schedule of Mar38

Investments - Schedule of Marketable Securities in Unrealized Loss Position (Detail) $ in Thousands	Apr. 30, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	$ 517,640
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(1,226)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	83,204
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	(554)
Marketable securities in an unrealized loss position, Fair Value	600,844
Marketable securities in an unrealized loss position, Unrealized Losses	(1,780)
Corporate notes and obligations
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	272,239
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(813)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	61,847
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	(464)
Marketable securities in an unrealized loss position, Fair Value	334,086
Marketable securities in an unrealized loss position, Unrealized Losses	(1,277)
U.S. treasury securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	47,552
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(39)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	0
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	0
Marketable securities in an unrealized loss position, Fair Value	47,552
Marketable securities in an unrealized loss position, Unrealized Losses	(39)
Mortgage backed obligations
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	52,427
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(126)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	8,986
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	(48)
Marketable securities in an unrealized loss position, Fair Value	61,413
Marketable securities in an unrealized loss position, Unrealized Losses	(174)
Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	106,226
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(148)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	12,371
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	(42)
Marketable securities in an unrealized loss position, Fair Value	118,597
Marketable securities in an unrealized loss position, Unrealized Losses	(190)
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	18,065
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(86)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	0
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	0
Marketable securities in an unrealized loss position, Fair Value	18,065
Marketable securities in an unrealized loss position, Unrealized Losses	(86)
Foreign government obligations
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	7,650
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(3)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	0
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	0
Marketable securities in an unrealized loss position, Fair Value	7,650
Marketable securities in an unrealized loss position, Unrealized Losses	(3)
U.S. agency obligations
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	13,481
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	(11)
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	0
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	0
Marketable securities in an unrealized loss position, Fair Value	13,481
Marketable securities in an unrealized loss position, Unrealized Losses	$ (11)

Investments - Additional Inform

Investments - Additional Information (Detail)	3 Months Ended
	Apr. 30, 2016USD ($)investment	Jan. 31, 2016USD ($)investment
Investment Holdings [Line Items]
Unrealized losses on fixed rate investments, upper range value	$ 98,000
Strategic Investments
Investment Holdings [Line Items]
Number of investments in marketable equity securities | investment	6	6
Unrealized gain on marketable equity securities	$ 13,100,000	$ 8,500,000
non-marketable debt and equity securities	500,300,000	504,500,000
non-marketable debt and equity securities, unrealized gains	206,600,000	209,600,000
Strategic Investments | Significant Unobservable Inputs (Level 3) | Estimate of Fair Value Measurement [Member] | Cost Approach Valuation Technique [Member]
Investment Holdings [Line Items]
non-marketable debt and equity securities, estimated fair value	706,900,000	714,100,000
Strategic Investments | Equity Securities
Investment Holdings [Line Items]
Fair value of marketable equity securities	$ 20,400,000	$ 16,200,000

Investments - Schedule of Asset

Investments - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 579,800	$ 532,600
Recurring measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		6,838
Total Assets	3,155,478	2,197,479
Total Liabilities	7,973	14,025
Recurring measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		0
Total Assets	868,519	216,107
Total Liabilities	0	0
Recurring measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		6,838
Total Assets	2,286,959	1,981,372
Total Liabilities	7,973	14,025
Recurring measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		0
Total Assets	0	0
Total Liabilities	0	0
Recurring measurement | Prepaid expenses and other current assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	19,871	4,731
Recurring measurement | Prepaid expenses and other current assets | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	0	0
Recurring measurement | Prepaid expenses and other current assets | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	19,871	4,731
Recurring measurement | Prepaid expenses and other current assets | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	0	0
Recurring measurement | Accounts payable, accrued expenses and other liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	7,973	14,025
Recurring measurement | Accounts payable, accrued expenses and other liabilities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	0	0
Recurring measurement | Accounts payable, accrued expenses and other liabilities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	7,973	14,025
Recurring measurement | Accounts payable, accrued expenses and other liabilities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency derivative contracts	0	0
Recurring measurement | Time deposits | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	347,815	236,798
Recurring measurement | Time deposits | Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring measurement | Time deposits | Cash and cash equivalents | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	347,815	236,798
Recurring measurement | Time deposits | Cash and cash equivalents | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring measurement | Money market mutual funds | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	868,519	216,107
Recurring measurement | Money market mutual funds | Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	868,519	216,107
Recurring measurement | Money market mutual funds | Cash and cash equivalents | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring measurement | Money market mutual funds | Cash and cash equivalents | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring measurement | Commercial paper | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		159,230
Recurring measurement | Commercial paper | Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Recurring measurement | Commercial paper | Cash and cash equivalents | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		159,230
Recurring measurement | Commercial paper | Cash and cash equivalents | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Recurring measurement | Agency and sovereign paper | Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	2,904	13,599
Recurring measurement | Agency and sovereign paper | Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring measurement | Agency and sovereign paper | Cash and cash equivalents | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	2,904	13,599
Recurring measurement | Agency and sovereign paper | Cash and cash equivalents | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Recurring measurement | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	1,093,895	947,681
Recurring measurement | Corporate notes and obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Corporate notes and obligations | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	1,093,895	947,681
Recurring measurement | Corporate notes and obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	222,211	157,944
Recurring measurement | U.S. treasury securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | U.S. treasury securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	222,211	157,944
Recurring measurement | U.S. treasury securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Mortgage backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	125,817	104,025
Recurring measurement | Mortgage backed obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Mortgage backed obligations | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	125,817	104,025
Recurring measurement | Mortgage backed obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	335,185	271,252
Recurring measurement | Asset backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Asset backed securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	335,185	271,252
Recurring measurement | Asset backed securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	75,220	45,137
Recurring measurement | Municipal securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Municipal securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	75,220	45,137
Recurring measurement | Municipal securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Foreign government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	31,974	18,051
Recurring measurement | Foreign government obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | Foreign government obligations | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	31,974	18,051
Recurring measurement | Foreign government obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | U.S. agency obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	32,067	16,086
Recurring measurement | U.S. agency obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Recurring measurement | U.S. agency obligations | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	32,067	16,086
Recurring measurement | U.S. agency obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 0	$ 0

Investments - Schedule of Outst

Investments - Schedule of Outstanding Foreign Currency Derivative Contracts Related Primarily to Intercompany Receivables and Payables (Detail) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Derivative [Line Items]
Fair value of foreign currency derivative contracts	$ 11,898	$ (9,294)
Foreign currency derivative contracts
Derivative [Line Items]
Notional amount of foreign currency derivative contracts	$ 1,513,108	$ 1,274,515

Investments - Fair Value of Out

Investments - Fair Value of Outstanding Derivative Instruments (Detail) - Derivatives not designated as hedging instruments - Foreign currency derivative contracts - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 19,871	$ 4,731
Accounts payable, accrued expenses and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 7,973	$ 14,025

Investments - Effect of Derivat

Investments - Effect of Derivative Instruments Not Designated as Hedging Instruments on Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Derivatives not designated as hedging instruments | Foreign currency derivative contracts | Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivative Instruments Recognized in Income	$ (1,442)	$ 11,459

Investments - Schedule of Compo

Investments - Schedule of Components of Investment Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Interest income	$ 7,773	$ 3,049
Realized gains	1,054	2,128
Realized losses	(705)	(616)
Total investment income	$ 8,122	$ 4,561

Property and Equipment (Detail)

Property and Equipment (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,708,493	$ 2,635,665
Less accumulated depreciation and amortization	(997,021)	(919,837)
Property and equipment, net	1,711,472	1,715,828
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	183,888	183,888
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	618,510	614,081
Computers, equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,321,660	1,281,766
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	85,327	82,242
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 499,108	$ 473,688

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) ft² in Thousands	3 Months Ended
	Apr. 30, 2016USD ($)	Apr. 30, 2015USD ($)	Jan. 31, 2016USD ($)	Dec. 31, 2013ft²
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 75,600,000	$ 72,500,000
Fixed assets acquired under capital lease agreements	748,400,000		$ 747,100,000
Net rentable area (in square feet) | ft²				445
Property and equipment, gross	2,708,493,000		2,635,665,000
Financing obligation - leased facility, current	18,139,000		15,402,000
Financing obligation - leased facility	202,246,000		196,711,000
Expected financing obligation	336,858,000
Impairment of long-lived assets	0	$ 0
Computers, equipment and software
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization	335,500,000		310,300,000
Property and equipment, gross	1,321,660,000		1,281,766,000
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	618,510,000		614,081,000
Construction costs capitalized
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 178,800,000		$ 174,600,000

Business Combinations (Narrativ

Business Combinations (Narrative) (Details) $ in Thousands	1 Months Ended		3 Months Ended
	Apr. 30, 2016USD ($)	Feb. 29, 2016USD ($)	Apr. 30, 2016USD ($)company	Apr. 30, 2015USD ($)	Jan. 31, 2016USD ($)
Business Acquisition [Line Items]
Business combinations, net of cash acquired			$ 1,799	$ 12,470
SteelBrick, Inc.
Business Acquisition [Line Items]
Investment owned					$ 13,900
SteelBrick, Inc.
Business Acquisition [Line Items]
Percentage of acquired platform delivered on parent company platform		100.00%
Share conversion ratio		0.08
Fair value of equity interest in acquiree		$ 23,726
Equity interest in acquiree		6.00%
Remeasurement gain		$ 9,800
Equity interest issued or issuable		39,600
Fair value of stock options and restricted stock awards assumed		10,989
Allocated to future services		28,600
Consideration transferred		$ 314,785
MetaMind [Member]
Business Acquisition [Line Items]
Equity interest issued or issuable	$ 5,500		5,500
Fair value of stock options and restricted stock awards assumed	500
Allocated to future services	5,000		5,000
Business combinations, net of cash acquired	32,800
Goodwill acquired	31,200		$ 31,242
MetaMind [Member] | CEO and Chairman of MetaMind [Member]
Business Acquisition [Line Items]
Consideration transferred	$ 6,000
Ownership percentage (greater than 10%)	10.00%		10.00%
Other Business Combination
Business Acquisition [Line Items]
Number of businesses acquired | company			2
Business combinations, net of cash acquired			$ 41,600
Goodwill acquired			$ 30,554

Business Combinations (Consider

Business Combinations (Consideration Transferred) (Details) - SteelBrick, Inc. $ in Thousands	1 Months Ended
	Feb. 29, 2016USD ($)shares
Business Acquisition [Line Items]
Cash	$ 1,698
Common stock	278,372
Fair value of stock options and restricted stock awards assumed	10,989
Fair value of pre-existing relationship	23,726
Total	$ 314,785
Common Stock
Business Acquisition [Line Items]
Common stock (in shares) | shares	4,288,447

Business Combinations (Estimate

Business Combinations (Estimated Fair Values of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Apr. 30, 2016	Feb. 29, 2016	Jan. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 4,129,656		$ 3,849,937
SteelBrick, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents		$ 59,296
Other current and noncurrent tangible assets		3,012
Customer contract asset, current and noncurrent		16,903
Intangible assets		49,160
Goodwill		217,986
Deferred revenue, current and noncurrent		(8,479)
Customer liability, current and noncurrent		(9,949)
Other liabilities, current and noncurrent		(2,665)
Deferred tax liability		(10,479)
Net assets acquired		$ 314,785

Business Combinations (Intangib

Business Combinations (Intangible Assets Acquired From Business Combinations) (Details) - SteelBrick, Inc. $ in Thousands	1 Months Ended
	Feb. 29, 2016USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 49,160
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 30,700
Useful Life	4 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 17,110
Useful Life	7 years
Other purchased intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value	$ 1,350
Useful Life	1 year

Debt - Summary of Convertible S

Debt - Summary of Convertible Senior Notes (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016	Mar. 31, 2013
Debt Conversion [Line Items]
Convertible 0.25% senior notes, net	$ 1,095,104	$ 1,088,097
Convertible Debt | 0.25% Convertible Senior Notes due April 1, 2018
Debt Conversion [Line Items]
Par Value Outstanding	1,150,000
Equity Component Recorded at Issuance	122,421
Convertible 0.25% senior notes, net	$ 1,095,104	$ 1,088,097
Contractual interest rate	0.25%		0.25%

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended
	Oct. 31, 2014	Apr. 30, 2016	Apr. 30, 2015	Mar. 31, 2013
Debt Instrument [Line Items]
Amount outstanding		$ 0
Debt instrument, interest expense		$ 10,068,000	$ 10,427,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 650,000,000
Fee on undrawn amount of revolver		0.15%
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee percentage	0.125%
Revolving Credit Facility | Minimum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
Revolving Credit Facility | Minimum | Adjusted LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Commitment fee percentage	0.25%
Revolving Credit Facility | Maximum | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Revolving Credit Facility | Maximum | Adjusted LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Convertible Debt | 0.25% Convertible Senior Notes due April 1, 2018
Debt Instrument [Line Items]
Par value				$ 1,150,000,000
Contractual interest rate		0.25%		0.25%
Consecutive trading days threshold		20 days
Consecutive trading days threshold, total		30 days
Stock price trigger		130.00%
Notes price trigger		98.00%
Purchase price upon fundamental change		100.00%
Estimated fair value of Company's senior notes		$ 1,500,000,000
Fair value debt basis amount		$ 100
Closing prices of Company's common stock		$ 75.80
If-converted value in excess of principal		$ 162,000,000
Mortgage Loan | 50 Fremont Street
Debt Instrument [Line Items]
Contractual interest rate		3.75%
Loan assumed on 50 Fremont		$ 200,000,000
Debt instrument, interest expense		$ 1,900,000

Debt - Schedule of Conversion o

Debt - Schedule of Conversion of Senior Notes to Common Stock (Detail) - Convertible Debt - 0.25% Convertible Senior Notes due April 1, 2018	3 Months Ended
	Apr. 30, 2016$ / shares
Debt Instrument [Line Items]
Conversion Rate per $1,000 Par Value	0.0150512
Initial Conversion Price per Share	$ 66.44

Debt - Schedule of Convertible

Debt - Schedule of Convertible Senior Notes (Detail) - Convertible Debt - 0.25% Convertible Senior Notes due April 1, 2018 - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016	Mar. 31, 2013
Debt Instrument [Line Items]
Principal	$ 1,150,000	$ 1,150,000
Less: debt discount, net	(48,753)	(54,941)
Less: debt issuance cost	(6,143)	(6,962)
Net carrying amount	$ 1,095,104	$ 1,088,097
Contractual interest rate	0.25%		0.25%
Effective interest rates of Senior Notes	2.53%

Debt - Summary of Hedge Notes (

Debt - Summary of Hedge Notes (Detail) - Convertible Debt - 0.25% Note Hedges $ in Thousands	3 Months Ended
	Apr. 30, 2016USD ($)shares
Derivatives, Fair Value [Line Items]
Purchase | $	$ 153,800
Shares | shares	17,308,880

Debt - Components of Warrants (

Debt - Components of Warrants (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 30, 2016USD ($)$ / sharesshares
Class of Warrant or Right [Line Items]
Warrants (in shares)	17,308,880
Convertible Debt | 0.25% Warrants
Class of Warrant or Right [Line Items]
Proceeds | $	$ 84,800
Warrants (in shares)	17,308,880
Strike Price (in dollars per share) | $ / shares	$ 90.40

Debt - Schedule of Interest Exp

Debt - Schedule of Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Debt Disclosure [Abstract]
Contractual interest expense	$ 2,814	$ 3,350
Amortization of debt issuance costs	1,028	1,018
Amortization of debt discount	6,226	6,059
Debt Instrument, Interest Expense, Total	$ 10,068	$ 10,427

Other Balance Sheet Accounts -

Other Balance Sheet Accounts - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid income taxes	$ 24,329	$ 22,044
Other taxes receivable	28,117	27,341
Prepaid expenses and other current assets	254,179	201,209
Prepaid expenses and other current assets	$ 306,625	$ 250,594

Other Balance Sheet Accounts 59

Other Balance Sheet Accounts - Schedule of Capitalized Software Costs (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Property, Plant and Equipment [Line Items]
Capitalized software costs	$ 407,030	$ 384,258
Capitalized internal-use software development costs, net of accumulated amortization of $201,292 and $186,251, respectively
Property, Plant and Equipment [Line Items]
Capitalized software costs	131,376	123,065
Accumulated amortization	201,292	186,251
Acquired developed technology, net of accumulated amortization of $505,147 and $481,118, respectively
Property, Plant and Equipment [Line Items]
Capitalized software costs	275,654	261,193
Accumulated amortization	$ 505,147	$ 481,118

Other Balance Sheet Accounts 60

Other Balance Sheet Accounts - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Purchased intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	$ 16.5	$ 20
Acquired intellectual property
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	1.7	1.7
Capitalized internal-use software development costs
Finite-Lived Intangible Assets [Line Items]
Capitalized software amortization expense	15	11.3
Capitalized stock based compensation	1.8	1.6
Acquired developed technology
Finite-Lived Intangible Assets [Line Items]
Capitalized software amortization expense	$ 24	$ 21.9

Other Balance Sheet Accounts 61

Other Balance Sheet Accounts - Goodwill (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2016
Goodwill [Roll Forward]
Balance as of January 31, 2016		$ 3,849,937
Finalization of acquisition date fair values		(63)
Balance as of April 30, 2016	$ 4,129,656	4,129,656
MetaMind [Member]
Goodwill [Roll Forward]
Goodwill acquired	$ 31,200	31,242
Other Business Combination
Goodwill [Roll Forward]
Goodwill acquired		$ 30,554

Other Balance Sheet Accounts 62

Other Balance Sheet Accounts - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Deferred income taxes, noncurrent, net	$ 17,597	$ 15,986
Long-term deposits	23,650	19,469
Other	89,652	66,310
Other assets, net	409,185	370,910
Accounting Standards Update 2015-03 [Member] | Other Noncurrent Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Unamortized debt issuance costs		7,900
Purchased intangible assets, net of accumulated amortization of $228,704 and $212,248, respectively
Finite-Lived Intangible Assets [Line Items]
Purchase and acquired intangible assets	267,722	258,580
Accumulated amortization	228,704	212,248
Acquired intellectual property, net of accumulated amortization of $24,186 and $22,439, respectively
Finite-Lived Intangible Assets [Line Items]
Purchase and acquired intangible assets	10,564	10,565
Accumulated amortization	$ 24,186	$ 22,439

Other Balance Sheet Accounts 63

Other Balance Sheet Accounts - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Payables and Accruals [Abstract]
Accounts payable	$ 54,583	$ 71,481
Accrued compensation	386,410	554,502
Accrued other liabilities	433,631	454,287
Accrued income and other taxes payable	154,550	205,781
Accrued professional costs	30,095	33,814
Accrued rent	15,789	14,071
Financing obligation - leased facility, current	18,139	15,402
Accrued expenses and other current liabilities	$ 1,093,197	$ 1,349,338

Other Balance Sheet Accounts 64

Other Balance Sheet Accounts - Schedule of Other Non current Liabilities (Detail) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Payables and Accruals [Abstract]
Deferred income taxes and income taxes payable	$ 85,579	$ 85,996
Financing obligation - leased facility	202,246	196,711
Long-term lease liabilities and other	551,900	550,358
Other noncurrent liabilities	$ 839,725	$ 833,065

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Jan. 31, 2006	Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2016	Apr. 30, 2016	Jul. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		4 years
Total intrinsic value of the options exercised during the period		$ 28.6	$ 113.3
Weighted-average remaining contractual life of vested and expected to vest options (in years)		4 years 8 months 12 days
Options vested		10,372,672			10,372,672
Weighted average exercise price vested		$ 43.12			$ 43.12
Weighted-average contractual life of vested and expected to vest options (in years)		3 years 3 months 18 days
Intrinsic value of vested options		$ 339			$ 339
Weighted-average exercise price		$ 0.001			$ 0.001
Restricted stock units, vesting period (in years)		4 years
Weighted-average grant date fair value of the restricted stock units issued		$ 69.29	$ 67.17
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life of stock options (in years)	10 years				7 years	5 years
Performance restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount withheld on behalf of employees for future purchases		$ 93.9			$ 93.9

Stockholders' Equity - Stock Ac

Stockholders' Equity - Stock Activity (Detail)	3 Months Ended
	Apr. 30, 2016USD ($)$ / sharesshares
Shares available for grant
Shares Available for Grant, Balance	46,879,908
Shares Available for Grant, Options granted under all plans	(867,292)
Shares Available for Grant, Exercised	0
Shares Available for Grant, Expired	(28,916)
Shares Available for Grant, Cancelled	250,573
Shares Available for Grant, Balance	45,044,696
Outstanding Stock Options
Outstanding Stock Options, Balance	26,258,798
Outstanding Stock Options	867,292
Outstanding Stock Options, Exercised	(854,362)
Outstanding Stock Options, Plan shares expired
Outstanding Stock Options, Cancelled	(250,573)
Outstanding Stock Options, Balance	26,021,155
Outstanding Stock Options, Vested or expected to vest	23,947,836
Outstanding Stock Options, Exercisable	10,372,672
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Balance | $ / shares	$ 56.26
Weighted- Average Exercise Price, Options | $ / shares	40.58
Weighted- Average Exercise Price, Exercised | $ / shares	38.23
Weighted- Average Exercise Price, Cancelled | $ / shares	$ 67.73
Weighted- Average Exercise Price, Expired | $ / shares
Weighted- Average Exercise Price, Balance | $ / shares	$ 56.22
Weighted- Average Exercise Price, Vested or expected to vest | $ / shares	55.11
Weighted- Average Exercise Price, Exercisable | $ / shares	$ 43.12
Aggregate Intrinsic Value
Weighted- Average Exercise Price, Balance | $	$ 538,367,465
Weighted- Average Exercise Price, Vested or expected to vest | $	519,312,755
Weighted- Average Exercise Price, Exercisable | $	$ 338,995,305
Restricted stock units and awards
Shares available for grant
Shares Available for Grant, Restricted stock activity	(1,821,324)
Outstanding Stock Options
Outstanding Stock Options
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options | $ / shares
Performance restricted stock units
Shares available for grant
Shares Available for Grant, Restricted stock activity	0
Outstanding Stock Options
Outstanding Stock Options
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options | $ / shares
Stock grants to board and advisory board members
Shares available for grant
Shares Available for Grant, Stock grants to board and advisory board members	(44,026)
Outstanding Stock Options
Outstanding Stock Options
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options | $ / shares
2013 Equity Incentive Plan
Shares available for grant
Shares Available for Grant, Increase in shares authorized	80,332
Shares Available for Grant, Balance	44,462,309
Outstanding Stock Options
Outstanding Stock Options, Increase in shares authorized
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options | $ / shares
2014 Inducement Equity Incentive Plan
Shares available for grant
Shares Available for Grant, Increase in shares authorized	11,049
Shares Available for Grant, Balance	446,533
Outstanding Stock Options
Outstanding Stock Options, Increase in shares authorized
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options | $ / shares
Acquired equity plans
Shares available for grant
Shares Available for Grant, Increase in shares authorized	584,392
Shares Available for Grant, Balance	135,854
Outstanding Stock Options
Outstanding Stock Options, Increase in shares authorized
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options | $ / shares

Stockholders' Equity - Stock Op

Stockholders' Equity - Stock Options Outstanding (Detail)	3 Months Ended
	Apr. 30, 2016$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Number Outstanding | shares	26,021,155
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	4 years 9 months 18 days
Weighted- Average Exercise Price, Options Outstanding	$ 56.22
Options Exercisable, Number of Shares | shares	10,372,672
Options Exercisable, Weighted- Average Exercise Price	$ 43.12
$0.86 to $37.95
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	0.86
Range of Exercise Prices, Maximum	$ 37.95
Options, Number Outstanding | shares	4,461,075
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	2 years 3 months 18 days
Weighted- Average Exercise Price, Options Outstanding	$ 27.45
Options Exercisable, Number of Shares | shares	3,691,607
Options Exercisable, Weighted- Average Exercise Price	$ 28.16
$38.03 to $52.14
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	38.03
Range of Exercise Prices, Maximum	$ 52.14
Options, Number Outstanding | shares	2,480,093
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	2 years
Weighted- Average Exercise Price, Options Outstanding	$ 39.87
Options Exercisable, Number of Shares | shares	1,934,518
Options Exercisable, Weighted- Average Exercise Price	$ 39.57
$ 52.30
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	52.30
Range of Exercise Prices, Maximum	$ 52.30
Options, Number Outstanding | shares	3,684,201
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	4 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$ 52.30
Options Exercisable, Number of Shares | shares	2,012,682
Options Exercisable, Weighted- Average Exercise Price	$ 52.30
$53.60 to $57.79
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	53.60
Range of Exercise Prices, Maximum	$ 57.79
Options, Number Outstanding | shares	1,414,340
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	5 years 1 month 6 days
Weighted- Average Exercise Price, Options Outstanding	$ 55.31
Options Exercisable, Number of Shares | shares	514,062
Options Exercisable, Weighted- Average Exercise Price	$ 55.35
$ 59.34
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	59.34
Range of Exercise Prices, Maximum	$ 59.34
Options, Number Outstanding | shares	6,138,145
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	5 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$ 59.34
Options Exercisable, Number of Shares | shares	2,015,280
Options Exercisable, Weighted- Average Exercise Price	$ 59.34
$59.37 to $77.86
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	59.37
Range of Exercise Prices, Maximum	$ 77.86
Options, Number Outstanding | shares	2,326,108
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	6 years 2 months 12 days
Weighted- Average Exercise Price, Options Outstanding	$ 68.62
Options Exercisable, Number of Shares | shares	204,523
Options Exercisable, Weighted- Average Exercise Price	$ 65.72
$ 80.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	80.99
Range of Exercise Prices, Maximum	$ 80.99
Options, Number Outstanding | shares	5,517,193
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	6 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$ 80.99
Options Exercisable, Number of Shares | shares	0
Options Exercisable, Weighted- Average Exercise Price	$ 0

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Restricted Stock Activity (Detail)	3 Months Ended
	Apr. 30, 2016USD ($)$ / sharesshares
Restricted Stock Outstanding
Ending Balance	20,409,577
Restricted Stock Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance | $ / shares	$ 0.001
Restricted stock units and awards
Restricted Stock Outstanding
Beginning Balance	21,294,585
Granted, Outstanding	1,468,220
Cancelled, Outstanding	(512,280)
Vested and converted to shares, Outstanding	(1,840,948)
Ending Balance	20,409,577
Expected to vest, Outstanding	17,223,868
Restricted Stock Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance | $ / shares	$ 0.001
Weighted- Average Exercise Price, Restricted Stock Outstanding, Granted | $ / shares	0.001
Weighted- Average Exercise Price, Restricted Stock Outstanding, Cancelled | $ / shares	0.001
Weighted- Average Exercise Price, Restricted Stock Outstanding, Vested and converted to shares | $ / shares	0.001
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance | $ / shares	$ 0.001
Restricted Stock Outstanding Aggregate Intrinsic Value
Aggregate Intrinsic Value, Ending Balance | $	$ 1,547,045,937
Aggregate Intrinsic Value, Expected to vest | $	$ 1,305,569,194

Stockholders' Equity - Shares o

Stockholders' Equity - Shares of Common Stock Available for Future Issuance under Stock Option Plans (Detail) - shares	Apr. 30, 2016	Jan. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	26,021,155	26,258,798
Restricted stock awards and units outstanding (in shares)	20,409,577
Stock available for future grant (in shares)	45,044,696	46,879,908
Convertible senior notes (in shares)	17,308,880
Warrants (in shares)	17,308,880
Total shares available for future grant (in shares)	132,937,984
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant (in shares)	44,462,309
2014 Inducement Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant (in shares)	446,533
Amended and Restated 2004 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant (in shares)	6,844,796
Acquired equity plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant (in shares)	135,854

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Income Tax Disclosure [Abstract]
Provision for income taxes	$ (1,604)	$ 13,981
Income (loss) before provision for income taxes	$ 37,155	$ 18,073
Effective tax rate	(4.00%)	77.00%
Income tax benefit recognized from stock compensation expense	$ 51,400	$ 43,700
Reasonably possible decrease of unrecognized tax benefits	$ 15,000

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Denominator Used in Calculation of Basic and Diluted Loss Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Earnings Per Share [Abstract]
Net income	$ 38,759	$ 4,092
Weighted-average shares outstanding for basic income per share (in shares)	677,514	653,809
Convertible senior notes (in shares)	945	0
Employee stock awards (in shares)	8,340	10,501
Warrants (in shares)	0	0
Adjusted weighted-average shares outstanding and assumed conversions for diluted income per share (in shares)	686,799	664,310

Earnings Per Share - Shares Exc

Earnings Per Share - Shares Excluded from Diluted Earnings or Loss Per Share (Detail) - shares shares in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Employee stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded	21,321	8,801
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded	0	17,309
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded	17,309	17,309

Commitments - Additional Inform

Commitments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Jan. 31, 2016
Other Commitments [Line Items]
Financing obligation - leased facility	$ 202,246	$ 196,711
Total operating lease commitment balance	$ 2,600,000
Purchase commitment term	4 years
Purchase commitment, 2017	$ 70,000
Purchase commitment, 2018	96,000
Purchase commitment, 2019	108,000
Purchase commitment, 2020	126,000
Other Current and Noncurrent Liabilities [Member]
Other Commitments [Line Items]
Financing obligation - leased facility	220,300
Letter of Credit
Other Commitments [Line Items]
Value of outstanding letters of credit	83,800
Facilities Space [Member]
Other Commitments [Line Items]
Total operating lease commitment balance	$ 2,300,000

Commitments - Schedule of Futur

Commitments - Schedule of Future Minimum Lease Payments under Non-Cancelable Operating and Capital Leases (Detail) $ in Thousands	Apr. 30, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under non-cancelable capital leases, Remaining nine months of fiscal 2017	$ 50,960
Future minimum lease payments under non-cancelable capital leases, Fiscal 2018	122,765
Future minimum lease payments under non-cancelable capital leases, Fiscal 2019	115,797
Future minimum lease payments under non-cancelable capital leases, Fiscal 2020	201,579
Future minimum lease payments under non-cancelable capital leases, Fiscal 2021	37
Future minimum lease payments under non-cancelable capital leases, Thereafter	0
Future minimum lease payments under non-cancelable capital leases, Total	491,138
Less: amount representing interest	(42,438)
Present value of capital lease obligations	448,700
Future minimum lease payments under non-cancelable operating leases, Remaining nine months of fiscal 2017	287,083
Future minimum lease payments under non-cancelable operating leases, Fiscal 2018	351,971
Future minimum lease payments under non-cancelable operating leases, Fiscal 2019	299,254
Future minimum lease payments under non-cancelable operating leases, Fiscal 2020	239,804
Future minimum lease payments under non-cancelable operating leases, Fiscal 2021	223,280
Future minimum lease payments under non-cancelable operating leases, Thereafter	1,233,948
Future minimum lease payments under non-cancelable operating leases, Total	2,635,340
Financing Obligation, Building in Progress-Leased Facility, Remaining nine months of fiscal 2017	14,518
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2018	21,437
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2019	21,881
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2020	22,325
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2021	22,770
Financing Obligation, Building in Progress-Leased Facility, Thereafter	233,927
Financing Obligation, Building in Progress-Leased Facility	$ 336,858

Related-Party Transactions (Det

Related-Party Transactions (Details) - Affiliated Entity [Member] $ in Millions	3 Months Ended
	Apr. 30, 2016USD ($)board_memberboard_seatemployee
Related Party Transaction [Line Items]
Number of Company's Board Members that Hold Board Seats in Foundation	1
Number of Board Seats in Foundation	3
Number of Company's Employees that Hold Board Seats in Non-Profit | employee	1
Number Company's Board Members that Hold Board Seats in Non-Profit | board_member	1
Number of Board Seats in Non-Profit Held by Company's Employees and Board Members	3
Number of Board Seats in Non-Profit	9
Value of resources donated to related parties | $	$ 0.8
Value of donated subscriptions to related parties | $	$ 27.8