Salesforce (CRM) 10-Q 22 May 15 2016 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
In Millions, unless otherwise specified	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	30-Apr-15
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Trading Symbol	CRM
Entity Registrant Name	SALESFORCE COM INC
Entity Central Index Key	1108524
Current Fiscal Year End Date	-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	656

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$941,956	$908,117
Short-term marketable securities	77,059	87,312
Accounts receivable, net	926,381	1,905,506
Deferred commissions	208,101	225,386
Prepaid expenses and other current assets	310,983	280,554
Land and building improvements held for sale	140,345	143,197
Total current assets	2,604,825	3,550,072
Marketable securities, noncurrent	903,461	894,855
Property and equipment, net	1,737,094	1,125,866
Deferred commissions, noncurrent	153,018	162,796
Capitalized software, net	421,323	433,398
Goodwill	3,791,583	3,782,660
Other assets, net	754,378	628,320
Restricted cash	0	115,015
Total assets	10,365,682	10,692,982
Current liabilities:
Accounts payable, accrued expenses and other liabilities	928,105	1,103,335
Deferred revenue	3,032,771	3,286,768
Total current liabilities	3,960,876	4,390,103
Convertible 0.25% senior notes, net	1,076,727	1,070,692
Loan assumed on 50 Fremont	198,776	0
Revolving credit facility	0	300,000
Deferred revenue, noncurrent	24,049	34,681
Other noncurrent liabilities	870,051	922,323
Total liabilities	6,130,479	6,717,799
Stockholders’ equity:
Common stock	656	651
Additional paid-in capital	4,864,652	4,604,485
Accumulated other comprehensive loss	-28,352	-24,108
Accumulated deficit	-601,753	-605,845
Total stockholders’ equity	4,235,203	3,975,183
Total liabilities and stockholders’ equity	$10,365,682	$10,692,982

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (Notes Payable to Banks, 0.25% Convertible Senior Notes due April 1, 2018)	Apr. 30, 2015	Jan. 31, 2015
Notes Payable to Banks | 0.25% Convertible Senior Notes due April 1, 2018
Interest percentage of convertible senior notes	0.25%	0.25%

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Apr. 30, 2015		Apr. 30, 2014
Revenues:
Subscription and support	$1,405,287		$1,147,306
Professional services and other	105,880		79,466
Total revenues	1,511,167		1,226,772
Cost of revenues:
Subscription and support	274,241	[1],[2]	208,947	[1],[2]
Professional services and other	107,561	[1],[2]	83,358	[1],[2]
Total cost of revenues	381,802	[1],[2]	292,305	[1],[2]
Gross profit	1,129,365	[1],[2]	934,467	[1],[2]
Operating expenses:
Research and development	222,128	[1],[2]	188,358	[1],[2]
Marketing and sales	736,938	[1],[2]	639,355	[1],[2]
General and administrative	175,811	[1],[2]	162,095	[1],[2]
Operating lease termination resulting from purchase of 50 Fremont, net	-36,617	[1],[2]	0	[1],[2]
Total operating expenses	1,098,260	[1],[2]	989,808	[1],[2]
Income (loss) from operations	31,105		-55,341
Investment income	4,561		1,778
Interest expense	-16,675		-20,359
Other expense (1)(3)	-918	[2],[3]	-10,847	[2],[3]
Income (loss) before provision for income taxes	18,073		-84,769
Provision for income taxes	-13,981		-12,142
Net income (loss)	$4,092		($96,911)
Basic net income (loss) per share (in dollars per share)	$0.01		($0.16)
Diluted net income (loss) per share (in dollars per share)	$0.01		($0.16)
Shares used in computing basic net income (loss) per share (in shares)	653,809		612,512
Shares used in computing diluted net income (loss) per share (in shares)	664,310		612,512
[1]	Amounts include stock-based expense, as follows: Three Months Ended April 30, 2015 2014Cost of revenues $15,381 $11,810Research and development 31,242 27,284Marketing and sales 70,534 67,133General and administrative 25,403 24,865
[2]	Amounts include amortization of purchased intangibles from business combinations, as follows: Three Months Ended April 30, 2015 2014Cost of revenues $19,690 $28,672Marketing and sales 20,027 14,965Other non-operating expense 815 0
[3]	Amount includes approximately $8.5 million loss on conversions of our convertible 0.75% senior notes due January 2015 recognized during the three months ended April 30, 2014.

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Stock-based expenses	$142,560	$131,092
Loss on conversions of convertible senior notes	0	8,529
Cost of revenues
Amortization of purchased intangibles from business combinations	19,690	28,672
Stock-based expenses	15,381	11,810
Marketing and sales
Amortization of purchased intangibles from business combinations	20,027	14,965
Stock-based expenses	70,534	67,133
Research and development
Stock-based expenses	31,242	27,284
Other non-operating expense
Amortization of purchased intangibles from business combinations	815	0
General and administrative
Stock-based expenses	25,403	24,865
Notes Payable to Banks | 0.75% Convertible Senior Notes due January 2015
Loss on conversions of convertible senior notes		$8,500
Interest percentage of convertible senior notes		0.75%

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$4,092	($96,911)
Other comprehensive loss, before tax and net of reclassification adjustments:
Foreign currency translation and other gains (losses)	-1,855	3,115
Unrealized losses on investments	-2,389	-5,497
Other comprehensive loss, before tax	-4,244	-2,382
Tax effect	0	0
Other comprehensive loss, net of tax	-4,244	-2,382
Comprehensive loss	($152)	($99,293)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015		Apr. 30, 2014
Operating activities:
Net income (loss)	$4,092		($96,911)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	127,927		110,808
Amortization of debt discount and transaction costs	5,861		11,791
50 Fremont lease termination, net	-36,617	[1],[2]	0	[1],[2]
Loss on conversions of convertible senior notes	0		8,529
Amortization of deferred commissions	77,155		59,855
Expenses related to employee stock plans	142,560		131,092
Excess tax benefits from employee stock plans	-4,224		-9,041
Changes in assets and liabilities, net of business combinations:
Accounts receivable, net	979,170		676,682
Deferred commissions	-50,092		-40,896
Prepaid expenses and other current assets and other assets	-11,274		4,277
Accounts payable, accrued expenses and other liabilities	-239,072		-185,599
Deferred revenue	-264,629		-197,500
Net cash provided by operating activities	730,857		473,087
Investing activities:
Business combination, net of cash acquired	-12,470		0
Purchase of 50 Fremont land and building	-425,376		0
Deposit for purchase of 50 Fremont land and building	115,015		0
Non-refundable amounts received for sale of land available for sale	2,852		30,000
Strategic investments	-144,462		-16,246
Purchases of marketable securities	-207,225		-250,536
Sales of marketable securities	192,184		79,312
Maturities of marketable securities	14,446		7,198
Capital expenditures	-71,087		-60,098
Net cash used in investing activities	-536,123		-210,370
Financing activities:
Proceeds from employee stock plans	155,015		73,795
Excess tax benefits from employee stock plans	4,224		9,041
Payments on convertible senior notes	0		-283,892
Principal payments on capital lease obligations	-16,825		-10,594
Payments on revolving credit facility and term loan	-300,000		-7,500
Net cash used in financing activities	-157,586		-219,150
Effect of exchange rate changes	-3,309		2,689
Net increase in cash and cash equivalents	33,839		46,256
Cash and cash equivalents, beginning of period	908,117		781,635
Cash and cash equivalents, end of period	941,956		827,891
Cash paid during the period for:
Interest	4,252		8,667
Income taxes, net of tax refunds	10,581		9,994
Non-cash financing and investing activities:
Fixed assets acquired under capital leases	2,960		5,886
Building in progress - leased facility acquired under financing obligation	19,966		12,760
Fair value of loan assumed on 50 Fremont	$198,751		$0
[1]	Amounts include stock-based expense, as follows: Three Months Ended April 30, 2015 2014Cost of revenues $15,381 $11,810Research and development 31,242 27,284Marketing and sales 70,534 67,133General and administrative 25,403 24,865
[2]	Amounts include amortization of purchased intangibles from business combinations, as follows: Three Months Ended April 30, 2015 2014Cost of revenues $19,690 $28,672Marketing and sales 20,027 14,965Other non-operating expense 815 0

Summary_of_Business_and_Signif

Summary of Business and Significant Accounting Policies	3 Months Ended
	Apr. 30, 2015
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 services. The Company is dedicated to helping customers of all sizes and industries worldwide transform themselves into “customer companies” by empowering them to connect with their customers, partners, employees and products in entirely new ways. The Company provides customers with the solutions they need to build a next generation social front office with social and mobile cloud technologies.
	Fiscal Year
	The Company’s fiscal year ends on January 31. References to fiscal 2016, for example, refer to the fiscal year ending January 31, 2016.
	Basis of Presentation
	The accompanying condensed consolidated balance sheet as of April 30, 2015 and the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss and the condensed consolidated statements of cash flows for the three months ended April 30, 2015 and 2014, respectively, are unaudited. The condensed consolidated balance sheet data as of January 31, 2015 was derived from the audited consolidated financial statements that are included in the Company’s Form 10-K for the fiscal year ended January 31, 2015, which was filed with the Securities and Exchange Commission (the “SEC”) on March 6, 2015. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in the Company’s fiscal 2015 Form 10-K.
	The accompanying condensed 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 condensed 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, 2015, and its results of operations, including its comprehensive loss, and its cash flows for the three months ended April 30, 2015 and 2014. All adjustments are of a normal recurring nature. The results for the three months ended April 30, 2015 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2016.
	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 condensed 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 valuation of strategic investments and the determination of other-than-temporary impairments, and
	•	the assessment of determination of impairment of long-lived assets (property and equipment, goodwill and identified intangibles).
	Actual results could differ materially from those estimates.
	Principles of Consolidation
	The condensed 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 condensed 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. Although the Company deposits its cash with multiple financial institutions, its deposits, at times, may exceed federally insured limits. 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, 2015 and January 31, 2015. No single customer accounted for five percent or more of total revenue during the three months ended April 30, 2015 and 2014.
	Geographic Locations
	As of April 30, 2015 and January 31, 2015, assets located outside the Americas were 13 percent and 12 percent of total assets, respectively.
	Revenues by geographical region are as follows (in thousands):
			Three Months Ended April 30,
			2015			2014
	Americas		$	1,115,120		$	876,377
	Europe		258,805			230,810
	Asia Pacific		137,242			119,585
			$	1,511,167		$	1,226,772
	Americas revenue attributed to the United States was approximately 95 percent and 94 percent during the three months ended April 30, 2015 and 2014, respectively. No other country represented more than ten percent of total revenue during the three months ended April 30, 2015 and 2014.
	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 majority of the Company’s professional services contracts are on a time and material 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. 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 condensed 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 condensed consolidated statements of comprehensive 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:
Computer, equipment and software	3 to 9 years
Furniture and fixtures	5 years
Leasehold improvements	Shorter of the estimated lease term or 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, Intangible Assets, Long-Lived Assets and 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.
The Company evaluates the recoverability of its long-lived assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets 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
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 condensed consolidated 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 of the operating expense.
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 Company recognizes stock-based expenses related to shares issued pursuant to its 2004 Employee Stock Purchase Plan (“ESPP”) 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
		April 30,
Stock Options		2015				2014
Volatility		37.4		%		37		%
Estimated life		3.6 years				3.5 years
Risk-free interest rate		1.13-1.36		%		1.20-1.39		%
Weighted-average fair value per share of grants		$	19.52			$	16.93
There were no stock purchase rights granted under the ESPP in the three months ended April 30, 2015 or 2014 as these stock purchase rights are only granted in June and December.
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.
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 condensed 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 condensed consolidated statements of comprehensive loss. Foreign currency transaction gains and losses are included in net 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 liabilities related to such obligations in the accompanying condensed 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 Pronouncement
In May 2014, the Financial Accounting Standards Board (“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. In April 2015, the FASB proposed a one-year deferral of the effective date for the new revenue reporting standard for entities reporting under U.S. GAAP. 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 condensed consolidated financial statements and has not determined whether the effect will be material to either its revenue results or its deferred commissions balances.

Investments

Investments	3 Months Ended
	Apr. 30, 2015
Investments Schedule [Abstract]
Investments	Investments
	Marketable Securities
	At April 30, 2015, marketable securities consisted of the following (in thousands):
	Investments classified as Marketable Securities	Amortized				Unrealized				Unrealized			Fair Value
		Cost				Gains				Losses
	Corporate notes and obligations	$	582,682			$	1,887			$	(327	)	$	584,242
	U.S. treasury securities	85,977				162				(12		)	86,127
	Mortgage backed obligations	65,247				142				(554		)	64,835
	Asset backed securities	170,983				142				(76		)	171,049
	Municipal securities	36,418				98				(19		)	36,497
	Foreign government obligations	524				17				0			541
	U.S. agency obligations	15,832				12				(3		)	15,841
	Covered bonds	20,893				495				0			21,388
	Total marketable securities	$	978,556			$	2,955			$	(991	)	$	980,520
	At January 31, 2015, marketable securities consisted of the following (in thousands):
	Investments classified as Marketable Securities	Amortized				Unrealized				Unrealized			Fair Value
		Cost				Gains				Losses
	Corporate notes and obligations	$	605,724			$	3,031			$	(481	)	$	608,274
	U.S. treasury securities	73,226				257				(1		)	73,482
	Mortgage backed obligations	44,181				159				(415		)	43,925
	Asset backed securities	120,049				131				(43		)	120,137
	Municipal securities	36,447				115				(25		)	36,537
	Foreign government obligations	12,023				278				0			12,301
	U.S. agency obligations	19,488				26				(4		)	19,510
	Covered bonds	66,816				1,185				0			68,001
	Total marketable securities	$	977,954			$	5,182			$	(969	)	$	982,167
	The duration of the investments classified as marketable securities is as follows (in thousands):
		As of
		April 30,				January 31,
		2015				2015
	Recorded as follows:
	Short-term (due in one year or less)	$	77,059			$	87,312
	Long-term (due after one year)	903,461				894,855
		$	980,520			$	982,167
	As of April 30, 2015, the following marketable securities were in an unrealized loss position (in thousands):
		Less than 12 Months								12 Months or Greater						Total
		Fair Value				Unrealized				Fair Value			Unrealized			Fair Value		Unrealized
						Losses							Losses					Losses
	Corporate notes and obligations	$	201,863			$	(312	)		$	5,853		$	(15	)	$	207,716	$	(327	)
	U.S. treasury securities	27,419				(12		)		0			0			27,419		(12		)
	Mortgage backed obligations	48,289				(460		)		7,081			(94		)	55,370		(554		)
	Asset backed securities	85,730				(70		)		3,484			(6		)	89,214		(76		)
	Municipal securities	13,151				(19		)		0			0			13,151		(19		)
	U.S. agency obligations	2,172				(3		)		0			0			2,172		(3		)
		$	378,624			$	(876	)		$	16,418		$	(115	)	$	395,042	$	(991	)
	The unrealized losses for each of the fixed rate marketable securities were less than $100,000. 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, 2015. 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, 2015 and indicates the fair value hierarchy of the valuation (in thousands):
	Description	Quoted Prices in				Significant  Other				Significant			Balances as of
		Active Markets				Observable				Unobservable			30-Apr-15
		for Identical Assets				Inputs				Inputs
		(Level 1)				(Level 2)				(Level 3)
	Cash equivalents (1):
	Time deposits	$	0			$	57,849			$	0		$	57,849
	Money market mutual funds	40,432				0				0			40,432
	Marketable securities:
	Corporate notes and obligations	0				584,242				0			584,242
	U.S. treasury securities	0				86,127				0			86,127
	Mortgage backed obligations	0				64,835				0			64,835
Asset backed securities	0				171,049				0			171,049
Municipal securities	0				36,497				0			36,497
Foreign government obligations	0				541				0			541
U.S. agency obligations	0				15,841				0			15,841
Covered bonds	0				21,388				0			21,388
Foreign currency derivative contracts (2)	0				9,465				0			9,465
Total Assets	$	40,432			$	1,047,834			$	0		$	1,088,266
Liabilities
Foreign currency derivative contracts (3)	$	0			$	2,581			$	0		$	2,581
Total Liabilities	$	0			$	2,581			$	0		$	2,581
_____________
(1)Included in “cash and cash equivalents” in the accompanying condensed consolidated balance sheet as of April 30, 2015, in addition to $843.7 million of cash.
(2)Included in “prepaid expenses and other current assets” in the accompanying condensed consolidated balance sheet as of April 30, 2015.
(3)Included in “accounts payable, accrued expenses and other liabilities” in the condensed consolidated balance sheet as of April 30, 2015.
The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2015 and indicates the fair value hierarchy of the valuation (in thousands):
Description	Quoted Prices in				Significant Other				Significant			Balances as of
	Active Markets				Observable Inputs (Level 2)				Unobservable			January 31, 2015
	for Identical Assets								Inputs
	(Level 1)								(Level 3)
Cash equivalents (1):
Time deposits	$	0			$	292,487			$	0		$	292,487
Money market mutual funds	13,983				0				0			13,983
Marketable securities:
Corporate notes and obligations	0				608,274				0			608,274
U.S. treasury securities	0				73,482				0			73,482
Mortgage backed obligations	0				43,925				0			43,925
Asset backed securities	0				120,137				0			120,137
Municipal securities	0				36,537				0			36,537
Foreign government obligations	0				12,301				0			12,301
U.S. agency obligations	0				19,510				0			19,510
Covered bonds	0				68,001				0			68,001
Foreign currency derivative contracts (2)	0				10,611				0			10,611
Total Assets	$	13,983			$	1,285,265			$	0		$	1,299,248
Liabilities
Foreign currency derivative contracts (3)	$	0			$	5,694			$	0		$	5,694
Total Liabilities	$	0			$	5,694			$	0		$	5,694
______________
(1)Included in “cash and cash equivalents” in the accompanying condensed consolidated balance sheet as of January 31, 2015, in addition to $601.6 million of cash.
(2)Included in “prepaid expenses and other current assets” in the accompanying condensed consolidated balance sheet as of January 31, 2015.
(3)Included in “accounts payable, accrued expenses and other liabilities” in the accompanying condensed consolidated balance sheet as of January 31, 2015.
Derivative Financial Instruments
The Company enters into foreign currency derivative contracts with financial institutions to reduce the risk that its cash flows and earnings will be adversely affected by foreign currency exchange rate fluctuations. 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, 2015 and January 31, 2015, the foreign currency derivative contracts that were not settled were recorded at fair value on the condensed 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
	30-Apr-15				31-Jan-15
Notional amount of foreign currency derivative contracts	$	731,148			$	942,086
Fair value of foreign currency derivative contracts	$	6,884			$	4,917
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	30-Apr-15				31-Jan-15
Derivative Assets
Derivatives not designated as hedging instruments:
Foreign currency derivative contracts	Prepaid expenses and other current assets	$	9,465			$	10,611
Derivative Liabilities
Derivatives not designated as hedging instruments:
Foreign currency derivative contracts	Accounts payable, accrued expenses and other liabilities	$	2,581			$	5,694
The effect of the derivative instruments not designated as hedging instruments on the condensed consolidated statements of operations during the three months ended April 30, 2015 and 2014, respectively, are summarized below (in thousands):
Derivatives Not Designated as Hedging Instruments	Gains (Losses) on Derivative Instruments
	Recognized in Income
			Three Months Ended April 30,
	Location		2015				2014
Foreign currency derivative contracts	Other income (expense)		$	11,459			$	(12	)
Strategic Investments
As of April 30, 2015, the Company has four investments in marketable equity securities measured using quoted prices in their respective active markets and certain interests in non-marketable equity and debt securities that are collectively considered strategic investments. As of April 30, 2015, the fair value of the Company’s marketable equity securities of $17.7 million includes an unrealized gain of $12.9 million. As of January 31, 2015, the Company had four investments in marketable equity securities that had a fair value of $17.8 million, which included an unrealized gain of $13.1 million. These investments are recorded at fair value in other assets, net on the condensed consolidated balance sheets.
The Company’s interest in non-marketable equity and debt securities consists of noncontrolling equity and debt 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, 2015 and January 31, 2015, the carrying value of the Company’s investments in privately-held companies was $301.0 million and $158.0 million, respectively. These investments are recorded in other assets, net on the condensed consolidated balance sheets. The estimated fair value of the Company's investments in privately-held companies was $452.0 million as of April 30, 2015. The estimated fair value of the Company's investments in privately-held companies was $280.0 million as of January 31, 2015.
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,
		2015				2014
Interest income		$	3,049			$	1,764
Realized gains		2,128				117
Realized losses		(616		)		(103		)
Total investment income		$	4,561			$	1,778
Reclassification adjustments out of accumulated other comprehensive loss into net income (loss) were immaterial for the three months ended April 30, 2015 and 2014, respectively.

Property_and_Equipment

Property and Equipment	3 Months Ended
	Apr. 30, 2015
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment
	Property and Equipment
	Property and equipment consisted of the following (in thousands):
		As of
		30-Apr-15			31-Jan-15
	Land	$	183,888		$	0
	Buildings	572,164			125,289
	Computers, equipment and software	1,203,411			1,171,762
	Furniture and fixtures	75,726			71,881
	Leasehold improvements	394,674			376,761
		2,429,863			$	1,745,693
	Less accumulated depreciation and amortization	(692,769		)	(619,827		)
		$	1,737,094		$	1,125,866
	Depreciation and amortization expense totaled $72.5 million and $56.4 million during the three months ended April 30, 2015 and 2014, respectively.
	Computers, equipment and software at April 30, 2015 and January 31, 2015 included a total of $737.8 million and $734.7 million acquired under capital lease agreements, respectively. Accumulated amortization relating to computers, equipment and software under capital leases totaled $233.3 million and $206.7 million, respectively, at April 30, 2015 and January 31, 2015. Amortization of assets under capital leases is included in depreciation and amortization expense.
	In April 2014, the Company entered into an agreement to sell 8.8 net acres of undeveloped real estate in San Francisco, California, and a portion of associated perpetual parking rights, for which the Company received a nonrefundable deposit in the amount of $30.0 million. As of April 30, 2015, these 8.8 net acres and perpetual parking rights met the criteria to be classified as held for sale. As a result, the Company classified this portion of the Company's land and building improvements, which totaled $137.7 million, and the perpetual parking rights of $5.5 million, net of $2.9 million reimbursed for property taxes and other items, as land and building improvements held for sale in the current assets section of the accompanying condensed consolidated balance sheets. The sale of this portion of the Company's undeveloped real estate is expected to close within twelve months and is subject to certain closing conditions. As of April 30, 2015, the fair value of the Company's land, building improvements and perpetual parking rights, based on the expected sale proceeds, exceeds the carrying value.
	In December 2012, 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. The space rented is for the total office space available in the building, which is in the process of being constructed. 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 of April 30, 2015, the Company had capitalized $136.5 million of construction costs, based on the construction costs incurred to date by the landlord, and recorded a corresponding noncurrent financing obligation liability of $136.5 million. The financing obligation carrying value also includes $8.3 million of tenant improvement obligations offset by $0.4 million of imputed interest. The total expected financing obligation associated with this lease upon completion of the construction of the building, inclusive of the amounts currently recorded, is $335.8 million, including interest (see Note 10 “Commitments” for future commitment details). The obligation will be settled through monthly lease payments to the landlord in phases as the office space becomes ready for occupancy. In April 2015, the building was placed into service.
	There was no impairment of long-lived assets during the three months ended April 30, 2015 and 2014, respectively.

Business_Combinations

Business Combinations	3 Months Ended
	Apr. 30, 2015
Business Combinations [Abstract]
Business Combinations	Business Combinations
	50 Fremont
	In February 2015, the Company acquired 50 Fremont Street, a 41-story building totaling approximately 817,000 rentable square feet located in San Francisco, California (“50 Fremont”). At the time of the acquisition, the Company was leasing approximately 500,000 square feet of the available space in 50 Fremont. As of April 30, 2015, the Company occupied approximately 515,000 square feet. The Company acquired 50 Fremont for the purpose of expanding its global headquarters in San Francisco. Pursuant to the acquisition agreement, the Company also acquired existing third-party leases and other intangible property and terminated the Company’s existing office leases with the seller. In accordance with ASC 805, Business Combinations, the Company accounted for the building purchase as a business combination.
	The purchase consideration for the corporate headquarters building was as follows (in thousands):
		Fair Value
	Cash	$	435,189
	Loan assumed on 50 Fremont	200,000
	Prorations due to ownership transfer midmonth	2,411
	Total purchase consideration	$	637,600
	The following table summarizes the fair values of net tangible and intangible assets acquired (in thousands):
		Fair Value
	Building	$	435,390
	Land	183,888
	Termination of salesforce operating lease	9,483
	Acquired lease intangibles	7,590
	Loan assumed on 50 Fremont fair market value adjustment	1,249
	Total	$	637,600
	To fund the purchase of 50 Fremont, the Company used $115.0 million of restricted cash that the Company had on the balance sheet as of January 31, 2015.
	In connection with the purchase, the Company recognized a net non-cash gain totaling approximately $36.6 million on the termination of the lease signed in January 2012. This amount reflects a gain of $46.1 million for the reversal of tenant incentives provided from the previous landlord at the inception of the lease and a loss of $9.5 million related to the termination of the Company's operating lease. The tax impact as a result of the difference between tax and book basis of the building is insignificant after considering the impact of the Company's valuation allowance. These amounts above have been included in the Company's condensed consolidated statements of operations and condensed consolidated balance sheets. The Company has included the rental income from third party leases with other tenants in the building, and the proportionate share of building expenses for those leases, in other expense in the Company's condensed consolidated results of operations from the date of acquisition. These amounts are recorded in other expense as this net rental income is not part of our core operations. These amounts were not material for the periods presented. The Company expects to finalize the depreciable life of the building as soon as practicable, but not later than one year from the acquisition date.
	Other Business Combination
	During the three months ended April 30, 2015, the Company acquired one company for an aggregate of $12.4 million in cash, net of cash acquired, and has included the financial results of this company in its condensed consolidated financial statements from the date of acquisition. The Company accounted for this transaction as a business combination. In allocating the purchase consideration based on estimated fair values, the Company recorded $8.9 million of goodwill. Some of this goodwill balance is not deductible for U.S. income tax purposes.
	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, 2015	$	3,782,660
	Other business combination	8,923
	Balance as of April 30, 2015	$	3,791,583

Debt

Debt

3 Months Ended

Apr. 30, 2015

Debt Disclosure [Abstract]

Debt

Debt

Convertible Senior Notes

Par Value Outstanding

Equity

Liability Component of Par Value as of

(In thousands)

Component Recorded at Issuance

April 30,

January 31,

2015

2015

0.25% Convertible Senior Notes due April 1, 2018

$

1,150,000

$

122,421

-1

$

1,076,727

$

1,070,692

___________

(1)This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes.

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

Initial

Convertible Date

Rate per $1,000

Conversion

Par Value

Price per

Share

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,

2015

2015

Liability component :

Principal:

0.25% Senior Notes (1)

$

1,150,000

$

1,150,000

Less: debt discount, net

0.25% Senior Notes (2)

(73,273

)

(79,308

)

Net carrying amount

$

1,076,727

$

1,070,692

(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 condensed 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.

The total estimated fair value of the Company’s 0.25% Senior Notes at April 30, 2015 was $1.4 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 2016.

Based on the closing price of the Company’s common stock of $72.82 on April 30, 2015, the if-converted value of the 0.25% Senior Notes exceeded their principal amount by approximately $110.4 million. Based on the terms of the 0.25% Senior Notes, the Senior Notes were not convertible for the three months ended April 30, 2015.

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% 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% Notes. The 0.25% Note Hedges are intended to reduce the potential economic dilution upon conversion of the 0.25% Notes in the event that the market value per share of the Company’s common stock, as measured under the 0.25% Notes, at the time of exercise is greater than the conversion price of the 0.25% Notes. The 0.25% Note Hedges are separate transactions and are not part of the terms of the 0.25% Notes. Holders of the 0.25% 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

Shares

Strike

(in thousands)

Price

0.25% Warrants

March 2013

$

84,800

17,308,880

$

90.4

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% Notes or the 0.25% Note Hedges. Holders of the 0.25% Notes and 0.25% Note Hedges will not have any rights with respect to the 0.25% Warrants.

Revolving Credit Facility

In October 2014, the Company entered into an agreement (the “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”). Immediately upon closing, the Company borrowed $300.0 million under 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, 2015.

In March 2015, the Company paid down $300.0 million of outstanding borrowings under the Credit Facility. There are currently no outstanding borrowings held under the Credit Facility as of April 30, 2015.

The weighted average interest rate on borrowings under the Credit Facility was 1.6% for the period beginning in October 2014 and ended April 30, 2015.

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 requires interest only payments with the remaining principal due at maturity. 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, 2015.

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 Notes, the Credit Facility and the Loan prior to capitalization of interest (in thousands):

Three Months Ended April 30,

2015

2014

Contractual interest expense

$

3,350

$

2,903

Amortization of debt issuance costs

1,018

1,228

Amortization of debt discount

6,059

10,984

$

10,427

$

15,115

Other_Balance_Sheet_Accounts

Other Balance Sheet Accounts	3 Months Ended
	Apr. 30, 2015
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,
		2015		2015
	Deferred income taxes, net	$	44,342	$	35,528
	Prepaid income taxes	21,362		21,514
	Customer contract asset	10,492		16,620
	Other taxes receivable	25,592		27,540
	Prepaid expenses and other current assets	209,195		179,352
		$	310,983	$	280,554
	Customer contract asset reflects future billings of amounts that are contractually committed by ExactTarget’s existing customers as of the acquisition date in July 2013 that will be billed in the next 12 months. As the Company bills these customers this balance will reduce and accounts receivable will increase.
	Capitalized Software, net
	Capitalized software consisted of the following (in thousands):
		As of
		April 30,		January 31,
		2015		2015
	Capitalized internal-use software development costs, net of accumulated amortization of $147,646 and $136,314, respectively	$	102,430	$	96,617
	Acquired developed technology, net of accumulated amortization of $414,634 and $392,736, respectively	318,893		336,781
		$	421,323	$	433,398
	Capitalized internal-use software amortization expense totaled $11.3 million and $8.3 million for the three months ended April 30, 2015 and 2014, respectively. Acquired developed technology amortization expense totaled $21.9 million and $30.4 million for the three months ended April 30, 2015 and 2014, respectively.
	The Company capitalized $1.6 million and $1.0 million of stock-based expenses related to capitalized internal-use software development and deferred professional services during the three months ended April 30, 2015 and 2014, respectively.
	Other Assets, net
	Other assets consisted of the following (in thousands):
		As of
		April 30,		January 31,
		2015		2015
	Deferred income taxes, noncurrent, net	$	8,930	$	9,275
	Long-term deposits	19,163		19,715
	Purchased intangible assets, net of accumulated amortization of $150,963 and $130,968, respectively	317,565		329,971
	Acquired intellectual property, net of accumulated amortization of $17,409 and $15,695, respectively	15,595		15,879
	Strategic investments	318,716		175,774
	Customer contract asset	407		1,447
	Other	74,002		76,259
		$	754,378	$	628,320
	Customer contract asset reflects future billings of amounts that were contractually committed by ExactTarget's existing customers as of the acquisition date in July 2013. As the Company bills these customers, this balance will decrease and accounts receivable will increase.
	Purchased intangible assets amortization expense for the three months ended April 30, 2015 and 2014 was $20.0 million and $15.2 million, respectively. Acquired intellectual property amortization expense for the three months ended April 30, 2015 and 2014 was $1.7 million and $1.2 million, respectively.
	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,
		2015		2015
	Accounts payable	$	60,227	$	95,537
	Accrued compensation	308,589		457,102
	Accrued other liabilities	380,227		321,032
	Accrued income and other taxes payable	128,734		184,844
	Accrued professional costs	27,814		16,889
	Customer liability, current	10,561		13,084
	Accrued rent	11,953		14,847
		$	928,105	$	1,103,335
	Customer liability reflects the legal obligation to provide future services that are contractually committed to ExactTarget’s existing customers but unbilled as of the acquisition date in July 2013. As these services are invoiced, this balance will decrease and deferred revenue will increase.
	Other Noncurrent Liabilities
	Other noncurrent liabilities consisted of the following (in thousands):
		As of
		April 30,		January 31,
		2015		2015
	Deferred income taxes and income taxes payable	$	106,499	$	94,396
	Customer liability, noncurrent	288		1,026
	Financing obligation, building in progress-leased facility	145,255		125,289
	Long-term lease liabilities and other	618,009		701,612
		$	870,051	$	922,323

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Apr. 30, 2015
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. Offerings under the ESPP commenced in December 2011.
	As of April 30, 2015, $70.5 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.
	Stock activity excluding the ESPP is as follows:
				Options Outstanding
		Shares		Outstanding		Weighted-			Aggregate
		Available for		Stock		Average			Intrinsic Value
		Grant		Options		Exercise Price
	Balance as of January 31, 2015	30,789,538		29,458,361		$	44.36
	Increase in shares authorized:
	2013 Equity Incentive Plan	908,405		0		0
	2014 Inducement Equity Incentive Plan	109,666		0		0
	Options granted under all plans	(597,589	)	597,589		66.98
	Restricted stock activity	(653,021	)	0		0
	Stock grants to board and advisory board members	(53,817	)	0		0
	Exercised	0		(3,365,914	)	33.54
	Plan shares expired	(858,610	)	0		0
	Canceled	782,733		(782,733	)	43.38
	Balance as of April 30, 2015	30,427,305		25,907,303		$	46.32		$	686,590,080
	Vested or expected to vest			24,031,621		$	45.64		$	653,176,385
	Exercisable as of January 31, 2015			9,224,356		$	35.38		$	345,386,983
	The total intrinsic value of the options exercised during the three months ended April 30, 2015 and 2014 was $113.3 million and $68.8 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 4.4 years.
	As of April 30, 2015, options to purchase 9,224,356 shares were vested at a weighted average exercise price of $35.38 per share and had a remaining weighted-average contractual life of approximately 2.6 years. The total intrinsic value of these vested options as of April 30, 2015 was $345.4 million.
	The following table summarizes information about stock options outstanding as of April 30, 2015:
			Options Outstanding						Options Exercisable
	Range of Exercise		Number		Weighted-	Weighted-			Number of		Weighted-
	Prices		Outstanding		Average	Average			Shares		Average
					Remaining	Exercise					Exercise
					Contractual Life	Price					Price
					(Years)
	$0.86 to $27.56		3,757,745		2.9	$	22.85		2,777,045		$	22.62
	$27.66 to $37.95		4,583,438		1.7	36.02			3,377,985		35.78
	$38.03 to $52.14		3,020,285		3	39.94			1,484,315		39.65
	52.3		4,602,478		5.6	52.3			1,392,231		52.3
	$53.60 to $57.79		1,881,361		6.1	55.21			163,751		55.93
	$59.34		6,747,253		6.6	59.34			0		0
	$59.37 to $67.71		1,314,743		6.6	63.46			29,029		63.26
			25,907,303		4.5	$	46.32		9,224,356		$	35.38
	Restricted stock activity is as follows:
		Restricted Stock Outstanding
		Outstanding		Weighted-			Aggregate
				Average			Intrinsic
				Exercise Price			Value
							(in thousands)
	Balance as of January 31, 2015	23,144,008		$	0.001
	Granted	1,072,962		0.001
	Canceled	(1,011,129	)	0.001
	Vested and converted to shares	(1,828,661	)	0.001
	Balance as of April 30, 2015	21,377,180		$	0.001		$	1,556,686
	Expected to vest	18,423,081					$	1,341,569
	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, 2015 and 2014 was $67.17 and $63.71, respectively.
	Common Stock
	The following number of shares of common stock were reserved and available for future issuance at April 30, 2015:
	Options outstanding	25,907,303
	Restricted stock awards and units outstanding	21,377,180
	Stock available for future grant:
	2013 Equity Incentive Plan	29,751,044
	2014 Inducement Equity Incentive Plan	676,261
	2004 Employee Stock Purchase Plan	2,849,312
	Convertible senior notes	17,308,880
	Warrants	17,308,880
	115,178,860

Income_Taxes

Income Taxes	3 Months Ended
	Apr. 30, 2015
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, 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 of the U.S.
	For the three months ended April 30, 2014, the Company reported a tax expense of $12.1 million on a pretax loss of $84.8 million, which resulted in a negative effective tax rate of 14 percent. The tax provision recorded was related to income taxes in profitable jurisdictions outside the U.S. and the current tax expense in the U.S. The Company had U.S. current tax expense as a result of forecasted taxable income before considering certain excess tax benefits from stock options and vesting of restricted stock. This U.S. current tax expense was partially offset by tax benefit attributable to losses in certain U.S. states with no valuation allowance.
	Tax Benefits Related to Stock-Based Compensation
	The total income tax benefit related to stock-based awards was $43.7 million and $42.6 million for three months ended April 30, 2015 and 2014, 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. During the quarter ended April 30, 2015, the Company reached a settlement agreement upon completion of its tax examination in Japan which did not result in material impact to its income tax provision. Certain prior year tax returns are currently being examined by various taxing authorities in countries including the United States, Germany, Switzerland and the United Kingdom. To date, the Company has not received any material proposed adjustments.
	The Company believes that it has provided adequate reserves for its income tax uncertainties in all open tax years. In the next 12 months, as some of the ongoing examinations are completed and tax positions in these tax years meet the conditions of being effectively settled, the Company anticipates it is reasonably possible that a decrease of unrecognized tax benefits up to approximately $19 million may occur.

EarningsLoss_Per_Share

Earnings/Loss Per Share	3 Months Ended
	Apr. 30, 2015
Earnings Per Share [Abstract]
Earnings/Loss Per Share	Earnings/Loss Per Share
	Basic earnings/loss per share is computed by dividing net income (loss) 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. Diluted loss per share for the three months ended April 30, 2014 is the same as basic loss per share as there is a net loss in the period and inclusion of potentially issuable shares is anti-dilutive.
	A reconciliation of the denominator used in the calculation of basic and diluted earnings/(loss) per share is as follows (in thousands):
		Three Months Ended April 30,
		2015			2014
	Numerator:
	Net income (loss)	$	4,092		$	(96,911	)
	Denominator:
	Weighted-average shares outstanding for basic loss per share	653,809			612,512
	Effect of dilutive securities:
	Convertible senior notes	0			0
	Employee stock awards	10,501			0
	Warrants	0			0
	Adjusted weighted-average shares outstanding and assumed conversions for diluted loss per share	664,310			612,512
	The weighted-average number of shares outstanding used in the computation of basic and diluted earnings/loss 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/loss per share because the effect would have been anti-dilutive (in thousands):
		Three Months Ended April 30,
		2015		2014
	Stock awards	8,801		20,472
	Convertible senior notes	17,309		30,662
	Warrants	17,309		44,253

Commitments

Commitments	3 Months Ended
	Apr. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments
	Letters of Credit
	As of April 30, 2015, the Company had a total of $67.9 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, 2015, the future minimum lease payments under non-cancelable operating and capital leases are as follows (in thousands):
		Capital			Operating		Financing Obligation, Building in Progress-Leased Facility(1)
		Leases			Leases
	Fiscal Period:
	Remaining nine months of fiscal 2016	$	86,398		$	227,050	$	1,777
	Fiscal 2017	114,874			287,795		16,877
	Fiscal 2018	119,086			244,615		21,107
	Fiscal 2019	113,005			188,841		21,551
	Fiscal 2020	201,507			181,765		21,995
	Thereafter	0			1,052,718		252,517
	Total minimum lease payments	634,870			$	2,182,784	$	335,824
	Less: amount representing interest	(81,799		)
	Present value of capital lease obligations	$	553,071
	______________
	(1) Total Financing Obligation, Building in Progress-Leased Facility noted above represents the total obligation on the lease agreement including amounts allocated to interest noted in Note 3 “Property and Equipment” and includes $145.3 million that was recorded to Financing obligation, building in progress-leased facility, which is included in Other noncurrent liabilities on the balance sheet.
	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 $2.2 billion, approximately $1.9 billion is related to facilities space. The remaining commitment amount is related to computer equipment, other leases, data center capacity and our development and test data center.

Legal_Proceedings_and_Claims

Legal Proceedings and Claims	3 Months Ended
	Apr. 30, 2015
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.  The Company continues to analyze this claim.  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 the net income 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 condensed 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.

RelatedParty_Transactions

Related-Party Transactions	3 Months Ended
	Apr. 30, 2015
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party Transactions
	In January 1999, the Salesforce.com Foundation, which recently became a private foundation, also referred to as the Foundation, was chartered to build philanthropic programs that are focused on youth and technology. Beginning in 2008, Salesforce.org, which is a non-profit mutual 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, one of the Company’s employees and one of the Company’s board members hold three of the Foundation’s nine board seats. The Company’s chairman and one of the Company’s employees hold two of Salesforce.org’s six 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 inception, the Company has provided at no charge certain resources to Foundation employees such as office space. The value of these items was approximately $0.3 million for the three months ended April 30, 2015.
	Additionally, the Company has donated subscriptions to the Company’s service to other qualified non-profit organizations. The Company also allows Salesforce.org to resell the Company’s service to non-profit organizations and certain higher education entities. The Company does not charge Salesforce.org for these subscriptions, so revenue from subscriptions provided to non-profit organizations is provided to the Foundation to fund its charitable work. The value of the subscriptions pursuant to reseller agreements was approximately $14.1 million for the three months ended April 30, 2015. The Company plans to continue these programs.

Summary_of_Business_and_Signif1

Summary of Business and Significant Accounting Policies (Policies)	3 Months Ended
	Apr. 30, 2015
Accounting Policies [Abstract]
Fiscal Year	Fiscal Year
	The Company’s fiscal year ends on January 31. References to fiscal 2016, for example, refer to the fiscal year ending January 31, 2016.
Basis of Presentation	Basis of Presentation
	The accompanying condensed consolidated balance sheet as of April 30, 2015 and the condensed consolidated statements of operations, the condensed consolidated statements of comprehensive loss and the condensed consolidated statements of cash flows for the three months ended April 30, 2015 and 2014, respectively, are unaudited. The condensed consolidated balance sheet data as of January 31, 2015 was derived from the audited consolidated financial statements that are included in the Company’s Form 10-K for the fiscal year ended January 31, 2015, which was filed with the Securities and Exchange Commission (the “SEC”) on March 6, 2015. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes contained in the Company’s fiscal 2015 Form 10-K.
	The accompanying condensed 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 condensed 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, 2015, and its results of operations, including its comprehensive loss, and its cash flows for the three months ended April 30, 2015 and 2014. All adjustments are of a normal recurring nature. The results for the three months ended April 30, 2015 are not necessarily indicative of the results to be expected for any subsequent quarter or for the fiscal year ending January 31, 2016.
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 condensed 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 valuation of strategic investments and the determination of other-than-temporary impairments, and
	•	the assessment of determination of impairment of long-lived assets (property and equipment, goodwill and identified intangibles).
	Actual results could differ materially from those estimates.
Principles of Consolidation	Principles of Consolidation
	The condensed 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 condensed 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. Although the Company deposits its cash with multiple financial institutions, its deposits, at times, may exceed federally insured limits. 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 majority of the Company’s professional services contracts are on a time and material 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. 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 condensed 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 condensed consolidated statements of comprehensive 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:
	Computer, equipment and software	3 to 9 years
	Furniture and fixtures	5 years
	Leasehold improvements	Shorter of the estimated lease term or 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, Intangible Assets, Long-Lived Assets and Impairment Assessments	Goodwill, Intangible Assets, Long-Lived Assets and 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.
	The Company evaluates the recoverability of its long-lived assets for possible impairment whenever events or circumstances indicate that the carrying amount of such assets 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 condensed consolidated 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 of the operating expense.
	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	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 Company recognizes stock-based expenses related to shares issued pursuant to its 2004 Employee Stock Purchase Plan (“ESPP”) 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.
	There were no stock purchase rights granted under the ESPP in the three months ended April 30, 2015 or 2014 as these stock purchase rights are only granted in June and December.
	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.
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 condensed 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 condensed consolidated statements of comprehensive loss. Foreign currency transaction gains and losses are included in net 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 liabilities related to such obligations in the accompanying condensed 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 Pronouncement	New Accounting Pronouncement
	In May 2014, the Financial Accounting Standards Board (“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. In April 2015, the FASB proposed a one-year deferral of the effective date for the new revenue reporting standard for entities reporting under U.S. GAAP. 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 condensed consolidated financial statements and has not determined whether the effect will be material to either its revenue results or its deferred commissions balances.

Summary_of_Business_and_Signif2

Summary of Business and Significant Accounting Policies (Tables)	3 Months Ended
	Apr. 30, 2015
Accounting Policies [Abstract]
Revenues By Geographical Region	Revenues by geographical region are as follows (in thousands):
			Three Months Ended April 30,
			2015			2014
	Americas		$	1,115,120		$	876,377
	Europe		258,805			230,810
	Asia Pacific		137,242			119,585
			$	1,511,167		$	1,226,772
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:
	Computer, equipment and software	3 to 9 years
	Furniture and fixtures	5 years
	Leasehold improvements	Shorter of the estimated lease term or 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
			April 30,
	Stock Options		2015				2014
	Volatility		37.4		%		37		%
	Estimated life		3.6 years				3.5 years
	Risk-free interest rate		1.13-1.36		%		1.20-1.39		%
	Weighted-average fair value per share of grants		$	19.52			$	16.93

Investments_Tables

Investments (Tables)	3 Months Ended
	Apr. 30, 2015
Investments Schedule [Abstract]
Schedule of Marketable Securities	At April 30, 2015, marketable securities consisted of the following (in thousands):
	Investments classified as Marketable Securities	Amortized				Unrealized				Unrealized			Fair Value
		Cost				Gains				Losses
	Corporate notes and obligations	$	582,682			$	1,887			$	(327	)	$	584,242
	U.S. treasury securities	85,977				162				(12		)	86,127
	Mortgage backed obligations	65,247				142				(554		)	64,835
	Asset backed securities	170,983				142				(76		)	171,049
	Municipal securities	36,418				98				(19		)	36,497
	Foreign government obligations	524				17				0			541
	U.S. agency obligations	15,832				12				(3		)	15,841
	Covered bonds	20,893				495				0			21,388
	Total marketable securities	$	978,556			$	2,955			$	(991	)	$	980,520
	At January 31, 2015, marketable securities consisted of the following (in thousands):
	Investments classified as Marketable Securities	Amortized				Unrealized				Unrealized			Fair Value
		Cost				Gains				Losses
	Corporate notes and obligations	$	605,724			$	3,031			$	(481	)	$	608,274
	U.S. treasury securities	73,226				257				(1		)	73,482
	Mortgage backed obligations	44,181				159				(415		)	43,925
	Asset backed securities	120,049				131				(43		)	120,137
	Municipal securities	36,447				115				(25		)	36,537
	Foreign government obligations	12,023				278				0			12,301
	U.S. agency obligations	19,488				26				(4		)	19,510
	Covered bonds	66,816				1,185				0			68,001
	Total marketable securities	$	977,954			$	5,182			$	(969	)	$	982,167
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,
		2015				2015
	Recorded as follows:
	Short-term (due in one year or less)	$	77,059			$	87,312
	Long-term (due after one year)	903,461				894,855
		$	980,520			$	982,167
Schedule of Marketable Securities in a Unrealized Loss Position	As of April 30, 2015, the following marketable securities were in an unrealized loss position (in thousands):
		Less than 12 Months								12 Months or Greater						Total
		Fair Value				Unrealized				Fair Value			Unrealized			Fair Value		Unrealized
						Losses							Losses					Losses
	Corporate notes and obligations	$	201,863			$	(312	)		$	5,853		$	(15	)	$	207,716	$	(327	)
	U.S. treasury securities	27,419				(12		)		0			0			27,419		(12		)
	Mortgage backed obligations	48,289				(460		)		7,081			(94		)	55,370		(554		)
	Asset backed securities	85,730				(70		)		3,484			(6		)	89,214		(76		)
	Municipal securities	13,151				(19		)		0			0			13,151		(19		)
	U.S. agency obligations	2,172				(3		)		0			0			2,172		(3		)
		$	378,624			$	(876	)		$	16,418		$	(115	)	$	395,042	$	(991	)
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, 2015 and indicates the fair value hierarchy of the valuation (in thousands):
	Description	Quoted Prices in				Significant  Other				Significant			Balances as of
		Active Markets				Observable				Unobservable			30-Apr-15
		for Identical Assets				Inputs				Inputs
		(Level 1)				(Level 2)				(Level 3)
	Cash equivalents (1):
	Time deposits	$	0			$	57,849			$	0		$	57,849
	Money market mutual funds	40,432				0				0			40,432
	Marketable securities:
	Corporate notes and obligations	0				584,242				0			584,242
	U.S. treasury securities	0				86,127				0			86,127
	Mortgage backed obligations	0				64,835				0			64,835
	Asset backed securities	0				171,049				0			171,049
	Municipal securities	0				36,497				0			36,497
	Foreign government obligations	0				541				0			541
	U.S. agency obligations	0				15,841				0			15,841
	Covered bonds	0				21,388				0			21,388
	Foreign currency derivative contracts (2)	0				9,465				0			9,465
	Total Assets	$	40,432			$	1,047,834			$	0		$	1,088,266
	Liabilities
	Foreign currency derivative contracts (3)	$	0			$	2,581			$	0		$	2,581
	Total Liabilities	$	0			$	2,581			$	0		$	2,581
	_____________
	(1)Included in “cash and cash equivalents” in the accompanying condensed consolidated balance sheet as of April 30, 2015, in addition to $843.7 million of cash.
	(2)Included in “prepaid expenses and other current assets” in the accompanying condensed consolidated balance sheet as of April 30, 2015.
	(3)Included in “accounts payable, accrued expenses and other liabilities” in the condensed consolidated balance sheet as of April 30, 2015.
	The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2015 and indicates the fair value hierarchy of the valuation (in thousands):
	Description	Quoted Prices in				Significant Other				Significant			Balances as of
		Active Markets				Observable Inputs (Level 2)				Unobservable			January 31, 2015
		for Identical Assets								Inputs
		(Level 1)								(Level 3)
	Cash equivalents (1):
	Time deposits	$	0			$	292,487			$	0		$	292,487
	Money market mutual funds	13,983				0				0			13,983
	Marketable securities:
	Corporate notes and obligations	0				608,274				0			608,274
	U.S. treasury securities	0				73,482				0			73,482
	Mortgage backed obligations	0				43,925				0			43,925
	Asset backed securities	0				120,137				0			120,137
	Municipal securities	0				36,537				0			36,537
	Foreign government obligations	0				12,301				0			12,301
	U.S. agency obligations	0				19,510				0			19,510
	Covered bonds	0				68,001				0			68,001
	Foreign currency derivative contracts (2)	0				10,611				0			10,611
	Total Assets	$	13,983			$	1,285,265			$	0		$	1,299,248
	Liabilities
	Foreign currency derivative contracts (3)	$	0			$	5,694			$	0		$	5,694
	Total Liabilities	$	0			$	5,694			$	0		$	5,694
	______________
	(1)Included in “cash and cash equivalents” in the accompanying condensed consolidated balance sheet as of January 31, 2015, in addition to $601.6 million of cash.
	(2)Included in “prepaid expenses and other current assets” in the accompanying condensed consolidated balance sheet as of January 31, 2015.
	(3)Included in “accounts payable, accrued expenses and other liabilities” in the accompanying condensed consolidated balance sheet as of January 31, 2015.
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
		30-Apr-15				31-Jan-15
	Notional amount of foreign currency derivative contracts	$	731,148			$	942,086
	Fair value of foreign currency derivative contracts	$	6,884			$	4,917
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	30-Apr-15				31-Jan-15
	Derivative Assets
	Derivatives not designated as hedging instruments:
	Foreign currency derivative contracts	Prepaid expenses and other current assets	$	9,465			$	10,611
	Derivative Liabilities
	Derivatives not designated as hedging instruments:
	Foreign currency derivative contracts	Accounts payable, accrued expenses and other liabilities	$	2,581			$	5,694
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 condensed consolidated statements of operations during the three months ended April 30, 2015 and 2014, respectively, are summarized below (in thousands):
	Derivatives Not Designated as Hedging Instruments	Gains (Losses) on Derivative Instruments
		Recognized in Income
				Three Months Ended April 30,
		Location		2015				2014
	Foreign currency derivative contracts	Other income (expense)		$	11,459			$	(12	)
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,
			2015				2014
	Interest income		$	3,049			$	1,764
	Realized gains		2,128				117
	Realized losses		(616		)		(103		)
	Total investment income		$	4,561			$	1,778

Property_and_Equipment_Tables

Property and Equipment (Tables)	3 Months Ended
	Apr. 30, 2015
Property, Plant and Equipment [Abstract]
Schedule of Property And Equipment	Property and equipment consisted of the following (in thousands):
		As of
		30-Apr-15			31-Jan-15
	Land	$	183,888		$	0
	Buildings	572,164			125,289
	Computers, equipment and software	1,203,411			1,171,762
	Furniture and fixtures	75,726			71,881
	Leasehold improvements	394,674			376,761
		2,429,863			$	1,745,693
	Less accumulated depreciation and amortization	(692,769		)	(619,827		)
		$	1,737,094		$	1,125,866

Business_Combinations_Tables

Business Combinations (Tables)	3 Months Ended
	Apr. 30, 2015
Business Acquisition [Line Items]
Schedule of Goodwill	Goodwill consisted of the following (in thousands):
	Balance as of January 31, 2015	$	3,782,660
	Other business combination	8,923
	Balance as of April 30, 2015	$	3,791,583
50 Fremont Street
Business Acquisition [Line Items]
Schedule of Consideration Transferred	The purchase consideration for the corporate headquarters building was as follows (in thousands):
		Fair Value
	Cash	$	435,189
	Loan assumed on 50 Fremont	200,000
	Prorations due to ownership transfer midmonth	2,411
	Total purchase consideration	$	637,600
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the fair values of net tangible and intangible assets acquired (in thousands):
		Fair Value
	Building	$	435,390
	Land	183,888
	Termination of salesforce operating lease	9,483
	Acquired lease intangibles	7,590
	Loan assumed on 50 Fremont fair market value adjustment	1,249
	Total	$	637,600

Debt_Tables

Debt (Tables)	3 Months Ended
	Apr. 30, 2015
Debt Disclosure [Abstract]
Summary of Convertible Senior Notes	Convertible Senior Notes
		Par Value Outstanding				Equity				Liability Component of Par Value as of
	(In thousands)					Component Recorded at Issuance				April 30,			January 31,
										2015			2015
	0.25% Convertible Senior Notes due April 1, 2018	$	1,150,000			$	122,421		-1	$	1,076,727		$	1,070,692
	___________
	(1)This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes.
	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			Initial				Convertible Date
		Rate per $1,000			Conversion
		Par Value			Price per
					Share
	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,
		2015				2015
	Liability component :
	Principal:
	0.25% Senior Notes (1)	$	1,150,000			$	1,150,000
	Less: debt discount, net
	0.25% Senior Notes (2)	(73,273		)		(79,308		)
	Net carrying amount	$	1,076,727			$	1,070,692
	(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 condensed 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.
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				Shares			Strike
				(in thousands)							Price
	0.25% Warrants	March 2013		$	84,800			17,308,880			$	90.4
Schedule of Interest Expense	The following table sets forth total interest expense recognized related to the Notes, the Credit Facility and the Loan prior to capitalization of interest (in thousands):
			Three Months Ended April 30,
			2015				2014
	Contractual interest expense		$	3,350			$	2,903
	Amortization of debt issuance costs		1,018				1,228
	Amortization of debt discount		6,059				10,984
			$	10,427			$	15,115

Other_Balance_Sheet_Accounts_T

Other Balance Sheet Accounts (Tables)	3 Months Ended
	Apr. 30, 2015
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,
		2015		2015
	Deferred income taxes, net	$	44,342	$	35,528
	Prepaid income taxes	21,362		21,514
	Customer contract asset	10,492		16,620
	Other taxes receivable	25,592		27,540
	Prepaid expenses and other current assets	209,195		179,352
		$	310,983	$	280,554
Schedule of Capitalized Software Costs	Capitalized software consisted of the following (in thousands):
		As of
		April 30,		January 31,
		2015		2015
	Capitalized internal-use software development costs, net of accumulated amortization of $147,646 and $136,314, respectively	$	102,430	$	96,617
	Acquired developed technology, net of accumulated amortization of $414,634 and $392,736, respectively	318,893		336,781
		$	421,323	$	433,398
Schedule of Other Assets	Other assets consisted of the following (in thousands):
		As of
		April 30,		January 31,
		2015		2015
	Deferred income taxes, noncurrent, net	$	8,930	$	9,275
	Long-term deposits	19,163		19,715
	Purchased intangible assets, net of accumulated amortization of $150,963 and $130,968, respectively	317,565		329,971
	Acquired intellectual property, net of accumulated amortization of $17,409 and $15,695, respectively	15,595		15,879
	Strategic investments	318,716		175,774
	Customer contract asset	407		1,447
	Other	74,002		76,259
		$	754,378	$	628,320
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,
		2015		2015
	Accounts payable	$	60,227	$	95,537
	Accrued compensation	308,589		457,102
	Accrued other liabilities	380,227		321,032
	Accrued income and other taxes payable	128,734		184,844
	Accrued professional costs	27,814		16,889
	Customer liability, current	10,561		13,084
	Accrued rent	11,953		14,847
		$	928,105	$	1,103,335
Schedule of Other Noncurrent Liabilities	Other noncurrent liabilities consisted of the following (in thousands):
		As of
		April 30,		January 31,
		2015		2015
	Deferred income taxes and income taxes payable	$	106,499	$	94,396
	Customer liability, noncurrent	288		1,026
	Financing obligation, building in progress-leased facility	145,255		125,289
	Long-term lease liabilities and other	618,009		701,612
		$	870,051	$	922,323

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Apr. 30, 2015
Equity [Abstract]
Schedule Of Stock Activity	Stock activity excluding the ESPP is as follows:
				Options Outstanding
		Shares		Outstanding		Weighted-			Aggregate
		Available for		Stock		Average			Intrinsic Value
		Grant		Options		Exercise Price
	Balance as of January 31, 2015	30,789,538		29,458,361		$	44.36
	Increase in shares authorized:
	2013 Equity Incentive Plan	908,405		0		0
	2014 Inducement Equity Incentive Plan	109,666		0		0
	Options granted under all plans	(597,589	)	597,589		66.98
	Restricted stock activity	(653,021	)	0		0
	Stock grants to board and advisory board members	(53,817	)	0		0
	Exercised	0		(3,365,914	)	33.54
	Plan shares expired	(858,610	)	0		0
	Canceled	782,733		(782,733	)	43.38
	Balance as of April 30, 2015	30,427,305		25,907,303		$	46.32		$	686,590,080
	Vested or expected to vest			24,031,621		$	45.64		$	653,176,385
	Exercisable as of January 31, 2015			9,224,356		$	35.38		$	345,386,983
Schedule Of Stock Options Outstanding	The following table summarizes information about stock options outstanding as of April 30, 2015:
			Options Outstanding						Options Exercisable
	Range of Exercise		Number		Weighted-	Weighted-			Number of		Weighted-
	Prices		Outstanding		Average	Average			Shares		Average
					Remaining	Exercise					Exercise
					Contractual Life	Price					Price
					(Years)
	$0.86 to $27.56		3,757,745		2.9	$	22.85		2,777,045		$	22.62
	$27.66 to $37.95		4,583,438		1.7	36.02			3,377,985		35.78
	$38.03 to $52.14		3,020,285		3	39.94			1,484,315		39.65
	52.3		4,602,478		5.6	52.3			1,392,231		52.3
	$53.60 to $57.79		1,881,361		6.1	55.21			163,751		55.93
	$59.34		6,747,253		6.6	59.34			0		0
	$59.37 to $67.71		1,314,743		6.6	63.46			29,029		63.26
			25,907,303		4.5	$	46.32		9,224,356		$	35.38
Schedule Of Restricted Stock Activity	Restricted stock activity is as follows:
		Restricted Stock Outstanding
		Outstanding		Weighted-			Aggregate
				Average			Intrinsic
				Exercise Price			Value
							(in thousands)
	Balance as of January 31, 2015	23,144,008		$	0.001
	Granted	1,072,962		0.001
	Canceled	(1,011,129	)	0.001
	Vested and converted to shares	(1,828,661	)	0.001
	Balance as of April 30, 2015	21,377,180		$	0.001		$	1,556,686
	Expected to vest	18,423,081					$	1,341,569
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, 2015:
	Options outstanding	25,907,303
	Restricted stock awards and units outstanding	21,377,180
	Stock available for future grant:
	2013 Equity Incentive Plan	29,751,044
	2014 Inducement Equity Incentive Plan	676,261
	2004 Employee Stock Purchase Plan	2,849,312
	Convertible senior notes	17,308,880
	Warrants	17,308,880
		115,178,860

EarningsLoss_Per_Share_Tables

Earnings/Loss Per Share (Tables)	3 Months Ended
	Apr. 30, 2015
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/(loss) per share is as follows (in thousands):
		Three Months Ended April 30,
		2015			2014
	Numerator:
	Net income (loss)	$	4,092		$	(96,911	)
	Denominator:
	Weighted-average shares outstanding for basic loss per share	653,809			612,512
	Effect of dilutive securities:
	Convertible senior notes	0			0
	Employee stock awards	10,501			0
	Warrants	0			0
	Adjusted weighted-average shares outstanding and assumed conversions for diluted loss per share	664,310			612,512
Shares Excluded From Diluted Earnings Or Loss Per Share	The weighted-average number of shares outstanding used in the computation of basic and diluted earnings/loss 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/loss per share because the effect would have been anti-dilutive (in thousands):
		Three Months Ended April 30,
		2015		2014
	Stock awards	8,801		20,472
	Convertible senior notes	17,309		30,662
	Warrants	17,309		44,253

Commitments_Tables

Commitments (Tables)	3 Months Ended
	Apr. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Future Minimum Lease Payments Under Non-Cancelable Operating And Capital Leases	As of April 30, 2015, the future minimum lease payments under non-cancelable operating and capital leases are as follows (in thousands):
		Capital			Operating		Financing Obligation, Building in Progress-Leased Facility(1)
		Leases			Leases
	Fiscal Period:
	Remaining nine months of fiscal 2016	$	86,398		$	227,050	$	1,777
	Fiscal 2017	114,874			287,795		16,877
	Fiscal 2018	119,086			244,615		21,107
	Fiscal 2019	113,005			188,841		21,551
	Fiscal 2020	201,507			181,765		21,995
	Thereafter	0			1,052,718		252,517
	Total minimum lease payments	634,870			$	2,182,784	$	335,824
	Less: amount representing interest	(81,799		)
	Present value of capital lease obligations	$	553,071
	______________
	(1) Total Financing Obligation, Building in Progress-Leased Facility noted above represents the total obligation on the lease agreement including amounts allocated to interest noted in Note 3 “Property and Equipment” and includes $145.3 million that was recorded to Financing obligation, building in progress-leased facility, which is included in Other noncurrent liabilities on the balance sheet.

Summary_of_Business_and_Signif3

Summary of Business and Significant Accounting Policies - Additional Information (Detail)	3 Months Ended	12 Months Ended	3 Months Ended
	Apr. 30, 2015	Jan. 31, 2015	Apr. 30, 2014
	Segment	customer	customer
Concentration Risk [Line Items]
Number of operating segments	1
Vesting period	4 years
Offering period	12 months
Expected dividend yield	0.00%
Percentage of tax benefit likely to be realized upon settlement (greater than 50%)	50.00%
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	95.00%		94.00%
Revenue | Geographic Concentration Risk | All Other Countries
Concentration Risk [Line Items]
Countries exceeding concentration of total revenue threshold, number	0		0
Concentration risk percentage	10.00%		10.00%
Assets | Geographic Concentration Risk | Outside Americas
Concentration Risk [Line Items]
Concentration risk percentage	13.00%		12.00%
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_Signif4

Summary of Business and Significant Accounting Policies - Revenues by Geographical Region (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$1,511,167	$1,226,772
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,115,120	876,377
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	258,805	230,810
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$137,242	$119,585

Summary_of_Business_and_Signif5

Summary of Business and Significant Accounting Policies - Schedule of Property and Equipment Estimated Useful Lives (Detail)	3 Months Ended
	Apr. 30, 2015
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Minimum | Computers, equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Minimum | Capitalized internal-use software development costs
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 | Capitalized internal-use software development costs
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful lives	5 years

Summary_of_Business_and_Signif6

Summary of Business and Significant Accounting Policies - Schedule of Assumptions Used to Calculate Fair Value of Options Granted (Detail) (Stock Options, USD $)	3 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	37.40%	37.00%
Estimated life	3 years 6 months 20 days	3 years 5 months 20 days
Risk-free interest rate, minimum	1.13%	1.20%
Risk-free interest rate, maximum	1.36%	1.39%
Weighted-average fair value per share of grants (in dollars per share)	$19.52	$16.93

Investments_Schedule_of_Market

Investments - Schedule of Marketable Securities (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$978,556	$977,954
Unrealized Gains	2,955	5,182
Unrealized Losses	-991	-969
Fair Value	980,520	982,167
Corporate notes and obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	582,682	605,724
Unrealized Gains	1,887	3,031
Unrealized Losses	-327	-481
Fair Value	584,242	608,274
U.S. treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	85,977	73,226
Unrealized Gains	162	257
Unrealized Losses	-12	-1
Fair Value	86,127	73,482
Mortgage backed obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	65,247	44,181
Unrealized Gains	142	159
Unrealized Losses	-554	-415
Fair Value	64,835	43,925
Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	170,983	120,049
Unrealized Gains	142	131
Unrealized Losses	-76	-43
Fair Value	171,049	120,137
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	36,418	36,447
Unrealized Gains	98	115
Unrealized Losses	-19	-25
Fair Value	36,497	36,537
Foreign government obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	524	12,023
Unrealized Gains	17	278
Unrealized Losses	0	0
Fair Value	541	12,301
U.S. agency obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	15,832	19,488
Unrealized Gains	12	26
Unrealized Losses	-3	-4
Fair Value	15,841	19,510
Covered bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20,893	66,816
Unrealized Gains	495	1,185
Unrealized Losses	0	0
Fair Value	$21,388	$68,001

Investments_Schedule_of_ShortT

Investments - Schedule of Short-Term and Long-Term Marketable Securities (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]
Short-term (due in one year or less)	$77,059	$87,312
Long-term (due after one year)	903,461	894,855
Fair Value of Marketable Securities	$980,520	$982,167

Investments_Schedule_of_Market1

Investments - Schedule of Marketable Securities in Unrealized Loss Position (Detail) (USD $)	Apr. 30, 2015
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	$378,624
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-876
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	16,418
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-115
Marketable securities in an unrealized loss position, Fair Value	395,042
Marketable securities in an unrealized loss position, Unrealized Losses	-991
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	201,863
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-312
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	5,853
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-15
Marketable securities in an unrealized loss position, Fair Value	207,716
Marketable securities in an unrealized loss position, Unrealized Losses	-327
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	27,419
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-12
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	27,419
Marketable securities in an unrealized loss position, Unrealized Losses	-12
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	48,289
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-460
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	7,081
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-94
Marketable securities in an unrealized loss position, Fair Value	55,370
Marketable securities in an unrealized loss position, Unrealized Losses	-554
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	85,730
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-70
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	3,484
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-6
Marketable securities in an unrealized loss position, Fair Value	89,214
Marketable securities in an unrealized loss position, Unrealized Losses	-76
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	13,151
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-19
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	13,151
Marketable securities in an unrealized loss position, Unrealized Losses	-19
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	2,172
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	2,172
Marketable securities in an unrealized loss position, Unrealized Losses	($3)

Investments_Additional_Informa

Investments - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Apr. 30, 2015	Jan. 31, 2015
	investment	investment
Investment Holdings [Line Items]
Unrealized losses on fixed rate investments, upper range value	$100,000
Strategic Investments
Investment Holdings [Line Items]
Fair value of marketable security	17,700,000	17,800,000
Number of investments in marketable equity securities	4	4
Unrealized gain on marketable securities	12,900,000	13,100,000
Investments in privately-held companies	301,000,000	158,000,000
Investments in privately-held companies, estimated fair value	$452,000,000	$280,000,000

Investments_Schedule_of_Assets

Investments - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Cash
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$843,700	$601,600
Recurring measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		68,001
Total Assets	1,088,266	1,299,248
Total Liabilities	2,581	5,694
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	40,432	13,983
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		68,001
Total Assets	1,047,834	1,285,265
Total Liabilities	2,581	5,694
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	9,465	10,611
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	9,465	10,611
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	2,581	5,694
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	2,581	5,694
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	57,849	292,487
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	57,849	292,487
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	40,432	13,983
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	40,432	13,983
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 | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	584,242	608,274
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	584,242	608,274
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	86,127	73,482
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	86,127	73,482
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	64,835	43,925
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	64,835	43,925
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	171,049	120,137
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	171,049	120,137
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	36,497	36,537
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	36,497	36,537
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	541	12,301
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	541	12,301
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	15,841	19,510
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	15,841	19,510
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
Recurring measurement | Covered bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	21,388
Recurring measurement | Covered bonds | 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
Recurring measurement | Covered bonds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	21,388
Recurring measurement | Covered bonds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$0

Investments_Schedule_of_Outsta

Investments - Schedule of Outstanding Foreign Currency Derivative Contracts Related Primarily to Intercompany Receivables and Payables (Detail) (Derivatives not designated as hedging instruments, USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Derivative [Line Items]
Fair value of foreign currency derivative contracts	$6,884	$4,917
Foreign currency derivative contracts
Derivative [Line Items]
Notional amount of foreign currency derivative contracts	$731,148	$942,086

Investments_Fair_Value_of_Outs

Investments - Fair Value of Outstanding Derivative Instruments (Detail) (Derivatives not designated as hedging instruments, Foreign currency derivative contracts, USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	$9,465	$10,611
Accounts payable, accrued expenses and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$2,581	$5,694

Investments_Effect_of_Derivati

Investments - Effect of Derivative Instruments Not Designated as Hedging Instruments on Condensed Consolidated Statements of Operations (Detail) (Derivatives not designated as hedging instruments, Foreign currency derivative contracts, Other income (expense), USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
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	$11,459	($12)

Investments_Schedule_of_Compon

Investments - Schedule of Components of Investment Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Interest income	$3,049	$1,764
Realized gains	2,128	117
Realized losses	-616	-103
Total investment income	$4,561	$1,778

Property_and_Equipment_Detail

Property and Equipment (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$2,429,863	$1,745,693
Less accumulated depreciation and amortization	-692,769	-619,827
Property and equipment, net	1,737,094	1,125,866
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	183,888	0
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	572,164	125,289
Computers, equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,203,411	1,171,762
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	75,726	71,881
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$394,674	$376,761

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014	Jan. 31, 2015	Dec. 31, 2012
	acre	acre	acre		sqft
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense		$72,500,000	$56,400,000
Fixed assets acquired under capital lease agreements		737,800,000		734,700,000
Area of land	8.8	8.8	8.8
Deposit for purchase of 50 Fremont land and building	30,000,000	115,015,000	0
Land and building improvements held for sale		140,345,000		143,197,000
Net rentable area (in square feet)					445,000
Property and equipment, gross		2,429,863,000		1,745,693,000
Noncurrent financing obligation liability		136,500,000
Financing obligation, tenant improvements		8,300,000
Financing obligation, imputed interest		400,000
Expected financing obligation		335,824,000
Impairment of long-lived assets		0	0
Undeveloped Real Estate
Property, Plant and Equipment [Line Items]
Land and building improvements held for sale		137,700,000
Perpetual Parking Rights
Property, Plant and Equipment [Line Items]
Total carrying value of the land, building improvements and perpetual parking rights		5,500,000
Reimbursed Property Taxes and Other Items
Property, Plant and Equipment [Line Items]
Total carrying value of the land, building improvements and perpetual parking rights		2,900,000
Computers, equipment and software
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization		233,300,000		206,700,000
Property and equipment, gross		1,203,411,000		1,171,762,000
Building in progress—leased facility
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$136,500,000

Business_Combinations_Narrativ

Business Combinations (Narrative) (Details) (USD $)	3 Months Ended		0 Months Ended	1 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Feb. 28, 2015	Dec. 31, 2012
			sqft	sqft	sqft
				story
Business Acquisition [Line Items]
Net rentable area (in square feet)					445,000
Business combinations, net of cash acquired	$12,470,000	$0
50 Fremont Street
Business Acquisition [Line Items]
Number of stories in building				41
Net rentable area (in square feet)				817,000
Area leased			515,000	500,000
Proceeds of like-kind exchange account				115,000,000
Non-cash gain on termination of lease				36,600,000
Reversal of tenant incentives				46,100,000
Termination of salesforce operating lease				9,483,000
Other Business Combination
Business Acquisition [Line Items]
Number of businesses acquired	1
Business combinations, net of cash acquired	12,400,000
Goodwill acquired	$8,923,000

Business_Combinations_Consider

Business Combinations (Consideration Transferred) (Details) (50 Fremont Street, USD $)	1 Months Ended
In Thousands, unless otherwise specified	Feb. 28, 2015
50 Fremont Street
Business Acquisition [Line Items]
Cash	$435,189
Loan assumed on 50 Fremont	200,000
Prorations due to ownership transfer midmonth	2,411
Consideration transferred	$637,600

Business_Combinations_Estimate

Business Combinations (Estimated Fair Values of Assets Acquired and Liabilities Assumed) (Details) (50 Fremont Street, USD $)	Feb. 28, 2015
In Thousands, unless otherwise specified
50 Fremont Street
Business Acquisition [Line Items]
Building	$435,390
Land	183,888
Termination of salesforce operating lease	9,483
Intangible assets	7,590
Loan assumed on 50 Fremont fair market value adjustment	1,249
Net assets acquired	$637,600

Business_Combinations_Goodwill

Business Combinations (Goodwill) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Jan. 31, 2015
Goodwill [Roll Forward]
Goodwill beginning balance		$3,782,660
Goodwill ending balance	3,791,583	3,782,660
Other Business Combination
Goodwill [Roll Forward]
Goodwill acquired	$8,923

Debt_Summary_of_Convertible_Se

Debt - Summary of Convertible Senior Notes (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015	Mar. 31, 2013
In Thousands, unless otherwise specified
Debt Conversion [Line Items]
Convertible 0.25% senior notes, net	$1,076,727	$1,070,692
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	$1,076,727	$1,070,692
Contractual interest rate	0.25%		0.25%

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	1 Months Ended	0 Months Ended	3 Months Ended	1 Months Ended
	Feb. 28, 2015	Oct. 06, 2014	Apr. 30, 2015	Mar. 31, 2015	Mar. 31, 2013
Debt Instrument [Line Items]
Amount outstanding			$0
50 Fremont Street
Debt Instrument [Line Items]
Loan assumed on 50 Fremont	200,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		650,000,000
Proceeds from revolving credit facility, net		300,000,000
Interest rate			1.60%
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee percentage		0.13%
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			1,400,000,000
Fair value debt basis amount			100
Closing prices of Company's common stock			$72.82
If-converted value in excess of principal			110,400,000
Line of Credit
Debt Instrument [Line Items]
Repayments of debt				300,000,000
Mortgage Loan | 50 Fremont Street
Debt Instrument [Line Items]
Contractual interest rate	3.75%
Loan assumed on 50 Fremont	$200,000,000

Debt_Schedule_of_Conversion_of

Debt - Schedule of Conversion of Senior Notes to Common Stock (Detail) (Convertible Debt, 0.25% Convertible Senior Notes due April 1, 2018, USD $)	3 Months Ended
	Apr. 30, 2015
Convertible Debt | 0.25% Convertible Senior Notes due April 1, 2018
Debt Instrument [Line Items]
Conversion Rate per $1,000 Par Value	0.0150512
Initial Conversion Price per Share	$66.44

Debt_Schedule_of_Convertible_S

Debt - Schedule of Convertible Senior Notes (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015	Mar. 31, 2013
In Thousands, unless otherwise specified
Convertible Senior Notes
Debt Instrument [Line Items]
Net carrying amount	$1,076,727	$1,070,692
Convertible Debt | 0.25% Convertible Senior Notes due April 1, 2018
Debt Instrument [Line Items]
Principal	1,150,000	1,150,000
Less: debt discount, net	($73,273)	($79,308)
Interest percentage of convertible senior notes	0.25%		0.25%
Effective interest rates of Senior Notes	2.53%

Debt_Summary_of_Hedge_Notes_De

Debt - Summary of Hedge Notes (Detail) (Convertible Debt, 0.25% Note Hedges, USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 30, 2015
Convertible Debt | 0.25% Note Hedges
Derivatives, Fair Value [Line Items]
Purchase	$153,800
Shares	17,308,880

Debt_Components_of_Warrants_De

Debt - Components of Warrants (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 30, 2015
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)	$90.40

Debt_Schedule_of_Interest_Expe

Debt - Schedule of Interest Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Debt Disclosure [Abstract]
Contractual interest expense	$3,350	$2,903
Amortization of debt issuance costs	1,018	1,228
Amortization of debt discount	6,059	10,984
Debt Instrument, Interest Expense, Total	$10,427	$15,115

Other_Balance_Sheet_Accounts_S

Other Balance Sheet Accounts - Schedule of Prepaid Expenses and Other Current Assets (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred income taxes, net	$44,342	$35,528
Prepaid income taxes	21,362	21,514
Customer contract asset	10,492	16,620
Other taxes receivable	25,592	27,540
Prepaid expenses and other current assets	209,195	179,352
Prepaid expenses and other current assets	$310,983	$280,554

Other_Balance_Sheet_Accounts_S1

Other Balance Sheet Accounts - Schedule of Capitalized Software Costs (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Capitalized software costs	$421,323	$433,398
Capitalized internal-use software development costs, net of accumulated amortization of $147,646 and $136,314, respectively
Property, Plant and Equipment [Line Items]
Capitalized software costs	102,430	96,617
Accumulated amortization	147,646	136,314
Acquired developed technology, net of accumulated amortization of $414,634 and $392,736, respectively
Property, Plant and Equipment [Line Items]
Capitalized software costs	318,893	336,781
Accumulated amortization	$414,634	$392,736

Other_Balance_Sheet_Accounts_A

Other Balance Sheet Accounts - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Purchased intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	$20	$15.20
Acquired intellectual property
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	1.7	1.2
Capitalized internal-use software development costs
Finite-Lived Intangible Assets [Line Items]
Capitalized software amortization expense	11.3	8.3
Capitalized stock based compensation	1.6	1
Acquired developed technology
Finite-Lived Intangible Assets [Line Items]
Capitalized software amortization expense	$21.90	$30.40

Other_Balance_Sheet_Accounts_S2

Other Balance Sheet Accounts - Schedule of Other Assets (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
Deferred income taxes, noncurrent, net	$8,930	$9,275
Long-term deposits	19,163	19,715
Strategic investments	318,716	175,774
Customer contract asset	407	1,447
Other	74,002	76,259
Other assets, net	754,378	628,320
Purchased intangible assets, net of accumulated amortization of $150,963 and $130,968, respectively
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	317,565	329,971
Accumulated amortization	150,963	130,968
Acquired intellectual property, net of accumulated amortization of $17,409 and $15,695, respectively
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	15,595	15,879
Accumulated amortization	$17,409	$15,695

Other_Balance_Sheet_Accounts_S3

Other Balance Sheet Accounts - Schedule of Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Accounts payable	$60,227	$95,537
Accrued compensation	308,589	457,102
Accrued other liabilities	380,227	321,032
Accrued income and other taxes payable	128,734	184,844
Accrued professional costs	27,814	16,889
Customer liability, current	10,561	13,084
Accrued rent	11,953	14,847
Accrued expenses and other current liabilities	$928,105	$1,103,335

Other_Balance_Sheet_Accounts_S4

Other Balance Sheet Accounts - Schedule of Other Non current Liabilities (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Deferred income taxes and income taxes payable	$106,499	$94,396
Customer liability, noncurrent	288	1,026
Financing obligation, building in progress-leased facility	145,255	125,289
Long-term lease liabilities and other	618,009	701,612
Other noncurrent liabilities	$870,051	$922,323

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended	21 Months Ended	90 Months Ended
In Millions, except Share data, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014	Jan. 31, 2006	Apr. 30, 2015	Jul. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of the options exercised during the period	$113.30	$68.80
Weighted-average remaining contractual life of vested and expected to vest options (in years)	4 years 5 months 2 days
Options vested	9,224,356			9,224,356
Weighted average exercise price vested	$35.38			35.38
Weighted-average contractual life of vested and expected to vest options (in years)	2 years 7 months 6 days
Intrinsic value of vested options	345.4			345.4
Weighted-average exercise price	$0.00			0.001
Restricted stock units, vesting period (in years)	4 years
Weighted-average grant date fair value of the restricted stock units issued	$67.17	$63.71
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
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount withheld on behalf of employees for future purchases	$70.50			70.5

Stockholders_Equity_Stock_Acti

Stockholders' Equity - Stock Activity (Detail) (USD $)	3 Months Ended
	Apr. 30, 2015
Shares available for grant
Shares Available for Grant, Balance	30,789,538
Shares Available for Grant, Options granted under all plans	-597,589
Shares Available for Grant, Exercised	0
Shares Available for Grant, Expired	-858,610
Shares Available for Grant, Cancelled	782,733
Shares Available for Grant, Balance	30,427,305
Outstanding Stock Options
Outstanding Stock Options, Balance	29,458,361
Outstanding Stock Options	597,589
Outstanding Stock Options, Exercised	-3,365,914
Outstanding Stock Options, Plan shares expired	0
Outstanding Stock Options, Cancelled	-782,733
Outstanding Stock Options, Balance	25,907,303
Outstanding Stock Options, Vested or expected to vest	24,031,621
Outstanding Stock Options, Exercisable	9,224,356
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Balance	$44.36
Weighted- Average Exercise Price, Options	$66.98
Weighted- Average Exercise Price, Exercised	$33.54
Weighted- Average Exercise Price, Cancelled	$43.38
Weighted- Average Exercise Price, Expired	$0
Weighted- Average Exercise Price, Balance	$46.32
Weighted- Average Exercise Price, Vested or expected to vest	$45.64
Weighted- Average Exercise Price, Exercisable	$35.38
Aggregate Intrinsic Value
Weighted- Average Exercise Price, Balance	$686,590,080
Weighted- Average Exercise Price, Vested or expected to vest	653,176,385
Weighted- Average Exercise Price, Exercisable	$345,386,983
Restricted Stock Activity
Shares available for grant
Shares Available for Grant, Restricted stock activity	-653,021
Outstanding Stock Options
Outstanding Stock Options	0
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options	$0
Stock Grants To Board And Advisory Board Members
Shares available for grant
Shares Available for Grant, Stock grants to board and advisory board members	-53,817
Outstanding Stock Options
Outstanding Stock Options	0
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options	$0
2013 Equity Incentive Plan
Shares available for grant
Shares Available for Grant, Increase in shares authorized	908,405
Shares Available for Grant, Balance	29,751,044
Outstanding Stock Options
Outstanding Stock Options, Increase in shares authorized	0
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options	$0
2014 Inducement Equity Incentive Plan
Shares available for grant
Shares Available for Grant, Increase in shares authorized	109,666
Shares Available for Grant, Balance	676,261
Outstanding Stock Options
Outstanding Stock Options, Increase in shares authorized	0
Options Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Options	$0

Stockholders_Equity_Stock_Opti

Stockholders' Equity - Stock Options Outstanding (Detail) (USD $)	3 Months Ended
	Apr. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Number Outstanding	25,907,303
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	4 years 6 months
Weighted- Average Exercise Price, Options Outstanding	$46.32
Options Exercisable, Number of Shares	9,224,356
Options Exercisable, Weighted- Average Exercise Price	$35.38
$0.86 to $27.56
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	$0.86
Range of Exercise Prices, Maximum	$27.56
Options, Number Outstanding	3,757,745
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	2 years 10 months 24 days
Weighted- Average Exercise Price, Options Outstanding	$22.85
Options Exercisable, Number of Shares	2,777,045
Options Exercisable, Weighted- Average Exercise Price	$22.62
$27.66 to $37.95
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	$27.66
Range of Exercise Prices, Maximum	$37.95
Options, Number Outstanding	4,583,438
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	1 year 8 months 12 days
Weighted- Average Exercise Price, Options Outstanding	$36.02
Options Exercisable, Number of Shares	3,377,985
Options Exercisable, Weighted- Average Exercise Price	$35.78
$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	3,020,285
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	3 years
Weighted- Average Exercise Price, Options Outstanding	$39.94
Options Exercisable, Number of Shares	1,484,315
Options Exercisable, Weighted- Average Exercise Price	$39.65
52.3
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	4,602,478
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	5 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$52.30
Options Exercisable, Number of Shares	1,392,231
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	1,881,361
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	6 years 1 month 6 days
Weighted- Average Exercise Price, Options Outstanding	$55.21
Options Exercisable, Number of Shares	163,751
Options Exercisable, Weighted- Average Exercise Price	$55.93
$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	6,747,253
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	6 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$59.34
Options Exercisable, Number of Shares	0
Options Exercisable, Weighted- Average Exercise Price	$0
$59.37 to $67.71
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	$59.37
Range of Exercise Prices, Maximum	$67.71
Options, Number Outstanding	1,314,743
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	6 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$63.46
Options Exercisable, Number of Shares	29,029
Options Exercisable, Weighted- Average Exercise Price	$63.26

Stockholders_Equity_Schedule_o

Stockholders' Equity - Schedule of Restricted Stock Activity (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 30, 2015
Restricted Stock Outstanding
Ending Balance	21,377,180
Restricted Stock Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance	$0.00
Restricted Stock Activity
Restricted Stock Outstanding
Beginning Balance	23,144,008
Granted, Outstanding	1,072,962
Cancelled, Outstanding	-1,011,129
Vested and converted to shares, Outstanding	-1,828,661
Ending Balance	21,377,180
Expected to vest, Outstanding	18,423,081
Restricted Stock Outstanding Weighted-Average Exercise Price
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Granted	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Cancelled	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Vested and converted to shares	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance	$0.00
Restricted Stock Outstanding Aggregate Intrinsic Value
Aggregate Intrinsic Value, Ending Balance	$1,556,686
Aggregate Intrinsic Value, Expected to vest	$1,341,569

Stockholders_Equity_Shares_of_

Stockholders' Equity - Shares of Common Stock Available for Future Issuance under Stock Option Plans (Detail)	3 Months Ended
	Apr. 30, 2015	Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	25,907,303	29,458,361
Restricted stock awards and units outstanding	21,377,180
Stock available for future grant	30,427,305	30,789,538
Convertible senior notes	17,308,880
Warrants (in shares)	17,308,880
Total shares available for future grant	115,178,860
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant	29,751,044
2014 Inducement Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant	676,261
2004 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock available for future grant	2,849,312

Income_Taxes_Narrative_Details

Income Taxes - Narrative (Details) (USD $)	3 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Income Tax Disclosure [Abstract]
Provision for income taxes	$13,981,000	$12,142,000
Income (loss) before provision for income taxes	18,073,000	-84,769,000
Effective tax rate	77.00%	-14.00%
Income tax benefit recognized from stock compensation expense	43,700,000	42,600,000
Reasonably possible decrease of unrecognized tax benefits	$19,000,000

EarningsLoss_Per_Share_Reconci

Earnings/Loss Per Share - Reconciliation of Denominator Used in Calculation of Basic and Diluted Loss Per Share (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Earnings Per Share [Abstract]
Net income (loss)	$4,092	($96,911)
Weighted-average shares outstanding for basic loss per share (in shares)	653,809	612,512
Convertible senior notes (in shares)	0	0
Employee stock awards (in shares)	10,501	0
Warrants (in shares)	0	0
Adjusted weighted-average shares outstanding and assumed conversions for diluted loss per share (in shares)	664,310	612,512

EarningsLoss_Per_Share_Shares_

Earnings/Loss Per Share - Shares Excluded from Diluted Earnings or Loss Per Share (Detail)	3 Months Ended
In Thousands, unless otherwise specified	Apr. 30, 2015	Apr. 30, 2014
Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded	8,801	20,472
Convertible Senior Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded	17,309	30,662
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded	17,309	44,253

Commitments_Additional_Informa

Commitments - Additional Information (Detail) (USD $)	Apr. 30, 2015	Jan. 31, 2015
Other Commitments [Line Items]
Financing obligation, building in progress-leased facility	$145,255,000	$125,289,000
Total operating lease commitment balance	2,200,000,000
Letter of Credit
Other Commitments [Line Items]
Value of outstanding letters of credit	67,900,000
Facilities Space [Member]
Other Commitments [Line Items]
Total operating lease commitment balance	$1,900,000,000

Commitments_Schedule_of_Future

Commitments - Schedule of Future Minimum Lease Payments under Non-Cancelable Operating and Capital Leases (Detail) (USD $)	Apr. 30, 2015
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under non-cancelable capital leases, Remaining nine months of fiscal 2016	$86,398
Future minimum lease payments under non-cancelable capital leases, Fiscal 2017	114,874
Future minimum lease payments under non-cancelable capital leases, Fiscal 2018	119,086
Future minimum lease payments under non-cancelable capital leases, Fiscal 2019	113,005
Future minimum lease payments under non-cancelable capital leases, Fiscal 2020	201,507
Future minimum lease payments under non-cancelable capital leases, Thereafter	0
Future minimum lease payments under non-cancelable capital leases, Total	634,870
Less: amount representing interest	-81,799
Present value of capital lease obligations	553,071
Future minimum lease payments under non-cancelable operating leases, Remaining nine months of fiscal 2016	227,050
Future minimum lease payments under non-cancelable operating leases, Fiscal 2017	287,795
Future minimum lease payments under non-cancelable operating leases, Fiscal 2018	244,615
Future minimum lease payments under non-cancelable operating leases, Fiscal 2019	188,841
Future minimum lease payments under non-cancelable operating leases, Fiscal 2020	181,765
Future minimum lease payments under non-cancelable operating leases, Thereafter	1,052,718
Future minimum lease payments under non-cancelable operating leases, Total	2,182,784
Financing Obligation, Building in Progress-Leased Facility, Remaining nine months of fiscal 2016	1,777
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2017	16,877
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2018	21,107
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2019	21,551
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2020	21,995
Financing Obligation, Building in Progress-Leased Facility, Thereafter	252,517
Financing Obligation, Building in Progress-Leased Facility	$335,824

RelatedParty_Transactions_Deta

Related-Party Transactions (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Apr. 30, 2015
Related Party Transactions [Abstract]
Value of resources donated to related parties	$0.30
Value of donated subscriptions to related parties	$14.10