Salesforce (CRM) 10-K5 Mar 142014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Billions, except Share data in Millions, unless otherwise specified	Jan. 31, 2014	Jul. 31, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-K	'
Amendment Flag	'false	'
Document Period End Date	31-Jan-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'FY	'
Trading Symbol	'CRM	'
Entity Registrant Name	'SALESFORCE COM INC	'
Entity Central Index Key	'0001108524	'
Current Fiscal Year End Date	'--01-31	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Current Reporting Status	'Yes	'
Entity Voluntary Filers	'No	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	610.1	'
Entity Public Float	'	$15.50

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jan. 31, 2014		Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014		Jan. 31, 2013
Current assets:	'		'
Cash and cash equivalents	$781,635		$747,245
Short-term marketable securities	57,139		120,376
Accounts receivable, net	1,360,837		872,634
Deferred commissions	171,461		142,311
Prepaid expenses and other current assets	309,180		133,314
Total current assets	2,680,252		2,015,880
Marketable securities, noncurrent	482,243		890,664
Property and equipment, net	1,240,746		604,669
Deferred commissions, noncurrent	153,459		112,082
Capitalized software, net	481,917		207,323
Goodwill	3,500,823		1,529,378
Other assets, net	613,490		168,960
Total assets	9,152,930		5,528,956
Current liabilities:	'		'
Accounts payable, accrued expenses and other liabilities	934,324		597,706
Deferred revenue	2,473,705		1,798,640
Convertible 0.75% senior notes, net	542,159		521,278
Term loan, current	30,000		0
Total current liabilities	3,980,188		2,917,624
Convertible 0.25% senior notes, net	1,046,930		0
Term loan, noncurrent	255,000		0
Deferred revenue, noncurrent	48,410		64,355
Other noncurrent liabilities	757,187		175,732
Total liabilities	6,087,715		3,157,711
Temporary equity	26,705		53,612
Commitments and contingencies (Note 10)	'		'
Stockholders' equity:	'		'
Preferred stock, $0.001 par value; 5,000 shares authorized and none issued and outstanding	0		0
Common stock, $0.001 par value; 1,600,000 shares authorized, 610,143 and 585,627 issued and outstanding at January 31, 2014 and 2013, respectively	610	[1]	586	[1]
Additional paid-in capital	3,363,377	[1]	2,410,892	[1]
Accumulated other comprehensive income	17,680		17,137
Accumulated deficit	-343,157		-110,982
Total stockholders' equity	3,038,510		2,317,633
Total liabilities, temporary equity and stockholders' equity	$9,152,930		$5,528,956

[1]	Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, except Per Share data, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Accounts receivable, allowance for doubtful accounts	$4,769	$1,853
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	5,000	5,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	1,600,000	1,600,000
Common stock, issued	610,143	585,627
Common stock, outstanding	610,143	585,627
Current	'	'
Interest percentage of Convertible senior notes	0.75%	'
Non Current	'	'
Interest percentage of Convertible senior notes	0.25%	'

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jan. 31, 2014		Jan. 31, 2013		Jan. 31, 2012
Revenues:	'		'		'
Subscription and support	$3,824,542		$2,868,808		$2,126,234
Professional services and other	246,461		181,387		140,305
Total revenues	4,071,003		3,050,195		2,266,539
Cost of revenues:	'		'		'
Subscription and support	711,880	[1],[2]	494,187	[1],[2]	360,758	[1],[2]
Professional services and other	256,548	[1],[2]	189,392	[1],[2]	128,128	[1],[2]
Total cost of revenues	968,428	[1],[2]	683,579	[1],[2]	488,886	[1],[2]
Gross profit	3,102,575		2,366,616		1,777,653
Operating expenses:	'		'		'
Research and development	623,798	[1],[2]	429,479	[1],[2]	295,347	[1],[2]
Marketing and sales	2,168,132	[1],[2]	1,614,026	[1],[2]	1,169,610	[1],[2]
General and administrative	596,719	[1],[2]	433,821	[1],[2]	347,781	[1],[2]
Total operating expenses	3,388,649	[1],[2]	2,477,326	[1],[2]	1,812,738	[1],[2]
Loss from operations	-286,074		-110,710		-35,085
Investment income	10,218		19,562		23,268
Interest expense	-77,211		-30,948		-17,045
Other expense	-4,868		-5,698		-4,455
Income (loss) before benefit (provision) for income taxes and noncontrolling interest	-357,935		-127,794		-33,317
Benefit from (provision for) income taxes	125,760		-142,651		21,745
Net loss	($232,175)		($270,445)		($11,572)
Earnings per share-basic and diluted:	'		'		'
Basic net loss per share	($0.39)	[3]	($0.48)	[3]	($0.02)	[3]
Diluted net loss per share	($0.39)	[3]	($0.48)	[3]	($0.02)	[3]
Shares used in computing basic net loss per share	597,613	[3]	564,896	[3]	541,208	[3]
Shares used in computing diluted net loss per share	597,613	[3]	564,896	[3]	541,208	[3]

[1]	Amounts include stock-based expenses, as follows:
[2]	Amounts include amortization of purchased intangibles from business combinations, as follows
[3]	Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Consolidated_Statements_of_Ope1

Consolidated Statements of Operations (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Stock-based expenses	$503,280	$379,350	$229,258
Cost of Revenues	'	'	'
Amortization of purchased intangibles from business combinations	109,356	77,249	60,069
Stock-based expenses	45,608	33,757	17,451
Marketing and Sales	'	'	'
Amortization of purchased intangibles from business combinations	37,179	10,922	7,250
Stock-based expenses	258,571	199,284	115,730
Research and Development	'	'	'
Stock-based expenses	107,420	76,333	45,894
General and Administrative	'	'	'
Stock-based expenses	$91,681	$69,976	$50,183

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'
Net loss	($232,175)	($270,445)	($11,572)
Other comprehensive income, before tax and net of reclassification adjustments:	'	'	'
Foreign currency translation and other gains (losses)	-4,930	4,783	9,512
Unrealized gains (losses) on investments	8,120	-329	-5,658
Other comprehensive income, before tax	3,190	4,454	3,854
Tax effect	-2,647	0	2,110
Other comprehensive income, net of tax	543	4,454	5,964
Comprehensive loss	($231,632)	($265,991)	($5,608)

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)		Total	Common Stock		Additional Paid-in Capital		Accumulated Other Comprehensive Income/(Loss)	Retained Earnings (Accumulated Deficit)
In Thousands, except Share data		Total	Common Stock		Additional Paid-in Capital		Accumulated Other Comprehensive Income/(Loss)	Retained Earnings (Accumulated Deficit)
Beginning Balances at Jan. 31, 2011		$1,276,491	$532	[1]	$1,098,205	[1]	$6,719	$171,035
Beginning Balances (in shares) at Jan. 31, 2011	[1]	'	531,684,000		'		'	'
Exercise of stock options and stock grants to board members for board services		111,780	10	[1]	111,770	[1]	0	0
Exercise of stock options and stock grants to board members for board services (in shares)	[1]	'	10,070,000		'		'	'
Vested restricted stock units converted to shares		1	4	[1]	-3	[1]	0	0
Vested restricted stock units converted to shares, shares	[1]	'	4,300,000		'		'	'
Shares issued related to business combinations (in shares)	[1]	'	2,092,000		'		'	'
Shares issued related to business combinations		56,614	2	[1]	56,612	[1]	0	0
Tax benefits from employee stock plans		1,611	0	[1]	1,611	[1]	0	0
Stock-based expenses		225,212	0	[1]	225,212	[1]	0	0
Temporary equity reclassification		-78,741	0	[1]	-78,741	[1]	0	0
Other comprehensive income, net of tax		5,964	0	[1]	0	[1]	5,964	0
Net loss		-11,572	0	[1]	0	[1]	0	-11,572
Ending Balance at Jan. 31, 2012		1,587,360	548	[1]	1,414,666	[1]	12,683	159,463
Ending Balance (in shares) at Jan. 31, 2012	[1]	'	548,146,000		'		'	'
Exercise of stock options and stock grants to board members for board services		279,006	20	[1]	278,986	[1]	0	0
Exercise of stock options and stock grants to board members for board services (in shares)	[1]	'	20,237,000		'		'	'
Vested restricted stock units converted to shares		1	7	[1]	-6	[1]	0	0
Vested restricted stock units converted to shares, shares	[1]	'	6,564,000		'		'	'
Shares issued related to business combinations (in shares)	[1]	'	7,727,000		'		'	'
Shares issued related to business combinations		240,028	8	[1]	240,020	[1]	0	0
Shares issued under employee stock plans (in shares)	[1]	'	2,953,000		'		'	'
Shares issued under employee stock plans		69,070	3	[1]	69,067	[1]	0	0
Tax benefits from employee stock plans		7,189	0	[1]	7,189	[1]	0	0
Stock-based expenses		375,841	0	[1]	375,841	[1]	0	0
Temporary equity reclassification		25,129	0	[1]	25,129	[1]	0	0
Other comprehensive income, net of tax		4,454	0	[1]	0	[1]	4,454	0
Net loss		-270,445	0	[1]	0	[1]	0	-270,445
Ending Balance at Jan. 31, 2013		2,317,633	586	[1]	2,410,892	[1]	17,137	-110,982
Ending Balance (in shares) at Jan. 31, 2013	[1]	'	585,627,000		'		'	'
Exercise of stock options and stock grants to board members for board services		196,578	10	[1]	197,012	[1]	0	0
Exercise of stock options and stock grants to board members for board services (in shares)		9,932,832	9,952,000	[1]	'		'	'
Vested restricted stock units converted to shares		9	9	[1]	0	[1]	0	0
Vested restricted stock units converted to shares, shares	[1]	'	9,265,000		'		'	'
Shares issued related to business combinations (in shares)	[1]	'	2,367,000		'		'	'
Shares issued related to business combinations		81,193	2	[1]	81,191	[1]	0	0
Shares issued under employee stock plans (in shares)	[1]	'	2,932,000		'		'	'
Shares issued under employee stock plans		92,485	3	[1]	92,482	[1]	0	0
Tax benefits from employee stock plans		8,048	0	[1]	8,048	[1]	0	0
Stock-based expenses		495,059	0	[1]	494,615	[1]	0	0
Temporary equity reclassification		26,907	0	[1]	26,907	[1]	0	0
Equity component of the convertible notes issuance, net		121,230	0	[1]	121,230	[1]	0	0
Purchase of convertible note hedges		-153,800	0	[1]	-153,800	[1]	0	0
Issuance of warrants		84,800	0	[1]	84,800	[1]	0	0
Other comprehensive income, net of tax		543	0	[1]	0	[1]	543	0
Net loss		-232,175	0	[1]	0	[1]	0	-232,175
Ending Balance at Jan. 31, 2014		$3,038,510	$610	[1]	$3,363,377	[1]	$17,680	($343,157)
Ending Balance (in shares) at Jan. 31, 2014	[1]	'	610,143,000		'		'	'

[1]	Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Operating activities:	'	'	'
Net loss	($232,175)	($270,445)	($11,572)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'	'
Depreciation and amortization	369,423	216,795	157,286
Amortization of debt discount and transaction costs	49,796	24,086	10,347
Amortization of deferred commissions	194,553	154,818	107,195
Expenses related to employee stock plans	503,280	379,350	229,258
Excess tax benefits from employee stock plans	-8,144	-14,933	-6,018
Changes in assets and liabilities, net of business combinations:	'	'	'
Accounts receivable, net	-424,702	-183,242	-244,947
Deferred commissions	-265,080	-232,591	-167,199
Prepaid expenses, current assets and other assets	105,218	-9,718	-7,853
Accounts payable, accrued expenses and other liabilities	-29,043	193,358	80,336
Deferred revenue	612,343	479,419	444,674
Net cash provided by operating activities	875,469	736,897	591,507
Investing activities:	'	'	'
Business combinations, net of cash acquired	-2,617,302	-579,745	-422,699
Land activity and building improvements	0	-4,106	-19,655
Strategic investments	-31,160	-9,695	-37,370
Purchases of marketable securities	-558,703	-1,021,287	-623,231
Sales of marketable securities	1,038,284	706,893	724,564
Maturities of marketable securities	36,436	144,623	40,346
Capital expenditures	-299,110	-175,601	-151,645
Net cash used in investing activities	-2,431,555	-938,918	-489,690
Financing activities:	'	'	'
Proceeds from borrowings on convertible senior notes, net	1,132,750	0	0
Proceeds from issuance of warrants	84,800	0	0
Purchase of convertible note hedge	-153,800	0	0
Proceeds from term loan, net	298,500	0	0
Proceeds from employee stock plans	289,931	351,366	116,565
Excess tax benefits from employee stock plans	8,144	14,933	6,018
Contingent consideration payment related to prior business combinations	0	0	-16,200
Payments on convertible senior notes	-5,992	0	0
Principal payments on capital lease obligations	-41,099	-31,754	-30,533
Principal payments on term loan	-15,000	0	0
Net cash provided by financing activities	1,598,234	334,545	75,850
Effect of exchange rate changes	-7,758	7,437	5,325
Net increase in cash and cash equivalents	34,390	139,961	182,992
Cash and cash equivalents, beginning of period	747,245	607,284	424,292
Cash and cash equivalents, end of period	781,635	747,245	607,284
Cash paid during the period for:	'	'	'
Interest	21,503	6,890	6,587
Income taxes, net of tax refunds	28,870	53,089	20,981
Non-cash financing and investing activities:	'	'	'
Property and equipment acquired under capital leases	492,810	33,392	57,839
Building in progress-leased facility acquired under financing obligation	40,171	0	0
Fair value of equity awards assumed in business combinations	$19,037	$37,898	$7,318

Summary_of_Business_and_Signif

Summary of Business and Significant Accounting Policies

12 Months Ended

Jan. 31, 2014

Accounting Policies [Abstract]

Summary of Business and Significant Accounting Policies

1. Summary of Business and Significant Accounting Policies

Description of Business

Salesforce.com, inc. (the “Company”) is a 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 in entirely new ways. With four core service offerings, the Sales Cloud, the Service Cloud, the Marketing Cloud and the Salesforce1 Platform, the Company provides a next generation customer platform.

Fiscal Year

The Company’s fiscal year ends on January 31. References to fiscal 2014, for example, refer to the fiscal year ending January 31, 2014.

Basis of Presentation

On March 20, 2013, the Company’s certificate of incorporation was amended to increase the number of authorized shares of common stock from 400.0 million to 1.6 billion in order to provide for a four-for-one stock split of the common stock effected in the form of a stock dividend. The record date for the stock split was April 3, 2013, and the additional shares were distributed on April 17, 2013. Each stockholder of record on the close of business on the record date received three additional shares of common stock for each share held. All share and per share data presented herein reflect the impact of the increase in authorized shares and the stock split, as appropriate.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the Company’s consolidated financial statements and notes thereto.

Significant estimates and assumptions made by management include the determination of:

•

the best estimate of selling price of the deliverables included in multiple-deliverable revenue arrangements,

•

the fair value of assets acquired and liabilities assumed for business combinations,

•

the recognition, measurement and valuation of current and deferred income taxes,

•

the recognition and measurement of loss contingencies,

•

the estimate of real estate sublease rental rates and market conditions,

•

the fair value of the 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 recoverability of long-lived assets (property and equipment, goodwill and identified intangibles).

Actual results could differ materially from those estimates.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.

Segments

The Company operates as one operating segment. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, who is the chief executive officer, in deciding how to allocate resources and assessing performance. Over the past few years, the Company has completed several acquisitions. These acquisitions have allowed the Company to expand its offerings, presence and reach in various market segments of the enterprise cloud computing market. While the Company has offerings in multiple enterprise cloud computing market segments, the Company’s business operates in one operating segment because the Company’s chief operating decision maker evaluates the Company’s financial information and resources and assesses the performance of these resources on a consolidated basis. Since the Company operates in one operating segment, all required financial segment information can be found in the consolidated financial statements.

Concentrations of Credit Risk and Significant Customers

The Company’s financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities and trade accounts receivable. 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. The 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 customer accounted for more than five percent of accounts receivable at January 31, 2014 and 2013, respectively. No single customer accounted for five percent or more of total revenue during fiscal 2014, 2013, and 2012.

Geographic Locations

As of January 31, 2014 and 2013, assets located outside the Americas were 12 percent and 16 percent of total assets, respectively.

Revenues by geographical region are as follows (in thousands):

Fiscal Year Ended January 31,

2014

2013

2012

Americas

2,899,837

2,123,736

1,540,289

Europe

741,220

525,304

408,456

Asia Pacific

429,946

401,155

317,794

4,071,003

3,050,195

2,266,539

Americas revenue attributed to the United States was approximately 96 percent, 94 percent and 93 percent in fiscal 2014, 2013 and 2012, respectively.

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 purchasing 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 this deliverable 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.

The Company determined 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 or quarterly installments. Deferred revenue is influenced by several factors, including seasonality, the compounding effects of renewals, invoice duration, invoice timing 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 consolidated statements of operations.

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents are stated at fair value.

Marketable Securities

Management determines the appropriate classification of marketable securities at the time of purchase and reevaluates such determination at each balance sheet date. Securities are classified as available for sale and are carried at fair value, with the change in unrealized gains and losses, net of tax, reported as a separate component on the consolidated statements of comprehensive 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 lease term or 10 years

Building improvements

Amortized over the estimated useful lives of the respective assets when they are ready for their intended use

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. 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 consolidated statements of operations.

Leases and Asset Retirement Obligations

The Company categorizes leases at their inception as either operating or capital leases. On 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 into operating expense, and the recorded liabilities are accreted to the future value of the estimated retirement costs.

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 will continue to account for the facility as a financing obligation upon completion of the construction project.

Accounting for Stock-Based Compensation

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:

Fiscal Year Ended January 31,

Stock Options

2014

2013

2012

Volatility

37 - 43

43 - 51

47 - 51

Estimated life

3.4 years

3.7 years

Risk-free interest rate

0.48 - 1.21

0.43 - 0.77

0.68 - 1.77

Weighted-average fair value per share of grants

14.08

12.94

12.29

Fiscal Year Ended January 31,

ESPP

2014

2013

2012

Volatility

31 - 35

39 - 46

50 - 53

Estimated life

0.75 years

Risk-free interest rate

0.07 - 0.10

0.03 - 0.22

0.95 - 1.08

Weighted-average fair value per share of grants

10.3

11.39

8.59

The Company estimated its future stock price volatility considering both its observed option-implied volatilities and its historical volatility calculations. Management believes this is the best estimate of the expected volatility over the expected life of its stock options and stock purchase rights.

The estimated life for the stock options was based on an analysis of historical exercise activity. The estimated life for the ESPP was based on the two purchase periods within each offering period. The risk-free interest rate is based on the rate for a U.S. government security with the same estimated life at the time of the option grant and the stock purchase rights.

Advertising Expenses

Advertising is expensed as incurred. Advertising expense was $155.8 million, $110.7 million and $80.3 million for fiscal 2014, 2013 and 2012, respectively.

Income Taxes

The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on temporary differences between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws is recognized in the consolidated statement of operations in the period that includes the enactment date.

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.

Valuation allowances are established when necessary to reduce deferred tax assets to the amounts 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 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.

Foreign Currency Translation

The functional currency of the Company’s major foreign subsidiaries is generally the local currency. Adjustments resulting from translating foreign functional currency financial statements into U.S. dollars are recorded as a separate component on the consolidated statements of comprehensive 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 consolidated financial statements.

The Company has also agreed to indemnify its directors and executive officers for costs associated with any fees, expenses, judgments, fines and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by the Company, arising out of that person’s services as the Company’s director or officer or that person’s services provided to any other company or enterprise at the Company’s request. The Company maintains director and officer insurance coverage that would generally enable the Company to recover a portion of any future amounts paid. The Company may also be subject to indemnification obligations by law with respect to the actions of its employees under certain circumstances and in certain jurisdictions.

New Accounting Pronouncements

In July 2012, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2012-02, Intangibles—Goodwill and Other (Topic 350)—Testing Indefinite-Lived Intangible Assets for Impairment (ASU 2012-02), to allow entities to use a qualitative approach to test indefinite-lived intangible assets for impairment. ASU 2012-02 permits an entity to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying value. If it is concluded that this is the case, it is necessary to perform the currently prescribed quantitative impairment test by comparing the fair value of the indefinite-lived intangible asset with its carrying value. Otherwise, the quantitative impairment test is not required. The Company adopted ASU 2012-02 in fiscal 2014. The adoption did not have a material effect on the consolidated financial statements.

In July 2013, the FASB issued Accounting Standards Update No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (ASU 2013-11), which provides guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss (“NOL”) carryforward, a similar tax loss, or a tax credit carryforward exists. ASU 2013-11 supports the approach for companies to present an unrecognized tax benefit as a reduction of a deferred tax asset for a NOL or tax credit carryforward whenever the NOL or tax credit carryforward would be available to reduce the additional taxable income or tax due if the tax position is disallowed. This approach requires companies to assess whether to net the unrecognized tax benefit with a deferred tax asset as of the reporting date. The Company adopted ASU 2013-11 in fiscal 2014 and the adoption did not have a material effect on the consolidated financial statements.

Investments

Investments	12 Months Ended
Investments	Jan. 31, 2014
Investments Schedule [Abstract]	'
Investments	'
	2. Investments
	Marketable Securities
	At January 31, 2014, marketable securities consisted of the following (in thousands):


	Investments classified as Marketable Securities		Amortized			Unrealized				Unrealized				Fair Value
	Investments classified as Marketable Securities		Cost			Gains				Losses				Fair Value
	Corporate notes and obligations		$	340,706		$	1,314			$	(170	)		$	341,850
	U.S. treasury securities			16,016			28				0				16,044
	Mortgage backed obligations			24,888			281				(93	)			25,076
	Asset backed securities			38,213			39				(35	)			38,217
	Municipal securities			2,000			1				(3	)			1,998
	Foreign government obligations			24,305			171				(2	)			24,474
	U.S. agency obligations			14,726			9				(10	)			14,725
	Covered bonds			76,282			717				(1	)			76,998

	Total marketable securities		$	537,136		$	2,560			$	(314	)		$	539,382

	At January 31, 2013, marketable securities consisted of the following (in thousands):


	Investments classified as Marketable Securities		Amortized			Unrealized				Unrealized				Fair Value
	Investments classified as Marketable Securities		Cost			Gains				Losses				Fair Value
	Corporate notes and obligations		$	685,695		$	5,113			$	(919	)		$	689,889
	U.S. treasury securities			38,864			20				(15	)			38,869
	Mortgage backed obligations			12,447			278				(2	)			12,723
	Municipal securities			2,697			1				(32	)			2,666
	Foreign government obligations			9,572			72				(3	)			9,641
	Collateralized mortgage obligations			150,794			1,775				(693	)			151,876
	U.S. agency obligations			105,224			157				(5	)			105,376

	Total marketable securities		$	1,005,293		$	7,416			$	(1,669	)		$	1,011,040

	The duration of the investments classified as marketable securities is as follows (in thousands):


			As of January 31,
			2014			2013
	Recorded as follows:
	Short-term (due in one year or less)		$	57,139		$	120,376
	Long-term (due after one year)			482,243			890,664

			$	539,382		$	1,011,040


	As of January 31, 2014, 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
			Fair Value			Losses				Fair Value				Losses			Fair Value		Losses
	Corporate notes and obligations		$	95,011		$	(168	)		$	1,324			$	(2	)	$	96,335	$	(170	)
	Mortgage backed obligations			7,212			(60	)			2,863				(33	)		10,075		(93	)
	Asset backed securities			10,345			(31	)			1,924				(4	)		12,269		(35	)
	Municipal securities			997			(3	)			0				0			997		(3	)
	Foreign government obligations			2,999			(1	)			6,498				(1	)		9,497		(2	)
	U.S. agency obligations			7,219			(10	)			0				0			7,219		(10	)
	Covered bonds			2,032			(1	)			0				0			2,032		(1	)

			$	125,815		$	(274	)		$	12,609			$	(40	)	$	138,424	$	(314	)

	The unrealized loss for each of these fixed rate marketable securities ranged from less than $1,000 to $18,000. 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 January 31, 2014. 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.
During fiscal 2014, the Company transferred certain amounts within the fair value hierarchy. U.S. treasury securities and Foreign government obligations at January 31, 2014 are now reported as Level 2 fair value instruments rather than Level 1 based on market activity.
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 January 31, 2014 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				January 31,
		for Identical Assets			Inputs				Inputs				2014
		(Level 1)			(Level 2)				(Level 3)
Cash equivalents (1):
Time deposits		$	0		$	212,700			$	0			$	212,700
Money market mutual funds			87,898			0				0				87,898
Marketable securities:
Corporate notes and obligations			0			341,850				0				341,850
U.S. treasury securities			0			16,044				0				16,044
Mortgage backed obligations			0			25,076				0				25,076
Asset backed securities			0			38,217				0				38,217
Municipal securities			0			1,998				0				1,998
Foreign government obligations			0			24,474				0				24,474
U.S. agency obligations			0			14,725				0				14,725
Covered bonds			0			76,998				0				76,998
Foreign currency derivative contracts (2)			0			1,598				0				1,598

Total Assets		$	87,898		$	753,680			$	0			$	841,578
Liabilities
Foreign currency derivative contracts (3)		$	0		$	1,801			$	0			$	1,801

Total Liabilities		$	0		$	1,801			$	0			$	1,801


-1	Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of January 31, 2014, in addition to $481.0 million of cash.
-2	Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of January 31, 2014.
-3	Included in “accounts payable, accrued expenses and other liabilities” in the consolidated balance sheet as of January 31, 2014.

The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2013 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				January 31,
		for Identical Assets			Inputs				Inputs				2013
		(Level 1)			(Level 2)				(Level 3)
Cash equivalents (1):
Time deposits		$	0		$	22,372			$	0			$	22,372
Money market mutual funds			385,700			0				0				385,700
Marketable securities:
Corporate notes and obligations			0			689,889				0				689,889
U.S. treasury securities			38,869			0				0				38,869
Mortgage backed obligations			0			12,723				0				12,723
Municipal securities			0			2,666				0				2,666
Foreign government obligations			9,641			0				0				9,641
Collateralized mortgage obligations			0			151,876				0				151,876
U.S. agency obligations			0			105,376				0				105,376
Foreign currency derivative contracts (2)			0			5,643				0				5,643

Total Assets		$	434,210		$	990,545			$	0			$	1,424,755

Liabilities
Foreign currency derivative contracts (3)		$	0		$	3,307			$	0			$	3,307

Total Liabilities		$	0		$	3,307			$	0			$	3,307


-1	Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of January 31, 2013, in addition to $339.2 million of cash.
-2	Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of January 31, 2013.
-3	Included in “accounts payable, accrued expenses and other liabilities” in the accompanying consolidated balance sheet as of January 31, 2013.
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 Euros, Japanese yen, Canadian dollars and British pounds. 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 program is not designated for trading or speculative purposes. As of January 31, 2014 and 2013, the foreign currency derivative contracts that were not settled are recorded at fair value on the consolidated balance sheets.
Foreign currency derivative contracts are marked-to-market at the end of each reporting period with gains and losses recognized as other expense to offset the gains or losses resulting from the settlement or remeasurement of the underlying foreign currency denominated receivables and payables. While the contract or notional amount is often used to express the volume of foreign currency derivative contracts, the amounts potentially subject to credit risk are generally limited to the amounts, if any, by which the counterparties’ obligations under the agreements exceed the obligations of the Company to the counterparties.

Details on outstanding foreign currency derivative contracts related primarily to intercompany receivables and payables are presented below (in thousands):


		As of January 31,
		2014			2013
Notional amount of foreign currency derivative contracts		$	563,060		$	692,637
Fair value of foreign currency derivative contracts		$	(203	)	$	2,336
The fair value of the Company’s outstanding derivative instruments are summarized below (in thousands):


					Fair Value of Derivative Instruments
					As of January 31,
		Balance Sheet Location			2014				2013
Derivative Assets
Derivatives not designated as hedging instruments:
Foreign currency derivative contracts			Prepaid expenses and		$	1,598			$	5,643
Foreign currency derivative contracts			other current assets		$	1,598			$	5,643

Derivative Liabilities
Derivatives not designated as hedging instruments:
Foreign currency derivative contracts			Accounts payable,		$	1,801			$	3,307
			accrued expenses
			and other liabilities

The effect of the derivative instruments not designated as hedging instruments on the consolidated statements of operations during fiscal 2014, 2013 and 2012, respectively, are summarized below (in thousands):


Derivatives Not Designated as Hedging Instruments		Gains on Derivative Instruments
Derivatives Not Designated as Hedging Instruments		Recognized in Income
					Fiscal Year Ended January 31,
		Location			2014				2013				2012
Foreign currency derivative contracts			Other expense		$	108			$	16,591			$	6,221

Strategic Investments
The Company has three 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 January 31, 2014, the fair value of the Company’s marketable equity securities of $15.5 million includes an unrealized gain of $13.3 million. As of January 31, 2013, the Company had four investments in marketable equity securities which had a fair value of $4.9 million which included an unrealized gain of $1.7 million. These investments are recorded in other assets, net on the 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 price and inherent lack of liquidity.

As of January 31, 2014 and 2013, the carrying value of the Company’s investments in privately-held companies was $77.0 million and $46.8 million, respectively. These investments are recorded in other assets, net on the consolidated balance sheets.
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):


		Fiscal Year Ended January 31,
		2014			2013				2012
Interest income		$	9,512		$	17,903			$	20,791
Realized gains			5,952			5,007				6,542
Realized losses			(5,246	)		(3,348	)			(4,065	)

Total investment income		$	10,218		$	19,562			$	23,268

Reclassification adjustments out of accumulated other comprehensive loss into net loss were immaterial for fiscal 2014, 2013 and 2012, respectively.

Property_and_Equipment

Property and Equipment	12 Months Ended
Property and Equipment	Jan. 31, 2014
Property Plant And Equipment [Abstract]	'
Property and Equipment	'
	3. Property and Equipment
	Property and equipment consisted of the following (in thousands):


		As of January 31,
		2014			2013
	Land	$	248,263		$	248,263
	Building improvements		49,572			49,572
	Computers, equipment and software		931,171			328,318
	Furniture and fixtures		58,956			38,275
	Leasehold improvements		296,390			193,181
	Building in progress—leased facility		40,171			0

			1,624,523			857,609
	Less accumulated depreciation and amortization		(383,777	)		(252,940	)

		$	1,240,746		$	604,669

	Depreciation and amortization expense totaled $185.9 million, $101.1 million and $69.8 million during fiscal 2014, 2013 and 2012, respectively.
	Computers, equipment and software at January 31, 2014 and 2013 included a total of $612.0 million and $136.9 million acquired under capital lease agreements, respectively. Accumulated amortization relating to computers, equipment and software under capital leases totaled $109.1 million and $57.8 million, respectively, at January 31, 2014 and 2013. Amortization of assets under capital leases is included in depreciation and amortization expense.
	In June 2013, the Company entered into a large capital lease agreement for software for a period of nine years, which consists of the contractual term of six years and a renewal option of three years. The capitalized portion will be depreciated over the estimated useful life of the software, which is nine years.
	In November 2010, the Company purchased approximately 14 acres of undeveloped real estate in San Francisco, California, including entitlements and improvements associated with the land. In addition to the amounts reflected in the table above, the Company recorded $23.3 million related to the perpetual parking rights and classified such rights as a purchased intangible asset as it represents an intangible right to use the existing garage. The Company has capitalized pre-construction activities related to the development of the land, including interest costs and property taxes since the November 2010 purchase. During the first quarter of fiscal 2013, the Company suspended pre-construction activity. The total carrying value of the land, building improvements and perpetual parking rights was $321.1 million as of January 31, 2014. The Company continues to evaluate its future needs for office facilities space and its options for the undeveloped real estate, which may include selling a portion of or all the real estate holdings, or suspending pre-construction activity for several more years.
	In December 2012, the Company entered into a lease agreement for approximately 445,000 rentable square feet of office space 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 January 31, 2014, the Company capitalized $40.2 million of construction costs, based on the construction costs incurred to date by the landlord, and recorded a corresponding noncurrent financing obligation liability of $40.2 million. 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 (See Note 10 for future commitment details). The obligation will be settled through monthly lease payments to the landlord once the construction is complete and the office space is ready for occupancy.
	There was no impairment of long-lived assets during fiscal 2014, 2013 and 2012, respectively.

Business_Combinations

Business Combinations	12 Months Ended
Business Combinations	Jan. 31, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	4. Business Combinations
	ExactTarget
	On July 12, 2013, the Company acquired for cash the outstanding stock of ExactTarget, a leading global provider of cross-channel, digital marketing solutions that empower organizations of all sizes to communicate with their customers through the digital channels they use most. The Company acquired ExactTarget to, among other things, create a world-class marketing platform across the channels of email, social, mobile and the web. The Company has included the financial results of ExactTarget in the consolidated financial statements from the date of acquisition. The acquisition date fair value of the consideration transferred for ExactTarget was approximately $2.6 billion, including the proceeds from the term loan of $300.0 million (see Note 5), which consisted of the following (in thousands):


			Fair value
	Cash		$	2,567,098
	Fair value of equity awards assumed			17,428

	Total		$	2,584,526

	The estimated fair value of the stock options assumed by the Company was determined using the Black-Scholes option pricing model. The share conversion ratio of 0.84 was applied to convert ExactTarget’s outstanding equity awards for ExactTarget’s common stock into equity awards for shares of the Company’s common stock.

	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


			Fair Value
	Cash, cash equivalents and marketable securities		$	91,549
	Accounts receivable			63,320
	Other current assets			20,355
	Customer contract asset, current and noncurrent			205,033
	Property and equipment			64,782
	Other noncurrent assets			4,379
	Intangible assets			706,064
	Goodwill			1,848,653
	Accounts payable, accrued expenses and other liabilities			(65,636	)
	Deferred revenue, current and noncurrent			(46,615	)
	Customer liability, current and noncurrent			(144,792	)
	Other liabilities, noncurrent			(3,104	)
	Deferred tax liability			(159,462	)

	Net assets acquired		$	2,584,526

	The excess of purchase consideration over the fair value of net tangible and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible and identifiable intangible assets acquired and liabilities assumed are based on management’s estimates and assumptions. The deferred tax liability established was primarily a result of the difference in the book basis and tax basis related to the identifiable intangible assets. The estimated fair values of assets acquired and liabilities assumed, specifically current and noncurrent income taxes payable and deferred taxes, may be subject to change as additional information is received and certain tax returns are finalized. Thus the provisional measurements of fair value set forth above are subject to change. The Company expects to finalize the valuation as soon as practicable, but not later than one-year from the acquisition date.
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


			Fair Value				Useful Life
	Developed technologies		$	307,200				4 - 7 years
	Customer relationships			362,200				6 - 8 years
	Trade name and trademark			29,400				10 years
	Other purchased intangible assets			7,264				3 - 4 years

	Total intangible assets subject to amortization		$	706,064

	Developed technologies represent the estimated fair value of ExactTarget’s digital marketing technology. Customer relationships represent the estimated fair values of the underlying relationships with ExactTarget customers. The goodwill balance is primarily attributed to the assembled workforce and expanded market opportunities when integrating ExactTarget’s digital marketing technology with the Company’s other offerings. The goodwill balance is not deductible for U.S. income tax purposes.
	The Company assumed unvested options and restricted stock with an estimated fair value of $102.2 million. Of the total consideration, $17.4 million was allocated to the purchase consideration and $84.8 million was allocated to future services and will be expensed over the remaining service periods on a straight-line basis.

	The amounts of revenue and earnings of ExactTarget included in the Company’s consolidated statement of operations from the acquisition date of July 12, 2013 to the period ending January 31, 2014 are as follows (in thousands):


	Total revenues		$	194,008
	Loss		$	(152,948	)
	The following pro forma financial information summarizes the combined results of operations for the Company and ExactTarget, which was significant for purposes of the unaudited pro forma financial information disclosure, as though the companies were combined as of the beginning of the Company’s fiscal 2013.
	The unaudited pro forma financial information was as follows (in thousands):


			Fiscal Year Ended
			January 31,
			2014				2013
	Total revenues		$	4,267,166			$	3,279,421
	Loss		$	(364,659	)		$	(346,636	)
	The pro forma financial information for all periods presented has been calculated after adjusting the results of ExactTarget to reflect the business combination accounting effects resulting from this acquisition including the amortization expense from acquired intangible assets and the stock-based compensation expense for unvested stock options and restricted stock awards assumed as though the acquisition occurred as of the beginning of the Company’s fiscal year 2013. The pro forma financial information is for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place at the beginning of the Company’s fiscal 2013.
The pro forma financial information for the year ended January 31, 2013 combines the historical results of the Company for fiscal 2013 and the historical results of ExactTarget for the year ended December 31, 2012. The pro forma financial information for the year ended January 31, 2014 combines the historical results of the Company for fiscal 2014, which include the results of ExactTarget from the date of acquisition, and the historical results of ExactTarget for the six month period ended June 30, 2013.
EdgeSpring
On June 12, 2013, the Company acquired for cash and the Company’s common stock the outstanding stock of EdgeSpring, Inc. (“EdgeSpring”), a provider of an end-to-end business intelligence exploration platform used to build analytic applications. The Company acquired EdgeSpring to, among other things, expand its analytical capabilities and offerings. The Company has included the financial results of EdgeSpring in the consolidated financial statements from the date of acquisition, which have not been material to date. The acquisition date fair value of the consideration transferred for EdgeSpring was approximately $133.7 million, which consisted of the following (in thousands, except share data):


		Fair Value
Cash		$	62,580
Common stock (1,850,258 shares)			69,533
Fair value of stock options and restricted stock awards assumed			1,609

Total		$	133,722

The fair value of the stock options assumed by the Company was determined using the Black-Scholes option pricing model. The share conversion ratio of 0.17 was applied to convert EdgeSpring’s outstanding equity awards for EdgeSpring’s common stock into equity awards for shares of the Company’s common stock.

The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


		Fair Value
Current and noncurrent tangible assets		$	4,462
Intangible assets			32,300
Goodwill			107,165
Current and noncurrent liabilities			(666	)
Deferred tax liability			(9,539	)

Net assets acquired		$	133,722

The excess of purchase consideration over the fair value of net tangible and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible assets acquired, liabilities assumed and identifiable intangible assets are based on management’s estimates and assumptions. The estimated fair values of current and noncurrent income taxes payable and deferred taxes may be subject to change as additional information is received and certain tax returns are finalized. Thus the provisional measurements of fair value set forth above are subject to change. The Company expects to finalize the valuation as soon as practicable, but not later than one-year from the acquisition date.
The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair Value				Useful Life
Developed technology		$	31,030				5-6 years
Customer relationships			560				5 years
Trade name and trademark			710				5 years

Total intangible assets subject to amortization		$	32,300

Developed technology represents the estimated fair value of EdgeSpring’s end-to-end business intelligence exploration technology. Customer relationships represent the fair values of the underlying relationships with EdgeSpring customers. The goodwill balance is primarily attributed to the assembled workforce and expanded market opportunities when integrating EdgeSpring’s business intelligence technology with the Company’s other offerings. The goodwill balance is not deductible for U.S. income tax purposes.
The Company assumed unvested equity awards for shares of EdgeSpring’s common stock with a fair value of $4.7 million. Of the total consideration, $1.6 million was allocated to the purchase consideration and $3.1 million was allocated to future services and will be expensed over the remaining service periods on a straight-line basis.
Other Fiscal 2014 Business Combinations
During fiscal 2014, the Company acquired three other companies for an aggregate of $31.7 million in cash, net of cash acquired, and has included the financial results of these companies in its consolidated financial statements from the date of each respective acquisition. The Company accounted for these transactions as business combinations. In allocating the purchase consideration based on estimated fair values, the Company recorded $14.6 million of acquired intangible assets with useful lives of three to five years, $20.6 million of goodwill, $2.8 million of net tangible assets, including cash acquired, and $4.4 million of deferred tax liabilities. Some of this goodwill balance is deductible for U.S. income tax purposes. The three aforementioned business combinations and EdgeSpring were not included in the pro forma combined historical results of operations of the Company as they are not material.

Fiscal Year 2013
Rypple
On February 1, 2012, the Company acquired for cash the outstanding stock of 2Catalyze, Inc., (“Rypple”), a provider of social performance management applications. The Company acquired Rypple to, among other things, enable customers to engage and align their employees and teams with a social performance management solution, extending the employee social network to reach every employee. The Company has included the financial results of Rypple in the consolidated financial statements from the date of acquisition, which have not been material to date. The acquisition date fair value of the consideration transferred for Rypple was approximately $50.6 million, which consisted of the following (in thousands):


Cash		$	50,166
Fair value of stock options assumed			470

Total		$	50,636

The fair value of the stock options assumed by the Company was determined using the Black-Scholes option pricing model. The share conversion ratio of 0.044 was applied to convert Rypple options to the Company’s options.
The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


Net tangible assets		$	758
Deferred tax liability			(1,671	)
Intangible assets			5,970
Goodwill			45,579

Net assets acquired		$	50,636

The excess of purchase consideration over the fair value of net tangible and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible and identifiable intangible assets acquired and liabilities assumed were based on management’s estimates and assumptions. During fiscal 2014, the Company finalized its assessment of fair value of the assets and liabilities assumed at acquisition date. The adjustments made were not material and are not reflected above.
The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair value				Useful Life
Developed technology		$	4,970				3 years
Customer relationships			1,000				1 year

Total intangible assets subject to amortization		$	5,970

Developed technology represents the fair value of Rypple’s social performance management technology. Customer relationships represent the fair values of the underlying relationships and agreements with Rypple customers. The goodwill balance is primarily attributed to the assembled workforce and expanded market opportunities when integrating Rypple’s social performance management technology with the Company’s other offerings. The goodwill balance is deductible for U.S. income tax purposes.
The Company assumed unvested options with a fair value of $2.2 million. Of the total consideration, $0.5 million was allocated to the purchase consideration and $1.7 million was allocated to future services that are expensed over the remaining service periods on a straight-line basis.

Buddy Media, Inc.
On August 13, 2012, the Company acquired the outstanding stock of Buddy Media, Inc. (“Buddy”), a social media marketing platform. The Company acquired Buddy for the assembled workforce, expected synergies and expanded market opportunities when integrating Buddy’s social media marketing platform with the Company’s current offerings. The acquisition date fair value of the consideration transferred for Buddy was $735.8 million, which consisted of the following (in thousands, except share data):


Cash		$	497,500
Common stock (5,571,096)			202,161
Fair value of stock options and restricted stock awards assumed			36,092

Total		$	735,753

The value of the share consideration for the Company’s common stock was based on the closing price of $36.29 on the day of the acquisition. The fair value of the stock options and restricted stock awards assumed by the Company was determined using the Black-Scholes option pricing model. The share conversion ratio of 0.584 was applied to convert Buddy’s options and restricted stock awards to the Company’s options and restricted stock awards.
The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):



Current assets		$	35,609
Other noncurrent assets			3,424
Current and noncurrent liabilities			(16,437	)
Deferred revenue			(3,281	)
Deferred tax liability			(2,436	)
Intangible assets			78,340
Goodwill			640,534

Net assets acquired		$	735,753

The excess of purchase consideration over the fair value of net tangible and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible and identifiable intangible assets acquired and liabilities assumed are based on management’s estimates and assumptions. During fiscal 2014, the Company finalized its assessment of fair value of the assets and liabilities assumed at acquisition date. The adjustments made were not material and are not reflected above.
The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair value				Useful Life
Developed technology		$	65,210				5 years
Customer relationships			11,030				5 years
Trade name and trademark			2,100				5 years

Total intangible assets subject to amortization		$	78,340

Developed technology represents the fair value of Buddy’s social media marketing platform. Customer relationships represent the fair values of the underlying relationships and agreements with Buddy customers. The trade name and trademark represents the fair value of the brand and name recognition associated with the marketing of Buddy’s service offerings. The goodwill balance is primarily attributed to the assembled workforce and expanded market opportunities when integrating Buddy’s social media marketing platform with the Company’s other social media marketing offerings. The goodwill balance is not deductible for U.S. income tax purposes.
The Company assumed unvested options and restricted stock awards with a fair value of $67.4 million. Of the total consideration, $36.1 million was allocated to the purchase consideration and $31.3 million was allocated to future services that are expensed over the remaining service periods on a straight-line basis.
GoInstant, Inc.
On September 4, 2012, the Company acquired for cash the outstanding stock of GoInstant, Inc. (“GoInstant”) a provider of co-browsing technology that allows two or more people to collaboratively browse the same website together. The Company acquired GoInstant to, among other things, deliver its customers an easy to use co-browse experience. The Company has included the financial results of GoInstant in the consolidated financial statements from the date of acquisition, which have not been material to date. The acquisition date fair value of the consideration transferred for GoInstant was approximately $50.6 million, which consisted of the following (in thousands):


Cash		$	49,221
Fair value of stock options assumed			1,336

Total		$	50,557

The fair value of the stock options assumed by the Company was determined using the Black-Scholes option pricing model. The share conversion ratio of 0.344 was applied to convert GoInstant’s options to the Company’s options.
The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


Net tangible assets		$	473
Deferred tax liability			(1,771	)
Developed technology			6,560
Goodwill			45,295

Net assets acquired		$	50,557

The excess of purchase consideration over the fair value of net tangible and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible and identifiable intangible assets acquired and liabilities assumed were based on management’s estimates and assumptions. During fiscal 2014, the Company finalized its assessment of fair value of the assets and liabilities assumed at acquisition date. The adjustments made were not material and are not reflected above.
The developed technology represents the fair value of GoInstant’s co-browsing technology and has an estimated useful life of three years. The goodwill balance is primarily attributed to the assembled workforce and expanded market opportunities when integrating GoInstant’s co-browsing technology with the Company’s other offerings. The goodwill balance is deductible for U.S. income tax purposes.
The Company assumed unvested options with a fair value of $6.2 million. Of the total consideration, $1.3 million was allocated to the purchase consideration and $4.9 million was allocated to future services that are expensed over the remaining service periods on a straight-line basis.

Other Fiscal 2013 Business Combinations
During fiscal 2013, the Company acquired five additional companies for $15.1 million in cash, net of cash acquired, and has included the financial results of these companies in its consolidated financial statements from the date of each respective acquisition. The Company accounted for these transactions as business combinations. In allocating the purchase consideration based on fair values, the Company recorded $4.1 million of acquired intangible assets with useful lives of one to three years, $12.4 million of goodwill, $0.3 million of net tangible liabilities and $1.0 million of deferred tax liabilities. Some of this goodwill balance is 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, 2012		$	785,381
Rypple			45,579
Buddy Media			640,534
GoInstant			45,295
Other acquisitions			12,410
Finalization of acquisition date fair values			179

Balance as of January 31, 2013		$	1,529,378
EdgeSpring			107,165
ExactTarget			1,848,653
Other acquisitions			20,646
Finalization of acquisition date fair values			(5,019	)

Balance as of January 31, 2014		$	3,500,823

There was no impairment of goodwill during fiscal 2014, 2013 or 2012.
Intangible Assets
Intangible assets acquired resulting from business combinations are as follows as of January 31, 2014 (in thousands):


		Gross				Accumulated				Net Book		Weighted
		Fair Value				Amortization				Value		Average
												Remaining
												Useful Life
Acquired developed technology		$	659,770			$	(281,766	)		$	378,004		4.9
Customer relationships			409,135				(53,669	)			355,466		7
Trade name and trademark			38,930				(8,721	)			30,209		9
Territory rights and other			11,125				(3,963	)			7,162		3.8

Total		$	1,118,960			$	(348,119	)		$	770,841		6


Intangible assets acquired resulting from business combinations were as follows as of January 31, 2013 (in thousands):


		Gross				Accumulated				Net Book		Weighted
		Fair Value				Amortization				Value		Average
												Remaining
												Useful Life
Acquired developed technology		$	310,582			$	(172,823	)		$	137,759		2.7
Customer relationships			42,775				(21,599	)			21,176		3.8
Trade name and trademark			8,820				(4,930	)			3,890		2.8
Territory rights			3,203				(2,261	)			942		2.4

		$	365,380			$	(201,613	)		$	163,767		2.9

The expected future amortization expense for purchased intangible assets as of January 31, 2014 is as follows (in thousands):


Fiscal Period:
Fiscal 2015		$	148,889
Fiscal 2016			133,742
Fiscal 2017			126,056
Fiscal 2018			115,061
Fiscal 2019			101,453
Thereafter			145,640

Total amortization expense		$	770,841

Convertible_Senior_Notes_and_T

Convertible Senior Notes and Term Loan	12 Months Ended
Convertible Senior Notes and Term Loan	Jan. 31, 2014
Debt Disclosure [Abstract]	'
Convertible Senior Notes and Term Loan	'
	5. Convertible Senior Notes and Term Loan
	Convertible Senior Notes


	(In thousands)		Par Value				Equity				Liability Component of Par
							Component				Value as of January 31,
							Recorded
							at Issuance				2014			2013
	0.75% Convertible Senior Notes due January 15, 2015		$	568,864			$	125,530	(1)		$	542,159		$	521,278
	0.25% Convertible Senior Notes due April 1, 2018			1,150,000				122,421	(2)			1,046,930			0

	-1	This amount represents the equity component recorded at the initial issuance of the 0.75% convertible senior notes. As of January 31, 2014, $26.7 million was reclassified as temporary equity on the consolidated balance sheet as these notes are convertible.
	-2	This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes.
	In January 2010, the Company issued at par value $575.0 million of 0.75% convertible senior notes (the “0.75% Senior Notes”) due January 15, 2015, unless earlier purchased by the Company or converted. Interest is payable semi-annually in arrears on January 15 and July 15 of each year. In March 2013, the Company issued at par value $1.15 billion of 0.25% convertible senior notes (the “0.25% Senior Notes”, and together with the 0.75% Senior Notes, 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 commencing October 1, 2013.
	The Notes are governed by indentures between the Company, as issuer, and U.S. Bank National Association, as trustee. The 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 will receive cash equal to the principal amount of the Notes, and at the Company’s election, cash and/or shares of the Company’s common stock for any amounts in excess of the principal amounts.


			Conversion				Initial				Convertible Date
			Rate per $1,000				Conversion
			Par Value				Price per
							Share
	0.75% Senior Notes			46.8588			$	21.34				October 15, 2014
	0.25% Senior Notes			15.0512			$	66.44				1-Jan-18
	Throughout the term of the Notes, the conversion rate may be adjusted upon the occurrence of certain events, including any cash dividends. Holders of the 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 cancelled, extinguished or forfeited. Holders may convert their 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 share of common stock on such last trading day;

		•		in certain situations, when the trading price of the 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 Notes Indenture, such as a consolidation, merger or binding share exchange; or

		•		at any time on or after the convertible dates noted above.
	Holders of the 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 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 Notes in connection with such change of control.
	In accounting for the issuance of the Notes, the Company separated the 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 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 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 Note 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 term of the Notes, and transaction costs attributable to the equity component were netted with the equity component in temporary stockholders’ equity and stockholders’ equity. Additionally, the Company recorded a deferred tax liability of $51.1 million in connection with the 0.75% Senior Notes.

	The Notes consisted of the following (in thousands):


			As of January 31,
			2014				2013
	Liability component :
	Principal:
	0.75% Senior Notes (1)		$	568,864			$	574,890
	0.25% Senior Notes (1)			1,150,000				0
	Less: debt discount, net
	0.75% Senior Notes (2)			(26,705	)			(53,612	)
	0.25% Senior Notes (3)			(103,070	)			0

	Net carrying amount		$	1,589,089			$	521,278


	-1	The effective interest rates of the 0.75% Senior Notes and 0.25% Senior Notes are 5.86% and 2.53%, respectively. These interest rates were based on the interest rates of a similar liability at the time of issuance that did not have an associated convertible feature.
	-2	Included in the consolidated balance sheets within Convertible 0.75% Senior Notes (which is classified as a current liability, as these notes were convertible) and is amortized over the life of the 0.75% Senior Notes using the effective interest rate method.
	-3	Included in the consolidated balance sheets within Convertible 0.25% Senior Notes (which is classified as a noncurrent liability) and is amortized over the life of the 0.25% Senior Notes using the effective interest rate method.
	The total estimated fair values of the Company’s 0.75% Senior Notes and 0.25% Senior Notes at January 31, 2014 were $1.6 billion and $1.3 billion, respectively. The fair value was determined based on the closing trading price per $100 of the 0.75% Senior Notes and 0.25% Senior Notes as of the last day of trading for fiscal 2014.
	Based on the closing price of the Company’s common stock of $60.53 on January 31, 2014, the if-converted value of the 0.75% Senior Notes exceeded their principal amount by approximately $1.0 billion and the if-converted value of the 0.25% Senior Notes was less than their principal amount.
	Through the filing of this Form 10-K, the Company has received conversion notices on our 0.75% Senior Notes for approximately $280.0 million in aggregate principal balance that the Company will settle in fiscal 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 “Note Hedges”).


(in thousands, except for shares)		Date				Purchase				Shares
0.75% Note Hedges			January 2010			$	126,500				26,943,812
0.25% Note Hedges			March 2013			$	153,800				17,308,880
The Note Hedges cover shares of the Company’s common stock at a strike price that corresponds to the initial conversion price of the respective Notes, also subject to adjustment, and are exercisable upon conversion of the Notes. The Note Hedges will expire upon the maturity of the Notes. The Note Hedges are intended to reduce the potential economic dilution upon conversion of the Notes in the event that the market value per share of the Company’s common stock, as measured under the Notes, at the time of exercise is greater than the conversion price of the Notes. The Note Hedges are separate transactions and are not part of the terms of the Notes. Holders of the Notes will not have any rights with respect to the Note Hedges. The Company initially recorded a deferred tax asset of $51.4 million in connection with the 0.75% Note Hedges. The Note Hedges do not impact earnings per share.

Warrants


		Date				Proceeds				Shares			Strike
		Date				(in thousands)				Shares			Price
0.75% Warrants			January 2010			$	59,300				26,943,812		$	29.88
0.25% Warrants			March 2013			$	84,800				17,308,880		$	90.4
Separately, in January 2010 and March 2013, the Company also entered into warrant transactions (the “0.75% Warrants” and the “0.25% Warrants”, respectively) (collectively, the “Warrants”), whereby the Company sold warrants to acquire, subject to anti-dilution adjustments, shares of the Company’s common stock. As the average market value per share of the Company’s common stock for the reporting period, as measured under the 0.75% Warrants, exceeds the strike price of the 0.75% Warrants, the 0.75% Warrants would have a dilutive effect on the Company’s earnings/loss per share if the Company were to report net income for fiscal 2014. The Warrants were anti-dilutive for the periods presented. The Warrants are separate transactions, entered into by the Company and are not part of the terms of the Notes or Note Hedges. Holders of the Notes and Note Hedges will not have any rights with respect to the Warrants.
Term Loan
On July 11, 2013, the Company entered into a credit agreement (the “Credit Agreement”) with Bank of America, N.A. and certain other lenders. The Credit Agreement provides for a $300.0 million term loan (the “Term Loan”) maturing on July 11, 2016 (the “Maturity Date”) and bears interest at the Company’s option at either a base rate plus a spread of 0.50% to 1.00% or an adjusted LIBOR rate as defined in the Credit Agreement plus a spread of 1.50% to 2.00%.
The Company entered into the Term Loan in conjunction with and for purposes of funding the acquisition of ExactTarget.
Interest is due and payable in arrears quarterly for the loan bearing interest at the base rate and at the end of an interest period in the case of the loan bearing interest at the adjusted LIBOR rate. The Term Loan is payable in quarterly installments equal to $7.5 million beginning on September 30, 2013, with the remaining outstanding principal amount of the term loan being due and payable on the Maturity Date. The Company may prepay the Term Loan, in whole or in part at any time during the term of the Term Loan. Amounts repaid or prepaid may not be reborrowed under the terms of the Credit Agreement. The Term Loan is secured by a pledge of 100 percent of the equity securities of the Company’s direct domestic subsidiaries and 65 percent of the equity securities of the Company’s foreign subsidiaries.
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, issue preferred stock or pay dividends, 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 January 31, 2014.
The weighted average interest rate on the Term Loan was 2.0% for fiscal 2014. As of January 31, 2014, the current portion outstanding under the Term Loan was $30.0 million and the noncurrent outstanding portion was $255.0 million. Future principal payments on the Term Loan are payable as follows: $30.0 million during fiscal 2015; $30.0 million during fiscal 2016; and $235.0 million during fiscal 2017.

Interest Expense
The following table sets forth total interest expense recognized related to the Notes and the Term Loan prior to capitalization of interest (in thousands):


		Fiscal Year Ended January 31,
		2014				2013				2012
Contractual interest expense		$	10,195			$	4,313			$	4,312
Amortization of debt issuance costs			4,470				1,324				1,324
Amortization of debt discount			46,942				25,131				23,720

		$	61,607			$	30,768			$	29,356

Other_Balance_Sheet_Accounts

Other Balance Sheet Accounts	12 Months Ended
Other Balance Sheet Accounts	Jan. 31, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Other Balance Sheet Accounts	'
	6. Other Balance Sheet Accounts
	Prepaid Expenses and Other Current Assets
	Prepaid expenses and other current assets consisted of the following (in thousands):


			As of January 31,
			2014			2013
	Deferred income taxes, net		$	49,279		$	7,321
	Prepaid income taxes			23,571			21,180
	Customer contract asset			77,368			0
	Prepaid expenses and other current assets			158,962			104,813

			$	309,180		$	133,314

	Customer contract asset reflects future billings of amounts that are contractually committed by ExactTarget’s existing customers as of the acquisition date that will be billed in the next twelve 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 January 31,
			2014			2013
	Capitalized internal-use software development costs, net of accumulated amortization of $101,687 and $72,448, respectively		$	72,915		$	59,647
	Acquired developed technology, net of accumulated amortization of $294,628 and $179,906, respectively			409,002			147,676

			$	481,917		$	207,323

	Capitalized internal-use software amortization expense totaled $29.2 million, $22.1 million and $15.8 million for fiscal 2014, 2013 and 2012, respectively. Acquired developed technology amortization expense totaled $114.7 million, $80.0 million and $62.1 million for fiscal 2014, 2013 and 2012, respectively.
	The Company capitalized $3.5 million, $3.4 million and $2.4 million of stock-based expenses related to capitalized internal-use software development and deferred professional services during fiscal 2014, 2013 and 2012, respectively.

	Other Assets, net
	Other assets consisted of the following (in thousands):


			As of January 31,
			2014			2013
	Deferred income taxes, noncurrent, net		$	9,691		$	19,212
	Long-term deposits			17,970			13,422
	Purchased intangible assets, net of accumulated amortization of $66,399 and $28,790, respectively			416,119			49,354
	Acquired intellectual property, net of accumulated amortization of $11,304 and $7,074, respectively			11,957			13,872
	Strategic investments			92,489			51,685
	Customer contract asset			18,182			0
	Other			47,082			21,415

			$	613,490		$	168,960

	Customer contract asset reflects the noncurrent portion of future billings that are contractually committed by ExactTarget’s existing customers as of the acquisition date.
	Purchased intangible assets amortization expense for fiscal 2014, 2013 and 2012 was $37.6 million, $10.9 million and $8.0 million, respectively. Acquired intellectual property amortization expense for fiscal 2014, 2013 and 2012 was $4.2 million, $3.9 million and $2.4 million, respectively.
	Accounts Payable, Accrued Expenses and Other Liabilities
	Accounts payable, accrued expenses and other liabilities consisted of the following (in thousands):


			As of January 31,
			2014			2013
	Accounts payable		$	64,988		$	14,535
	Accrued compensation			397,002			311,595
	Accrued other liabilities			235,543			138,165
	Accrued income and other taxes payable			153,026			120,341
	Accrued professional costs			15,864			10,064
	Customer liability, current			53,957			0
	Accrued rent			13,944			3,006

			$	934,324		$	597,706

Customer liability reflects the legal obligation to provide future services that are contractually committed by ExactTarget’s existing customers but unbilled as of the acquisition date. As these services are invoiced, this balance will reduce and deferred revenue will increase.

Other Noncurrent Liabilities
Other noncurrent liabilities consisted of the following (in thousands):


		As of January 31,
		2014			2013
Deferred income taxes and income taxes payable		$	108,760		$	49,074
Customer liability, noncurrent			13,953			0
Financing obligation, building in progress—leased facility			40,171			0
Long-term lease liabilities and other			594,303			126,658

		$	757,187		$	175,732

Customer liability, noncurrent reflects the noncurrent fair value of the legal obligation to provide future services that are contractually committed by ExactTarget’s existing customers but unbilled as of the acquisition date.
In June 2013, the Company entered into a large capital lease agreement for software for a period of nine years, which consists of the contractual term of six years and a renewal option of three years.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Jan. 31, 2014
Equity [Abstract]	'
Stockholders' Equity	'
	7. Stockholders’ Equity
	The Company maintains the following stock plans: the 2006 Inducement Equity Incentive Plan (the “Inducement Plan”), 2004 Employee Stock Purchase Plan and the 2013 Equity Incentive 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.
	On February 1, 2013, 14.0 million additional shares were reserved under the 2004 Equity Incentive Plan and 4.0 million additional shares were reserved under the ESPP pursuant to the automatic increase in each respective plan.
	On June 6, 2013, the Company’s stockholders approved the 2013 Equity Incentive Plan (the “2013 Plan”) with a reserve of 48.0 million shares of common stock for future issuance. In addition, 21.9 million shares of common stock that were previously available for grant under the 2004 Equity Incentive Plan and the 2004 Outside Directors Stock Plan (collectively, the “Prior Plans”) as of June 6, 2013, expired and were added to the 2013 Plan share reserve. Any shares of common stock subject to outstanding awards under the Prior Plans that expire, are forfeited, or repurchased by the Company also will be available for future grant under the 2013 Plan.
	In September 2011, the Company’s Board of Directors amended and restated the ESPP. In conjunction with the amendment of the ESPP, the Company’s Board of Directors determined that the offerings under the ESPP would commence, beginning with a twelve month offering period starting in December 2011. As of January 31, 2014, $23.9 million has been withheld on behalf of employees for future purchases under the plan and is recorded in accrued expenses and other liabilities. Employees purchased 2.9 million shares for $92.5 million and 3.0 million shares for $69.1 million, in fiscal 2014 and 2013, respectively, under the ESPP.
	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 3, 2013, options issued had a term of 5 years. After July 3, 2013, options issued have a term of 7 years.

	Stock activity excluding the ESPP is as follows:


						Options Outstanding
		Shares				Outstanding				Weighted-		Aggregate
		Available				Stock				Average		Intrinsic Value
		for Grant				Options				Exercise Price		(in thousands)
	Balance as of January 31, 2013		11,759,740				29,983,292			$	26.6
	Increase in shares authorized:
	2004 Equity Incentive Plan		14,000,000				0				0
	2013 Equity Incentive Plan		76,443,240				0				0
	2010 EdgeSpring Plan		124,859				0				0
	2004 ExactTarget Plan		136,986				0				0
	2008 ExactTarget Plan		3,202,185				0				0
	Options granted under all plans		(10,866,107	)			10,866,107				41.08
	Restricted stock activity		(14,792,960	)
	Stock grants to board and advisory board members		(210,320	)
	Exercised		0				(9,932,832	)			19.25
	1999 Plan shares expired		(26,257,609	)			0				0
	Cancelled		2,312,522				(2,312,522	)			31.37

	Balance as of January 31, 2014		55,852,536				28,604,045			$	34.26	$	751,314

	Vested or expected to vest						27,258,499			$	33.81	$	728,393

	Exercisable as of January 31, 2014						10,921,637			$	26.45	$	372,249

	The total intrinsic value of the options exercised during fiscal 2014, 2013 and 2012 was $292.3 million, $506.9 million and $224.9 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 3.8 years.
	As of January 31, 2014, options to purchase 10,921,637 shares were vested at a weighted average exercise price of $26.45 per share and had a remaining weighted-average contractual life of approximately 2.3 years. The total intrinsic value of these vested options as of January 31, 2014 was $372.2 million.
	The following table summarizes information about stock options outstanding as of January 31, 2014:


		Options Outstanding										Options Exercisable
	Range of Exercise	Number				Weighted-Average				Weighted-Average		Number of		Weighted-Average
	Prices	Outstanding				Remaining				Exercise Price		Shares		Exercise Price
						Contractual Life
						(Years)
	$0.26 to $17.06		4,142,029				2.3			$	10.93		3,400,198	$	11.56
	$17.83 to $27.06		4,952,072				3.9				25.61		2,022,376		25.97
	$27.56 to $35.07		2,016,954				3.7				31.54		754,568		31.94
	$35.63		4,424,751				1.8				35.63		3,129,209		35.63
	$35.87 to $39.09		6,261,008				3.6				38.02		1,588,536		37.96
	$40.19 to $52.14		898,060				5.7				42.9		26,750		42.11
	$52.30 to $59.37		5,909,171				6.8				52.49		0		0

			28,604,045				3.9			$	34.26		10,921,637	$	26.45


	Restricted stock activity is as follows:


		Restricted Stock Outstanding
		Outstanding				Weighted-				Aggregate
						Average				Intrinsic
						Exercise Price				Value
						(in thousands)
Balance as of January 31, 2012			19,849,052			$	0.001
Granted		16,283,752				0.001
Cancelled		(2,471,624	)			0.001
Vested and converted to shares		(6,878,560	)			0.001

Balance as of January 31, 2013		26,782,620			$	0.001
Granted		10,884,991				0.001
Cancelled		(3,616,383	)			0.001
Vested and converted to shares		(9,397,650	)			0.001

Balance as of January 31, 2014		24,653,578			$	0.001			$	1,492,281

Expected to vest		21,442,620							$	1,297,922

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 vest over 4 years.
The weighted-average grant date fair value of the restricted stock issued for fiscal 2014, 2013 and 2012 was $46.99, $37.71 and $30.47, respectively.
Common Stock
The following number of shares of common stock were reserved and available for future issuance at January 31, 2014:


Options outstanding		28,604,045
Restricted stock awards and units outstanding		24,653,578
Stock available for future grant:
2013 Equity Incentive Plan		55,626,162
2006 Inducement Equity Incentive Plan		226,374
2004 Employee Stock Purchase Plan		6,114,165
Convertible senior notes		43,965,164
Warrants		44,252,692

		203,442,180

During fiscal years 2014, 2013 and 2012, certain board members received stock grants totaling 108,800 shares of common stock, 102,400 shares of common stock and 147,200 shares of common stock, respectively for board services pursuant to the terms described in the 2013 Plan and previously, the 2004 Outside Directors Stock Plan. The expense related to these awards, which was expensed immediately at the time of the issuance, totaled $4.5 million, $3.8 million and $4.9 million for fiscal 2014, 2013 and 2012, respectively.
Preferred Stock
The Company’s board of directors has the authority, without further action by stockholders, to issue up to 5,000,000 shares of preferred stock in one or more series. The Company’s board of directors may designate the rights, preferences, privileges and restrictions of the preferred stock, including dividend rights, conversion rights, voting rights, terms of redemption, liquidation preference, sinking fund terms, and number of shares constituting any series or the designation of any series. The issuance of preferred stock could have the effect of restricting dividends on the Company’s common stock, diluting the voting power of its common stock, impairing the liquidation rights of its common stock, or delaying or preventing a change in control. The ability to issue preferred stock could delay or impede a change in control. As of January 31, 2014 and 2013, no shares of preferred stock were outstanding.

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Jan. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	8. Income Taxes
	Effective Tax Rate
	The domestic and foreign components of loss before provision for (benefit from) income taxes consisted of the following (in thousands):


			Fiscal Year Ended January 31,
			2014				2013				2012
	Domestic		$	(326,392	)		$	(90,743	)		$	(27,303	)
	Foreign			(31,543	)			(37,051	)			(6,014	)

			$	(357,935	)		$	(127,794	)		$	(33,317	)

	The provision for (benefit from) income taxes consisted of the following (in thousands):


			Fiscal Year Ended January 31,
			2014				2013				2012
	Current:
	Federal		$	(10,431	)		$	12,896			$	9,344
	State			(245	)			3,021				4,346
	Foreign			39,784				30,261				15,709

	Total			29,108				46,178				29,399
	Deferred:
	Federal			(128,798	)			72,656				(36,601	)
	State			(22,012	)			28,538				(10,603	)
	Foreign			(4,058	)			(4,721	)			(3,940	)

	Total			(154,868	)			96,473				(51,144	)

	Provision for (benefit from) for income taxes		$	(125,760	)		$	142,651			$	(21,745	)

	During fiscal 2013, the Company established a valuation allowance for a significant portion of its deferred tax assets and recognized a tax expense of $186.8 million. During fiscal 2014, the Company recorded a partial release of its valuation allowance primarily in connection with the acquisition of ExactTarget. Due to the ExactTarget acquisition, a deferred tax liability was recorded for the book-tax basis difference related to purchased intangibles. The net deferred tax liability from acquisitions provided an additional source of income to support the realizability of the Company’s pre-existing deferred tax assets and as a result, the Company released a portion of its valuation allowance and recorded a tax benefit of $143.1 million for fiscal 2014.
	During fiscal 2014, 2013 and 2012, the Company recorded net tax benefits that resulted from allocating certain tax effects related to exercises of stock options and vesting of restricted stocks directly to stockholders’ equity in the amount of $8.0 million, $7.2 million and $1.6 million, respectively.

	A reconciliation of income taxes at the statutory federal income tax rate to the provision for (benefit from) income taxes included in the accompanying consolidated statements of operations is as follows (in thousands):


			Fiscal Year Ended January 31,
			2014				2013				2012
	U.S. federal taxes at statutory rate		$	(125,277	)		$	(44,729	)		$	(11,661	)
	State, net of the federal benefit			(10,780	)			(969	)			(6	)
	Foreign taxes in excess of the U.S. statutory rate			33,412				16,931				10,555
	Change in valuation allowance			(25,048	)			186,806				0
	Tax credits			(22,293	)			(17,670	)			(15,049	)
	Non-deductible expenses			21,407				4,807				5,345
	Tax expense/(benefit) from acquisitions			1,811				(3,568	)			(12,575	)
	Other, net			1,008				1,043				1,646

			$	(125,760	)		$	142,651			$	(21,745	)

	The Company receives certain tax incentives in Switzerland and Singapore in the form of reduced tax rates. These temporary tax reduction programs will both expire in fiscal 2016.
	Deferred Income Taxes
	Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets and liabilities were as follows (in thousands):


			As of January 31,
			2014				2013
	Deferred tax assets:
	Net operating loss carryforwards		$	259,465			$	62,603
	Deferred stock compensation			82,840				69,593
	Tax credits			107,381				75,812
	Deferred rent expense			47,063				28,022
Accrued liabilities			79,235				63,257
Deferred revenue			8,522				30,441
Basis difference on investment			11,999				8,569
Financing obligation			63,673				0
Other			17,762				9,916

Total deferred tax assets			677,940				348,213
Less valuation allowance			(180,223	)			(192,682	)

Deferred tax assets, net of valuation allowance			497,717				155,531
Deferred tax liabilities:
Deferred commissions			(87,625	)			(72,470	)
Purchased intangibles			(259,409	)			(14,739	)
Unrealized gains on investments			(5,232	)			(2,768	)
Depreciation and amortization			(144,752	)			(41,832	)
Other			(3,599	)			(7,351	)

Total deferred tax liabilities			(500,617	)			(139,160	)

Net deferred tax assets		$	(2,900	)		$	16,371

At January 31, 2014, the Company had net operating loss carryforwards for federal income tax purposes of approximately $1.8 billion, which expire in fiscal 2021 through fiscal 2034, federal research and development tax credits of approximately $72.8 million, which expire in fiscal 2020 through fiscal 2034, foreign tax credits of approximately $15.4 million, which expires in fiscal 2019 through fiscal 2024, and minimum tax credits of $0.7 million, which have no expiration date. The Company also had net operating loss carryforwards for California of approximately $794.6 million which expire beginning in fiscal 2015 through fiscal 2034 and state research and development tax credits of approximately $68.1 million, which do not expire, and $9.5 million of state enterprise zone tax credits, which expires in fiscal 2024. Company also had other states net operating loss carryforwards of approximately $600.0 million which expire beginning in fiscal 2015 through fiscal 2034. Utilization of the Company’s net operating loss carryforwards may be subject to substantial annual limitation due to the ownership change limitations provided by the Internal Revenue Code and similar state provisions. Such an annual limitation could result in the expiration of the net operating loss and tax credit carryforwards before utilization.
The Company regularly assesses the need for a valuation allowance against its deferred tax assets by considering both positive and negative evidence related to the likelihood of the realization of its deferred taxes to determine if it is more-likely-than-not that some or all of its deferred tax assets will be realized. In evaluating the need for a valuation allowance, the Company considers its cumulative loss in recent years as a significant piece of negative evidence. During fiscal 2014, the valuation allowance decreased by $12.5 million. The net reduction was primarily due to the partial release of the valuation allowance in connection with the acquisition of ExactTarget offset with the increase in the valuation allowance due to current year operating losses. The Company will continue to assess the realizability of the deferred tax assets in each of the applicable jurisdictions going forward and adjust the valuation allowance accordingly.
The excess tax benefits associated with stock option exercises are recorded directly to stockholders’ equity only when the tax deduction is realized on the income tax returns. As a result, the excess tax benefits included in net operating loss carryforwards but are not reflected in deferred tax assets for fiscal 2014 and 2013 are $408.8 million and $316.2 million, respectively.
Tax Benefits Related to Stock-Based Compensation
The total income tax benefit related to stock-based awards was $147.8 million $113.9 million and $76.0 million for fiscal 2014, 2013 and 2012, respectively, the majority of which was not recognized as a result of the valuation allowance since fiscal 2013.
Unrecognized Tax Benefits and Other Considerations
Tax positions for the Company and its subsidiaries are subject to income tax audits by many 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, based on the 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 had gross unrecognized tax benefits of $102.3 million, $75.1 million and $52.0 million as of January 31, 2014, 2013 and 2012 respectively.
A reconciliation of the beginning and ending balance of total unrecognized tax benefits for fiscal years 2014, 2013, and 2012 is as follows (in thousands):


		Fiscal Year Ended January 31,
		2014				2013				2012
Balance as of February 1,		$	75,144			$	51,971			$	27,462
Tax positions taken in prior period:
Gross increases			8,420				7,304				10,008
Gross decreases			(4,466	)			(4,460	)			(23	)
Tax positions taken in current period:
Gross increases			27,952				24,401				15,965
Settlements			0				(121	)			0
Lapse of statute of limitations			(5,205	)			(4,159	)			(1,143	)
Currency translation effect			430				208				(298	)

Balance as of January 31,		$	102,275			$	75,144			$	51,971


For fiscal 2014, 2013 and 2012 total unrecognized tax benefits in an amount of $34.9 million, $32.3 million, and $39.1 million respectively, if recognized, would reduce income tax expense and the Company’s effective tax rate after considering the impact of the change in valuation allowance in the U.S. since fiscal 2013.
The Company recognizes accrued interest and penalties related to unrecognized tax benefits in the income tax provision. The Company accrued penalties and interest in the amount of $0.6 million, $0.3 million and $0.6 million in income tax expense during fiscal 2014, 2013 and 2012. The balance in the non-current income tax payable related to penalties and interest was $3.3 million, $1.7 million and $1.4 million as of January 31, 2014, 2013 and 2012 respectively.
The Company has operations and taxable presence in multiple jurisdictions in the U.S. and outside of the U.S. Tax positions for the Company and its subsidiaries are subject to income tax audits by multiple tax jurisdictions around the world. The Company currently considers U.S. federal and state, Canada, Japan, Germany, France and the United Kingdom to be major tax jurisdictions. The Company’s U.S. federal and state tax returns since February 1999, which was the inception of the Company, remain open to examination. With some exceptions, tax years prior to fiscal 2008 in jurisdictions outside of U.S. are generally closed. However, in Japan and United Kingdom, the Company is no longer subject to examinations for years prior to fiscal 2009 and fiscal 2011, respectively.
In fiscal 2014, the U.S. Internal Revenue Service and California Franchise Tax Board began its examinations for the Company’s tax returns for the periods covering fiscal 2011 to 2012 and fiscal 2009 to 2010 respectively. The Company also has examinations in other international jurisdictions, including Canada, Japan, Germany and the United Kingdom. The Company regularly evaluates its uncertain tax positions and the likelihood of outcomes from these tax examinations. Significant judgment and estimates are necessary in the determination of income tax reserves. Although it is often difficult to predict the outcomes of tax examinations, the Company believes that it has provided adequate reserves for its income tax uncertainties. In the next twelve months, the Company does not expect the unrecognized tax benefits balance to materially change due to the uncertainty with these on-going examinations.

EarningsLoss_Per_Share

Earnings/Loss Per Share	12 Months Ended
Earnings/Loss Per Share	Jan. 31, 2014
Earnings Per Share [Abstract]	'
Earnings/Loss Per Share	'
	9. 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 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 fiscal 2014, 2013 and 2012 are the same as basic loss per share as there is a net loss in these periods and inclusion of potentially issuable shares would be anti-dilutive.
	A reconciliation of the denominator used in the calculation of basic and diluted loss per share is as follows (in thousands):

		Fiscal Year Ended January 31,
		2014			2013			2012
	Numerator:
	Net loss	$	(232,175	)	$	(270,445	)	$	(11,572	)

	Denominator:
	Weighted-average shares outstanding for basic loss per share		597,613			564,896			541,208
	Effect of dilutive securities:
	Convertible senior notes		0			0			0
	Employee stock awards		0			0			0
	Warrants		0			0			0

	Adjusted weighted-average shares outstanding and assumed conversions for diluted loss per share		597,613			564,896			541,208

	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):


		Fiscal Year Ended January 31,
		2014			2013			2012
	Stock awards		19,664			30,068			30,240
	Convertible senior notes		43,965			26,940			26,940
	Warrants		44,253			26,944			26,944

Commitments

Commitments	12 Months Ended
Commitments	Jan. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments	'
	10. Commitments
	Letters of Credit
	As of January 31, 2014, the Company had a total of $55.4 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 January 31, 2014, the future minimum lease payments under non-cancelable operating and capital leases are as follows (in thousands):


			Capital			Operating		Financing
			Leases			Leases		Obligation,
								Building in
								Progress—Leased
								Facility(1)
	Fiscal Period:
	Fiscal 2015		$	77,455		$	196,514	$	0
	Fiscal 2016			72,193			189,757		1,777
	Fiscal 2017			73,845			160,521		16,877
	Fiscal 2018			83,369			129,733		21,107
	Fiscal 2019			99,643			119,027		21,551
	Thereafter			200,000			587,528		274,512

	Total minimum lease payments			606,505		$	1,383,080	$	335,824

	Less: amount representing interest			(88,260	)

	Present value of capital lease obligations		$	518,245


	-1	Total Financing Obligation, Building in Progress—Leased Facility noted above represents the total obligation on the lease agreement noted in Footnote 3, “Property and Equipment”, and includes $40.2 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 $1.4 billion, approximately $1.3 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.

	Rent expense for fiscal 2014, 2013 and 2012 was $123.6 million, $88.3 million and $70.3 million, respectively.

Employee_Benefit_Plan

Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Jan. 31, 2014
Postemployment Benefits [Abstract]	'
Employee Benefit Plan	'
	11. Employee Benefit Plan
	The Company has a 401(k) plan covering all eligible employees in the United States. Since January 1, 2006, the Company has been contributing to the plan. Total Company contributions during fiscal 2014, 2013 and 2012, were $27.9 million, $22.1 million and $15.7 million, respectively.

Legal_Proceedings_and_Claims

Legal Proceedings and Claims	12 Months Ended
Legal Proceedings and Claims	Jan. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Legal Proceedings and Claims	'
	12. Legal Proceedings and Claims
	In the ordinary course of business, the Company is 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, 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.
	In general, the resolution of a legal matter could prevent the Company from offering its service to others, could be material to the Company’s financial condition or cash flows, or both, or could otherwise adversely affect the Company’s operating results.
	The Company makes a provision for a liability relating to legal matters when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, estimated settlements, legal rulings, advice of legal counsel and other information and events pertaining to a particular matter. In management’s opinion, resolution of all current matters is not expected to have a material adverse impact on the Company’s consolidated results of operations, cash flows or financial position. However, depending on the nature and timing of any such dispute, an unfavorable resolution of a matter could materially affect the Company’s future results of operations or cash flows, or both, of a particular quarter.

RelatedParty_Transactions

Related-Party Transactions	12 Months Ended
Related-Party Transactions	Jan. 31, 2014
Related Party Transactions [Abstract]	'
Related-Party Transactions	'
	13. Related-Party Transactions
	In January 1999, the salesforce.com/foundation, also referred to as the Foundation, a non-profit public charity, was chartered to build philanthropic programs that are focused on youth and technology. The Company’s chairman is the chairman of the Foundation. The Company’s chairman, two of the Company’s employees and one of the Company’s board members hold four of the Foundation’s ten board seats. The Company does not control the Foundation’s activities, and accordingly, the Company does not consolidate the Foundation’s 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 $997,000 for fiscal 2014.
	Additionally, the Company has donated subscriptions to the Company’s service to other qualified non-profit organizations. The Company also allows an affiliate of the Foundation to resell the Company’s service to non-profit organizations. The Company does not charge the affiliate for these subscriptions, so any revenue from subscriptions provided to non-profit organizations is retained by the Foundation to fund its charitable work. The value of the subscriptions was approximately $15.1 million for fiscal 2014. The Company plans to continue these programs.

Subsequent_Events

Subsequent Events	12 Months Ended
Subsequent Events	Jan. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	14. Subsequent Events
	The Company evaluated subsequent events through the date this Annual Report on Form 10-K was filed with the SEC.

Selected_Quarterly_Financial_D

Selected Quarterly Financial Data	12 Months Ended
Selected Quarterly Financial Data	Jan. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Selected Quarterly Financial Data	'
	15. Selected Quarterly Financial Data (Unaudited)
	Selected summarized quarterly financial information for fiscal 2014 and 2013 is as follows:


			1st			2nd			3rd			4th			Fiscal Year
			Quarter			Quarter			Quarter			Quarter			Fiscal Year
			(in thousands, except per share data)
	Fiscal 2014
	Revenues		$	892,633		$	957,094		$	1,076,034		$	1,145,242		$	4,071,003
	Gross profit			683,639			739,377			807,847			871,712			3,102,575
	Loss from operations			(44,540	)		(39,857	)		(97,931	)		(103,746	)		(286,074	)
	Net income (loss)			(67,721	)		76,603			(124,434	)		(116,623	)		(232,175	)
	Basic net income (loss) per share		$	(0.12	)	$	0.13		$	(0.21	)	$	(0.19	)	$	(0.39	)
	Diluted net income (loss) per share		$	(0.12	)	$	0.12		$	(0.21	)	$	(0.19	)	$	(0.39	)

	Fiscal 2013
	Revenues		$	695,467		$	731,649		$	788,398		$	834,681		$	3,050,195
	Gross profit			543,916			569,231			602,150			651,319			2,366,616
	Loss from operations			(22,249	)		(13,466	)		(54,188	)		(20,807	)		(110,710	)
	Net loss			(19,475	)		(9,829	)		(220,297	)		(20,844	)		(270,445	)
	Basic net loss per share (1)		$	(0.04	)	$	(0.02	)	$	(0.39	)	$	(0.04	)	$	(0.48	)
	Diluted net loss per share (1)		$	(0.04	)	$	(0.02	)	$	(0.39	)	$	(0.04	)	$	(0.48	)

	-1	Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Schedule_II_Valuation_and_Qual

Schedule II Valuation and Qualifying Accounts	12 Months Ended
Schedule II Valuation and Qualifying Accounts	Jan. 31, 2014
Valuation And Qualifying Accounts [Abstract]	'
Schedule II Valuation and Qualifying Accounts	'
	Schedule II Valuation and Qualifying Accounts


	Description	Balance at		Additions		Deductions		Balance at
		Beginning of				Write-offs		End of Year
		Year
	Fiscal year ended January 31, 2014
	Allowance for doubtful accounts	$	1,853,000	$	7,963,000	$	5,047,000	$	4,769,000
	Fiscal year ended January 31, 2013
	Allowance for doubtful accounts	$	1,273,000	$	6,350,000	$	5,770,000	$	1,853,000
	Fiscal year ended January 31, 2012
	Allowance for doubtful accounts	$	1,711,000	$	4,174,000	$	4,612,000	$	1,273,000

Summary_of_Business_and_Signif1

Summary of Business and Significant Accounting Policies (Policies)

12 Months Ended

Jan. 31, 2014

Accounting Policies [Abstract]

Fiscal Year

The Company’s fiscal year ends on January 31. References to fiscal 2014, for example, refer to the fiscal year ending January 31, 2014.

Basis of Presentation

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the Company’s consolidated financial statements and notes thereto.

Significant estimates and assumptions made by management include the determination of:

•

the best estimate of selling price of the deliverables included in multiple-deliverable revenue arrangements,

•

the fair value of assets acquired and liabilities assumed for business combinations,

•

the recognition, measurement and valuation of current and deferred income taxes,

•

the recognition and measurement of loss contingencies,

•

the estimate of real estate sublease rental rates and market conditions,

•

the fair value of the 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 recoverability of long-lived assets (property and equipment, goodwill and identified intangibles).

Actual results could differ materially from those estimates.

Principles of Consolidation

Segments

Concentrations of Credit Risk and Significant Customers

Revenue Recognition

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

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

Multiple-Deliverable Arrangements

Deferred Revenue

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

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

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 lease term or 10 years

Building improvements

Amortized over the estimated useful lives of the respective assets when they are ready for their intended use

Capitalized Internal-Use Software Costs

Goodwill, Intangible Assets, Long-Lived Assets and Impairment Assessments

Business Combinations

Leases and Asset Retirement Obligations

Accounting for Stock-Based Compensation

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:

Fiscal Year Ended January 31,

Stock Options

2014

2013

2012

Volatility

37 - 43

43 - 51

47 - 51

Estimated life

3.4 years

3.7 years

Risk-free interest rate

0.48 - 1.21

0.43 - 0.77

0.68 - 1.77

Weighted-average fair value per share of grants

14.08

12.94

12.29

Fiscal Year Ended January 31,

ESPP

2014

2013

2012

Volatility

31 - 35

39 - 46

50 - 53

Estimated life

0.75 years

Risk-free interest rate

0.07 - 0.10

0.03 - 0.22

0.95 - 1.08

Weighted-average fair value per share of grants

10.3

11.39

8.59

Advertising Expenses

Advertising is expensed as incurred. Advertising expense was $155.8 million, $110.7 million and $80.3 million for fiscal 2014, 2013 and 2012, respectively.

Income Taxes

Foreign Currency Translation

Warranties and Indemnification

New Accounting Pronouncements

Summary_of_Business_and_Signif2

Summary of Business and Significant Accounting Policies (Tables)	12 Months Ended
	Jan. 31, 2014
Accounting Policies [Abstract]	'
Revenues By Geographical Region	'
	Revenues by geographical region are as follows (in thousands):


		Fiscal Year Ended January 31,
		2014			2013			2012
	Americas	$	2,899,837		$	2,123,736		$	1,540,289
	Europe		741,220			525,304			408,456
	Asia Pacific		429,946			401,155			317,794

		$	4,071,003		$	3,050,195		$	2,266,539

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 lease term or 10 years
	Building improvements	Amortized over the estimated useful lives of the respective assets when they are ready for their intended use
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:


		Fiscal Year Ended January 31,
	Stock Options	2014			2013			2012
	Volatility		37 - 43	%		43 - 51	%		47 - 51	%
	Estimated life		3.4 years			3.7 years			3.7 years
	Risk-free interest rate		0.48 - 1.21	%		0.43 - 0.77	%		0.68 - 1.77	%
	Weighted-average fair value per share of grants	$	14.08		$	12.94		$	12.29

		Fiscal Year Ended January 31,
	ESPP	2014			2013			2012
	Volatility		31 - 35	%		39 - 46	%		50 - 53	%
	Estimated life		0.75 years			0.75 years			0.75 years
	Risk-free interest rate		0.07 - 0.10	%		0.03 - 0.22	%		0.95 - 1.08	%
	Weighted-average fair value per share of grants	$	10.3		$	11.39			8.59

Investments_Tables

Investments (Tables)	12 Months Ended
Investments (Tables)	Jan. 31, 2014
Investments Schedule [Abstract]	'
Schedule Of Marketable Securities	'
	At January 31, 2014, marketable securities consisted of the following (in thousands):


	Investments classified as Marketable Securities		Amortized			Unrealized			Unrealized			Fair Value
	Investments classified as Marketable Securities		Cost			Gains			Losses			Fair Value
	Corporate notes and obligations		$	340,706		$	1,314		$	(170	)	$	341,850
	U.S. treasury securities			16,016			28			0			16,044
	Mortgage backed obligations			24,888			281			(93	)		25,076
	Asset backed securities			38,213			39			(35	)		38,217
	Municipal securities			2,000			1			(3	)		1,998
	Foreign government obligations			24,305			171			(2	)		24,474
	U.S. agency obligations			14,726			9			(10	)		14,725
	Covered bonds			76,282			717			(1	)		76,998

	Total marketable securities		$	537,136		$	2,560		$	(314	)	$	539,382

	At January 31, 2013, marketable securities consisted of the following (in thousands):


	Investments classified as Marketable Securities		Amortized			Unrealized			Unrealized			Fair Value
	Investments classified as Marketable Securities		Cost			Gains			Losses			Fair Value
	Corporate notes and obligations		$	685,695		$	5,113		$	(919	)	$	689,889
	U.S. treasury securities			38,864			20			(15	)		38,869
	Mortgage backed obligations			12,447			278			(2	)		12,723
	Municipal securities			2,697			1			(32	)		2,666
	Foreign government obligations			9,572			72			(3	)		9,641
	Collateralized mortgage obligations			150,794			1,775			(693	)		151,876
	U.S. agency obligations			105,224			157			(5	)		105,376

	Total marketable securities		$	1,005,293		$	7,416		$	(1,669	)	$	1,011,040

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 January 31,
			2014			2013
	Recorded as follows:
	Short-term (due in one year or less)		$	57,139		$	120,376
	Long-term (due after one year)			482,243			890,664

			$	539,382		$	1,011,040

Schedule Of Marketable Securities In An Unrealized Loss Position	'
	As of January 31, 2014, 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
			Fair Value			Losses			Fair Value			Losses			Fair Value		Losses
	Corporate notes and obligations		$	95,011		$	(168	)	$	1,324		$	(2	)	$	96,335	$	(170	)
	Mortgage backed obligations			7,212			(60	)		2,863			(33	)		10,075		(93	)
	Asset backed securities			10,345			(31	)		1,924			(4	)		12,269		(35	)
	Municipal securities			997			(3	)		0			0			997		(3	)
	Foreign government obligations			2,999			(1	)		6,498			(1	)		9,497		(2	)
	U.S. agency obligations			7,219			(10	)		0			0			7,219		(10	)
	Covered bonds			2,032			(1	)		0			0			2,032		(1	)

			$	125,815		$	(274	)	$	12,609		$	(40	)	$	138,424	$	(314	)

Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis	'
	The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2014 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			January 31,
			for Identical Assets			Inputs			Inputs			2014
			(Level 1)			(Level 2)			(Level 3)
	Cash equivalents (1):
	Time deposits		$	0		$	212,700		$	0		$	212,700
	Money market mutual funds			87,898			0			0			87,898
	Marketable securities:
	Corporate notes and obligations			0			341,850			0			341,850
	U.S. treasury securities			0			16,044			0			16,044
	Mortgage backed obligations			0			25,076			0			25,076
	Asset backed securities			0			38,217			0			38,217
	Municipal securities			0			1,998			0			1,998
	Foreign government obligations			0			24,474			0			24,474
	U.S. agency obligations			0			14,725			0			14,725
	Covered bonds			0			76,998			0			76,998
	Foreign currency derivative contracts (2)			0			1,598			0			1,598

	Total Assets		$	87,898		$	753,680		$	0		$	841,578
	Liabilities
	Foreign currency derivative contracts (3)		$	0		$	1,801		$	0		$	1,801

	Total Liabilities		$	0		$	1,801		$	0		$	1,801


	-1	Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of January 31, 2014, in addition to $481.0 million of cash.
	-2	Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of January 31, 2014.
	-3	Included in “accounts payable, accrued expenses and other liabilities” in the consolidated balance sheet as of January 31, 2014.

	The following table presents information about the Company’s assets and liabilities that are measured at fair value as of January 31, 2013 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			January 31,
			for Identical Assets			Inputs			Inputs			2013
			(Level 1)			(Level 2)			(Level 3)
	Cash equivalents (1):
	Time deposits		$	0		$	22,372		$	0		$	22,372
	Money market mutual funds			385,700			0			0			385,700
	Marketable securities:
	Corporate notes and obligations			0			689,889			0			689,889
	U.S. treasury securities			38,869			0			0			38,869
	Mortgage backed obligations			0			12,723			0			12,723
	Municipal securities			0			2,666			0			2,666
	Foreign government obligations			9,641			0			0			9,641
	Collateralized mortgage obligations			0			151,876			0			151,876
	U.S. agency obligations			0			105,376			0			105,376
	Foreign currency derivative contracts (2)			0			5,643			0			5,643

	Total Assets		$	434,210		$	990,545		$	0		$	1,424,755

	Liabilities
	Foreign currency derivative contracts (3)		$	0		$	3,307		$	0		$	3,307

	Total Liabilities		$	0		$	3,307		$	0		$	3,307


	-1	Included in “cash and cash equivalents” in the accompanying consolidated balance sheet as of January 31, 2013, in addition to $339.2 million of cash.
	-2	Included in “prepaid expenses and other current assets” in the accompanying consolidated balance sheet as of January 31, 2013.
	-3	Included in “accounts payable, accrued expenses and other liabilities” in the accompanying consolidated balance sheet as of January 31, 2013.
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 January 31,
			2014			2013
	Notional amount of foreign currency derivative contracts		$	563,060		$	692,637
	Fair value of foreign currency derivative contracts		$	(203	)	$	2,336
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 January 31,
			Balance Sheet Location			2014			2013
	Derivative Assets
	Derivatives not designated as hedging instruments:
	Foreign currency derivative contracts			Prepaid expenses and		$	1,598		$	5,643
	Foreign currency derivative contracts			other current assets		$	1,598		$	5,643

	Derivative Liabilities
	Derivatives not designated as hedging instruments:
	Foreign currency derivative contracts			Accounts payable,		$	1,801		$	3,307
				accrued expenses
				and other liabilities

Schedule Of The Effect Of The Derivative Instruments Not Designated As Hedging Instruments On The Condensed Consolidated Statements Of Operations	'
	The effect of the derivative instruments not designated as hedging instruments on the consolidated statements of operations during fiscal 2014, 2013 and 2012, respectively, are summarized below (in thousands):


	Derivatives Not Designated as Hedging Instruments		Gains on Derivative Instruments
	Derivatives Not Designated as Hedging Instruments		Recognized in Income
						Fiscal Year Ended January 31,
			Location			2014			2013			2012
	Foreign currency derivative contracts			Other expense		$	108		$	16,591		$	6,221

Schedule Of Components Of Investment Income	'
	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):


			Fiscal Year Ended January 31,
			2014			2013			2012
	Interest income		$	9,512		$	17,903		$	20,791
	Realized gains			5,952			5,007			6,542
	Realized losses			(5,246	)		(3,348	)		(4,065	)

	Total investment income		$	10,218		$	19,562		$	23,268

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
Property and Equipment (Tables)	Jan. 31, 2014
Property Plant And Equipment [Abstract]	'
Schedule Of Property And Equipment	'
	Property and equipment consisted of the following (in thousands):


		As of January 31,
		2014			2013
	Land	$	248,263		$	248,263
	Building improvements		49,572			49,572
	Computers, equipment and software		931,171			328,318
	Furniture and fixtures		58,956			38,275
	Leasehold improvements		296,390			193,181
	Building in progress—leased facility		40,171			0

			1,624,523			857,609
	Less accumulated depreciation and amortization		(383,777	)		(252,940	)

		$	1,240,746		$	604,669

Business_Combinations_Tables

Business Combinations (Tables)	12 Months Ended
Business Combinations (Tables)	Jan. 31, 2014
Schedule Of Goodwill	'
	Goodwill consisted of the following (in thousands):


	Balance as of January 31, 2012	$	785,381
	Rypple		45,579
	Buddy Media		640,534
	GoInstant		45,295
	Other acquisitions		12,410
	Finalization of acquisition date fair values		179

	Balance as of January 31, 2013	$	1,529,378
	EdgeSpring		107,165
	ExactTarget		1,848,653
	Other acquisitions		20,646
	Finalization of acquisition date fair values		(5,019	)

	Balance as of January 31, 2014	$	3,500,823

Expected Future Amortization Expense for Purchased Intangible Assets	'
	The expected future amortization expense for purchased intangible assets as of January 31, 2014 is as follows (in thousands):


	Fiscal Period:
	Fiscal 2015	$	148,889
	Fiscal 2016		133,742
	Fiscal 2017		126,056
	Fiscal 2018		115,061
	Fiscal 2019		101,453
	Thereafter		145,640

	Total amortization expense	$	770,841

ExactTarget	'
Schedule Of Fair Value Of Consideration Transferred	'
	The acquisition date fair value of the consideration transferred for ExactTarget was approximately $2.6 billion, including the proceeds from the term loan of $300.0 million (see Note 5), which consisted of the following (in thousands):


		Fair value
	Cash	$	2,567,098
	Fair value of equity awards assumed		17,428

	Total	$	2,584,526

Estimated Fair Values Of Assets Acquired And Liabilities Assumed	'
	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


		Fair Value
	Cash, cash equivalents and marketable securities	$	91,549
	Accounts receivable		63,320
	Other current assets		20,355
	Customer contract asset, current and noncurrent		205,033
	Property and equipment		64,782
	Other noncurrent assets		4,379
	Intangible assets		706,064
	Goodwill		1,848,653
	Accounts payable, accrued expenses and other liabilities		(65,636	)
	Deferred revenue, current and noncurrent		(46,615	)
	Customer liability, current and noncurrent		(144,792	)
	Other liabilities, noncurrent		(3,104	)
	Deferred tax liability		(159,462	)

	Net assets acquired	$	2,584,526

Identifiable Intangible Assets Acquired And Estimated Useful Lives As Of Date Of Acquisition	'
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair Value			Useful Life
	Developed technologies	$	307,200			4 - 7 years
	Customer relationships		362,200			6 - 8 years
	Trade name and trademark		29,400			10 years
	Other purchased intangible assets		7,264			3 - 4 years

	Total intangible assets subject to amortization	$	706,064

Revenue And Earnings Of Acquired Included In Condensed Consolidated Statement Of Operations	'
	The amounts of revenue and earnings of ExactTarget included in the Company’s consolidated statement of operations from the acquisition date of July 12, 2013 to the period ending January 31, 2014 are as follows (in thousands):


	Total revenues	$	194,008
	Loss	$	(152,948	)
Pro Forma Financial Information	'
	The unaudited pro forma financial information was as follows (in thousands):


		Fiscal Year Ended
		January 31,
		2014			2013
	Total revenues	$	4,267,166		$	3,279,421
	Loss	$	(364,659	)	$	(346,636	)
EdgeSpring	'
Schedule Of Fair Value Of Consideration Transferred	'
	The acquisition date fair value of the consideration transferred for EdgeSpring was approximately $133.7 million, which consisted of the following (in thousands, except share data):


		Fair Value
	Cash	$	62,580
	Common stock (1,850,258 shares)		69,533
	Fair value of stock options and restricted stock awards assumed		1,609

	Total	$	133,722

Estimated Fair Values Of Assets Acquired And Liabilities Assumed	'
	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


		Fair Value
	Current and noncurrent tangible assets	$	4,462
	Intangible assets		32,300
	Goodwill		107,165
	Current and noncurrent liabilities		(666	)
	Deferred tax liability		(9,539	)

	Net assets acquired	$	133,722

Identifiable Intangible Assets Acquired And Estimated Useful Lives As Of Date Of Acquisition	'
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair Value			Useful Life
	Developed technology	$	31,030			5-6 years
	Customer relationships		560			5 years
	Trade name and trademark		710			5 years

	Total intangible assets subject to amortization	$	32,300

2Catalyze, Inc.	'
Schedule Of Fair Value Of Consideration Transferred	'
	The acquisition date fair value of the consideration transferred for Rypple was approximately $50.6 million, which consisted of the following (in thousands):


	Cash	$	50,166
	Fair value of stock options assumed		470

	Total	$	50,636

Estimated Fair Values Of Assets Acquired And Liabilities Assumed	'
	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


	Net tangible assets	$	758
	Deferred tax liability		(1,671	)
	Intangible assets		5,970
	Goodwill		45,579

	Net assets acquired	$	50,636

Identifiable Intangible Assets Acquired And Estimated Useful Lives As Of Date Of Acquisition	'
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair value			Useful Life
	Developed technology	$	4,970			3 years
	Customer relationships		1,000			1 year

	Total intangible assets subject to amortization	$	5,970

Buddy Media, Inc.	'
Schedule Of Fair Value Of Consideration Transferred	'
	The acquisition date fair value of the consideration transferred for Buddy was $735.8 million, which consisted of the following (in thousands, except share data):


	Cash	$	497,500
	Common stock (5,571,096)		202,161
	Fair value of stock options and restricted stock awards assumed		36,092

	Total	$	735,753

Estimated Fair Values Of Assets Acquired And Liabilities Assumed	'
	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):



	Current assets	$	35,609
	Other noncurrent assets		3,424
	Current and noncurrent liabilities		(16,437	)
	Deferred revenue		(3,281	)
	Deferred tax liability		(2,436	)
	Intangible assets		78,340
	Goodwill		640,534

	Net assets acquired	$	735,753

Identifiable Intangible Assets Acquired And Estimated Useful Lives As Of Date Of Acquisition	'
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of acquisition (in thousands):


		Fair value			Useful Life
	Developed technology	$	65,210			5 years
	Customer relationships		11,030			5 years
	Trade name and trademark		2,100			5 years

	Total intangible assets subject to amortization	$	78,340

GoInstant, Inc.	'
Schedule Of Fair Value Of Consideration Transferred	'
	The acquisition date fair value of the consideration transferred for GoInstant was approximately $50.6 million, which consisted of the following (in thousands):


	Cash	$	49,221
	Fair value of stock options assumed		1,336

	Total	$	50,557

Estimated Fair Values Of Assets Acquired And Liabilities Assumed	'
	The following table summarizes the estimated fair values of assets acquired and liabilities assumed as of the date of acquisition (in thousands):


	Net tangible assets	$	473
	Deferred tax liability		(1,771	)
	Developed technology		6,560
	Goodwill		45,295

	Net assets acquired	$	50,557

Other Business Combination	'
Intangible Assets Acquired From Business Combinations	'
	Intangible assets acquired resulting from business combinations are as follows as of January 31, 2014 (in thousands):


		Gross			Accumulated			Net Book		Weighted
		Fair Value			Amortization			Value		Average
										Remaining
										Useful Life
	Acquired developed technology	$	659,770		$	(281,766	)	$	378,004		4.9
	Customer relationships		409,135			(53,669	)		355,466		7
	Trade name and trademark		38,930			(8,721	)		30,209		9
	Territory rights and other		11,125			(3,963	)		7,162		3.8

	Total	$	1,118,960		$	(348,119	)	$	770,841		6


	Intangible assets acquired resulting from business combinations were as follows as of January 31, 2013 (in thousands):


		Gross			Accumulated			Net Book		Weighted
		Fair Value			Amortization			Value		Average
										Remaining
										Useful Life
	Acquired developed technology	$	310,582		$	(172,823	)	$	137,759		2.7
	Customer relationships		42,775			(21,599	)		21,176		3.8
	Trade name and trademark		8,820			(4,930	)		3,890		2.8
	Territory rights		3,203			(2,261	)		942		2.4

		$	365,380		$	(201,613	)	$	163,767		2.9

Convertible_Senior_Notes_and_T1

Convertible Senior Notes and Term Loan (Tables)	12 Months Ended
Convertible Senior Notes and Term Loan (Tables)	Jan. 31, 2014
Debt Disclosure [Abstract]	'
Summary Of Convertible Senior Notes	'
	Convertible Senior Notes


	(In thousands)		Par Value			Equity			Liability Component of Par
						Component			Value as of January 31,
						Recorded
						at Issuance			2014		2013
	0.75% Convertible Senior Notes due January 15, 2015		$	568,864		$	125,530	(1)	$	542,159	$	521,278
	0.25% Convertible Senior Notes due April 1, 2018			1,150,000			122,421	(2)		1,046,930		0

	-1	This amount represents the equity component recorded at the initial issuance of the 0.75% convertible senior notes. As of January 31, 2014, $26.7 million was reclassified as temporary equity on the consolidated balance sheet as these notes are convertible.
	-2	This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes.
Schedule Of Conversion Of Senior Notes To Common Stock	'

			Conversion			Initial			Convertible Date
			Rate per $1,000			Conversion
			Par Value			Price per
						Share
	0.75% Senior Notes			46.8588		$	21.34			October 15, 2014
	0.25% Senior Notes			15.0512		$	66.44			1-Jan-18
Schedule Of Convertible Senior Notes	'
	The Notes consisted of the following (in thousands):


			As of January 31,
			2014			2013
	Liability component :
	Principal:
	0.75% Senior Notes (1)		$	568,864		$	574,890
	0.25% Senior Notes (1)			1,150,000			0
	Less: debt discount, net
	0.75% Senior Notes (2)			(26,705	)		(53,612	)
	0.25% Senior Notes (3)			(103,070	)		0

	Net carrying amount		$	1,589,089		$	521,278


	-1	The effective interest rates of the 0.75% Senior Notes and 0.25% Senior Notes are 5.86% and 2.53%, respectively. These interest rates were based on the interest rates of a similar liability at the time of issuance that did not have an associated convertible feature.
	-2	Included in the consolidated balance sheets within Convertible 0.75% Senior Notes (which is classified as a current liability, as these notes were convertible) and is amortized over the life of the 0.75% Senior Notes using the effective interest rate method.
	-3	Included in the consolidated balance sheets within Convertible 0.25% Senior Notes (which is classified as a noncurrent liability) and is amortized over the life of the 0.25% Senior Notes using the effective interest rate method.
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 “Note Hedges”).


	(in thousands, except for shares)		Date			Purchase			Shares
	0.75% Note Hedges			January 2010		$	126,500			26,943,812
	0.25% Note Hedges			March 2013		$	153,800			17,308,880
Components Of Warrants	'
	Warrants


			Date			Proceeds			Shares		Strike
			Date			(in thousands)			Shares		Price
	0.75% Warrants			January 2010		$	59,300			26,943,812	$	29.88
	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 and the Term Loan prior to capitalization of interest (in thousands):


			Fiscal Year Ended January 31,
			2014			2013			2012
	Contractual interest expense		$	10,195		$	4,313		$	4,312
	Amortization of debt issuance costs			4,470			1,324			1,324
	Amortization of debt discount			46,942			25,131			23,720

			$	61,607		$	30,768		$	29,356

Other_Balance_Sheet_Accounts_T

Other Balance Sheet Accounts (Tables)	12 Months Ended
Other Balance Sheet Accounts (Tables)	Jan. 31, 2014
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 January 31,
		2014		2013
	Deferred income taxes, net	$	49,279	$	7,321
	Prepaid income taxes		23,571		21,180
	Customer contract asset		77,368		0
	Prepaid expenses and other current assets		158,962		104,813

		$	309,180	$	133,314

Schedule Of Capitalized Software Costs	'
	Capitalized software consisted of the following (in thousands):


		As of January 31,
		2014		2013
	Capitalized internal-use software development costs, net of accumulated amortization of $101,687 and $72,448, respectively	$	72,915	$	59,647
	Acquired developed technology, net of accumulated amortization of $294,628 and $179,906, respectively		409,002		147,676

		$	481,917	$	207,323

Schedule Of Other Assets	'
	Other assets consisted of the following (in thousands):


		As of January 31,
		2014		2013
	Deferred income taxes, noncurrent, net	$	9,691	$	19,212
	Long-term deposits		17,970		13,422
	Purchased intangible assets, net of accumulated amortization of $66,399 and $28,790, respectively		416,119		49,354
	Acquired intellectual property, net of accumulated amortization of $11,304 and $7,074, respectively		11,957		13,872
	Strategic investments		92,489		51,685
	Customer contract asset		18,182		0
	Other		47,082		21,415

		$	613,490	$	168,960

Schedule Of Accrued Expenses And Other Current Liabilities	'
	Accounts payable, accrued expenses and other liabilities consisted of the following (in thousands):


		As of January 31,
		2014		2013
	Accounts payable	$	64,988	$	14,535
	Accrued compensation		397,002		311,595
	Accrued other liabilities		235,543		138,165
	Accrued income and other taxes payable		153,026		120,341
	Accrued professional costs		15,864		10,064
	Customer liability, current		53,957		0
	Accrued rent		13,944		3,006

		$	934,324	$	597,706

Schedule Of Other Noncurrent Liabilities	'
	Other noncurrent liabilities consisted of the following (in thousands):


		As of January 31,
		2014		2013
	Deferred income taxes and income taxes payable	$	108,760	$	49,074
	Customer liability, noncurrent		13,953		0
	Financing obligation, building in progress—leased facility		40,171		0
	Long-term lease liabilities and other		594,303		126,658

		$	757,187	$	175,732

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Jan. 31, 2014
Equity [Abstract]	'
Schedule Of Stock Activity	'
	Stock activity excluding the ESPP is as follows:


					Options Outstanding
		Shares			Outstanding			Weighted-		Aggregate
		Available			Stock			Average		Intrinsic Value
		for Grant			Options			Exercise Price		(in thousands)
	Balance as of January 31, 2013		11,759,740			29,983,292		$	26.6
	Increase in shares authorized:
	2004 Equity Incentive Plan		14,000,000			0			0
	2013 Equity Incentive Plan		76,443,240			0			0
	2010 EdgeSpring Plan		124,859			0			0
	2004 ExactTarget Plan		136,986			0			0
	2008 ExactTarget Plan		3,202,185			0			0
	Options granted under all plans		(10,866,107	)		10,866,107			41.08
	Restricted stock activity		(14,792,960	)
	Stock grants to board and advisory board members		(210,320	)
	Exercised		0			(9,932,832	)		19.25
	1999 Plan shares expired		(26,257,609	)		0			0
	Cancelled		2,312,522			(2,312,522	)		31.37

	Balance as of January 31, 2014		55,852,536			28,604,045		$	34.26	$	751,314

	Vested or expected to vest					27,258,499		$	33.81	$	728,393

	Exercisable as of January 31, 2014					10,921,637		$	26.45	$	372,249

Schedule Of Stock Options Outstanding	'
	The following table summarizes information about stock options outstanding as of January 31, 2014:


		Options Outstanding								Options Exercisable
	Range of Exercise	Number			Weighted-Average			Weighted-Average		Number of		Weighted-Average
	Prices	Outstanding			Remaining			Exercise Price		Shares		Exercise Price
					Contractual Life
					(Years)
	$0.26 to $17.06		4,142,029			2.3		$	10.93		3,400,198	$	11.56
	$17.83 to $27.06		4,952,072			3.9			25.61		2,022,376		25.97
	$27.56 to $35.07		2,016,954			3.7			31.54		754,568		31.94
	$35.63		4,424,751			1.8			35.63		3,129,209		35.63
	$35.87 to $39.09		6,261,008			3.6			38.02		1,588,536		37.96
	$40.19 to $52.14		898,060			5.7			42.9		26,750		42.11
	$52.30 to $59.37		5,909,171			6.8			52.49		0		0

			28,604,045			3.9		$	34.26		10,921,637	$	26.45

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, 2012		19,849,052		$	0.001
	Granted		16,283,752			0.001
	Cancelled		(2,471,624	)		0.001
	Vested and converted to shares		(6,878,560	)		0.001

	Balance as of January 31, 2013		26,782,620		$	0.001
	Granted		10,884,991			0.001
	Cancelled		(3,616,383	)		0.001
	Vested and converted to shares		(9,397,650	)		0.001

	Balance as of January 31, 2014		24,653,578		$	0.001		$	1,492,281

	Expected to vest		21,442,620					$	1,297,922

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 January 31, 2014:


	Options outstanding		28,604,045
	Restricted stock awards and units outstanding		24,653,578
	Stock available for future grant:
	2013 Equity Incentive Plan		55,626,162
	2006 Inducement Equity Incentive Plan		226,374
	2004 Employee Stock Purchase Plan		6,114,165
	Convertible senior notes		43,965,164
	Warrants		44,252,692

			203,442,180

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Jan. 31, 2014
Income Tax Disclosure [Abstract]	'
Domestic And Foreign Components Of Income (Loss) Before Provision (Benefit) For Income Taxes	'
	The domestic and foreign components of loss before provision for (benefit from) income taxes consisted of the following (in thousands):


		Fiscal Year Ended January 31,
		2014			2013			2012
	Domestic	$	(326,392	)	$	(90,743	)	$	(27,303	)
	Foreign		(31,543	)		(37,051	)		(6,014	)

		$	(357,935	)	$	(127,794	)	$	(33,317	)

Schedule Of Income Taxes Provision (Benefit)	'
	The provision for (benefit from) income taxes consisted of the following (in thousands):


		Fiscal Year Ended January 31,
		2014			2013			2012
	Current:
	Federal	$	(10,431	)	$	12,896		$	9,344
	State		(245	)		3,021			4,346
	Foreign		39,784			30,261			15,709

	Total		29,108			46,178			29,399
	Deferred:
	Federal		(128,798	)		72,656			(36,601	)
	State		(22,012	)		28,538			(10,603	)
	Foreign		(4,058	)		(4,721	)		(3,940	)

	Total		(154,868	)		96,473			(51,144	)

	Provision for (benefit from) for income taxes	$	(125,760	)	$	142,651		$	(21,745	)

Reconciliation Of Statutory Federal Income Tax Rate	'
	A reconciliation of income taxes at the statutory federal income tax rate to the provision for (benefit from) income taxes included in the accompanying consolidated statements of operations is as follows (in thousands):


		Fiscal Year Ended January 31,
		2014			2013			2012
	U.S. federal taxes at statutory rate	$	(125,277	)	$	(44,729	)	$	(11,661	)
	State, net of the federal benefit		(10,780	)		(969	)		(6	)
	Foreign taxes in excess of the U.S. statutory rate		33,412			16,931			10,555
	Change in valuation allowance		(25,048	)		186,806			0
	Tax credits		(22,293	)		(17,670	)		(15,049	)
	Non-deductible expenses		21,407			4,807			5,345
	Tax expense/(benefit) from acquisitions		1,811			(3,568	)		(12,575	)
	Other, net		1,008			1,043			1,646

		$	(125,760	)	$	142,651		$	(21,745	)

Significant Components Of Deferred Tax Assets And Liabilities	'
	Significant components of the Company’s deferred tax assets and liabilities were as follows (in thousands):


		As of January 31,
		2014			2013
	Deferred tax assets:
	Net operating loss carryforwards	$	259,465		$	62,603
	Deferred stock compensation		82,840			69,593
	Tax credits		107,381			75,812
	Deferred rent expense		47,063			28,022
	Accrued liabilities		79,235			63,257
	Deferred revenue		8,522			30,441
	Basis difference on investment		11,999			8,569
	Financing obligation		63,673			0
	Other		17,762			9,916

	Total deferred tax assets		677,940			348,213
	Less valuation allowance		(180,223	)		(192,682	)

	Deferred tax assets, net of valuation allowance		497,717			155,531
	Deferred tax liabilities:
	Deferred commissions		(87,625	)		(72,470	)
	Purchased intangibles		(259,409	)		(14,739	)
	Unrealized gains on investments		(5,232	)		(2,768	)
	Depreciation and amortization		(144,752	)		(41,832	)
	Other		(3,599	)		(7,351	)

	Total deferred tax liabilities		(500,617	)		(139,160	)

	Net deferred tax assets	$	(2,900	)	$	16,371

Schedule Of Unrecognized Tax Benefits	'
	A reconciliation of the beginning and ending balance of total unrecognized tax benefits for fiscal years 2014, 2013, and 2012 is as follows (in thousands):


		Fiscal Year Ended January 31,
		2014			2013			2012
	Balance as of February 1,	$	75,144		$	51,971		$	27,462
	Tax positions taken in prior period:
	Gross increases		8,420			7,304			10,008
	Gross decreases		(4,466	)		(4,460	)		(23	)
	Tax positions taken in current period:
	Gross increases		27,952			24,401			15,965
	Settlements		0			(121	)		0
	Lapse of statute of limitations		(5,205	)		(4,159	)		(1,143	)
	Currency translation effect		430			208			(298	)

	Balance as of January 31,	$	102,275		$	75,144		$	51,971

EarningsLoss_Per_Share_Tables

Earnings/Loss Per Share (Tables)	12 Months Ended
Earnings/Loss Per Share (Tables)	Jan. 31, 2014
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 loss per share is as follows (in thousands):

		Fiscal Year Ended January 31,
		2014			2013			2012
	Numerator:
	Net loss	$	(232,175	)	$	(270,445	)	$	(11,572	)

	Denominator:
	Weighted-average shares outstanding for basic loss per share		597,613			564,896			541,208
	Effect of dilutive securities:
	Convertible senior notes		0			0			0
	Employee stock awards		0			0			0
	Warrants		0			0			0

	Adjusted weighted-average shares outstanding and assumed conversions for diluted loss per share		597,613			564,896			541,208

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):


		Fiscal Year Ended January 31,
		2014			2013			2012
	Stock awards		19,664			30,068			30,240
	Convertible senior notes		43,965			26,940			26,940
	Warrants		44,253			26,944			26,944

Commitments_Tables

Commitments (Tables)	12 Months Ended
Commitments (Tables)	Jan. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Schedule Of Future Minimum Lease Payments Under Non-Cancelable Operating And Capital Leases	'
	As of January 31, 2014, the future minimum lease payments under non-cancelable operating and capital leases are as follows (in thousands):


			Capital			Operating		Financing
			Leases			Leases		Obligation,
								Building in
								Progress—Leased
								Facility(1)
	Fiscal Period:
	Fiscal 2015		$	77,455		$	196,514	$	0
	Fiscal 2016			72,193			189,757		1,777
	Fiscal 2017			73,845			160,521		16,877
	Fiscal 2018			83,369			129,733		21,107
	Fiscal 2019			99,643			119,027		21,551
	Thereafter			200,000			587,528		274,512

	Total minimum lease payments			606,505		$	1,383,080	$	335,824

	Less: amount representing interest			(88,260	)

	Present value of capital lease obligations		$	518,245


	-1	Total Financing Obligation, Building in Progress—Leased Facility noted above represents the total obligation on the lease agreement noted in Footnote 3, “Property and Equipment”, and includes $40.2 million that was recorded to Financing obligation, building in progress—leased facility, which is included in Other noncurrent liabilities on the balance sheet.

Selected_Quarterly_Financial_D1

Selected Quarterly Financial Data (Tables)	12 Months Ended
Selected Quarterly Financial Data (Tables)	Jan. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of Quarterly Financial Information	'
	Selected summarized quarterly financial information for fiscal 2014 and 2013 is as follows:


			1st			2nd			3rd			4th			Fiscal Year
			Quarter			Quarter			Quarter			Quarter			Fiscal Year
			(in thousands, except per share data)
	Fiscal 2014
	Revenues		$	892,633		$	957,094		$	1,076,034		$	1,145,242		$	4,071,003
	Gross profit			683,639			739,377			807,847			871,712			3,102,575
	Loss from operations			(44,540	)		(39,857	)		(97,931	)		(103,746	)		(286,074	)
	Net income (loss)			(67,721	)		76,603			(124,434	)		(116,623	)		(232,175	)
	Basic net income (loss) per share		$	(0.12	)	$	0.13		$	(0.21	)	$	(0.19	)	$	(0.39	)
	Diluted net income (loss) per share		$	(0.12	)	$	0.12		$	(0.21	)	$	(0.19	)	$	(0.39	)

	Fiscal 2013
	Revenues		$	695,467		$	731,649		$	788,398		$	834,681		$	3,050,195
	Gross profit			543,916			569,231			602,150			651,319			2,366,616
	Loss from operations			(22,249	)		(13,466	)		(54,188	)		(20,807	)		(110,710	)
	Net loss			(19,475	)		(9,829	)		(220,297	)		(20,844	)		(270,445	)
	Basic net loss per share (1)		$	(0.04	)	$	(0.02	)	$	(0.39	)	$	(0.04	)	$	(0.48	)
	Diluted net loss per share (1)		$	(0.04	)	$	(0.02	)	$	(0.39	)	$	(0.04	)	$	(0.48	)

	-1	Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Summary_of_Business_and_Signif3

Summary of Business and Significant Accounting Policies - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Apr. 30, 2013	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
		Customer	Customer	Customer
		Segment
Concentration Risk [Line Items]	'	'	'	'
Common stock, shares authorized	'	1,600,000	1,600,000	'
Stock split of the common stock	'Four-for-one	'On March 20, 2013, the Company's certificate of incorporation was amended to increase the number of authorized shares of common stock from 400.0 million to 1.6 billion in order to provide for a four-for-one stock split of the common stock effected in the form of a stock dividend.	'	'
Number of reportable operating segments	'	1	'	'
Percentage of customer accounts receivable required to be considered a significant customer	'	5.00%	5.00%	5.00%
Customers exceeding concentration of accounts receivable threshold, number	'	0	0	0
Percentage of customer total revenue required to be considered a significant customer	'	5.00%	5.00%	5.00%
Customers exceeding concentration of total revenue threshold, number	'	0	0	0
Stock-based expense recognized over vesting term, years	'	'4 years	'	'
Expected dividend yield	'	0.00%	'	'
Advertising expense	'	$155.80	$110.70	$80.30
Percentage of tax benefit likely to be realized upon settlement	'	50.00%	'	'
Minimum	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Deferred and amortized commission period (in months)	'	12	'	'
Maximum	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Deferred and amortized commission period (in months)	'	36	'	'
Revenue \| Outside Americas	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk percentage	'	96.00%	94.00%	93.00%
Assets, Total \| Outside Americas	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Concentration risk percentage	'	12.00%	16.00%	'
Before Stock Split	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Common stock, shares authorized	'	400,000	'	'
After Stock Split	'	'	'	'
Concentration Risk [Line Items]	'	'	'	'
Common stock, shares authorized	'	1,600,000	'	'

Revenues_by_Geographical_Regio

Revenues by Geographical Region (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues by geographical region	$1,145,242	$1,076,034	$957,094	$892,633	$834,681	$788,398	$731,649	$695,467	$4,071,003	$3,050,195	$2,266,539
Reportable Geographical Components \| Americas	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues by geographical region	'	'	'	'	'	'	'	'	2,899,837	2,123,736	1,540,289
Reportable Geographical Components \| Europe	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues by geographical region	'	'	'	'	'	'	'	'	741,220	525,304	408,456
Reportable Geographical Components \| Asia Pacific	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues by geographical region	'	'	'	'	'	'	'	'	$429,946	$401,155	$317,794

Schedule_of_Property_and_Equip

Schedule of Property and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Jan. 31, 2014
Furniture and fixtures	'
Property, Plant and Equipment [Line Items]	'
Property and equipment, estimated useful lives	'5 years
Leasehold improvements	'
Property, Plant and Equipment [Line Items]	'
Property and equipment, estimated useful lives, description	'Shorter of the lease term or 10 years
Building improvements	'
Property, Plant and Equipment [Line Items]	'
Property and equipment, estimated useful lives, description	'Amortized over the estimated useful lives of the respective assets when they are ready for their intended use
Minimum \| Computer, equipment and software	'
Property, Plant and Equipment [Line Items]	'
Property and equipment, estimated useful lives	'3 years
Maximum \| Computer, 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

Schedule_of_Assumptions_Used_t

Schedule of Assumptions Used to Calculate Fair Value of Options Granted (Detail) (USD $)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Volatility, minimum	37.00%	43.00%	47.00%
Volatility, maximum	43.00%	51.00%	51.00%
Estimated life	'3 years 4 months 24 days	'3 years 8 months 12 days	'3 years 8 months 12 days
Risk-free interest rate, minimum	0.48%	0.43%	0.68%
Risk-free interest rate, maximum	1.21%	0.77%	1.77%
Weighted-average fair value per share of grants	$14.08	$12.94	$12.29
ESPP	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Volatility, minimum	31.00%	39.00%	50.00%
Volatility, maximum	35.00%	46.00%	53.00%
Estimated life	'9 months	'9 months	'9 months
Risk-free interest rate, minimum	0.07%	0.03%	0.95%
Risk-free interest rate, maximum	0.10%	0.22%	1.08%
Weighted-average fair value per share of grants	$10.30	$11.39	$8.59

Schedule_of_Marketable_Securit

Schedule of Marketable Securities (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	$537,136	$1,005,293
Unrealized Gains on Marketable Securities	2,560	7,416
Unrealized Losses on Marketable Securities	-314	-1,669
Fair Value of Marketable Securities	539,382	1,011,040
Corporate Notes and Other Obligations	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	340,706	685,695
Unrealized Gains on Marketable Securities	1,314	5,113
Unrealized Losses on Marketable Securities	-170	-919
Fair Value of Marketable Securities	341,850	689,889
US Treasury Securities	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	16,016	38,864
Unrealized Gains on Marketable Securities	28	20
Unrealized Losses on Marketable Securities	0	-15
Fair Value of Marketable Securities	16,044	38,869
Mortgage Backed Obligations	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	24,888	12,447
Unrealized Gains on Marketable Securities	281	278
Unrealized Losses on Marketable Securities	-93	-2
Fair Value of Marketable Securities	25,076	12,723
Municipal Securities	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	2,000	2,697
Unrealized Gains on Marketable Securities	1	1
Unrealized Losses on Marketable Securities	-3	-32
Fair Value of Marketable Securities	1,998	2,666
Foreign Government Obligations	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	24,305	9,572
Unrealized Gains on Marketable Securities	171	72
Unrealized Losses on Marketable Securities	-2	-3
Fair Value of Marketable Securities	24,474	9,641
Collateralized Mortgage Obligations	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	'	150,794
Unrealized Gains on Marketable Securities	'	1,775
Unrealized Losses on Marketable Securities	'	-693
Fair Value of Marketable Securities	'	151,876
US Agency Obligations	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	14,726	105,224
Unrealized Gains on Marketable Securities	9	157
Unrealized Losses on Marketable Securities	-10	-5
Fair Value of Marketable Securities	14,725	105,376
Asset Backed Securities	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	38,213	'
Unrealized Gains on Marketable Securities	39	'
Unrealized Losses on Marketable Securities	-35	'
Fair Value of Marketable Securities	38,217	'
Covered Bonds	'	'
Investment Holdings [Line Items]	'	'
Amortized Cost on Marketable Securities	76,282	'
Unrealized Gains on Marketable Securities	717	'
Unrealized Losses on Marketable Securities	-1	'
Fair Value of Marketable Securities	$76,998	'

Schedule_of_ShortTerm_and_Long

Schedule of Short-Term and Long-Term Marketable Securities (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Investments Debt And Equity Securities [Abstract]	'	'
Short-term (due in one year or less)	$57,139	$120,376
Long-term (due after one year)	482,243	890,664
Fair Value of Marketable Securities	$539,382	$1,011,040

Schedule_of_Marketable_Securit1

Schedule of Marketable Securities in Unrealized Loss Position (Detail) (USD $)	Jan. 31, 2014
In Thousands, unless otherwise specified	Jan. 31, 2014
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	$125,815
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-274
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	12,609
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-40
Marketable securities in an unrealized loss position, Fair Value	138,424
Marketable securities in an unrealized loss position, Unrealized Losses	-314
Corporate Notes and Other Obligations	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	95,011
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-168
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	1,324
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-2
Marketable securities in an unrealized loss position, Fair Value	96,335
Marketable securities in an unrealized loss position, Unrealized Losses	-170
Mortgage Backed Obligations	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	7,212
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-60
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	2,863
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-33
Marketable securities in an unrealized loss position, Fair Value	10,075
Marketable securities in an unrealized loss position, Unrealized Losses	-93
Asset Backed Securities	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	10,345
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-31
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	1,924
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-4
Marketable securities in an unrealized loss position, Fair Value	12,269
Marketable securities in an unrealized loss position, Unrealized Losses	-35
Municipal Securities	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	997
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	997
Marketable securities in an unrealized loss position, Unrealized Losses	-3
Foreign Government Obligations	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	2,999
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-1
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	6,498
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	-1
Marketable securities in an unrealized loss position, Fair Value	9,497
Marketable securities in an unrealized loss position, Unrealized Losses	-2
US Agency Obligations	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	7,219
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-10
Marketable securities in an unrealized loss position for more than 12 months, Fair Value	0
Marketable securities in an unrealized loss position for more than 12 months, Unrealized Losses	0
Marketable securities in an unrealized loss position, Fair Value	7,219
Marketable securities in an unrealized loss position, Unrealized Losses	-10
Covered Bonds	'
Investment Holdings [Line Items]	'
Marketable securities in an unrealized loss position for less than 12 months, Fair Value	2,032
Marketable securities in an unrealized loss position for less than 12 months, Unrealized Losses	-1
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	2,032
Marketable securities in an unrealized loss position, Unrealized Losses	($1)

Investments_Additional_Informa

Investments - Additional Information (Detail) (USD $)	12 Months Ended
Investments - Additional Information (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
Investment Holdings [Line Items]	'	'
Fair value of marketable security	$539,382,000	$1,011,040,000
Strategic investments	77,000,000	46,800,000
Strategic Investments	'	'
Investment Holdings [Line Items]	'	'
Fair value of marketable security	15,500,000	4,900,000
Unrealized gain on marketable securities	13,300,000	1,700,000
Maximum	'	'
Investment Holdings [Line Items]	'	'
Unrealized losses on fixed rate investments, upper range value	18,000,000	'
Minimum	'	'
Investment Holdings [Line Items]	'	'
Unrealized losses on fixed rate investments, lower range value	$1,000,000	'

Schedule_of_Assets_and_Liabili

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jan. 31, 2014		Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014		Jan. 31, 2013
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	[1]	$0	[2]
Total Assets	87,898		434,210
Foreign currency derivative contracts	0	[3]	0	[4]
Total Liabilities	0		0
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Time Deposits	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	0	[5]	0	[6]
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Money Market Mutual Funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	87,898	[5]	385,700	[6]
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Corporate Notes and Other Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Quoted Prices In Active Markets For Identical Assets (Level 1) \| US Treasury Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		38,869
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Mortgage Backed Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Asset Backed Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		'
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Municipal Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Foreign Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		9,641
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Covered Bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		'
Quoted Prices In Active Markets For Identical Assets (Level 1) \| Collateralized Mortgage Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	'		0
Significant Other Observable Inputs (Level 2)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency derivative contracts	1,598	[1]	5,643	[2]
Total Assets	753,680		990,545
Foreign currency derivative contracts	1,801	[3]	3,307	[4]
Total Liabilities	1,801		3,307
Significant Other Observable Inputs (Level 2) \| Time Deposits	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	212,700	[5]	22,372	[6]
Significant Other Observable Inputs (Level 2) \| Money Market Mutual Funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	0	[5]	0	[6]
Significant Other Observable Inputs (Level 2) \| Corporate Notes and Other Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	341,850		689,889
Significant Other Observable Inputs (Level 2) \| US Treasury Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	16,044		0
Significant Other Observable Inputs (Level 2) \| Mortgage Backed Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	25,076		12,723
Significant Other Observable Inputs (Level 2) \| Asset Backed Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	38,217		'
Significant Other Observable Inputs (Level 2) \| Municipal Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	1,998		2,666
Significant Other Observable Inputs (Level 2) \| Foreign Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	24,474		0
Significant Other Observable Inputs (Level 2) \| Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	14,725		105,376
Significant Other Observable Inputs (Level 2) \| Covered Bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	76,998		'
Significant Other Observable Inputs (Level 2) \| Collateralized Mortgage Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	'		151,876
Significant Unobservable Inputs (Level 3)	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency derivative contracts	0	[1]	0	[2]
Total Assets	0		0
Foreign currency derivative contracts	0	[3]	0	[4]
Total Liabilities	0		0
Significant Unobservable Inputs (Level 3) \| Time Deposits	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	0	[5]	0	[6]
Significant Unobservable Inputs (Level 3) \| Money Market Mutual Funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	0	[5]	0	[6]
Significant Unobservable Inputs (Level 3) \| Corporate Notes and Other Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Significant Unobservable Inputs (Level 3) \| US Treasury Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Significant Unobservable Inputs (Level 3) \| Mortgage Backed Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Significant Unobservable Inputs (Level 3) \| Asset Backed Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		'
Significant Unobservable Inputs (Level 3) \| Municipal Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Significant Unobservable Inputs (Level 3) \| Foreign Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Significant Unobservable Inputs (Level 3) \| Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		0
Significant Unobservable Inputs (Level 3) \| Covered Bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	0		'
Significant Unobservable Inputs (Level 3) \| Collateralized Mortgage Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	'		0
Net Carrying Value - Balance	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Foreign currency derivative contracts	1,598	[1]	5,643	[2]
Total Assets	841,578		1,424,755
Foreign currency derivative contracts	1,801	[3]	3,307	[4]
Total Liabilities	1,801		3,307
Net Carrying Value - Balance \| Time Deposits	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	212,700	[5]	22,372	[6]
Net Carrying Value - Balance \| Money Market Mutual Funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Cash equivalents	87,898	[5]	385,700	[6]
Net Carrying Value - Balance \| Corporate Notes and Other Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	341,850		689,889
Net Carrying Value - Balance \| US Treasury Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	16,044		38,869
Net Carrying Value - Balance \| Mortgage Backed Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	25,076		12,723
Net Carrying Value - Balance \| Asset Backed Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	38,217		'
Net Carrying Value - Balance \| Municipal Securities	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	1,998		2,666
Net Carrying Value - Balance \| Foreign Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	24,474		9,641
Net Carrying Value - Balance \| Government Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	14,725		105,376
Net Carrying Value - Balance \| Covered Bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	76,998		'
Net Carrying Value - Balance \| Collateralized Mortgage Obligations	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Marketable securities	'		$151,876

[1]	Included in "prepaid expenses and other current assets" in the accompanying consolidated balance sheet as of January 31, 2014.
[2]	Included in "prepaid expenses and other current assets" in the accompanying consolidated balance sheet as of January 31, 2013.
[3]	Included in "accounts payable, accrued expenses and other liabilities" in the consolidated balance sheet as of January 31, 2014.
[4]	Included in "accounts payable, accrued expenses and other liabilities" in the accompanying consolidated balance sheet as of January 31, 2013.
[5]	Included in "cash and cash equivalents" in the accompanying consolidated balance sheet as of January 31, 2014, in addition to $481.0 million of cash.
[6]	Included in "cash and cash equivalents" in the accompanying consolidated balance sheet as of January 31, 2013, in addition to $339.2 million of cash.

Schedule_of_Assets_and_Liabili1

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Parenthetical) (Detail) (Cash, USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Cash	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	$481,000	$339,200

Schedule_of_Outstanding_Foreig

Schedule of Outstanding Foreign Currency Derivative Contracts Related Primarily to Intercompany Receivables and Payables (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Derivative [Line Items]	'	'
Fair value of foreign currency derivative contracts	($203)	$2,336
Foreign Exchange Derivative Contracts	'	'
Derivative [Line Items]	'	'
Notional amount of foreign currency derivative contracts	$563,060	$692,637

Fair_Value_of_Outstanding_Deri

Fair Value of Outstanding Derivative Instruments (Detail) (Derivatives Not Designated As Hedging Instruments, Foreign Exchange Derivative Contracts, USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Prepaid Expenses and Other Current Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Assets	$1,598	$5,643
Accounts Payable, Accrued Expenses and Other Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liabilities	$1,801	$3,307

Effect_of_Derivative_Instrumen

Effect of Derivative Instruments Not Designated as Hedging Instruments on Condensed Consolidated Statements of Operations (Detail) (Derivatives Not Designated As Hedging Instruments, Foreign Exchange Derivative Contracts, Other Income (Expense), USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Derivatives Not Designated As Hedging Instruments \| Foreign Exchange Derivative Contracts \| Other Income (Expense)	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gains on Derivative Instruments Recognized in Income	$108	$16,591	$6,221

Schedule_of_Components_of_Inve

Schedule of Components of Investment Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Investments Debt And Equity Securities [Abstract]	'	'	'
Interest income	$9,512	$17,903	$20,791
Realized gains	5,952	5,007	6,542
Realized losses	-5,246	-3,348	-4,065
Total investment income	$10,218	$19,562	$23,268

Schedule_of_Property_and_Equip1

Schedule of Property and Equipment (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Property Plant And Equipment [Abstract]	'	'
Land	$248,263	$248,263
Building improvements	49,572	49,572
Computers, equipment and software	931,171	328,318
Furniture and fixtures	58,956	38,275
Leasehold improvements	296,390	193,181
Building in progress-leased facility	40,171	0
Property, Plant and Equipment, Gross, Total	1,624,523	857,609
Less accumulated depreciation and amortization	-383,777	-252,940
Property and equipment, net	$1,240,746	$604,669

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Nov. 30, 2010	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012	Dec. 31, 2012
	acre	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012	sqft
Property Plant And Equipment [Abstract]	'	'	'	'	'
Depreciation and amortization expense	'	$185,900,000	$101,100,000	$69,800,000	'
Fixed assets acquired under capital lease agreements	'	612,000,000	136,900,000	'	'
Accumulated amortization relating to computers, equipment and software under capital leases	'	109,100,000	57,800,000	'	'
Capital lease agreement, contractual term	'	'6 years	'	'	'
Capital lease agreement period	'	'9 years	'	'	'
Capital lease agreement, renewal period	'	'3 years	'	'	'
Acres of undeveloped real estate purchased	14	'	'	'	'
Perpetual parking rights	23,300,000	'	'	'	'
Total carrying value of the land, building improvements and perpetual parking rights	'	321,100,000	'	'	'
Rentable square feet of office space	'	'	'	'	445,000
Capitalized construction costs	'	40,200,000	'	'	'
Noncurrent financing obligation	'	40,171,000	0	'	'
Expected financing obligation	'	335,800,000	'	'	'
Impairment of long-lived assets	'	$0	$0	$0	'

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2014

Jan. 31, 2013

Jul. 12, 2013

Jan. 31, 2014

Jun. 12, 2013

Jan. 31, 2014

Feb. 02, 2012

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2014

Jan. 31, 2013

Entity

Minimum

Maximum

ExactTarget

EdgeSpring

2Catalyze, Inc.

Other Business Combinations

Business Acquisition [Line Items]

Business acquisition date

12-Jul-13

12-Jun-13

1-Feb-12

Fair value of consideration transferred

$2,584,526,000

$133,722,000

$50,636,000

Proceeds from term loan

300,000,000

Share conversion ratio

0.84

0.17

0.044

Unvested options assumed with a fair value

102,200,000

4,700,000

2,200,000

Total consideration allocated to the purchase consideration

17,400,000

1,600,000

500,000

Total consideration allocated to future services

84,800,000

3,100,000

1,700,000

Number of business acquired

Total aggregate purchase price paid in cash, net of cash acquired

2,617,302,000

579,745,000

422,699,000

2,567,098,000

62,580,000

50,166,000

31,700,000

15,100,000

Total intangible assets subject to amortization

14,600,000

4,100,000

706,064,000

32,300,000

5,970,000

Finite-Lived Intangible Assets, Useful Life

'3 years

'1 year

'5 years

'3 years

Purchase Price allocation to Goodwill

20,646,000

12,410,000

1,848,653,000

107,165,000

45,579,000

Net tangible assets

2,800,000

64,782,000

Deferred tax liabilities

$4,400,000

$1,000,000

$159,462,000

$9,539,000

$1,671,000

Schedule_of_Fair_Value_of_Cons

Schedule of Fair Value of Consideration Transferred (Detail) (USD $)

12 Months Ended

0 Months Ended

In Thousands, unless otherwise specified

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Jul. 12, 2013

Jun. 12, 2013

Feb. 02, 2012

Aug. 13, 2012

Sep. 04, 2012

ExactTarget

EdgeSpring

2Catalyze, Inc.

Buddy Media, Inc.

GoInstant, Inc.

Common Stock

Stock Options And Restricted Stock

Stock Options

Common Stock

Stock Options And Restricted Stock

Stock Options

Business Acquisition [Line Items]

Cash

$2,617,302

$579,745

$422,699

$2,567,098

$62,580

$50,166

$497,500

$49,221

Fair value of equity interests issued as consideration, value

17,428

69,533

1,609

470

202,161

36,092

1,336

Total

$2,584,526

$133,722

$50,636

$735,753

$50,557

Estimated_Fair_Values_of_Asset

Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Jul. 12, 2013

Jun. 12, 2013

Feb. 02, 2012

Aug. 13, 2012

Sep. 04, 2012

In Thousands, unless otherwise specified

ExactTarget

EdgeSpring

2Catalyze, Inc.

Buddy Media, Inc.

GoInstant, Inc.

Developed Technology

Business Acquisition [Line Items]

Cash, cash equivalents and marketable securities

$91,549

Current assets

35,609

Current and noncurrent tangible assets

4,462

758

473

Accounts receivable

63,320

Other current assets

20,355

Customer contract asset, current and noncurrent

205,033

Property and equipment

2,800

64,782

Other noncurrent assets

4,379

3,424

Current and noncurrent liabilities

-666

-16,437

Intangible assets

14,600

4,100

706,064

307,200

32,300

31,030

5,970

4,970

78,340

65,210

6,560

Deferred revenue

-3,281

Goodwill

3,500,823

1,529,378

785,381

1,848,653

107,165

45,579

640,534

45,295

Accounts payable, accrued expenses and other liabilities

-65,636

Deferred revenue, current and noncurrent

-46,615

Customer liability, current and noncurrent

-144,792

Other liabilities, noncurrent

-3,104

Deferred tax liability

-4,400

-1,000

-159,462

-9,539

-1,671

-2,436

-1,771

Net assets acquired

$2,584,526

$133,722

$50,636

$735,753

$50,557

Identifiable_Intangible_Assets

Identifiable Intangible Assets Acquired and Estimated Useful Lives as of Date of Acquisition (Detail) (USD $)

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2014

Jan. 31, 2013

Jun. 12, 2013

Jul. 12, 2013

Feb. 02, 2012

Aug. 13, 2012

In Thousands, unless otherwise specified

Minimum

Maximum

EdgeSpring

ExactTarget

2Catalyze, Inc.

Buddy Media, Inc.

Developed Technology

Customer Relationships

Trade Names and Trademark

Developed Technology

Customer Relationships

Trade Names and Trademark

Other Purchased Intangible Assets

Developed Technology

Customer Relationships

Developed Technology

Customer Relationships

Trade Names and Trademark

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Indefinite-lived Intangible Assets by Major Class [Line Items]

Total intangible assets subject to amortization

$14,600

$4,100

$32,300

$31,030

$560

$710

$706,064

$307,200

$362,200

$29,400

$7,264

$5,970

$4,970

$1,000

$78,340

$65,210

$11,030

$2,100

Finite-Lived Intangible Assets, Useful Life

'3 years

'1 year

'5 years

'3 years

'5 years

'6 years

'5 years

'4 years

'7 years

'6 years

'8 years

'10 years

'3 years

'4 years

'3 years

'1 year

'5 years

Revenue_and_Earnings_of_Acquir

Revenue and Earnings of Acquired Included in Condensed Consolidated Statement of Operations (Detail) (ExactTarget, USD $)	7 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014
ExactTarget	'
Business Acquisition [Line Items]	'
Total revenues	$194,008
Loss	($152,948)

Pro_Forma_Financial_Informatio

Pro Forma Financial Information (Detail) (ExactTarget, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Jan. 31, 2012
ExactTarget	'	'
Business Acquisition [Line Items]	'	'
Total revenues	$4,267,166	$3,279,421
Loss	($364,659)	($346,636)

Schedule_of_Fair_Value_of_Cons1

Schedule of Fair Value of Consideration Transferred (Parenthetical) (Detail) (Common Stock)	0 Months Ended
	Jun. 12, 2013	Aug. 13, 2012
	EdgeSpring	Buddy Media, Inc.
Business Acquisition [Line Items]	'	'
Fair value of equity interests issued as consideration, shares	1,850,258	5,571,096

Business_Combinations_Addition1

Business Combinations - Additional Information1 (Detail) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2014

Jan. 31, 2013

Feb. 02, 2012

Jan. 31, 2014

Jan. 31, 2013

Feb. 02, 2012

Aug. 13, 2012

Jan. 31, 2014

Jan. 31, 2013

Aug. 13, 2012

Sep. 30, 2012

Sep. 04, 2012

Jan. 31, 2014

Jan. 31, 2013

Sep. 30, 2012

Sep. 04, 2012

Jan. 31, 2014

Jan. 31, 2013

Entity

Minimum

Maximum

2Catalyze, Inc.

Buddy Media, Inc.

GoInstant, Inc.

Other Business Combinations

Developed Technology

Business Acquisition [Line Items]

Business acquisition date

1-Feb-12

13-Aug-12

4-Sep-12

Fair value of consideration transferred

$50,636,000

$735,753,000

$50,557,000

Unvested options assumed with a fair value

2,200,000

6,200,000

Total consideration allocated to the purchase consideration

500,000

36,100,000

1,300,000

Total consideration allocated to future services

1,700,000

31,300,000

4,900,000

Closing share price

$60.53

$36.29

Share conversion ratio

0.044

0.584

0.344

Fair value of unvested options and restricted stock-based awards assumed

67,400,000

Finite-Lived Intangible Assets, Useful Life

'3 years

'1 year

'5 years

'3 years

'5 years

'3 years

Number of business acquired

Total purchase price paid in cash, net of cash acquired

2,617,302,000

579,745,000

422,699,000

50,166,000

497,500,000

49,221,000

31,700,000

15,100,000

Total intangible assets subject to amortization

14,600,000

4,100,000

5,970,000

4,970,000

78,340,000

65,210,000

6,560,000

Purchase Price allocation to Goodwill

20,646,000

12,410,000

45,579,000

640,534,000

45,295,000

Net tangible liabilities

300,000

Deferred tax liabilities

4,400,000

1,000,000

1,671,000

2,436,000

1,771,000

Impairment of goodwill

Schedule_of_Goodwill_Detail

Schedule of Goodwill (Detail) (USD $)

12 Months Ended

In Thousands, unless otherwise specified

Jan. 31, 2014

Jan. 31, 2013

Feb. 02, 2012

Jan. 31, 2013

Aug. 13, 2012

Jan. 31, 2013

Sep. 04, 2012

Jan. 31, 2014

Jun. 12, 2013

Jan. 31, 2014

Jul. 12, 2013

2Catalyze, Inc.

Buddy Media, Inc.

GoInstant, Inc.

EdgeSpring

ExactTarget

Goodwill [Line Items]

Goodwill, beginning balance

$1,529,378

$785,381

$45,579

$640,534

$45,295

$107,165

$1,848,653

Other acquisitions

20,646

12,410

45,579

640,534

45,295

107,165

1,848,653

Finalization of acquisition date fair values

-5,019

179

Goodwill, ending balance

$3,500,823

$1,529,378

$45,579

$640,534

$45,295

$107,165

$1,848,653

Acquired_Intangible_Asset_Othe

Acquired Intangible Asset - Other Acquisitions (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Net Book Value	$770,841	'
Net Book Value	770,841	'
Other Business Combinations	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Fair Value	1,118,960	365,380
Accumulated Amortization	-348,119	-201,613
Net Book Value	770,841	163,767
Gross Fair Value	1,118,960	365,380
Accumulated Amortization	-348,119	-201,613
Net Book Value	770,841	163,767
Weighted Average Remaining Useful Life	'6 years	'2 years 10 months 24 days
Other Business Combinations \| Developed Technology	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Fair Value	659,770	310,582
Accumulated Amortization	-281,766	-172,823
Net Book Value	378,004	137,759
Gross Fair Value	659,770	310,582
Accumulated Amortization	-281,766	-172,823
Net Book Value	378,004	137,759
Weighted Average Remaining Useful Life	'4 years 10 months 24 days	'2 years 8 months 12 days
Other Business Combinations \| Customer Relationships	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Fair Value	409,135	42,775
Accumulated Amortization	-53,669	-21,599
Net Book Value	355,466	21,176
Gross Fair Value	409,135	42,775
Accumulated Amortization	-53,669	-21,599
Net Book Value	355,466	21,176
Weighted Average Remaining Useful Life	'7 years	'3 years 9 months 18 days
Other Business Combinations \| Trade Names and Trademark	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Fair Value	38,930	8,820
Accumulated Amortization	-8,721	-4,930
Net Book Value	30,209	3,890
Gross Fair Value	38,930	8,820
Accumulated Amortization	-8,721	-4,930
Net Book Value	30,209	3,890
Weighted Average Remaining Useful Life	'9 years	'2 years 9 months 18 days
Other Business Combinations \| Territory Rights and Other	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Fair Value	11,125	'
Accumulated Amortization	-3,963	'
Net Book Value	7,162	'
Gross Fair Value	11,125	'
Accumulated Amortization	-3,963	'
Net Book Value	7,162	'
Weighted Average Remaining Useful Life	'3 years 9 months 18 days	'
Other Business Combinations \| Territory Rights	'	'
Acquired Finite-Lived Intangible Assets [Line Items]	'	'
Gross Fair Value	'	3,203
Accumulated Amortization	'	-2,261
Net Book Value	'	942
Gross Fair Value	'	3,203
Accumulated Amortization	'	-2,261
Net Book Value	'	$942
Weighted Average Remaining Useful Life	'	'2 years 4 months 24 days

Expected_Future_Amortization_E

Expected Future Amortization Expense of Purchased Intangible Assets (Detail) (USD $)	Jan. 31, 2014
In Thousands, unless otherwise specified	Jan. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Fiscal 2015	$148,889
Fiscal 2016	133,742
Fiscal 2017	126,056
Fiscal 2018	115,061
Fiscal 2019	101,453
Thereafter	145,640
Net Book Value	$770,841

Summary_of_Convertible_Senior_

Summary of Convertible Senior Notes (Detail) (USD $)	Jan. 31, 2014		Jan. 31, 2013	Jan. 31, 2010	Jan. 31, 2014		Mar. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified	0.75% Convertible Senior Notes due January 15, 2015		0.75% Convertible Senior Notes due January 15, 2015	0.75% Convertible Senior Notes due January 15, 2015	0.25% Convertible Senior Notes due April 1, 2018		0.25% Convertible Senior Notes due April 1, 2018	0.25% Convertible Senior Notes due April 1, 2018
Debt Conversion [Line Items]	'		'	'	'		'	'
Convertible Senior Notes, Par Value	$568,864		'	$575,000	$1,150,000		$1,150,000	'
Convertible Senior Notes, Equity Component Recorded at Issuance	125,530	[1]	'	'	122,421	[2]	'	'
Convertible Senior Notes, Liability Component of Par Value	$542,159		$521,278	'	$1,046,930		'	$0

[1]	This amount represents the equity component recorded at the initial issuance of the 0.75% convertible senior notes. As of January 31, 2014, $26.7 million was reclassified as temporary equity on the consolidated balance sheet as these notes are convertible.
[2]	This amount represents the equity component recorded at the initial issuance of the 0.25% convertible senior notes.

Summary_of_Convertible_Senior_1

Summary of Convertible Senior Notes (Parenthetical) (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2010	Jan. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	0.75% Convertible Senior Notes due January 15, 2015	0.75% Convertible Senior Notes due January 15, 2015	0.25% Convertible Senior Notes due April 1, 2018	0.25% Convertible Senior Notes due April 1, 2018
Debt Conversion [Line Items]	'	'	'	'	'	'
Contractual interest rate	'	'	0.75%	0.75%	0.25%	0.25%
Convertible senior notes, maturity date	'	'	15-Jan-15	'	1-Apr-18	'
Temporary equity	$26,705	$53,612	'	'	'	'

Convertible_Senior_Notes_and_T2

Convertible Senior Notes and Term Loan - Additional Information (Detail) (USD $)

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2014

Jan. 31, 2010

Jan. 31, 2014

Mar. 31, 2013

Jan. 31, 2010

Jan. 31, 2014

Jul. 12, 2013

Jan. 31, 2014

Jul. 12, 2013

0.75% Warrants

0.25% Warrants

0.75% Convertible Senior Notes due January 15, 2015

0.25% Convertible Senior Notes due April 1, 2018

0.75% Note Hedges

Term Loan

Minimum

Maximum

Base Rate

Adjusted LIBOR

Base Rate

Adjusted LIBOR

Debt Instrument [Line Items]

Convertible notes, par value

$568,864,000

$575,000,000

$1,150,000,000

Contractual interest rate

0.75%

0.25%

0.75%

0.25%

Debt instrument, maturity date

15-Jan-15

1-Apr-18

11-Jul-16

Number of days out of 30 that common stock price exceeded conversion price (in days)

Threshold consecutive trading days

'30 days

Threshold percentage of conversion price

130.00%

Percentage of conversion rate

98.00%

Deferred tax liability

51,100,000

Estimated fair value of Company's Senior Notes

1,600,000,000

1,300,000,000

Closing prices of Company's common stock

$60.53

Excess of if-converted value over principal amount

1,000,000,000

Convertible notes payable

542,159,000

521,278,000

280,000,000

Deferred tax asset

51,400,000

Term loan outstanding

300,000,000

Term loan basis spread on variable rate

0.50%

1.50%

1.00%

2.00%

Term loan payable in quarterly installments

7,500,000

Percentage of equity interest of domestic subsidiaries pledged as collateral

100.00%

Percentage of equity interest of foreign subsidiaries pledged as collateral

65.00%

Weighted average interest rate on Term Loan

2.00%

Current portion outstanding under the Term Loan

30,000,000

Term Loan, noncurrent outstanding

255,000,000

Term Loan, principal payment during fiscal 2015

30,000,000

Term Loan, principal payment during fiscal 2016

30,000,000

Term Loan, principal payment during fiscal 2017

$235,000,000

Schedule_of_Conversion_of_Seni

Schedule of Conversion of Senior Notes to Common Stock (Detail) (USD $)	12 Months Ended
	Jan. 31, 2014
0.75% Convertible Senior Notes due January 15, 2015	'
Debt Instrument [Line Items]	'
Senior Notes, Conversion Rate per $1,000 Par Value	46.8588
Senior Notes, Initial Conversion Price per Share	$21.34
Senior Notes, Convertible Date	15-Oct-14
0.25% Convertible Senior Notes due April 1, 2018	'
Debt Instrument [Line Items]	'
Senior Notes, Conversion Rate per $1,000 Par Value	15.0512
Senior Notes, Initial Conversion Price per Share	$66.44
Senior Notes, Convertible Date	1-Jan-18

Schedule_of_Convertible_Senior

Schedule of Convertible Senior Notes (Detail) (USD $)	Jan. 31, 2014		Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014		Jan. 31, 2013
Debt Instrument [Line Items]	'		'
Net carrying amount	$1,589,089		$521,278
0.75% Convertible Senior Notes due January 15, 2015	'		'
Debt Instrument [Line Items]	'		'
Principal	568,864	[1]	574,890	[1]
Less: debt discount, net	-26,705	[2]	-53,612	[2]
0.25% Convertible Senior Notes due April 1, 2018	'		'
Debt Instrument [Line Items]	'		'
Principal	1,150,000	[1]	0	[1]
Less: debt discount, net	($103,070)	[3]	$0	[3]

[1]	The effective interest rates of the 0.75% Senior Notes and 0.25% Senior Notes are 5.86% and 2.53%, respectively. These interest rates were based on the interest rates of a similar liability at the time of issuance that did not have an associated convertible feature.
[2]	Included in the consolidated balance sheets within Convertible 0.75% Senior Notes (which is classified as a current liability, as these notes were convertible) and is amortized over the life of the 0.75% Senior Notes using the effective interest rate method.
[3]	Included in the consolidated balance sheets within Convertible 0.25% Senior Notes (which is classified as a noncurrent liability) and is amortized over the life of the 0.25% Senior Notes using the effective interest rate method.

Schedule_of_Convertible_Senior1

Schedule of Convertible Senior Notes (Parenthetical) (Detail)	Jan. 31, 2014	Jan. 31, 2014	Jan. 31, 2014	Jan. 31, 2010	Jan. 31, 2014	Mar. 31, 2013
	Current	Non Current	0.75% Convertible Senior Notes due January 15, 2015	0.75% Convertible Senior Notes due January 15, 2015	0.25% Convertible Senior Notes due April 1, 2018	0.25% Convertible Senior Notes due April 1, 2018
Debt Instrument [Line Items]	'	'	'	'	'	'
Effective interest rates of Senior Notes	'	'	5.86%	'	2.53%	'
Interest percentage of Convertible senior notes	0.75%	0.25%	0.75%	0.75%	0.25%	0.25%

Summary_of_Hedge_Notes_Detail

Summary of Hedge Notes (Detail) (USD $)	1 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2010	Mar. 31, 2013
	0.75% Note Hedges	0.25% Note Hedges
Derivatives, Fair Value [Line Items]	'	'
Note Hedges, Purchase	$126,500	$153,800
Note Hedges, Shares	26,943,812	17,308,880

Summary_of_Hedge_Notes_Parenth

Summary of Hedge Notes (Parenthetical) (Detail)	Jan. 31, 2014	Jan. 31, 2010	Jan. 31, 2014	Mar. 31, 2013
Summary of Hedge Notes (Parenthetical) (Detail)	0.75% Convertible Senior Notes due January 15, 2015	0.75% Convertible Senior Notes due January 15, 2015	0.25% Convertible Senior Notes due April 1, 2018	0.25% Convertible Senior Notes due April 1, 2018
Derivatives, Fair Value [Line Items]	'	'	'	'
Note, Interest Rate	0.75%	0.75%	0.25%	0.25%

Components_of_Warrants_Detail

Components of Warrants (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Class of Warrant or Right [Line Items]	'	'	'
Warrants, Proceeds	$84,800	$0	$0
Warrants, Shares	44,252,692	'	'
0.75% Warrants	'	'	'
Class of Warrant or Right [Line Items]	'	'	'
Warrants, Proceeds	59,300	'	'
Warrants, Shares	26,943,812	'	'
Warrants, Strike Price	29.88	'	'
0.25% Warrants	'	'	'
Class of Warrant or Right [Line Items]	'	'	'
Warrants, Proceeds	$84,800	'	'
Warrants, Shares	17,308,880	'	'
Warrants, Strike Price	90.4	'	'

Schedule_of_Interest_Expense_D

Schedule of Interest Expense (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Debt Disclosure [Abstract]	'	'	'
Contractual interest expense	$10,195	$4,313	$4,312
Amortization of debt issuance costs	4,470	1,324	1,324
Amortization of debt discount	46,942	25,131	23,720
Debt Instrument, Interest Expense, Total	$61,607	$30,768	$29,356

Schedule_of_Prepaid_Expenses_a

Schedule of Prepaid Expenses and Other Current Assets (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]	'	'
Deferred income taxes, net	$49,279	$7,321
Prepaid income taxes	23,571	21,180
Customer contract asset	77,368	0
Prepaid expenses and other current assets	158,962	104,813
Total prepaid expenses and other current assets	$309,180	$133,314

Schedule_of_Capitalized_Softwa

Schedule of Capitalized Software Costs (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Property, Plant and Equipment [Line Items]	'	'
Capitalized software costs	$481,917	$207,323
Capitalized Internal-Use Software	'	'
Property, Plant and Equipment [Line Items]	'	'
Capitalized software costs	72,915	59,647
Acquired Developed Technology	'	'
Property, Plant and Equipment [Line Items]	'	'
Capitalized software costs	$409,002	$147,676

Schedule_of_Capitalized_Softwa1

Schedule of Capitalized Software Costs (Parenthetical) (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Capitalized Internal-Use Software	'	'
Property, Plant and Equipment [Line Items]	'	'
Accumulated amortization on capitalized software	$101,687	$72,448
Acquired Developed Technology	'	'
Property, Plant and Equipment [Line Items]	'	'
Accumulated amortization on capitalized software	$294,628	$179,906

Other_Balance_Sheet_Accounts_A

Other Balance Sheet Accounts - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'	'
Capital lease agreement, contractual term	'6 years	'	'
Capital lease agreement period	'9 years	'	'
Capital lease agreement, renewal period	'3 years	'	'
Purchased Intangible Assets	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of acquired intangible assets	$37.60	$10.90	$8
Acquired Intellectual Property	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization of acquired intangible assets	4.2	3.9	2.4
Capitalized Internal-Use Software	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	29.2	22.1	15.8
Capitalized stock-based compensation	3.5	3.4	2.4
Acquired Developed Technology	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	$114.70	$80	$62.10

Schedule_of_Other_Assets_Detai

Schedule of Other Assets (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Finite-Lived Intangible Assets [Line Items]	'	'
Deferred income taxes, noncurrent, net	$9,691	$19,212
Long-term deposits	17,970	13,422
Acquired intangible assets, net of accumulated amortization	770,841	'
Strategic investments	92,489	51,685
Other	47,082	21,415
Other assets, net	613,490	168,960
Purchased Intangible Assets	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Acquired intangible assets, net of accumulated amortization	416,119	49,354
Acquired Intellectual Property	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Acquired intangible assets, net of accumulated amortization	11,957	13,872
Customer Contract Asset	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Customer contract asset	$18,182	$0

Schedule_of_Other_Assets_Paren

Schedule of Other Assets (Parenthetical) (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Purchased Intangible Assets	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Accumulated amortization	$66,399	$28,790
Acquired Intellectual Property	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Accumulated amortization	$11,304	$7,074

Schedule_of_Accrued_Expenses_a

Schedule of Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Payables And Accruals [Abstract]	'	'
Accounts payable	$64,988	$14,535
Accrued compensation	397,002	311,595
Accrued other liabilities	235,543	138,165
Accrued income and other taxes payable	153,026	120,341
Accrued professional costs	15,864	10,064
Customer liability, current	53,957	0
Accrued rent	13,944	3,006
Accrued expenses and other current liabilities	$934,324	$597,706

Schedule_of_Other_Noncurrent_L

Schedule of Other Noncurrent Liabilities (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Payables And Accruals [Abstract]	'	'
Deferred income taxes and income taxes payable	$108,760	$49,074
Customer liability, noncurrent	13,953	0
Financing obligation, building in progress - leased facility	40,171	0
Long-term lease liabilities and other	594,303	126,658
Other noncurrent liabilities	$757,187	$175,732

Stockholders_Equity_Additional

Stockholders Equity - Additional Information (Detail) (USD $)

0 Months Ended

7 Months Ended

12 Months Ended

Jun. 06, 2013

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Feb. 02, 2013

Jan. 31, 2014

Feb. 02, 2013

Jan. 31, 2014

Jun. 06, 2013

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Stock Available For Future Grant Under The 2004 Equity Incentive Plan

Stock Available for Future Grant Under 2004 Employee Stock Purchase Plan

2013 Equity Incentive Plan

Stock Available for Future Grant Under 2004 Outside Directors Stock Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Increase In Options Authorized Under 2004 Equity Incentive Plan

14,000,000

Increase In Options Authorized Under 2004 Employee stock purchase plan

4,000,000

Common stock for future issuance

203,442,180

48,000,000

Common stock available for grant

21,900,000

55,852,536

11,759,740

6,114,165

55,626,162

Common stock for future issuance expiration date

6-Jun-13

Amount withheld on behalf of employees for future purchases

$23,900,000

Offering period

'12 months

Employee Stock Purchase Plan, shares purchased

2,900,000

3,000,000

Employee Stock Purchase Plan, purchase amount

92,500,000

69,100,000

Prior contractual life of stock options (in years)

Contractual life of stock options (in years)

Total intrinsic value of the options exercised during the period

292,300,000

506,900,000

224,900,000

Weighted-average remaining contractual life of vested and expected to vest options (in years)

'3 years 9 months 18 days

Options vested

10,921,637

Weighted average exercise price vested

$26.45

Weighted-average contractual life of vested and expected to vest options (in years)

'2 years 3 months 18 days

Aggregate intrinsic value

372,249,000

Weighted-average exercise price

$0.00

Restricted stock units, vesting period (in years)

Weighted-average grant date fair value of the restricted stock units issued

$46.99

$37.71

$30.47

Shares of common stock received under the plan

108,800

102,400

147,200

Expense related to awards at the time of issuance

$4,500,000

$3,800,000

$4,900,000

Preferred stock, shares authorized

5,000,000

Preferred stock, shares outstanding

Stock_Activity_Detail

Stock Activity (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2014	Jun. 06, 2013
Shares available for grant	'	'
Shares Available for Grant, Balance as of January 31, 2013	11,759,740	21,900,000
Shares Available for Grant, Options granted under all plans	-10,866,107	'
Shares Available for Grant, Exercised	0	'
Shares Available for Grant, Cancelled	2,312,522	'
Shares Available for Grant, Balance as of January 31, 2014	55,852,536	21,900,000
Outstanding Stock Options	'	'
Outstanding Stock Options, Balance as of January 31, 2013	29,983,292	'
Outstanding Stock Options	10,866,107	'
Outstanding Stock Options, Exercised	-9,932,832	'
Outstanding Stock Options, Cancelled	-2,312,522	'
Outstanding Stock Options, Balance as of January 31, 2014	28,604,045	'
Outstanding Stock Options, Vested or expected to vest	27,258,499	'
Outstanding Stock Options, Exercisable as of January 31, 2014	10,921,637	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Balance as of January 31, 2013	$26.60	'
Weighted- Average Exercise Price, Options	$41.08	'
Weighted- Average Exercise Price, Exercised	$19.25	'
Weighted- Average Exercise Price, Cancelled	$31.37	'
Weighted- Average Exercise Price, Balance as of January 31, 2013	$34.26	'
Weighted- Average Exercise Price, Vested or expected to vest	$33.81	'
Weighted- Average Exercise Price, Exercisable as of January 31, 2014	$26.45	'
Aggregate Intrinsic Value	'	'
Weighted- Average Exercise Price, Balance as of January 31, 2014	$751,314	'
Weighted- Average Exercise Price, Vested or expected to vest	728,393	'
Weighted- Average Exercise Price, Exercisable as of January 31, 2014	$372,249	'
Restricted Stock Activity	'	'
Shares available for grant	'	'
Shares Available for Grant, Restricted stock activity	-14,792,960	'
Outstanding Stock Options	'	'
Outstanding Stock Options	'	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	'	'
Stock Grants To Board And Advisory Board Members	'	'
Shares available for grant	'	'
Shares Available for Grant, Stock grants to board and advisory board members	-210,320	'
Outstanding Stock Options	'	'
Outstanding Stock Options	'	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	'	'
2004 Equity Incentive Plan	'	'
Shares available for grant	'	'
Shares Available for Grant, Increase in shares authorized: 2004 Equity Incentive Plan	14,000,000	'
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	76,443,240	'
Shares Available for Grant, Balance as of January 31, 2014	55,626,162	'
Outstanding Stock Options	'	'
Outstanding Stock Options	0	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	$0	'
2010 EdgeSpring Plan	'	'
Shares available for grant	'	'
Shares Available for Grant, Increase in shares authorized	124,859	'
Outstanding Stock Options	'	'
Outstanding Stock Options	0	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	$0	'
2004 ExactTarget Plan	'	'
Shares available for grant	'	'
Shares Available for Grant, Increase in shares authorized	136,986	'
Outstanding Stock Options	'	'
Outstanding Stock Options	0	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	$0	'
2008 ExactTarget Plan	'	'
Shares available for grant	'	'
Shares Available for Grant, Increase in shares authorized	3,202,185	'
Outstanding Stock Options	'	'
Outstanding Stock Options	0	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	$0	'
1999 Plan	'	'
Shares available for grant	'	'
Shares Available for Grant, Plan shares expired	-26,257,609	'
Outstanding Stock Options	'	'
Outstanding Stock Options	0	'
Options Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Options	$0	'

Stock_Options_Outstanding_Deta

Stock Options Outstanding (Detail) (USD $)	12 Months Ended
Stock Options Outstanding (Detail) (USD $)	Jan. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Options, Number Outstanding	28,604,045
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'3 years 10 months 24 days
Weighted- Average Exercise Price, Options Outstanding	$34.26
Options Exercisable, Number of Shares	10,921,637
Options Exercisable, Weighted- Average Exercise Price	$26.45
Range of Exercise Prices $0.26 to $17.06	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$0.26
Range of Exercise Prices, Maximum	$17.06
Options, Number Outstanding	4,142,029
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'2 years 3 months 18 days
Weighted- Average Exercise Price, Options Outstanding	$10.93
Options Exercisable, Number of Shares	3,400,198
Options Exercisable, Weighted- Average Exercise Price	$11.56
Range of Exercise Prices $17.83 to $27.06	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$17.83
Range of Exercise Prices, Maximum	$27.06
Options, Number Outstanding	4,952,072
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'3 years 10 months 24 days
Weighted- Average Exercise Price, Options Outstanding	$25.61
Options Exercisable, Number of Shares	2,022,376
Options Exercisable, Weighted- Average Exercise Price	$25.97
Range of Exercise Prices $27.56 to $35.07	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$27.56
Range of Exercise Prices, Maximum	$35.07
Options, Number Outstanding	2,016,954
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'3 years 8 months 12 days
Weighted- Average Exercise Price, Options Outstanding	$31.54
Options Exercisable, Number of Shares	754,568
Options Exercisable, Weighted- Average Exercise Price	$31.94
Range of Exercise Prices $35.63	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$35.63
Options, Number Outstanding	4,424,751
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'1 year 9 months 18 days
Weighted- Average Exercise Price, Options Outstanding	$35.63
Options Exercisable, Number of Shares	3,129,209
Options Exercisable, Weighted- Average Exercise Price	$35.63
Range of Exercise Prices $35.87 to $39.09	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$35.87
Range of Exercise Prices, Maximum	$39.09
Options, Number Outstanding	6,261,008
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'3 years 7 months 6 days
Weighted- Average Exercise Price, Options Outstanding	$38.02
Options Exercisable, Number of Shares	1,588,536
Options Exercisable, Weighted- Average Exercise Price	$37.96
Range of Exercise Prices $40.19 to $52.14	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$40.19
Range of Exercise Prices, Maximum	$52.14
Options, Number Outstanding	898,060
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'5 years 8 months 12 days
Weighted- Average Exercise Price, Options Outstanding	$42.90
Options Exercisable, Number of Shares	26,750
Options Exercisable, Weighted- Average Exercise Price	$42.11
Range of Exercise Prices $52.30 to $59.37	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Range of Exercise Prices, Minimum	$52.30
Range of Exercise Prices, Maximum	$59.37
Options, Number Outstanding	5,909,171
Weighted- Average Remaining Contractual Life (Years), Options Outstanding	'6 years 9 months 18 days
Weighted- Average Exercise Price, Options Outstanding	$52.49
Options Exercisable, Number of Shares	0
Options Exercisable, Weighted- Average Exercise Price	$0

Schedule_of_Restricted_Stock_A

Schedule of Restricted Stock Activity (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Restricted Stock Outstanding	'	'
Ending Balance	24,653,578	'
Restricted Stock Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance as of January 31, 2013	$0.00	'
Restricted Stock Activity	'	'
Restricted Stock Outstanding	'	'
Balance as of January 31, 2013, Outstanding	26,782,620	19,849,052
Granted, Outstanding	10,884,991	16,283,752
Cancelled, Outstanding	-3,616,383	-2,471,624
Vested and converted to shares, Outstanding	-9,397,650	-6,878,560
Ending Balance	24,653,578	26,782,620
Expected to vest, Outstanding	21,442,620	'
Restricted Stock Outstanding Weighted-Average Exercise Price	'	'
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance as of January 31, 2012	$0.00	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Granted	$0.00	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Cancelled	$0.00	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Vested and converted to shares	$0.00	$0.00
Weighted- Average Exercise Price, Restricted Stock Outstanding, Balance as of January 31, 2013	$0.00	$0.00
Restricted Stock Outstanding Aggregate Intrinsic Value	'	'
Aggregate Intrinsic Value, Ending Balance	$1,492,281	'
Aggregate Intrinsic Value, Expected to vest	$1,297,922	'

Shares_of_Common_Stock_Availab

Shares of Common Stock Available for Future Issuance under Stock Option Plans (Detail)	12 Months Ended
	Jan. 31, 2014	Jun. 06, 2013	Jan. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Options outstanding	28,604,045	'	29,983,292
Restricted stock awards and units outstanding	24,653,578	'	'
Stock available for future grant	55,852,536	21,900,000	11,759,740
Convertible senior notes	43,965,164	'	'
Warrants	44,252,692	'	'
Total shares available for future grant	203,442,180	'	'
2013 Equity Incentive Plan	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock available for future grant	55,626,162	'	'
Total shares available for future grant	'	48,000,000	'
Stock Available for Future Grant Under 2006 Inducement Equity Incentive Plan	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock available for future grant	226,374	'	'
Stock Available for Future Grant Under 2004 Employee Stock Purchase Plan	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock available for future grant	6,114,165	'	'

Domestic_and_Foreign_Component

Domestic and Foreign Components of Income (Loss) Before Provision (Benefit) for Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'
Domestic	($326,392)	($90,743)	($27,303)
Foreign	-31,543	-37,051	-6,014
Income (loss) before benefit (provision) for income taxes and noncontrolling interest	($357,935)	($127,794)	($33,317)

Provision_Benefit_for_Income_T

Provision Benefit for Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'
Current, Federal	($10,431)	$12,896	$9,344
Current, State	-245	3,021	4,346
Current, Foreign	39,784	30,261	15,709
Current, Total	29,108	46,178	29,399
Deferred, Federal	-128,798	72,656	-36,601
Deferred, State	-22,012	28,538	-10,603
Deferred, Foreign	-4,058	-4,721	-3,940
Deferred, Total	-154,868	96,473	-51,144
Provision (benefit) for income taxes	($125,760)	$142,651	($21,745)

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Income Taxes - Additional Information (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Stockholders Equity Note [Line Items]	'	'	'	'
Valuation allowance	($25,048,000)	$186,806,000	$0	'
Net tax benefits related to exercises of stock options and vesting of restricted stocks	8,000,000	7,200,000	1,600,000	'
Valuation allowance	12,500,000	'	'	'
Excess tax benefits included in net operating loss carryforwards but are not reflected in deferred tax assets	408,800,000	316,200,000	'	'
Income tax benefit recognized from stock compensation expense	147,800,000	113,900,000	76,000,000	'
Unrecognized tax benefits	102,275,000	75,144,000	51,971,000	27,462,000
Unrecognized tax benefits which would affect the effective tax rate	34,900,000	32,300,000	39,100,000	'
Accrued interest and penalties related to unrecognized tax benefits	600,000	300,000	600,000	'
Non-current income tax related to penalties and interest	3,300,000	1,700,000	1,400,000	'
Change in unrecognized tax benefits	0	'	'	'
Minimum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Percentage of tax benefit recognized	50.00%	'	'	'
Minimum Tax Credits	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforwards	700,000	'	'	'
Switzerland	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Income tax deductions, expiration dates	'2016	'	'	'
Singapore	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Income tax deductions, expiration dates	'2016	'	'	'
Federal	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Net operating loss carryforwards	1,800,000,000	'	'	'
Federal \| Minimum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Operating loss carryforwards, expiration date	'2021	'	'	'
Federal \| Maximum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2034	'	'	'
Federal \| Research And Development	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforwards	72,800,000	'	'	'
Federal \| Research And Development \| Minimum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2020	'	'	'
Federal \| Research And Development \| Maximum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2034	'	'	'
Foreign Country	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforwards	15,400,000	'	'	'
Foreign Country \| Minimum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2019	'	'	'
Foreign Country \| Maximum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2024	'	'	'
California	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Net operating loss carryforwards	794,600,000	'	'	'
California \| Research And Development \| Minimum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2015	'	'	'
California \| Research And Development \| Maximum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2034	'	'	'
State \| Research And Development	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforwards	68,100,000	'	'	'
State \| State Enterprise Zone	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2024	'	'	'
Tax credit carryforwards	9,500,000	'	'	'
Other States	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Net operating loss carryforwards	$600,000,000	'	'	'
Other States \| Minimum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2015	'	'	'
Other States \| Maximum	'	'	'	'
Stockholders Equity Note [Line Items]	'	'	'	'
Tax credit carryforward, expiration dates	'2034	'	'	'

Reconciliation_of_Statutory_Fe

Reconciliation of Statutory Federal Income Tax Rate to Provision (Benefit) for Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'
U.S. federal taxes at statutory rate	($125,277)	($44,729)	($11,661)
State, net of the federal benefit	-10,780	-969	-6
Foreign taxes in excess of the U.S. statutory rate	33,412	16,931	10,555
Change in valuation allowance	-25,048	186,806	0
Tax credits	-22,293	-17,670	-15,049
Non-deductible expenses	21,407	4,807	5,345
Tax expense/(benefit) from acquisitions	1,811	-3,568	-12,575
Other, net	1,008	1,043	1,646
Provision (benefit) for income taxes	($125,760)	$142,651	($21,745)

Significant_Components_Of_Defe

Significant Components Of Deferred Tax Assets and Liabilities (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Net operating loss carryforwards	$259,465	$62,603
Deferred stock compensation	82,840	69,593
Tax credits	107,381	75,812
Deferred rent expense	47,063	28,022
Accrued liabilities	79,235	63,257
Deferred revenue	8,522	30,441
Basis difference on investment	11,999	8,569
Financing obligation	63,673	0
Other	17,762	9,916
Total deferred tax assets	677,940	348,213
Less valuation allowance	-180,223	-192,682
Deferred tax assets, net of valuation allowance	497,717	155,531
Deferred commissions	-87,625	-72,470
Purchased intangibles	-259,409	-14,739
Unrealized gains on investments	-5,232	-2,768
Depreciation and amortization	-144,752	-41,832
Other	-3,599	-7,351
Total deferred tax liabilities	-500,617	-139,160
Net deferred tax assets	($2,900)	$16,371

Unrecognized_Tax_Benefits_Deta

Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'
Balance as of February 1,	$75,144	$51,971	$27,462
Tax positions taken in prior period, Gross increases	8,420	7,304	10,008
Tax positions taken in prior period, Gross decreases	-4,466	-4,460	-23
Tax position taken in current period, Gross increases	27,952	24,401	15,965
Settlements	0	-121	0
Lapse of statute of limitations	-5,205	-4,159	-1,143
Currency translation effect	430	208	-298
Balance as of January 31,	$102,275	$75,144	$51,971

Reconciliation_of_Denominator_

Reconciliation of Denominator Used in Calculation of Basic and Diluted Loss Per Share (Detail) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Jan. 31, 2014

Oct. 31, 2013

Jul. 31, 2013

Apr. 30, 2013

Jan. 31, 2013

Oct. 31, 2012

Jul. 31, 2012

Apr. 30, 2012

Jan. 31, 2014

Jan. 31, 2013

Jan. 31, 2012

Earnings Per Share [Abstract]

Net loss

($116,623)

($124,434)

$76,603

($67,721)

($20,844)

($220,297)

($9,829)

($19,475)

($232,175)

($270,445)

($11,572)

Weighted-average shares outstanding for basic loss per share

597,613

[1]

564,896

[1]

541,208

[1]

Convertible senior notes

Employee stock awards

Warrants

Adjusted weighted-average shares outstanding and assumed conversions for diluted loss per share

597,613

[1]

564,896

[1]

541,208

[1]

Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Shares_Excluded_from_Diluted_E

Shares Excluded from Diluted Earnings or Loss Per Share (Detail)	12 Months Ended
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Stock Awards	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Anti-dilutive securities excluded	19,664	30,068	30,240
Convertible Senior Notes	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Anti-dilutive securities excluded	43,965	26,940	26,940
Warrants	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Anti-dilutive securities excluded	44,253	26,944	26,944

Commitments_Additional_Informa

Commitments - Additional Information (Detail) (USD $)	12 Months Ended
Commitments - Additional Information (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Debt Instrument [Line Items]	'	'	'
Total operating lease commitment balance	$1,400,000,000	'	'
Rent expense	123,600,000	88,300,000	70,300,000
Facilities Space	'	'	'
Debt Instrument [Line Items]	'	'	'
Total operating lease commitment balance	1,300,000,000	'	'
Letter of Credit	'	'	'
Debt Instrument [Line Items]	'	'	'
Value of outstanding letters of credit	$55,400,000	'	'
Letters of credit expiration dates	'2030-12	'	'

Schedule_of_Future_Minimum_Lea

Schedule of Future Minimum Lease Payments under Non-Cancelable Operating and Capital Leases (Detail) (USD $)	Jan. 31, 2014
In Thousands, unless otherwise specified	Jan. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Future minimum lease payments under non-cancelable capital leases, Fiscal 2015	$77,455
Future minimum lease payments under non-cancelable capital leases, Fiscal 2016	72,193
Future minimum lease payments under non-cancelable capital leases, Fiscal 2017	73,845
Future minimum lease payments under non-cancelable capital leases, Fiscal 2018	83,369
Future minimum lease payments under non-cancelable capital leases, Fiscal 2019	99,643
Future minimum lease payments under non-cancelable capital leases, Thereafter	200,000
Future minimum lease payments under non-cancelable capital leases, Total	606,505
Less: amount representing interest	-88,260
Present value of capital lease obligations	518,245
Future minimum lease payments under non-cancelable operating leases, Fiscal 2015	196,514
Future minimum lease payments under non-cancelable operating leases, Fiscal 2016	189,757
Future minimum lease payments under non-cancelable operating leases, Fiscal 2017	160,521
Future minimum lease payments under non-cancelable operating leases, Fiscal 2018	129,733
Future minimum lease payments under non-cancelable operating leases, Fiscal 2019	119,027
Future minimum lease payments under non-cancelable operating leases, Thereafter	587,528
Future minimum lease payments under non-cancelable operating leases, Total	1,383,080
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Fiscal 2015	0	[1]
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Fiscal 2016	1,777	[1]
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Fiscal 2017	16,877	[1]
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Fiscal 2018	21,107	[1]
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Fiscal 2019	21,551	[1]
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Thereafter	274,512	[1]
Future minimum lease payments under non-cancelable financing obligation building in progress-leased facility, Total	$335,824	[1]

[1]	Total Financing Obligation, Building in Progress-Leased Facility noted above represents the total obligation on the lease agreement noted in Footnote 3, "Property and Equipment", and includes $40.2 million that was recorded to Financing obligation, building in progress-leased facility, which is included in Other noncurrent liabilities on the balance sheet.

Schedule_of_Future_Minimum_Lea1

Schedule of Future Minimum Lease Payments under Non-Cancelable Operating and Capital Leases (Parenthetical) (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'	'
Financing obligation, building in progress - leased facility	$40,171	$0

Employee_Benefit_Plan_Addition

Employee Benefit Plan - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Postemployment Benefits [Abstract]	'	'	'
Company contributions	$27.90	$22.10	$15.70

RelatedParty_Transactions_Addi

Related-Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended
	Jan. 31, 2014
Related Party Transactions [Abstract]	'
Value of resources donated to related parties	$997,000
Value of donated subscriptions to related parties	$15,100,000

Selected_Quarterly_Financial_D2

Selected Quarterly Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2014		Jan. 31, 2013		Jan. 31, 2012
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'		'		'
Revenues	$1,145,242	$1,076,034	$957,094	$892,633	$834,681	$788,398	$731,649	$695,467	$4,071,003		$3,050,195		$2,266,539
Gross profit	871,712	807,847	739,377	683,639	651,319	602,150	569,231	543,916	3,102,575		2,366,616		1,777,653
Loss from operations	-103,746	-97,931	-39,857	-44,540	-20,807	-54,188	-13,466	-22,249	-286,074		-110,710		-35,085
Net income (loss)	($116,623)	($124,434)	$76,603	($67,721)	($20,844)	($220,297)	($9,829)	($19,475)	($232,175)		($270,445)		($11,572)
Basic net income (loss) per share	($0.19)	($0.21)	$0.13	($0.12)	($0.04)	($0.39)	($0.02)	($0.04)	($0.39)	[1]	($0.48)	[1]	($0.02)	[1]
Diluted net income (loss) per share	($0.19)	($0.21)	$0.12	($0.12)	($0.04)	($0.39)	($0.02)	($0.04)	($0.39)	[1]	($0.48)	[1]	($0.02)	[1]

[1]	Prior period results have been adjusted to reflect the four-for-one stock split through a stock dividend which occurred in April 2013.

Selected_Quarterly_Financial_D3

Selected Quarterly Financial Data (Parenthetical) (Detail)	1 Months Ended	12 Months Ended
Selected Quarterly Financial Data (Parenthetical) (Detail)	Apr. 30, 2013	Jan. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'	'
Stock split	'Four-for-one	'On March 20, 2013, the Company's certificate of incorporation was amended to increase the number of authorized shares of common stock from 400.0 million to 1.6 billion in order to provide for a four-for-one stock split of the common stock effected in the form of a stock dividend.
Stock split ratio	4	'

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts (Detail) (Allowance for Doubtful Accounts, USD $)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Allowance for Doubtful Accounts	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Year	$1,853,000	$1,273,000	$1,711,000
Additions	7,963,000	6,350,000	4,174,000
Deductions Write-offs	5,047,000	5,770,000	4,612,000
Balance at End of Year	$4,769,000	$1,853,000	$1,273,000