Splunk (SPLK) 10-Q 8 Sep 21 2022 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jul. 31, 2021	Sep. 01, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 31, 2021
Document Transition Report	false
Entity File Number	001-35498
Entity Registrant Name	Splunk Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1106510
Entity Address, Address Line One	270 Brannan Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94107
City Area Code	415
Local Phone Number	848-8400
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	SPLK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		161,545,802
Entity Central Index Key	0001353283
Amendment Flag	false
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Current assets:
Cash and cash equivalents	$ 2,231,165	$ 1,771,064
Investments, current	267,035	87,847
Accounts receivable, net	882,436	1,114,199
Prepaid expenses and other current assets	171,261	162,939
Deferred commissions, current	100,774	136,331
Total current assets	3,652,671	3,272,380
Investments, non-current	36,889	13,728
Accounts receivable, non-current	194,630	347,202
Operating lease right-of-use assets	239,066	356,296
Property and equipment, net	132,841	182,780
Intangible assets, net	192,904	206,153
Goodwill	1,401,628	1,334,888
Deferred commissions, non-current	104,284	69,637
Other assets	91,411	85,422
Total assets	6,046,324	5,868,486
Current liabilities:
Accounts payable	45,789	9,319
Accrued compensation	302,156	281,986
Accrued expenses and other liabilities	240,994	202,959
Deferred revenue, current	954,070	1,030,484
Total current liabilities	1,543,009	1,524,748
Convertible senior notes, net	3,054,463	2,302,635
Operating lease liabilities	219,242	330,970
Deferred revenue, non-current	80,539	110,418
Other liabilities, non-current	14,406	5,710
Total non-current liabilities	3,368,650	2,749,733
Total liabilities	4,911,659	4,274,481
Commitments and contingencies (Note 3 and 4)
Stockholders' equity:
Common stock: $0.001 par value; 1,000,000,000 shares authorized; 163,400,853 shares issued and outstanding at July 31, 2021, and 163,147,139 shares issued and outstanding at January 31, 2021	165	163
Accumulated other comprehensive loss	(864)	(592)
Additional paid-in capital	4,689,282	4,063,885
Treasury stock, at cost: 1,652,247 shares at July 31, 2021, and 0 shares at January 31, 2021	(229,515)	0
Accumulated deficit	(3,324,403)	(2,469,451)
Total stockholders' equity	1,134,665	1,594,005
Total liabilities and stockholders' equity	$ 6,046,324	$ 5,868,486
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	163,400,853	163,147,139
Common stock, shares outstanding (in shares)	163,400,853	163,147,139
Treasury stock, shares (in shares)	1,652,247	0

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jul. 31, 2021	Jan. 31, 2021
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	163,400,853	163,147,139
Common stock, shares outstanding (in shares)	163,400,853	163,147,139
Treasury stock, shares (in shares)	1,652,247	0

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Revenues
Total revenues		$ 605,743	$ 491,658	$ 1,107,794	$ 925,735
Cost of revenues
Total cost of revenues	[1]	183,407	132,052	355,313	260,669
Gross profit		422,336	359,606	752,481	665,066
Operating expenses
Research and development	[1]	259,709	197,297	506,907	389,421
Sales and marketing	[1]	382,129	323,687	738,237	642,911
General and administrative	[1]	124,928	78,081	287,114	160,805
Total operating expenses	[1]	766,766	599,065	1,532,258	1,193,137
Operating loss		(344,430)	(239,459)	(779,777)	(528,071)
Interest and other income (expense), net
Interest income		507	3,581	886	10,056
Interest expense		(39,013)	(30,148)	(72,603)	(54,585)
Other income (expense), net		1,146	5,917	(77)	5,243
Total interest and other income (expense), net		(37,360)	(20,650)	(71,794)	(39,286)
Loss before income taxes		(381,790)	(260,109)	(851,571)	(567,357)
Income tax provision (benefit)		2,161	1,213	3,381	(456)
Net loss		$ (383,951)	$ (261,322)	$ (854,952)	$ (566,901)
Net loss per share:
Basic and diluted (in dollars per share)		$ (2.34)	$ (1.64)	$ (5.23)	$ (3.58)
Weighted-average shares outstanding:
Basic and diluted (in shares)		164,018	158,952	163,615	158,241
Cloud services
Revenues
Total revenues		$ 217,422	$ 125,870	$ 411,380	$ 238,022
Cost of revenues
Total cost of revenues	[1]	98,016	59,728	186,101	113,218
License
Revenues
Total revenues		219,600	176,814	362,881	325,199
Cost of revenues
Total cost of revenues	[1]	2,459	5,474	6,749	11,540
Maintenance and services
Revenues
Total revenues		168,721	188,974	333,533	362,514
Cost of revenues
Total cost of revenues	[1]	$ 82,932	$ 66,850	$ 162,463	$ 135,911
[1]	Amounts include stock-based compensation expense, as follows: Cost of revenues $ 21,865 $ 13,992 $ 39,379 $ 27,194 Research and development 81,001 66,284 158,047 134,853 Sales and marketing 64,436 50,741 119,622 107,215 General and administrative 37,478 23,856 70,149 44,429

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Stock-based compensation			$ 387,197	$ 313,691
Cost of revenues
Stock-based compensation	$ 21,865	$ 13,992	39,379	27,194
Research and development
Stock-based compensation	81,001	66,284	158,047	134,853
Sales and marketing
Stock-based compensation	64,436	50,741	119,622	107,215
General and administrative
Stock-based compensation	$ 37,478	$ 23,856	$ 70,149	$ 44,429

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Net loss	$ (383,951)	$ (261,322)	$ (854,952)	$ (566,901)
Other comprehensive income (loss):
Net unrealized gain (loss) on investments (net of tax)	(116)	(1,999)	(272)	686
Foreign currency translation adjustments	0	(783)	0	(104)
Total other comprehensive income (loss)	(116)	(2,782)	(272)	582
Comprehensive loss	$ (384,067)	$ (264,104)	$ (855,224)	$ (566,319)

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Cash flows from operating activities
Net loss	$ (854,952)	$ (566,901)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation and amortization	50,625	42,685
Amortization of deferred commissions	77,983	61,120
Amortization of investment premiums (accretion of discounts), net	432	(944)
Amortization of debt discount and issuance costs	57,784	44,738
Gain on extinguishment of convertible senior notes	0	(6,952)
Repurchase of convertible senior notes attributable to the accreted interest related to debt discount	0	(22,149)
Loss on lease termination	52,524	0
Non-cash operating lease costs	571	15,759
Stock-based compensation	387,197	313,691
Disposal of property and equipment	33	981
Deferred income taxes	(294)	(644)
Changes in operating assets and liabilities, net of acquisition
Accounts receivable, net	384,798	184,261
Prepaid expenses and other assets	(14,842)	12,493
Deferred commissions	(77,073)	(60,154)
Accounts payable	19,698	22,963
Accrued compensation	20,170	(61,378)
Accrued expenses and other liabilities	17,817	(1,294)
Deferred revenue	(107,731)	(102,307)
Net cash provided by (used in) operating activities	14,740	(124,032)
Cash flows from investing activities
Purchases of investments	(289,573)	(87,135)
Maturities of investments	87,766	497,725
Acquisition, net of cash acquired	(80,333)	0
Purchases of property and equipment	(4,363)	(25,816)
Capitalized software development costs	(5,148)	(7,133)
Other investment activities	(1,168)	(2,886)
Net cash provided by (used in) investing activities	(292,819)	374,755
Cash flows from financing activities
Proceeds from the exercise of stock options	1,174	2,671
Proceeds from employee stock purchase plan	48,246	44,214
Proceeds from the issuance of convertible senior notes, net of issuance costs	982,749	1,246,544
Purchase of capped calls	0	(137,379)
Partial repurchase of convertible senior notes	0	(668,929)
Repurchases of common stock	(192,208)	0
Taxes paid related to net share settlement of equity awards	(101,781)	(49,228)
Net cash provided by financing activities	738,180	437,893
Effect of exchange rate changes on cash and cash equivalents	0	626
Net increase in cash and cash equivalents	460,101	689,242
Cash and cash equivalents at beginning of period	1,771,064	778,653
Cash and cash equivalents at end of period	2,231,165	1,467,895
Supplemental disclosures
Cash paid for income taxes	4,488	6,267
Cash paid for interest	7,116	8,557
Non-cash investing and financing activities
Increase in accrued purchases of property and equipment	3,247	5,169
Equity consideration for acquisitions	939	0
Vesting of early exercised options	63	117
Costs related to issuance of convertible senior notes included in accrued expenses and other liabilities	1,034	1,053
Unsettled repurchases of common stock included in accrued expenses and other liabilities	$ 37,307	$ 0

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Additional paid-in capitalCapped Call	Treasury stock	Accumulated other comprehensive loss	Accumulated deficit
Balance, beginning of period at Jan. 31, 2020		$ 157	$ 3,566,055		$ 0	$ (5,312)	$ (1,561,471)
Vesting of restricted and performance stock units		2
Issuance of common stock upon ESPP purchase		1
Stock-based compensation			313,691
Capitalized software development costs			3,850
Issuance of common stock upon exercise of options			2,670
Fair value of replacement equity awards attributable to pre-acquisition service			0
Vesting of early exercised options	$ 117		117
Taxes paid related to net share settlement of equity awards			(49,228)
Issuance of common stock upon ESPP purchase			44,214
Equity component of convertible senior notes, net			342,062
Purchase of capped calls				$ (137,379)
Partial repurchase of convertible senior notes			(283,629)
Repurchases of common stock					0
Unrealized gain (loss) from investments (net of tax)						686
Net change in cumulative translation adjustments	(104)					(104)
Net loss	(566,901)						(566,901)
Balance, end of period at Jul. 31, 2020	1,669,481	160	3,802,423		0	(4,730)	(2,128,372)
Balance, beginning of period at Apr. 30, 2020		158	3,678,895		0	(1,948)	(1,867,050)
Vesting of restricted and performance stock units		1
Issuance of common stock upon ESPP purchase		1
Stock-based compensation			154,873
Capitalized software development costs			2,074
Issuance of common stock upon exercise of options			1,252
Fair value of replacement equity awards attributable to pre-acquisition service			0
Vesting of early exercised options			61
Taxes paid related to net share settlement of equity awards			0
Issuance of common stock upon ESPP purchase			44,214
Equity component of convertible senior notes, net			342,062
Purchase of capped calls				(137,379)
Partial repurchase of convertible senior notes			(283,629)
Repurchases of common stock					0
Unrealized gain (loss) from investments (net of tax)						(1,999)
Net change in cumulative translation adjustments	(783)					(783)
Net loss	(261,322)						(261,322)
Balance, end of period at Jul. 31, 2020	1,669,481	160	3,802,423		0	(4,730)	(2,128,372)
Balance, beginning of period at Jan. 31, 2021	1,594,005	163	4,063,885		0	(592)	(2,469,451)
Vesting of restricted and performance stock units		2
Issuance of common stock upon ESPP purchase		0
Stock-based compensation			387,197
Capitalized software development costs			1,890
Issuance of common stock upon exercise of options			1,174
Fair value of replacement equity awards attributable to pre-acquisition service			939
Vesting of early exercised options	63		63
Taxes paid related to net share settlement of equity awards			(101,783)
Issuance of common stock upon ESPP purchase			48,246
Equity component of convertible senior notes, net			287,671
Purchase of capped calls				0
Partial repurchase of convertible senior notes			0
Repurchases of common stock	(229,500)				(229,515)
Unrealized gain (loss) from investments (net of tax)						(272)
Net change in cumulative translation adjustments	0					0
Net loss	(854,952)						(854,952)
Balance, end of period at Jul. 31, 2021	1,134,665	165	4,689,282		(229,515)	(864)	(3,324,403)
Balance, beginning of period at Apr. 30, 2021		164	4,187,267		0	(748)	(2,940,452)
Vesting of restricted and performance stock units		1
Issuance of common stock upon ESPP purchase		0
Stock-based compensation			204,780
Capitalized software development costs			679
Issuance of common stock upon exercise of options			636
Fair value of replacement equity awards attributable to pre-acquisition service			939
Vesting of early exercised options			31
Taxes paid related to net share settlement of equity awards			(40,967)
Issuance of common stock upon ESPP purchase			48,246
Equity component of convertible senior notes, net			287,671
Purchase of capped calls				$ 0
Partial repurchase of convertible senior notes			0
Repurchases of common stock					(229,515)
Unrealized gain (loss) from investments (net of tax)						(116)
Net change in cumulative translation adjustments	0					0
Net loss	(383,951)						(383,951)
Balance, end of period at Jul. 31, 2021	$ 1,134,665	$ 165	$ 4,689,282		$ (229,515)	$ (864)	$ (3,324,403)

Description of the Business and

Description of the Business and Significant Accounting Policies	6 Months Ended
	Jul. 31, 2021
Accounting Policies [Abstract]
Description of the Business and Significant Accounting Policies	Description of the Business and Significant Accounting Policies Business Splunk Inc. (“we,” “us,” “our”) provides innovative cloud and software solutions that deliver and operationalize insights from the data generated by digital systems. Data is produced by nearly every software application and electronic device across an organization and contains a real-time record of various activities, such as business transactions, customer and user behavior, and security threats. This data is growing significantly as a direct result of the prevalence and importance of digital systems used by today’s organizations. Our solutions help users remove barriers between insights derived from this data and actions organizations take to thrive in an era of unprecedented digital transformation. We were incorporated in California in October 2003 and reincorporated in Delaware in May 2006. Fiscal Year Our fiscal year ends on January 31. References to fiscal 2022, for example, refer to the fiscal year ending January 31, 2022. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet data as of January 31, 2021 was derived from audited financial statements, but does not include all disclosures required by GAAP. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Annual Report on Form 10-K for the fiscal year ended January 31, 2021, filed with the SEC on March 31, 2021. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to state fairly the financial position, results of operations, comprehensive loss and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal 2022. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting periods covered by the financial statements and accompanying notes. In particular, we make estimates with respect to the stand-alone selling price for each distinct performance obligation included in customer contracts with multiple performance obligations, uncollectible accounts receivable, the assessment of the useful life and recoverability of long-lived assets (property and equipment, goodwill and identified intangibles), the period of benefit for deferred commissions, stock-based compensation expense, the fair value of the liability component of the convertible debt, the fair value of assets acquired and liabilities assumed for business combinations, income taxes, the discount rate used for operating leases, and contingencies. Actual results could differ from those estimates. COVID-19 The novel coronavirus (“COVID-19”) has created, and may continue to create, significant uncertainty in macroeconomic conditions. The full extent to which the COVID-19 pandemic will directly or indirectly impact the global economy, the lasting social effects, and impact on our business, results of operations, and financial condition will depend on future developments, such as the duration, spread, and severity and potential recurrence of the virus and its variants, COVID-19 vaccination rates and the availability of COVID-19 vaccines both globally and in the U.S., that are highly uncertain and cannot be accurately predicted. As of the date of issuance of these condensed consolidated financial statements, we are not aware of any specific event or circumstance that would require us to update our estimates, judgments or adjust the carrying value of our assets or liabilities. These estimates may change, as new events occur and additional information is obtained, and will be recognized in the condensed consolidated financial statements as soon as they become known. Actual results could differ from those estimates and any such differences may be material to our condensed consolidated financial statements. Segments We operate our business as one operating segment: the development and marketing of software solutions that enable our customers to gain real-time business insights by harnessing the value of their data. Our chief operating decision maker is our Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources. Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Splunk Inc. and its direct and indirect wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation. Foreign Currency The functional currency of our foreign subsidiaries is the U.S. dollar. Foreign currency transaction gains and losses are included in “Other income (expense), net” on our condensed consolidated statements of operations and were not material for the three and six months ended July 31, 2021 and 2020. Revenue Recognition We generate revenues in the form of cloud services fees, software license and related maintenance fees, and other service fees. Cloud services are provided on a subscription basis and give our customers access to our cloud solutions, which include related customer support. Licenses for on-premises software (“software”) are typically term licenses and provide the customer with a right to use the software. When a term license is purchased, maintenance is bundled with the license for the term of the license period. Typically, when purchasing a perpetual license, a customer also purchases one year of maintenance for which we charge a percentage of the license fee. Other services include training and professional services that are not integral to the functionality of the licenses or cloud services. Our contracts with customers often contain multiple performance obligations, which may include a combination of cloud services, software, related maintenance and support services, and professional services including training. We apply significant judgment in identifying and accounting for each performance obligation, as a result of evaluating the terms and conditions in contracts. For these contracts, we account for cloud services, software, maintenance and support, and other services as separate performance obligations as they are each distinct. Revenue is recognized when the performance obligations are satisfied. We satisfy our cloud service performance obligation over the associated contract term and recognize the associated revenue ratably over the term of the contract once access is provided to the customer, consistent with the pattern of benefit to the customer of such services. We satisfy our obligation and recognize revenue for software upon transfer of control of the software, which occurs at delivery of the license key to customers, or when the license term commences, if later. We satisfy our maintenance and support performance obligations and recognize revenue ratably over the maintenance and support term, consistent with the pattern of benefit to the customer of such services. Professional services and training are either provided on a time and material basis or over a contract term. We satisfy our professional services and training performance obligations and recognize the associated revenue as services are delivered. With respect to contracts that include customer acceptance provisions, we recognize revenue upon customer acceptance. Our policy is to record revenues net of any applicable sales tax, use, goods and services, value added, and excise taxes. Customers can purchase our products under different pricing options. Regardless of the pricing option selected, the consideration for our cloud services and license contracts is fixed and does not result in variable consideration. The transaction price is allocated to the separate performance obligations on a relative standalone selling price (“SSP”) basis. We determine the SSP based on an observable standalone selling price when it is available, as well as other factors, including the price charged to customers, our discounting practices, and our overall pricing objectives, while maximizing observable inputs. In situations where pricing is highly variable, we estimate the SSP using the residual approach. A receivable is recorded when we have an unconditional right to payment, either because we satisfied a performance obligation prior to receiving payment from the customer or we have a non-cancelable contract that has been invoiced in advance in accordance with our standard payment terms. Most of our multi-year cloud service and software contracts are invoiced annually. A receivable for multi-year cloud services is generally recorded upon invoicing. A receivable for multi-year software contracts is recorded upon delivery, whether or not invoiced, to the extent we have an unconditional right to receive payment in the future related to those licenses. The non-current portion of these receivables, primarily consisting of unbilled receivables from multi-year software contracts, is included in “Accounts receivable, non-current” on our condensed consolidated balance sheets. Payment terms and conditions vary by contract type, although our standard payment terms generally require payment within 30 to 60 days. In instances where the timing of revenue recognition differs from the timing of payment, we have determined our contracts do not generally include a significant financing component. The primary purpose of our invoicing terms is to provide customers with simplified and predictable ways of purchasing our products and services, not to receive financing from our customers or to provide customers with financing. Deferred revenue is recorded when we invoice a contract or deliver a license prior to recognizing revenue. It is comprised of balances related to maintenance, cloud services, training and professional services invoiced at the beginning of each service period, as well as licenses that we delivered prior to the license term commencing. Recently Adopted Accounting Standards We did not adopt any new accounting standards in the period ended July 31, 2021. Recently Issued Accounting Pronouncements Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements Accounting Standards Update (“ASU”) No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815 - 40) This ASU amends the guidance on convertible instruments and the derivatives scope exception for contracts in an entity's own equity, which reduces the number of accounting models for convertible debt instruments and convertible preferred stock. Convertible instruments will no longer have to be separated into debt and equity components. Convertible debt instruments will be reported as a single liability and convertible preferred stock will be reported as a single equity instrument. Similarly, the embedded conversion feature will no longer be amortized as interest expense over the life of the instrument. Instead, a convertible debt instrument will be accounted for wholly as debt unless 1) a convertible instrument contains features that require bifurcation as a derivative, or 2) a convertible debt instrument was issued at a substantive premium. Among other potential impacts, this ASU is expected to reduce reported interest expense, decrease reported net loss, and result in a reclassification of certain conversion feature balance sheet amounts from stockholder’s equity to liabilities as it relates to the convertible senior notes. This ASU also simplifies the diluted earnings per share calculations by requiring the use of the if-converted method and that the effect of potential share settlement be included in diluted earnings per share calculations. First quarter of fiscal 2023. We are currently evaluating the impact of this standard on our condensed consolidated financial statements.

Investments and Fair Value Meas

Investments and Fair Value Measurements	6 Months Ended
	Jul. 31, 2021
Investments, Debt and Equity Securities and Fair Value Disclosures [Abstract]
Investments and Fair Value Measurements	Investments and Fair Value Measurements The carrying amounts of certain of our financial instruments including cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate fair value due to their short-term maturities. Assets and liabilities recorded at fair value in the condensed consolidated financial statements are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Hierarchical levels that are directly related to the amount of subjectivity associated with the inputs to the valuation of these assets or liabilities are as follows: Level 1—Observable inputs, such as quoted prices in active markets for identical assets or liabilities. Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability. The following table sets forth the fair value of our financial assets that were measured on a recurring basis: July 31, 2021 January 31, 2021 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Money market funds $ 1,401,221 $ — $ — $ 1,401,221 $ 933,058 $ — $ — $ 933,058 U.S. treasury securities — 20,129 — 20,129 — 75,068 — 75,068 Corporate bonds — 132,268 — 132,268 — 12,779 — 12,779 Commercial paper — 167,093 — 167,093 — — — — Reported as: Assets: Cash and cash equivalents $ 1,431,683 $ 933,058 Investments, current 267,035 87,847 Investments, non-current 21,993 — Total $ 1,720,711 $ 1,020,905 Our investments in money market funds are measured at fair value on a recurring basis. These money market funds are actively traded and reported daily through a variety of sources. The fair value of the money market fund investments is classified as Level 1. The following table presents our investments in available-for-sale debt securities as of July 31, 2021: (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash and cash equivalents: Corporate bonds $ 5,766 $ — $ (1) $ 5,765 Commercial paper 24,698 — (1) 24,697 Investments, current: U.S. treasury securities 20,134 — (5) 20,129 Corporate bonds 104,579 — (69) 104,510 Commercial paper 142,454 — (58) 142,396 Investments, non-current: Corporate bonds 22,005 — (12) 21,993 Total available-for-sale investments $ 319,636 $ — $ (146) $ 319,490 The following table presents our investments in available-for-sale debt securities as of January 31, 2021: (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Investments, current: U.S. treasury securities $ 75,032 $ 36 $ — $ 75,068 Corporate bonds 12,765 14 — 12,779 Total available-for-sale investments $ 87,797 $ 50 $ — $ 87,847 The following table presents the fair values and unrealized losses related to our investments in available-for-sale debt securities classified by length of time that the securities have been in a continuous unrealized loss position as of July 31, 2021: Less than 12 Months 12 Months or Greater Total (In thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. treasury securities $ 20,130 $ (5) $ — $ — $ 20,130 $ (5) Corporate bonds 126,200 (82) — — 126,200 (82) Commercial paper 167,092 (59) — — 167,092 (59) Total $ 313,422 $ (146) $ — $ — $ 313,422 $ (146) As of January 31, 2021, we did not have any investments in available-for-sale debt securities in an unrealized loss position. The contractual maturities of our investments as of July 31, 2021 are as follows (in thousands): Due within one year $ 297,498 Due within one to two years 21,992 Total $ 319,490 Investments with maturities of less than 12 months from the balance sheet date are classified as current assets, which are available for use to fund current operations. Investments with maturities greater than 12 months from the balance sheet date are classified as non-current assets. Convertible Senior Notes Refer to Note 7 “Convertible Senior Notes” for details regarding the fair value of our convertible senior notes. Equity Investments Our equity investments are included in “Investments, non-current” on our condensed consolidated balance sheets. The following table provides a summary of our equity investments: (In thousands) July 31, 2021 January 31, 2021 Equity investments without readily determinable fair values $ 10,777 $ 10,244 Equity investments under the equity method of accounting 4,119 3,484 Total $ 14,896 $ 13,728

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jul. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings A putative class action lawsuit alleging violations of the federal securities laws was filed on December 4, 2020 in the U.S. District Court for the Northern District of California (the “Court”) against us, our CEO and our CFO. The initial complaint alleged violations of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), for allegedly making materially false and misleading statements regarding our financial guidance and asserted a putative class period of October 21, 2020 to December 2, 2020. On March 16, 2021, the Court appointed Louisiana Sheriffs’ Pension & Relief Fund as lead plaintiff and approved its selection of lead plaintiff counsel in the case. On June 7, 2021, the lead plaintiff filed an amended complaint which expands the putative class period to run from March 26, 2020 to December 2, 2020 and alleges that defendants made materially false and misleading statements regarding our marketing efforts, hiring practices, and retention of personnel. The lead plaintiff seeks unspecified monetary damages and other relief. On July 27, 2021, defendants filed a motion to dismiss the amended complaint, which is scheduled for hearing on November 18, 2021. Several derivative lawsuits related to the securities class action were filed in February, March, and April 2021 in the U.S. District Court for the Northern District of California and California Superior Court, San Francisco County. The lawsuits name our CEO, our CFO, and many of our board members as defendants, and the company as a nominal defendant. The lawsuits allege claims for breach of fiduciary duties, unjust enrichment, waste of corporate assets, abuse of control, and gross mismanagement against the defendants, and claims for contribution under Sections 10(b) and 21D of the Exchange Act against only our CEO and CFO. The plaintiffs seek unspecified monetary damages and other relief on behalf of the company. The court has stayed the actions pursuant to stipulation of the parties until after a ruling on the pending motion to dismiss the federal securities case. We are also subject to certain routine legal and regulatory proceedings, as well as demands and claims that arise in the normal course of our business. We make 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 impact of negotiations, estimated settlements, legal rulings, advice of legal counsel and other information and events pertaining to a particular matter. In our opinion, resolution of any pending claims (either individually or in the aggregate) is not expected to have a material adverse impact on our condensed consolidated results of operations, cash flows or financial position, nor is it possible to provide an estimated amount of any such loss. However, depending on the nature and timing of any such dispute, an unfavorable resolution of a matter could materially affect our future financial position, results of operations or cash flows, or all, in a particular period. Indemnification Arrangements During the ordinary course of business, we may indemnify, hold harmless and agree to reimburse for losses suffered or incurred, our customers, vendors, and each of their affiliates for certain intellectual property infringement and other claims by third parties with respect to our offerings, in connection with our commercial license arrangements or related to general business dealings with those parties. As permitted under Delaware law, we have entered into indemnification agreements with our officers, directors and certain employees, indemnifying them for certain events or occurrences while they serve as our officers or directors or those of our direct and indirect subsidiaries.

Leases

Leases	6 Months Ended
	Jul. 31, 2021
Leases [Abstract]
Leases	Leases In April 2021, we entered into an agreement to terminate our lease of certain office space located in San Jose, CA and ceased use of the space as of April 30, 2021. As a result, the related right-of-use asset and leasehold improvements balances were written off and we have no remaining liability as of July 31, 2021. In total, a $55.2 million loss was recognized during the six months ended July 31, 2021, which includes certain termination-related fees. The loss is included in “General and administrative” expenses on our condensed consolidated statement of operations. As of January 31, 2021, we had $155.5 million in related operating lease commitments.

Property and Equipment

Property and Equipment	6 Months Ended
	Jul. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment are stated at cost, net of accumulated depreciation and amortization. These assets are depreciated and amortized using the straight-line method over their estimated useful lives. Property and equipment consisted of the following: (In thousands) July 31, 2021 January 31, 2021 Computer equipment and software $ 75,564 $ 70,628 Furniture and fixtures 28,626 33,142 Leasehold and building improvements (1) 135,990 180,956 Capitalized software development costs (2) 30,833 23,795 Property and equipment, gross 271,013 308,521 Less: accumulated depreciation and amortization (138,172) (125,741) Property and equipment, net $ 132,841 $ 182,780 _________________________ (1) Includes costs related to assets not yet placed into service of $25.4 million as of January 31, 2021. All assets were placed into service as of July 31, 2021. (2) Includes costs related to projects still under development of $5.5 million and $16.7 million, as of July 31, 2021 and January 31, 2021, respectively. Depreciation and amortization expense of Property and equipment, net was $10.0 million and $7.7 million for the three months ended July 31, 2021 and 2020, respectively, and $20.9 million and $13.5 million for the six months ended July 31, 2021 and 2020, respectively. Geographic Information The following table presents our long-lived assets, which consist of property and equipment, net of depreciation and amortization, and operating lease right-of-use assets by geographic region: (In thousands) July 31, 2021 January 31, 2021 United States $ 312,907 $ 476,575 United Kingdom 47,598 50,460 Other International 11,402 12,041 Total long-lived assets $ 371,907 $ 539,076

Acquisition, Goodwill and Intan

Acquisition, Goodwill and Intangible Assets	6 Months Ended
	Jul. 31, 2021
Business Combinations [Abstract]
Acquisition, Goodwill and Intangible Assets	Acquisition, Goodwill and Intangible Assets Fiscal 2022 Acquisition TruSTAR On May 28, 2021, we acquired 100% of the voting equity interest of TruSTAR Technology, Inc. (“TruSTAR”), a privately-held Delaware corporation that provides an intelligence platform for cybersecurity and threat data. This acquisition has been accounted for as a business combination. The total consideration transferred for this acquisition was $82.1 million, of which $81.2 million was in cash. The preliminary purchase price was allocated as follows: $16.5 million to identified intangible assets, $1.1 million to other net liabilities acquired, with the excess $66.7 million of the purchase price over the fair value of net assets acquired recorded as goodwill, allocated to our single operating segment. Goodwill is primarily attributable to the value expected from the synergies of the combination, including combined selling opportunities with our products. This goodwill is not deductible for income tax purposes. The results of operations of TruSTAR, which are not material, have been included in our condensed consolidated financial statements from the date of purchase. 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, except useful life) Fair Value Useful Life Developed technology $ 10,100 36 Customer relationships 6,400 36 Total intangible assets acquired $ 16,500 Goodwill Goodwill balances are presented below: (In thousands) Carrying Amount Balance as of January 31, 2021 $ 1,334,888 Goodwill acquired 66,740 Balance as of July 31, 2021 $ 1,401,628 There was no impairment of goodwill during the six months ended July 31, 2021 or 2020. Intangible Assets Intangible assets subject to amortization as of July 31, 2021 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life Developed technology $ 283,400 $ (146,915) $ 136,485 52 Customer relationships 92,710 (37,884) 54,826 35 Other acquired intangible assets 7,394 (5,801) 1,593 14 Total intangible assets subject to amortization $ 383,504 $ (190,600) $ 192,904 Intangible assets subject to amortization as of January 31, 2021 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life Developed technology $ 273,349 $ (127,072) $ 146,277 57 Customer relationships 86,310 (28,778) 57,532 41 Other acquired intangible assets 7,420 (5,076) 2,344 19 Total intangible assets subject to amortization $ 367,079 $ (160,926) $ 206,153 Amortization expense from acquired intangible assets was $14.9 million and $14.6 million for the three months ended July 31, 2021 and 2020, respectively, and $29.7 million and $29.3 million for the six months ended July 31, 2021 and 2020, respectively. The expected future amortization expense for acquired intangible assets as of July 31, 2021 is as follows: Fiscal Period (In thousands) Expected Amortization Expense Remaining fiscal 2022 $ 28,135 Fiscal 2023 55,448 Fiscal 2024 48,892 Fiscal 2025 33,010 Fiscal 2026 17,058 Thereafter 10,361 Total amortization expense $ 192,904

Convertible Senior Notes

Convertible Senior Notes	6 Months Ended
	Jul. 31, 2021
Debt Disclosure [Abstract]
Convertible Senior Notes	Convertible Senior Notes Convertible Senior Notes Due 2026 On July 9, 2021, we issued $1.0 billion aggregate principal amount of 0.75% Convertible Senior Notes due 2026 (the “2026 Notes”). The 2026 Notes are general senior, unsecured obligations of Splunk. The total proceeds from the issuance of the 2026 Notes was $981.7 million, net of issuance costs, some of which were unpaid as of July 31, 2021. The 2026 Notes will mature on July 15, 2026, unless earlier redeemed, repurchased or converted. The 2026 Notes will bear interest from July 9, 2021, at a rate of 0.75% per year, payable semiannually in arrears on January 15 and July 15 of each year, beginning on January 15, 2022. The initial conversion rate for the 2026 Notes is 6.25 shares of our common stock per $1,000 principal amount of the 2026 Notes, which is equivalent to an initial conversion price of approximately $160.00 per share of our common stock, subject to adjustment upon the occurrence of certain specified events. The initial conversion price of the 2026 Notes represents a premium of approximately 30.0% to the volume weighted average price of our common stock on the Nasdaq Global Select Market over a 10-day period of approximately $123.08 per share on June 21, 2021, which was the date the pricing of the 2026 Notes was determined. Convertible Senior Notes Due 2027 On June 5, 2020, we issued $1.27 billion aggregate principal amount of 1.125% Convertible Senior Notes due 2027 (the “2027 Notes”), including the exercise in full by the initial purchasers of the 2027 Notes of their option to purchase an additional $165.0 million principal amount of 2027 Notes. The 2027 Notes are general senior, unsecured obligations of Splunk. The total proceeds from the issuance of the 2027 Notes was $1.25 billion, net of initial purchaser discounts and other issuance costs. The 2027 Notes will mature on June 15, 2027, unless earlier redeemed, repurchased or converted. The 2027 Notes will bear interest from June 5, 2020 at a rate of 1.125% per year, payable semiannually in arrears on June 15 and December 15 of each year, beginning on December 15, 2020. The initial conversion rate for the 2027 Notes is 3.9164 shares of our common stock per $1,000 principal amount of the 2027 Notes, which is equivalent to an initial conversion price of approximately $255.34 per share of our common stock, subject to adjustment upon the occurrence of certain specified events. The initial conversion price of the 2027 Notes represents a premium of approximately 35.0% to the volume weighted average price of our common stock on the Nasdaq Global Select Market of approximately $189.14 per share on June 2, 2020, which was the date the pricing of the 2027 Notes was determined. Convertible Senior Notes Due 2023 and 2025 In September 2018, we issued $1.27 billion aggregate principal amount of 0.50% Convertible Senior Notes due 2023 (the “2023 Notes”), including the exercise in full by the initial purchasers of the 2023 Notes of their option to purchase an additional $165.0 million principal amount of 2023 Notes, and $862.5 million aggregate principal amount of 1.125% Convertible Senior Notes due 2025 (the “2025 Notes”), including the exercise in full by the initial purchasers of the 2025 Notes of their option to purchase an additional $112.5 million principal amount of 2025 Notes. The 2023 Notes and the 2025 Notes are general senior, unsecured obligations of Splunk. The total proceeds from the issuance of the 2023 Notes and the 2025 Notes was $2.11 billion, net of initial purchaser discounts and other issuance costs. The 2023 Notes will mature on September 15, 2023, and the 2025 Notes will mature on September 15, 2025, in each case unless earlier redeemed, repurchased or converted. The 2023 Notes bear interest from September 21, 2018 at a rate of 0.50% per year and the 2025 Notes bear interest from September 21, 2018 at a rate of 1.125% per year, in each case payable semiannually in arrears on March 15 and September 15 of each year, beginning on March 15, 2019. The initial conversion rate for each of the 2023 Notes and 2025 Notes is 6.7433 shares of our common stock per $1,000 principal amount of each of the 2023 Notes and 2025 Notes, which is equivalent to an initial conversion price of approximately $148.30 per share of our common stock, subject to adjustment upon the occurrence of certain specified events. The initial conversion price of each of the 2023 Notes and 2025 Notes represents a premium of approximately 27.5% to the $116.31 per share closing price of our common stock on September 18, 2018, which was the date the pricing of the 2023 Notes and the 2025 Notes was determined. Other Terms The 2026 Notes are convertible at the option of the holder at any time prior to the close of business on the business day immediately preceding the maturity date. We may not redeem the 2026 Notes prior to July 20, 2024. We may redeem for cash all or any portion of the 2026 Notes, at our option, on or after July 20, 2024 if the last reported sale price of our common stock has been 140% of the conversion price for the 2026 Notes then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which we provide notice of redemption at a redemption price equal to 100% of the principal amount of the 2026 Notes, plus accrued and unpaid interest to, but excluding, the redemption date. Whether to exercise our redemption option is solely within our control. The 2023 Notes, 2025 Notes, and 2027 Notes will be convertible at the option of the holders at any time prior to the close of business on the business day immediately preceding June 15, 2023, June 15, 2025 and December 15, 2026 for the 2023 Notes, 2025 Notes and 2027 Notes, respectively, only under the following circumstances: • during any fiscal quarter commencing after the fiscal quarter ending on January 31, 2019 (and only during such fiscal quarter) for the 2023 Notes, and the 2025 Notes, and October 31, 2020 (and only during such fiscal quarter) for the 2027 Notes, if the last reported sale price of our common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price for the relevant series of notes on each applicable trading day; • during the five business day period after any 10 consecutive trading day period (the “measurement period”) in which the trading price (as defined in the indenture governing the relevant series of notes) per $1,000 principal amount of the relevant series of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of our common stock and the conversion rate for the relevant series of notes on each such trading day; • if we call the relevant series of notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or • upon the occurrence of specified corporate events as set forth in the relevant indenture. On or after June 15, 2023, June 15, 2025, and December 15, 2026 for the 2023 Notes, 2025 Notes, and 2027 Notes, respectively, until the close of business on the second scheduled trading day immediately preceding the relevant maturity date, holders of the relevant series of notes may convert all or any portion of their notes of such series, in multiples of $1,000 principal amount, regardless of the foregoing circumstances. Upon conversion, we may satisfy our conversion obligation by paying and/or delivering, as the case may be, cash, shares of our common stock or a combination of cash and shares of our common stock, at our election, in the manner and subject to the terms and conditions provided in the relevant indenture; provided, in the case of the 2026 Notes, the holder is to determine the settlement method related to any notes converted in connection with the exercise of our redemption option as mentioned above. Subject to the provisions described in the immediately preceding sentence, upon any conversion of the 2023 Notes, 2025 Notes, 2026 Notes, and 2027 Notes (together the “Notes”), it is our current intent to settle the first $1,000 of conversion value of each $1,000 principal amount of such notes in cash and the remaining conversion value, if any, in shares of common stock. If we undergo a fundamental change (as defined in the applicable indenture governing the relevant series of notes), holders may require us to repurchase for cash all or any portion of their notes of the relevant series at a fundamental change repurchase price equal to 100% of the principal amount of the relevant series of notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. In addition, following certain corporate events that occur prior to the relevant maturity date of a series of notes or if we deliver a notice of redemption in respect of a series of notes, we will, in certain circumstances, increase the conversion rate of the relevant series of notes for a holder of such series who elects to convert its notes of the applicable series in connection with such corporate event or notice of redemption, as the case may be. During the three months ended July 31, 2021, the conditions allowing holders of the Notes to convert or redeem were not met. The Notes are not required to be settled in cash within the next twelve months and as such are classified as long-term debt on our condensed consolidated balance sheet as of July 31, 2021. We may not redeem the 2023 Notes, 2025 Notes, and 2027 Notes prior to September 20, 2021, September 20, 2022 and June 20, 2024, respectively. We may redeem for cash all or any portion of the 2023 Notes, 2025 Notes and 2027 Notes, at our option, on or after September 20, 2021, September 20, 2022, and June 20, 2024, respectively, in each case if the last reported sale price of our common stock has been at least 130% of the conversion price for the relevant series of notes then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which we provide notice of redemption at a redemption price equal to 100% of the principal amount of the relevant series of notes to be redeemed, plus accrued and unpaid interest to, but excluding, the relevant redemption date. Whether to exercise our redemption options under each respective indenture is solely within our control. Partial Repurchase of the 2023 Notes On June 5, 2020, we used a portion of the net proceeds from the issuance of the 2027 Notes to repurchase $488.3 million aggregate principal amount of the 2023 Notes (the “2023 Notes Partial Repurchase”), leaving $776.7 million aggregate principal outstanding on the 2023 Notes immediately after the 2023 Notes Partial Repurchase. The 2023 Notes Partial Repurchase was not made pursuant to a redemption notice and constituted individually privately negotiated transactions. The holders of the repurchased 2023 Notes also invested in the 2027 Notes. For each holder, the 2023 Notes and the 2027 Notes exchanged were deemed to be substantially different as the present value of the cash flows under the terms of the 2027 Notes was at least 10% different from the present value of the remaining cash flows under the terms of the 2023 Notes and accordingly, the 2023 Notes Partial Repurchase was accounted for as a debt extinguishment. We used $691.6 million of the net proceeds from the issuance of the 2027 Notes to complete the 2023 Notes Partial Repurchase, of which $407.4 million and $283.6 million were allocated to the liability and equity components of the 2023 Notes, respectively, and $0.5 million was related to the payment of the interest accrued. Accounting for the Notes In accounting for the issuance of the Notes, we separated each of the Notes into their respective liability and equity components. The carrying amounts of the liability components of the respective notes were calculated by measuring the fair value of similar debt instruments that do not have an associated convertible feature. The carrying amounts of the equity components, representing the conversion option, were determined by deducting the fair value of the liability components from the par value of the respective notes. This difference represents the debt discount that is amortized to interest expense over the respective terms of the relevant series of notes using the effective interest rate method. The carrying amounts of the equity components representing the conversion options were $266.9 million, $237.2 million, $293.0 million and $347.4 million for the 2023 Notes, the 2025 Notes, the 2026 Notes and the 2027 Notes, respectively, which are recorded in additional paid-in capital and are not remeasured as long as they continue to meet the conditions for equity classification. In accounting for the issuance costs related to the Notes, we allocated the total amount incurred for the relevant series of notes to the liability and equity components based on the proportion of the proceeds allocated to the debt and equity components for that series. Issuance costs attributable to the liability component of the 2023 Notes, the 2025 Notes, the 2026 Notes and the 2027 Notes were $10.4 million, $6.5 million, $12.9 million and $14.2 million, respectively. The issuance costs allocated to the liability component are amortized to interest expense over the contractual terms of the 2023 Notes, the 2025 Notes, the 2026 Notes and the 2027 Notes at an effective interest rate of 5.65%, 6.22%, 8.37% and 6.26%, respectively. Issuance costs attributable to the equity component of the 2023 Notes, the 2025 Notes, the 2026 Notes and the 2027 Notes were $2.8 million, $2.5 million, $5.4 million and $5.4 million, respectively, and are netted against the equity components representing the conversion option in additional paid-in capital. The cash consideration of the 2023 Notes Partial Repurchase allocated to the liability component of the 2023 Notes was based on the fair value of the liability component of the 2023 Notes as of June 5, 2020 utilizing an effective discount rate of 6.25%. This rate was based on our estimated rate for a similar liability with the same maturity, but without the conversion option. To derive this effective discount rate, we observed the trading details of the 2023 Notes immediately prior to the repurchase date to determine the volatility of the 2023 Notes. We utilized the observed volatility to calculate the effective discount rate, which was adjusted to reflect the term of the remaining 2023 Notes. The cash consideration allocated to the equity component of the 2023 Notes was calculated by deducting the fair value of the liability component from the aggregate cash consideration and was recorded as a reduction to “Additional paid-in capital.” The gain on extinguishment was subsequently determined by comparing the allocated cash consideration with the carrying value of the liability component, which includes the proportionate amounts of unamortized debt discount and the remaining unamortized debt issuance costs. The net carrying amount of the liability component of the 2023 Notes immediately prior to the repurchase was as follows: June 5, 2020 (In thousands) 2023 Notes Total 2023 Notes Partial Repurchase Principal $ 1,265,000 $ 488,339 Unamortized debt discount (184,336) (71,161) Unamortized debt issuance costs (7,194) (2,777) Net carrying amount $ 1,073,470 $ 414,401 The 2023 Notes Partial Repurchase resulted in a gain on extinguishment of convertible senior notes, which is included in “Other income (expense), net” on our consolidated statements of operations, and was calculated as follows: (In thousands) 2023 Notes Partial Repurchase Net carrying amount of the liability component associated with the 2023 Notes Partial Repurchase $ 414,401 Less: Cash consideration allocated to the liability component (407,449) Gain from the 2023 Notes Partial Repurchase $ 6,952 The net carrying amounts of the liability component for each series of notes as of July 31, 2021 were as follows: (In thousands) 2023 Notes (1) 2025 Notes 2026 Notes 2027 Notes Liability component: Principal amount $ 776,661 $ 862,500 $ 1,000,000 $ 1,265,000 Unamortized discount (75,382) (152,069) (290,069) (300,036) Unamortized issuance costs (2,942) (4,185) (12,908) (12,221) Net carrying amount $ 698,337 $ 706,246 $ 697,023 $ 952,743 _________________________ (1) Reflects the impact of the 2023 Notes Partial Repurchase on June 5, 2020, as discussed above. The following tables sets forth the interest expense related to each series of notes: Three Months Ended July 31, Six Months Ended July 31, (In thousands) 2021 2020 2021 2020 2023 Notes: Coupon interest expense $ 971 $ 1,174 $ 1,942 $ 2,755 Amortization of debt discount (conversion option) 8,379 9,604 16,335 22,022 Amortization of debt issuance costs 327 375 637 860 Total interest expense related to the 2023 Notes $ 9,677 $ 11,153 $ 18,914 $ 25,637 2025 Notes: Coupon interest expense $ 2,426 $ 2,426 $ 4,852 $ 4,852 Amortization of debt discount (conversion option) 8,127 7,649 15,784 14,961 Amortization of debt issuance costs 224 210 435 411 Total interest expense related to the 2025 Notes $ 10,777 $ 10,285 $ 21,071 $ 20,224 2026 Notes: Coupon interest expense $ 458 $ — $ 458 $ — Amortization of debt discount (conversion option) 2,960 — 2,960 — Amortization of debt issuance costs 133 — 133 — Total interest expense related to the 2026 Notes $ 3,551 $ — $ 3,551 $ — 2027 Notes: Coupon interest expense $ 3,558 $ 2,174 $ 7,116 $ 2,174 Amortization of debt discount (conversion option) 10,643 6,230 20,659 6,230 Amortization of debt issuance costs 433 254 841 254 Total interest expense related to the 2027 Notes $ 14,634 $ 8,658 $ 28,616 $ 8,658 As of July 31, 2021, the estimated fair values of the 2023 Notes, the 2025 Notes, and the 2027 Notes, based on Level 2 inputs, were approximately $0.91 billion, $1.05 billion, and $1.24 billion, respectively. As of July 31, 2021, the estimated fair value of the 2026 Notes, based on Level 3 inputs, was $0.71 billion. Capped Calls In connection with the issuance of the 2023 Notes, the 2025 Notes and the 2027 Notes, we entered into privately negotiated capped call transactions relating to each series of notes with certain counterparties (the “Capped Calls”). The Capped Calls are expected to reduce potential dilution to our common stock upon conversion of a given series of notes and/or offset any cash payments that we are required to make in excess of the principal amount of converted notes of such series, as the case may be, with such reduction and/or offset subject to a cap. The Capped Calls are subject to adjustment upon the occurrence of certain specified extraordinary events affecting us, including merger events, tender offers and announcement events. In addition, the Capped Calls are subject to certain specified additional disruption events that may give rise to a termination of the Capped Calls, including nationalization, insolvency or delisting, changes in law, failures to deliver, insolvency filings and hedging disruptions. The following table sets forth other key terms and premiums paid for the Capped Calls related to each series of notes: Capped Calls Entered into in Connection with the Issuance of the 2023 and 2025 Notes Capped Calls Entered into in Connection with the Issuance of the 2027 Notes Initial strike price, subject to certain adjustments $ 148.30 $ 255.34 Cap price, subject to certain adjustments $ 232.62 $ 378.28 Total premium paid (in thousands) $ 274,275 $ 137,379 For accounting purposes, the Capped Calls are separate transactions, and not part of the terms of any series of notes. As the Capped Calls qualify for a scope exception from derivative accounting for instruments that are both indexed to the issuer’s own stock and classified in stockholders’ equity in its statement of financial position, the premium paid for the purchase of the Capped Calls has been recorded as a reduction to “Additional paid-in capital” and will not be remeasured.

Stock Compensation Plans and St

Stock Compensation Plans and Stockholders' Equity	6 Months Ended
	Jul. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock Compensation Plans and Stockholders' Equity	Stock Compensation Plans and Stockholders’ Equity Equity Incentive Plans The following table summarizes the stock option, restricted stock unit (“RSU”) and performance unit (“PSU”) activity under our 2012 Equity Incentive Plan during the six months ended July 31, 2021: Options Outstanding RSUs and PSUs Shares Weighted- Weighted- Aggregate Intrinsic Value (1) Shares (in years) (in thousands) Balances as of January 31, 2021 418,743 $ 11.37 5.85 $ 64,342 11,236,903 Additional shares authorized Options granted (2) 41,772 16.83 Options exercised (101,264) 11.62 Options forfeited and expired (19,438) 13.25 RSUs and PSUs granted 6,099,575 RSUs and PSUs vested (2,116,750) RSUs and PSUs forfeited and canceled (1,514,377) Balances as of July 31, 2021 339,813 $ 11.87 5.81 $ 44,215 13,705,351 Vested and expected to vest 333,176 $ 11.85 5.77 $ 43,357 12,793,290 Exercisable as of July 31, 2021 165,472 $ 11.12 4.16 $ 21,654 _________________________ (1) The intrinsic value is calculated as the difference between the exercise price of the underlying stock option award and the closing market price of our common stock as of July 31, 2021. (2) All options granted were equity awards assumed in connection with the TruSTAR acquisition. During the six months ended July 31, 2021 and 2020, upon each settlement date of our outstanding RSUs to current employees, RSUs were withheld to cover the required withholding tax, which was based on the value of the RSU on the settlement date as determined by the closing price of our common stock on the trading day of the applicable settlement date. The remaining shares were delivered to the recipient as shares of our common stock. The amount remitted to the tax authorities for the employees’ tax obligation was reflected as a financing activity on our condensed consolidated statements of cash flows. These shares withheld by us as a result of the net settlement of RSUs were not considered issued and outstanding, thereby reducing our shares outstanding used to calculate earnings per share. These shares were returned to the reserves and are available for future issuance under our 2012 Equity Incentive Plan. We may also require employees to sell a portion of the shares that they received upon the vesting of RSUs in order to cover any required withholding taxes. During the six months ended July 31, 2021, we granted 516,686 PSUs to certain executives under our 2012 Equity Incentive Plan, which includes both PSUs awarded but not yet earned, as well as PSUs earned and eligible to vest. The number of PSUs granted that were earned and eligible to vest were determined after a one-year performance period, based on achievement of certain company financial performance measures and the recipient’s continued service with us. The number of shares of our stock to be received based on financial performance measures can range from 0% to 200% of the target amount. Compensation expense for PSUs with financial performance measures is measured using the fair value at the date of grant and recorded over the vesting period of three On October 27, 2020, the Compensation Committee of our Board of Directors approved a modification to the performance thresholds of our fiscal 2021 PSU awards. We accounted for this change as a Type III modification under ASC 718 as the expectation of the achievement of certain performance conditions related to these awards changed from improbable to probable post-modification. As a result, we reversed $10.8 million of stock-based compensation expense previously recognized for these awards, during fiscal 2021. Post-modification stock-based compensation expense related to these awards will be recognized based on the modification date fair value over their remaining service period, under the graded-vesting attribution method. The following table presents unrecognized compensation cost related to stock options, RSUs, PSUs and restricted stock awards (“RSA”) as of July 31, 2021: Unrecognized Compensation Cost Weighted-Average Remaining Contractual Term Weighted-Average Grant Date Fair Value Per Share Stock options $ 16,650 1.5 $ 105.32 RSUs 1,554,528 2.6 143.86 PSUs 119,973 1.2 155.53 RSAs 36,113 1.9 121.20 Total unrecognized compensation cost $ 1,727,264 The following table summarizes our RSA activity during the six months ended July 31, 2021: Shares Outstanding as of January 31, 2021 485,683 RSAs issued in connection with acquisition 10,932 RSAs vested (146,369) RSAs forfeited and canceled (1,400) Outstanding as of July 31, 2021 348,846 Stock Repurchase Program In June 2021, our Board of Directors authorized and approved a stock repurchase program of up to $1.0 billion of our outstanding common stock. Repurchases may be made from time to time through open market purchases or through privately negotiated transactions, subject to market conditions, applicable legal requirements and other relevant factors. The repurchase program does not obligate the Company to acquire any particular amount of its common stock, and may be suspended at any time at the Company’s discretion.

Revenues, Accounts Receivable,

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations	6 Months Ended
	Jul. 31, 2021
Segment Reporting [Abstract]
Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations	Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations Disaggregation of Revenues The following table presents disaggregated revenues by major product or service type: Three Months Ended July 31, Six Months Ended July 31, (In thousands) 2021 2020 2021 2020 Revenues Cloud services $ 217,422 $ 125,870 $ 411,380 $ 238,022 License 219,600 176,814 362,881 325,199 Maintenance and services 168,721 188,974 333,533 362,514 Total revenues $ 605,743 $ 491,658 $ 1,107,794 $ 925,735 Revenues by geography are based on the shipping address of the customer. The following table presents our revenues by geographic region: Three Months Ended July 31, Six Months Ended July 31, (In thousands) 2021 2020 2021 2020 United States $ 416,581 $ 328,374 $ 763,282 $ 611,506 International 189,162 163,284 344,512 314,229 Total revenues $ 605,743 $ 491,658 $ 1,107,794 $ 925,735 Other than the United States, no other individual country exceeded 10% of total revenues during any of the periods presented. The following table presents revenues by channel partners representing 10% or more of total revenues: Three Months Ended July 31, Six Months Ended July 31, 2021 2020 2021 2020 Channel Partner A 26 % 29 % 27 % 29 % Channel Partner B 14 % 14 % 14 % 14 % The revenues from these channel partners are comprised of a number of customer transactions, none of which were individually greater than 10% of total revenues for the three or six months ended July 31, 2021 or 2020, respectively. Accounts Receivable The following table presents total current and non-current accounts receivable by channel partners representing 10% or more of total current and non-current accounts receivable: July 31, 2021 January 31, 2021 Channel Partner A 17 % 26 % Channel Partner B 9 % 9 % The COVID-19 pandemic and the recent economic downturn prompted us to perform additional credit reviews of our existing customers. After performing our additional reviews using a current expected credit loss model, we determined that, while there may be delays in certain of our collections, the risk of credit loss on our accounts receivable as of July 31, 2021 is low. As this is consistent with the results of our risk assessment, no significant adjustments to our allowance for doubtful accounts were made. Deferred Revenue Revenues recognized from amounts included in deferred revenue as of January 31, 2021 and 2020 were $610.7 million and $476.9 million during the six months ended July 31, 2021 and 2020, respectively. Remaining Performance Obligations Revenue allocated to remaining performance obligations represents contracted revenue that has not yet been recognized, which includes deferred revenue and non-cancelable amounts that will be invoiced and excludes performance obligations that are subject to cancellation terms. Our remaining performance obligations were $1.93 billion as of July 31, 2021, of which we expect to recognize approximately 66% as revenue over the next 12 months and the remainder thereafter.

Income Taxes

Income Taxes	6 Months Ended
	Jul. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are subject to income taxes in the U.S. and in foreign jurisdictions. We base our interim tax accruals on an estimated annual effective tax rate applied to year-to-date income, and we record discrete tax items in the period to which they relate. In each quarter, we update our estimated annual effective tax rate and make a year-to-date adjustment to our tax provision as necessary. Our fiscal 2022 annual effective rate differs from the U.S. statutory rate primarily due to the valuation allowance recorded on our U.S. losses. For the three months ended July 31, 2021 and 2020, we recorded income tax expense of $2.2 million and $1.2 million, respectively. For the six months ended July 31, 2021 and 2020, we recorded income tax expense of $3.4 million and an income tax benefit of $0.5 million, respectively. During the three months ended July 31, 2021, there were no material changes to our unrecognized tax benefits, and we do not expect material changes in our unrecognized tax benefits within the next twelve months. Because of our history of tax losses, all years remain open to tax audit.

Net Loss Per Share

Net Loss Per Share	6 Months Ended
	Jul. 31, 2021
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share Basic net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock outstanding during the period, less the weighted-average unvested common stock subject to repurchase or forfeiture. Diluted net loss per share is computed by giving effect to all potential shares of common stock, including convertible senior notes, stock options, RSUs, PSUs and RSAs to the extent dilutive. The following table sets forth the computation of historical basic and diluted net loss per share: Three Months Ended July 31, Six Months Ended July 31, (In thousands, except per share amounts) 2021 2020 2021 2020 Numerator: Net loss $ (383,951) $ (261,322) $ (854,952) $ (566,901) Denominator: Weighted-average common shares outstanding 164,374 159,697 164,005 159,021 Less: Weighted-average unvested common shares subject to repurchase or forfeiture (356) (745) (390) (780) Weighted-average shares used to compute net loss per share, basic and diluted 164,018 158,952 163,615 158,241 Net loss per share, basic and diluted $ (2.34) $ (1.64) $ (5.23) $ (3.58) Since we were in a net loss position for all periods presented, basic net loss per share is the same as diluted net loss per share for all periods as the inclusion of all potentially dilutive securities outstanding would have been anti-dilutive. Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows: As of July 31, (In thousands) 2021 2020 Shares subject to outstanding common stock options 340 504 Shares subject to outstanding RSUs, PSUs and RSAs 14,054 12,450 Employee stock purchase plan 1,601 341 Shares underlying the conversion spread in the convertible senior notes — 2,148 Total 15,995 15,443 As of July 31, 2021, the aggregate outstanding principal amount under the Notes is potentially convertible into 22.3 million shares of our common stock. Since we expect to settle the principal amount of our convertible senior notes in cash, we use the treasury stock method for calculating any potential dilutive effect on diluted net income per share, if applicable. As a result, only the amount by which the conversion value exceeds the aggregate principal amount of the Notes (the “conversion spread”) is considered in the diluted earnings per share calculation. The conversion spread has a potentially dilutive effect on diluted net income per share when the average market price of our common stock for a given period exceeds the initial conversion price of $148.30 per share for the 2023 Notes and the 2025 Notes, $160.00 per share for the 2026 Notes, and $255.34 per share for the 2027 Notes. During the three months ended July 31, 2021, the average market price of our common stock was $128.02, which did not exceed the initial conversion price of the 2023 Notes, the 2025 Notes, the 2026 Notes or the 2027 Notes. Accordingly, we excluded the potentially dilutive effect of the conversion spread for the Notes. In connection with the issuance of the 2023 Notes, 2025 Notes, and 2027 Notes, we entered into Capped Calls, which were not included for purposes of calculating the number of diluted shares outstanding, as their effect would have been anti-dilutive.

Description of the Business a_2

Description of the Business and Significant Accounting Policies (Policies)	6 Months Ended
	Jul. 31, 2021
Accounting Policies [Abstract]
Business and Basis of Presentation	Business Splunk Inc. (“we,” “us,” “our”) provides innovative cloud and software solutions that deliver and operationalize insights from the data generated by digital systems. Data is produced by nearly every software application and electronic device across an organization and contains a real-time record of various activities, such as business transactions, customer and user behavior, and security threats. This data is growing significantly as a direct result of the prevalence and importance of digital systems used by today’s organizations. Our solutions help users remove barriers between insights derived from this data and actions organizations take to thrive in an era of unprecedented digital transformation. We were incorporated in California in October 2003 and reincorporated in Delaware in May 2006. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet data as of January 31, 2021 was derived from audited financial statements, but does not include all disclosures required by GAAP. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Annual Report on Form 10-K for the fiscal year ended January 31, 2021, filed with the SEC on March 31, 2021. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to state fairly the financial position, results of operations, comprehensive loss and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal 2022.
Fiscal Year	Fiscal Year Our fiscal year ends on January 31. References to fiscal 2022, for example, refer to the fiscal year ending January 31, 2022.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting periods covered by the financial statements and accompanying notes. In particular, we make estimates with respect to the stand-alone selling price for each distinct performance obligation included in customer contracts with multiple performance obligations, uncollectible accounts receivable, the assessment of the useful life and recoverability of long-lived assets (property and equipment, goodwill and identified intangibles), the period of benefit for deferred commissions, stock-based compensation expense, the fair value of the liability component of the convertible debt, the fair value of assets acquired and liabilities assumed for business combinations, income taxes, the discount rate used for operating leases, and contingencies. Actual results could differ from those estimates.
COVID-19	COVID-19 The novel coronavirus (“COVID-19”) has created, and may continue to create, significant uncertainty in macroeconomic conditions. The full extent to which the COVID-19 pandemic will directly or indirectly impact the global economy, the lasting social effects, and impact on our business, results of operations, and financial condition will depend on future developments, such as the duration, spread, and severity and potential recurrence of the virus and its variants, COVID-19 vaccination rates and the availability of COVID-19 vaccines both globally and in the U.S., that are highly uncertain and cannot be accurately predicted. As of the date of issuance of these condensed consolidated financial statements, we are not aware of
Segments	Segments We operate our business as one operating segment: the development and marketing of software solutions that enable our customers to gain real-time business insights by harnessing the value of their data. Our chief operating decision maker is our Chief Executive Officer, who reviews financial information presented on a consolidated basis for purposes of making operating decisions, assessing financial performance and allocating resources.
Principles of Consolidation	Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Splunk Inc. and its direct and indirect wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated upon consolidation.
Foreign Currency	Foreign CurrencyThe functional currency of our foreign subsidiaries is the U.S. dollar. Foreign currency transaction gains and losses are included in “Other income (expense), net” on our condensed consolidated statements of operations and were not material for the three and six months ended July 31, 2021 and 2020.
Revenue Recognition	Revenue Recognition We generate revenues in the form of cloud services fees, software license and related maintenance fees, and other service fees. Cloud services are provided on a subscription basis and give our customers access to our cloud solutions, which include related customer support. Licenses for on-premises software (“software”) are typically term licenses and provide the customer with a right to use the software. When a term license is purchased, maintenance is bundled with the license for the term of the license period. Typically, when purchasing a perpetual license, a customer also purchases one year of maintenance for which we charge a percentage of the license fee. Other services include training and professional services that are not integral to the functionality of the licenses or cloud services. Our contracts with customers often contain multiple performance obligations, which may include a combination of cloud services, software, related maintenance and support services, and professional services including training. We apply significant judgment in identifying and accounting for each performance obligation, as a result of evaluating the terms and conditions in contracts. For these contracts, we account for cloud services, software, maintenance and support, and other services as separate performance obligations as they are each distinct. Revenue is recognized when the performance obligations are satisfied. We satisfy our cloud service performance obligation over the associated contract term and recognize the associated revenue ratably over the term of the contract once access is provided to the customer, consistent with the pattern of benefit to the customer of such services. We satisfy our obligation and recognize revenue for software upon transfer of control of the software, which occurs at delivery of the license key to customers, or when the license term commences, if later. We satisfy our maintenance and support performance obligations and recognize revenue ratably over the maintenance and support term, consistent with the pattern of benefit to the customer of such services. Professional services and training are either provided on a time and material basis or over a contract term. We satisfy our professional services and training performance obligations and recognize the associated revenue as services are delivered. With respect to contracts that include customer acceptance provisions, we recognize revenue upon customer acceptance. Our policy is to record revenues net of any applicable sales tax, use, goods and services, value added, and excise taxes. Customers can purchase our products under different pricing options. Regardless of the pricing option selected, the consideration for our cloud services and license contracts is fixed and does not result in variable consideration. The transaction price is allocated to the separate performance obligations on a relative standalone selling price (“SSP”) basis. We determine the SSP based on an observable standalone selling price when it is available, as well as other factors, including the price charged to customers, our discounting practices, and our overall pricing objectives, while maximizing observable inputs. In situations where pricing is highly variable, we estimate the SSP using the residual approach. A receivable is recorded when we have an unconditional right to payment, either because we satisfied a performance obligation prior to receiving payment from the customer or we have a non-cancelable contract that has been invoiced in advance in accordance with our standard payment terms. Most of our multi-year cloud service and software contracts are invoiced annually. A receivable for multi-year cloud services is generally recorded upon invoicing. A receivable for multi-year software contracts is recorded upon delivery, whether or not invoiced, to the extent we have an unconditional right to receive payment in the future related to those licenses. The non-current portion of these receivables, primarily consisting of unbilled receivables from multi-year software contracts, is included in “Accounts receivable, non-current” on our condensed consolidated balance sheets. Payment terms and conditions vary by contract type, although our standard payment terms generally require payment within 30 to 60 days. In instances where the timing of revenue recognition differs from the timing of payment, we have determined our contracts do not generally include a significant financing component. The primary purpose of our invoicing terms is to provide customers with simplified and predictable ways of purchasing our products and services, not to receive financing from our customers or to provide customers with financing. Deferred revenue is recorded when we invoice a contract or deliver a license prior to recognizing revenue. It is comprised of balances related to maintenance, cloud services, training and professional services invoiced at the beginning of each service period, as well as licenses that we delivered prior to the license term commencing.
Recently Adopted and Issued Accounting Pronouncements	Recently Adopted Accounting Standards We did not adopt any new accounting standards in the period ended July 31, 2021. Recently Issued Accounting Pronouncements Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements Accounting Standards Update (“ASU”) No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815 - 40) This ASU amends the guidance on convertible instruments and the derivatives scope exception for contracts in an entity's own equity, which reduces the number of accounting models for convertible debt instruments and convertible preferred stock. Convertible instruments will no longer have to be separated into debt and equity components. Convertible debt instruments will be reported as a single liability and convertible preferred stock will be reported as a single equity instrument. Similarly, the embedded conversion feature will no longer be amortized as interest expense over the life of the instrument. Instead, a convertible debt instrument will be accounted for wholly as debt unless 1) a convertible instrument contains features that require bifurcation as a derivative, or 2) a convertible debt instrument was issued at a substantive premium. Among other potential impacts, this ASU is expected to reduce reported interest expense, decrease reported net loss, and result in a reclassification of certain conversion feature balance sheet amounts from stockholder’s equity to liabilities as it relates to the convertible senior notes. This ASU also simplifies the diluted earnings per share calculations by requiring the use of the if-converted method and that the effect of potential share settlement be included in diluted earnings per share calculations. First quarter of fiscal 2023. We are currently evaluating the impact of this standard on our condensed consolidated financial statements.

Description of the Business a_3

Description of the Business and Significant Accounting Policies New Accounting Pronouncements (Tables)	6 Months Ended
	Jul. 31, 2021
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Recently Issued Accounting Pronouncements Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements Accounting Standards Update (“ASU”) No. 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815 - 40) This ASU amends the guidance on convertible instruments and the derivatives scope exception for contracts in an entity's own equity, which reduces the number of accounting models for convertible debt instruments and convertible preferred stock. Convertible instruments will no longer have to be separated into debt and equity components. Convertible debt instruments will be reported as a single liability and convertible preferred stock will be reported as a single equity instrument. Similarly, the embedded conversion feature will no longer be amortized as interest expense over the life of the instrument. Instead, a convertible debt instrument will be accounted for wholly as debt unless 1) a convertible instrument contains features that require bifurcation as a derivative, or 2) a convertible debt instrument was issued at a substantive premium. Among other potential impacts, this ASU is expected to reduce reported interest expense, decrease reported net loss, and result in a reclassification of certain conversion feature balance sheet amounts from stockholder’s equity to liabilities as it relates to the convertible senior notes. This ASU also simplifies the diluted earnings per share calculations by requiring the use of the if-converted method and that the effect of potential share settlement be included in diluted earnings per share calculations. First quarter of fiscal 2023. We are currently evaluating the impact of this standard on our condensed consolidated financial statements.

Investments and Fair Value Me_2

Investments and Fair Value Measurements (Tables)	6 Months Ended
	Jul. 31, 2021
Investments, Debt and Equity Securities and Fair Value Disclosures [Abstract]
Schedule of fair value of financial assets and liabilities that were measured on a recurring basis	The following table sets forth the fair value of our financial assets that were measured on a recurring basis: July 31, 2021 January 31, 2021 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Money market funds $ 1,401,221 $ — $ — $ 1,401,221 $ 933,058 $ — $ — $ 933,058 U.S. treasury securities — 20,129 — 20,129 — 75,068 — 75,068 Corporate bonds — 132,268 — 132,268 — 12,779 — 12,779 Commercial paper — 167,093 — 167,093 — — — — Reported as: Assets: Cash and cash equivalents $ 1,431,683 $ 933,058 Investments, current 267,035 87,847 Investments, non-current 21,993 — Total $ 1,720,711 $ 1,020,905
Schedule of available-for-sale securities reconciliation	The following table presents our investments in available-for-sale debt securities as of July 31, 2021: (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash and cash equivalents: Corporate bonds $ 5,766 $ — $ (1) $ 5,765 Commercial paper 24,698 — (1) 24,697 Investments, current: U.S. treasury securities 20,134 — (5) 20,129 Corporate bonds 104,579 — (69) 104,510 Commercial paper 142,454 — (58) 142,396 Investments, non-current: Corporate bonds 22,005 — (12) 21,993 Total available-for-sale investments $ 319,636 $ — $ (146) $ 319,490 The following table presents our investments in available-for-sale debt securities as of January 31, 2021: (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Investments, current: U.S. treasury securities $ 75,032 $ 36 $ — $ 75,068 Corporate bonds 12,765 14 — 12,779 Total available-for-sale investments $ 87,797 $ 50 $ — $ 87,847
Schedule of unrealized loss on investments	The following table presents the fair values and unrealized losses related to our investments in available-for-sale debt securities classified by length of time that the securities have been in a continuous unrealized loss position as of July 31, 2021: Less than 12 Months 12 Months or Greater Total (In thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. treasury securities $ 20,130 $ (5) $ — $ — $ 20,130 $ (5) Corporate bonds 126,200 (82) — — 126,200 (82) Commercial paper 167,092 (59) — — 167,092 (59) Total $ 313,422 $ (146) $ — $ — $ 313,422 $ (146)
Investments classified by contractual maturity date	The contractual maturities of our investments as of July 31, 2021 are as follows (in thousands): Due within one year $ 297,498 Due within one to two years 21,992 Total $ 319,490
Schedule of equity investments	The following table provides a summary of our equity investments: (In thousands) July 31, 2021 January 31, 2021 Equity investments without readily determinable fair values $ 10,777 $ 10,244 Equity investments under the equity method of accounting 4,119 3,484 Total $ 14,896 $ 13,728

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jul. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and equipment consisted of the following: (In thousands) July 31, 2021 January 31, 2021 Computer equipment and software $ 75,564 $ 70,628 Furniture and fixtures 28,626 33,142 Leasehold and building improvements (1) 135,990 180,956 Capitalized software development costs (2) 30,833 23,795 Property and equipment, gross 271,013 308,521 Less: accumulated depreciation and amortization (138,172) (125,741) Property and equipment, net $ 132,841 $ 182,780 _________________________ (1) Includes costs related to assets not yet placed into service of $25.4 million as of January 31, 2021. All assets were placed into service as of July 31, 2021. (2)
Long-Lived Assets by Geographic Areas	The following table presents our long-lived assets, which consist of property and equipment, net of depreciation and amortization, and operating lease right-of-use assets by geographic region: (In thousands) July 31, 2021 January 31, 2021 United States $ 312,907 $ 476,575 United Kingdom 47,598 50,460 Other International 11,402 12,041 Total long-lived assets $ 371,907 $ 539,076

Acquisition, Goodwill and Int_2

Acquisition, Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jul. 31, 2021
Business Combinations [Abstract]
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	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, except useful life) Fair Value Useful Life Developed technology $ 10,100 36 Customer relationships 6,400 36 Total intangible assets acquired $ 16,500
Schedule of Goodwill	Goodwill balances are presented below: (In thousands) Carrying Amount Balance as of January 31, 2021 $ 1,334,888 Goodwill acquired 66,740 Balance as of July 31, 2021 $ 1,401,628
Schedule of finite-lived intangible assets	Intangible assets subject to amortization as of July 31, 2021 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life Developed technology $ 283,400 $ (146,915) $ 136,485 52 Customer relationships 92,710 (37,884) 54,826 35 Other acquired intangible assets 7,394 (5,801) 1,593 14 Total intangible assets subject to amortization $ 383,504 $ (190,600) $ 192,904 Intangible assets subject to amortization as of January 31, 2021 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life Developed technology $ 273,349 $ (127,072) $ 146,277 57 Customer relationships 86,310 (28,778) 57,532 41 Other acquired intangible assets 7,420 (5,076) 2,344 19 Total intangible assets subject to amortization $ 367,079 $ (160,926) $ 206,153
Schedule of expected future amortization for capitalized computer software costs developed for internal use	The expected future amortization expense for acquired intangible assets as of July 31, 2021 is as follows: Fiscal Period (In thousands) Expected Amortization Expense Remaining fiscal 2022 $ 28,135 Fiscal 2023 55,448 Fiscal 2024 48,892 Fiscal 2025 33,010 Fiscal 2026 17,058 Thereafter 10,361 Total amortization expense $ 192,904

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	6 Months Ended
	Jul. 31, 2021
Debt Disclosure [Abstract]
Convertible Senior Notes	The net carrying amount of the liability component of the 2023 Notes immediately prior to the repurchase was as follows: June 5, 2020 (In thousands) 2023 Notes Total 2023 Notes Partial Repurchase Principal $ 1,265,000 $ 488,339 Unamortized debt discount (184,336) (71,161) Unamortized debt issuance costs (7,194) (2,777) Net carrying amount $ 1,073,470 $ 414,401 The net carrying amounts of the liability component for each series of notes as of July 31, 2021 were as follows: (In thousands) 2023 Notes (1) 2025 Notes 2026 Notes 2027 Notes Liability component: Principal amount $ 776,661 $ 862,500 $ 1,000,000 $ 1,265,000 Unamortized discount (75,382) (152,069) (290,069) (300,036) Unamortized issuance costs (2,942) (4,185) (12,908) (12,221) Net carrying amount $ 698,337 $ 706,246 $ 697,023 $ 952,743 _________________________ (1) Reflects the impact of the 2023 Notes Partial Repurchase on June 5, 2020, as discussed above.
Calculation of Gain on Extinguishment of Convertible Senior Notes	The 2023 Notes Partial Repurchase resulted in a gain on extinguishment of convertible senior notes, which is included in “Other income (expense), net” on our consolidated statements of operations, and was calculated as follows: (In thousands) 2023 Notes Partial Repurchase Net carrying amount of the liability component associated with the 2023 Notes Partial Repurchase $ 414,401 Less: Cash consideration allocated to the liability component (407,449) Gain from the 2023 Notes Partial Repurchase $ 6,952
Schedule of Interest Expense	The following tables sets forth the interest expense related to each series of notes: Three Months Ended July 31, Six Months Ended July 31, (In thousands) 2021 2020 2021 2020 2023 Notes: Coupon interest expense $ 971 $ 1,174 $ 1,942 $ 2,755 Amortization of debt discount (conversion option) 8,379 9,604 16,335 22,022 Amortization of debt issuance costs 327 375 637 860 Total interest expense related to the 2023 Notes $ 9,677 $ 11,153 $ 18,914 $ 25,637 2025 Notes: Coupon interest expense $ 2,426 $ 2,426 $ 4,852 $ 4,852 Amortization of debt discount (conversion option) 8,127 7,649 15,784 14,961 Amortization of debt issuance costs 224 210 435 411 Total interest expense related to the 2025 Notes $ 10,777 $ 10,285 $ 21,071 $ 20,224 2026 Notes: Coupon interest expense $ 458 $ — $ 458 $ — Amortization of debt discount (conversion option) 2,960 — 2,960 — Amortization of debt issuance costs 133 — 133 — Total interest expense related to the 2026 Notes $ 3,551 $ — $ 3,551 $ — 2027 Notes: Coupon interest expense $ 3,558 $ 2,174 $ 7,116 $ 2,174 Amortization of debt discount (conversion option) 10,643 6,230 20,659 6,230 Amortization of debt issuance costs 433 254 841 254 Total interest expense related to the 2027 Notes $ 14,634 $ 8,658 $ 28,616 $ 8,658
Other Key Terms and Premiums Paid for Capped Calls	The following table sets forth other key terms and premiums paid for the Capped Calls related to each series of notes: Capped Calls Entered into in Connection with the Issuance of the 2023 and 2025 Notes Capped Calls Entered into in Connection with the Issuance of the 2027 Notes Initial strike price, subject to certain adjustments $ 148.30 $ 255.34 Cap price, subject to certain adjustments $ 232.62 $ 378.28 Total premium paid (in thousands) $ 274,275 $ 137,379

Stock Compensation Plans and _2

Stock Compensation Plans and Stockholders' Equity (Tables)	6 Months Ended
	Jul. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Stock Option and RSU Award Activity	The following table summarizes the stock option, restricted stock unit (“RSU”) and performance unit (“PSU”) activity under our 2012 Equity Incentive Plan during the six months ended July 31, 2021: Options Outstanding RSUs and PSUs Shares Weighted- Weighted- Aggregate Intrinsic Value (1) Shares (in years) (in thousands) Balances as of January 31, 2021 418,743 $ 11.37 5.85 $ 64,342 11,236,903 Additional shares authorized Options granted (2) 41,772 16.83 Options exercised (101,264) 11.62 Options forfeited and expired (19,438) 13.25 RSUs and PSUs granted 6,099,575 RSUs and PSUs vested (2,116,750) RSUs and PSUs forfeited and canceled (1,514,377) Balances as of July 31, 2021 339,813 $ 11.87 5.81 $ 44,215 13,705,351 Vested and expected to vest 333,176 $ 11.85 5.77 $ 43,357 12,793,290 Exercisable as of July 31, 2021 165,472 $ 11.12 4.16 $ 21,654 _________________________ (1) The intrinsic value is calculated as the difference between the exercise price of the underlying stock option award and the closing market price of our common stock as of July 31, 2021. (2) All options granted were equity awards assumed in connection with the TruSTAR acquisition.
Schedule of Unrecognized Compensation Costs	The following table presents unrecognized compensation cost related to stock options, RSUs, PSUs and restricted stock awards (“RSA”) as of July 31, 2021: Unrecognized Compensation Cost Weighted-Average Remaining Contractual Term Weighted-Average Grant Date Fair Value Per Share Stock options $ 16,650 1.5 $ 105.32 RSUs 1,554,528 2.6 143.86 PSUs 119,973 1.2 155.53 RSAs 36,113 1.9 121.20 Total unrecognized compensation cost $ 1,727,264
Schedule of RSA Activity	The following table summarizes our RSA activity during the six months ended July 31, 2021: Shares Outstanding as of January 31, 2021 485,683 RSAs issued in connection with acquisition 10,932 RSAs vested (146,369) RSAs forfeited and canceled (1,400) Outstanding as of July 31, 2021 348,846

Revenues, Accounts Receivable_2

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations, Revenue from Contract with Customer (Tables)	6 Months Ended
	Jul. 31, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents disaggregated revenues by major product or service type: Three Months Ended July 31, Six Months Ended July 31, (In thousands) 2021 2020 2021 2020 Revenues Cloud services $ 217,422 $ 125,870 $ 411,380 $ 238,022 License 219,600 176,814 362,881 325,199 Maintenance and services 168,721 188,974 333,533 362,514 Total revenues $ 605,743 $ 491,658 $ 1,107,794 $ 925,735
Revenue from External Customers by Geographic Areas	Revenues by geography are based on the shipping address of the customer. The following table presents our revenues by geographic region: Three Months Ended July 31, Six Months Ended July 31, (In thousands) 2021 2020 2021 2020 United States $ 416,581 $ 328,374 $ 763,282 $ 611,506 International 189,162 163,284 344,512 314,229 Total revenues $ 605,743 $ 491,658 $ 1,107,794 $ 925,735
Schedule of Revenue by Channel Partners	The following table presents revenues by channel partners representing 10% or more of total revenues: Three Months Ended July 31, Six Months Ended July 31, 2021 2020 2021 2020 Channel Partner A 26 % 29 % 27 % 29 % Channel Partner B 14 % 14 % 14 % 14 %
Schedule Of Accounts Receivable by Channel Partners	The following table presents total current and non-current accounts receivable by channel partners representing 10% or more of total current and non-current accounts receivable: July 31, 2021 January 31, 2021 Channel Partner A 17 % 26 % Channel Partner B 9 % 9 %

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	6 Months Ended
	Jul. 31, 2021
Earnings Per Share [Abstract]
Schedule of computation of historical basic and diluted net loss per share	The following table sets forth the computation of historical basic and diluted net loss per share: Three Months Ended July 31, Six Months Ended July 31, (In thousands, except per share amounts) 2021 2020 2021 2020 Numerator: Net loss $ (383,951) $ (261,322) $ (854,952) $ (566,901) Denominator: Weighted-average common shares outstanding 164,374 159,697 164,005 159,021 Less: Weighted-average unvested common shares subject to repurchase or forfeiture (356) (745) (390) (780) Weighted-average shares used to compute net loss per share, basic and diluted 164,018 158,952 163,615 158,241 Net loss per share, basic and diluted $ (2.34) $ (1.64) $ (5.23) $ (3.58)
Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive	Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows: As of July 31, (In thousands) 2021 2020 Shares subject to outstanding common stock options 340 504 Shares subject to outstanding RSUs, PSUs and RSAs 14,054 12,450 Employee stock purchase plan 1,601 341 Shares underlying the conversion spread in the convertible senior notes — 2,148 Total 15,995 15,443

Description of the Business a_4

Description of the Business and Significant Accounting Policies Revenue Recognition (Details)	6 Months Ended
	Jul. 31, 2021segment
Segments
Number of operating segments	1
Minimum
Revenue Recognition
Accounts receivable payment terms	30 days
Maximum
Revenue Recognition
Accounts receivable payment terms	60 days

Investments and Fair Value Me_3

Investments and Fair Value Measurements - Fair Value of Financial Assets (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	$ 319,490	$ 87,847
Estimate of Fair Value Measurement | Recurring basis
Fair Value Measurements
Money market funds	1,401,221	933,058
Assets:
Cash and cash equivalents	1,431,683	933,058
Investments, current	267,035	87,847
Investments, non-current	21,993	0
Total	1,720,711	1,020,905
Estimate of Fair Value Measurement | Recurring basis | Level 1
Fair Value Measurements
Money market funds	1,401,221	933,058
Estimate of Fair Value Measurement | Recurring basis | Level 2
Fair Value Measurements
Money market funds	0	0
Estimate of Fair Value Measurement | Recurring basis | Level 3
Fair Value Measurements
Money market funds	0	0
US Treasury Securities | Estimate of Fair Value Measurement | Recurring basis
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	20,129	75,068
US Treasury Securities | Estimate of Fair Value Measurement | Recurring basis | Level 1
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	0	0
US Treasury Securities | Estimate of Fair Value Measurement | Recurring basis | Level 2
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	20,129	75,068
US Treasury Securities | Estimate of Fair Value Measurement | Recurring basis | Level 3
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	0	0
Corporate Bonds | Estimate of Fair Value Measurement | Recurring basis
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	132,268	12,779
Corporate Bonds | Estimate of Fair Value Measurement | Recurring basis | Level 1
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	0	0
Corporate Bonds | Estimate of Fair Value Measurement | Recurring basis | Level 2
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	132,268	12,779
Corporate Bonds | Estimate of Fair Value Measurement | Recurring basis | Level 3
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	0	0
Commercial Paper | Estimate of Fair Value Measurement | Recurring basis
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	167,093	0
Commercial Paper | Estimate of Fair Value Measurement | Recurring basis | Level 1
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	0	0
Commercial Paper | Estimate of Fair Value Measurement | Recurring basis | Level 2
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	167,093	0
Commercial Paper | Estimate of Fair Value Measurement | Recurring basis | Level 3
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	$ 0	$ 0

Investments and Fair Value Me_4

Investments and Fair Value Measurements - Amortized Cost to Fair Value Reconciliation (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Debt Securities, Available-for-sale
Cash and cash equivalents, amortized cost	$ 2,231,165	$ 1,771,064
Investments, amortized cost	319,636	87,797
Investments, unrealized gains	0	50
Investments, unrealized losses	(146)	0
Investments, fair value	319,490	87,847
Investments, Current | US Treasury Securities
Debt Securities, Available-for-sale
Investments, amortized cost	20,134	75,032
Investments, unrealized gains	0	36
Investments, unrealized losses	(5)	0
Investments, fair value	20,129	75,068
Investments, Current | Corporate Bonds
Debt Securities, Available-for-sale
Investments, amortized cost	104,579	12,765
Investments, unrealized gains	0	14
Investments, unrealized losses	(69)	0
Investments, fair value	104,510	$ 12,779
Investments, Current | Commercial Paper
Debt Securities, Available-for-sale
Investments, amortized cost	142,454
Investments, unrealized gains	0
Investments, unrealized losses	(58)
Investments, fair value	142,396
Investments, Non-current | Corporate Bonds
Debt Securities, Available-for-sale
Investments, amortized cost	22,005
Investments, unrealized gains	0
Investments, unrealized losses	(12)
Investments, fair value	21,993
Corporate Bonds
Debt Securities, Available-for-sale
Cash and cash equivalents, amortized cost	5,766
Cash and cash equivalents, unrealized gains	0
Cash and cash equivalents, unrealized losses	(1)
Cash and cash equivalents, fair value	5,765
Commercial Paper
Debt Securities, Available-for-sale
Cash and cash equivalents, amortized cost	24,698
Cash and cash equivalents, unrealized gains	0
Cash and cash equivalents, unrealized losses	(1)
Cash and cash equivalents, fair value	$ 24,697

Investments and Fair Value Me_5

Investments and Fair Value Measurements - Securities in Unrealized Loss Position (Details) $ in Thousands	Jul. 31, 2021USD ($)
Fair Value
Less than 12 Months	$ 313,422
12 Months or Greater	0
Total	313,422
Unrealized Losses
Less than 12 Months	(146)
12 Months or Greater	0
Total	(146)
US Treasury Securities
Fair Value
Less than 12 Months	20,130
12 Months or Greater	0
Total	20,130
Unrealized Losses
Less than 12 Months	(5)
12 Months or Greater	0
Total	(5)
Corporate Bonds
Fair Value
Less than 12 Months	126,200
12 Months or Greater	0
Total	126,200
Unrealized Losses
Less than 12 Months	(82)
12 Months or Greater	0
Total	(82)
Commercial Paper
Fair Value
Less than 12 Months	167,092
12 Months or Greater	0
Total	167,092
Unrealized Losses
Less than 12 Months	(59)
12 Months or Greater	0
Total	$ (59)

Investments and Fair Value Me_6

Investments and Fair Value Measurements - Contractual Maturities (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Fair Value Disclosures [Abstract]
Due within one year	$ 297,498
Due within one to two years	21,992
U.S. treasury securities, corporate bonds and commercial paper	$ 319,490	$ 87,847

Investments and Fair Value Me_7

Investments and Fair Value Measurements - Equity Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Investments, Debt and Equity Securities and Fair Value Disclosures [Abstract]
Equity investments without readily determinable fair values	$ 10,777	$ 10,244
Equity investments under the equity method of accounting	4,119	3,484
Total	$ 14,896	$ 13,728

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jan. 31, 2021
Lessee, Lease, Description
Loss on lease termination	$ 52,524	$ 0
San Jose Lease
Lessee, Lease, Description
Loss on lease termination	$ 55,200
Current and non-current operating lease liabilities			$ 155,500

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Property, Plant and Equipment
Property and equipment, gross	$ 271,013	$ 308,521
Less: accumulated depreciation and amortization	(138,172)	(125,741)
Property and equipment, net	132,841	182,780
Computer equipment and software
Property, Plant and Equipment
Property and equipment, gross	75,564	70,628
Furniture and fixtures
Property, Plant and Equipment
Property and equipment, gross	28,626	33,142
Leasehold and building improvements
Property, Plant and Equipment
Property and equipment, gross	135,990	180,956
Capitalized software development costs
Property, Plant and Equipment
Property and equipment, gross	30,833	23,795
Leasehold improvements not in service
Property, Plant and Equipment
Property and equipment, gross		25,400
Software development costs under development
Property, Plant and Equipment
Property and equipment, gross	$ 5,500	$ 16,700

Property and Equipment - Narrat

Property and Equipment - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense on Property and Equipment, net	$ 10	$ 7.7	$ 20.9	$ 13.5

Property and Equipment - Sche_2

Property and Equipment - Schedule of Property and Equipment by Location (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Property, Plant and Equipment
Long-lived assets	$ 371,907	$ 539,076
United States
Property, Plant and Equipment
Long-lived assets	312,907	476,575
United Kingdom
Property, Plant and Equipment
Long-lived assets	47,598	50,460
Other International
Property, Plant and Equipment
Long-lived assets	$ 11,402	$ 12,041

Acquisition, Goodwill and Int_3

Acquisition, Goodwill and Intangible Assets - Narrative (Details) - USD ($)	May 28, 2021	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020	Jan. 31, 2021
Business Acquisition
Goodwill		$ 1,401,628,000		$ 1,401,628,000		$ 1,334,888,000
Impairments to goodwill				0	$ 0
Amortization of intangible assets		$ 14,900,000	$ 14,600,000	$ 29,700,000	$ 29,300,000
TruSTAR Technology Inc.
Business Acquisition
Percentage of voting interests acquired	100.00%
Purchase price	$ 82,100,000
Purchase price paid in cash	81,200,000
Acquired fair value of finite-lived intangible assets	16,500,000
Acquired liabilities	1,100,000
Goodwill	$ 66,700,000

Acquisition, Goodwill and Int_4

Acquisition, Goodwill and Intangible Assets - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	May 28, 2021	Jul. 31, 2021	Jan. 31, 2021
Finite-Lived Intangible Assets
Finite-lived intangible assets acquired	$ 16,500
Developed technology
Finite-Lived Intangible Assets
Finite-lived intangible assets acquired	$ 10,100
Acquired intangible assets, remaining useful life	36 months	52 months	57 months
Customer relationships
Finite-Lived Intangible Assets
Finite-lived intangible assets acquired	$ 6,400
Acquired intangible assets, remaining useful life	36 months	35 months	41 months

Acquisition, Goodwill and Int_5

Acquisition, Goodwill and Intangible Assets - Goodwill Rollforward (Details) $ in Thousands	6 Months Ended
	Jul. 31, 2021USD ($)
Goodwill [Roll Forward]
Balance as of January 31, 2021	$ 1,334,888
Goodwill acquired	66,740
Balance as of July 31, 2021	$ 1,401,628

Acquisition, Goodwill and Int_6

Acquisition, Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	May 28, 2021	Jul. 31, 2021	Jan. 31, 2021
Finite-Lived Intangible Assets
Gross Fair Value		$ 383,504	$ 367,079
Accumulated Amortization		(190,600)	(160,926)
Total		192,904	206,153
Developed technology
Finite-Lived Intangible Assets
Gross Fair Value		283,400	273,349
Accumulated Amortization		(146,915)	(127,072)
Total		$ 136,485	$ 146,277
Acquired intangible assets, remaining useful life	36 months	52 months	57 months
Customer relationships
Finite-Lived Intangible Assets
Gross Fair Value		$ 92,710	$ 86,310
Accumulated Amortization		(37,884)	(28,778)
Total		$ 54,826	$ 57,532
Acquired intangible assets, remaining useful life	36 months	35 months	41 months
Other acquired intangible assets
Finite-Lived Intangible Assets
Gross Fair Value		$ 7,394	$ 7,420
Accumulated Amortization		(5,801)	(5,076)
Total		$ 1,593	$ 2,344
Acquired intangible assets, remaining useful life		14 months	19 months

Acquisition, Goodwill and Int_7

Acquisition, Goodwill and Intangible Assets - Expected Future Amortization Expense (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Business Combinations [Abstract]
Remaining fiscal 2022	$ 28,135
Fiscal 2023	55,448
Fiscal 2024	48,892
Fiscal 2025	33,010
Fiscal 2026	17,058
Thereafter	10,361
Total	$ 192,904	$ 206,153

Convertible Senior Notes - Narr

Convertible Senior Notes - Narrative (Details) $ / shares in Units, $ in Thousands	Jul. 09, 2021USD ($)$ / shares	Jun. 21, 2021$ / shares	Jun. 05, 2020USD ($)$ / shares	Sep. 21, 2018USD ($)$ / shares	Jul. 31, 2021USD ($)trading_day$ / shares	Jul. 31, 2020USD ($)	Jun. 02, 2020$ / shares	Sep. 18, 2018$ / shares
Debt Instrument
Proceeds from the issuance of convertible senior notes, net of issuance costs					$ 982,749	$ 1,246,544
2023 Notes, Liability component
Debt Instrument
Effective discount rate			6.25%
2023 Notes, Liability component | Convertible Senior Notes
Debt Instrument
Partial repurchase			$ 407,400
2023 Notes, Equity component | Convertible Senior Notes
Debt Instrument
Partial repurchase			283,600
2023 Notes, Payment of interest accrued | Convertible Senior Notes
Debt Instrument
Partial repurchase			500
2023 Notes, Partial repurchase | Convertible Senior Notes
Debt Instrument
Partial repurchase			691,600
Convertible Senior Notes
Debt Instrument
Consecutive trading days threshold | trading_day					10
Measurement period, business days | trading_day					5
Percentage of stock trigger price for measurement period					98.00%
Convertible senior notes repurchase price percentage					100.00%
Convertible Senior Notes | 2026 Notes
Debt Instrument
Principal amount	$ 1,000,000
Stated interest rate	0.75%
Proceeds from the issuance of convertible senior notes, net of issuance costs	$ 981,700
Conversion ratio	0.00625
Initial conversion price (in dollars per share) | $ / shares	$ 160				$ 160
Initial conversion price premium, percent		30.00%
Share price measurement period		10 days
Share price (in dollars per share) | $ / shares		$ 123.08
Trading days threshold | trading_day					20
Consecutive trading days threshold | trading_day					30
Convertible senior notes repurchase price percentage					100.00%
Effective interest rate					8.37%
Aggregate principal outstanding					$ 1,000,000
Convertible Senior Notes | 2026 Notes | Level 3
Debt Instrument
Convertible senior notes, fair value					710,000
Convertible Senior Notes | 2026 Notes | Liability
Debt Instrument
Issuance costs	$ 12,900
Convertible Senior Notes | 2026 Notes | Additional paid-in capital
Debt Instrument
Equity component					293,000
Issuance costs					$ 5,400
Convertible Senior Notes | SL Notes
Debt Instrument
Percentage of stock trigger price					140.00%
Convertible Senior Notes | 2027 Notes
Debt Instrument
Principal amount			$ 1,270,000
Stated interest rate			1.125%
Option to purchase additional amount			$ 165,000
Proceeds from the issuance of convertible senior notes, net of issuance costs			$ 1,250,000
Conversion ratio			0.0039164
Initial conversion price (in dollars per share) | $ / shares			$ 255.34		$ 255.34
Initial conversion price premium, percent							35.00%
Share price (in dollars per share) | $ / shares							$ 189.14
Effective interest rate					6.26%
Aggregate principal outstanding					$ 1,265,000
Convertible Senior Notes | 2027 Notes | Level 2
Debt Instrument
Convertible senior notes, fair value					1,240,000
Convertible Senior Notes | 2027 Notes | Liability
Debt Instrument
Issuance costs			$ 14,200
Convertible Senior Notes | 2027 Notes | Additional paid-in capital
Debt Instrument
Equity component					347,400
Issuance costs					$ 5,400
Convertible Senior Notes | 2023 Notes
Debt Instrument
Principal amount				$ 1,270,000
Stated interest rate				0.50%
Option to purchase additional amount				$ 165,000
Conversion ratio				0.0067433
Initial conversion price (in dollars per share) | $ / shares				$ 148.30	$ 148.30
Initial conversion price premium, percent								27.50%
Share price (in dollars per share) | $ / shares								$ 116.31
Effective interest rate					5.65%
Aggregate principal outstanding			776,700		$ 776,661
Convertible Senior Notes | 2023 Notes | Level 2
Debt Instrument
Convertible senior notes, fair value					910,000
Convertible Senior Notes | 2023 Notes | Liability
Debt Instrument
Issuance costs				$ 10,400
Convertible Senior Notes | 2023 Notes | Additional paid-in capital
Debt Instrument
Equity component					266,900
Issuance costs					$ 2,800
Convertible Senior Notes | 2023 Notes, Partial repurchase
Debt Instrument
Aggregate principal outstanding			488,339
Debt Instrument, Repurchased Face Amount			(488,300)
Convertible Senior Notes | 2025 Notes
Debt Instrument
Principal amount				$ 862,500
Stated interest rate				1.125%
Option to purchase additional amount				$ 112,500
Conversion ratio				0.0067433
Initial conversion price (in dollars per share) | $ / shares				$ 148.30	$ 148.30
Initial conversion price premium, percent								27.50%
Share price (in dollars per share) | $ / shares								$ 116.31
Effective interest rate					6.22%
Aggregate principal outstanding					$ 862,500
Convertible Senior Notes | 2025 Notes | Level 2
Debt Instrument
Convertible senior notes, fair value					1,050,000
Convertible Senior Notes | 2025 Notes | Liability
Debt Instrument
Issuance costs				$ 6,500
Convertible Senior Notes | 2025 Notes | Additional paid-in capital
Debt Instrument
Equity component					237,200
Issuance costs					$ 2,500
Convertible Senior Notes | 2023 Notes and 2025 Notes
Debt Instrument
Proceeds from the issuance of convertible senior notes, net of issuance costs				$ 2,110,000
Convertible Senior Notes | 2023, 2025, and 2027 Notes
Debt Instrument
Trading days threshold | trading_day					20
Percentage of stock trigger price					130.00%
Convertible senior notes repurchase price percentage					100.00%
Convertible Senior Notes | 2023 Notes, Total prior to partial repurchase
Debt Instrument
Aggregate principal outstanding			$ 1,265,000
Fiscal quarter commencing after the fiscal quarter ending on January 31, 2019 | Convertible Senior Notes
Debt Instrument
Trading days threshold | trading_day					20
Consecutive trading days threshold | trading_day					30
Percentage of stock trigger price					130.00%
Fiscal quarter commencing after the fiscal quarter ending on January 31, 2019 | Convertible Senior Notes | 2023, 2025, and 2027 Notes
Debt Instrument
Consecutive trading days threshold | trading_day					30

Convertible Senior Notes - Sche

Convertible Senior Notes - Schedule of Carrying Amount of the Liability and Equity (Details) - Convertible Senior Notes - USD ($) $ in Thousands	Jul. 31, 2021	Jun. 05, 2020
2023 Notes
Liability component:
Principal amount	$ 776,661	$ 776,700
Unamortized discount	(75,382)
Unamortized issuance costs	(2,942)
Net carrying amount	698,337
2023 Notes, Total prior to partial repurchase
Liability component:
Principal amount		1,265,000
Unamortized discount		(184,336)
Unamortized issuance costs		(7,194)
Net carrying amount		1,073,470
2023 Notes, Partial repurchase
Liability component:
Principal amount		488,339
Unamortized discount		(71,161)
Unamortized issuance costs		(2,777)
Net carrying amount		$ 414,401
2025 Notes
Liability component:
Principal amount	862,500
Unamortized discount	(152,069)
Unamortized issuance costs	(4,185)
Net carrying amount	706,246
2026 Notes
Liability component:
Principal amount	1,000,000
Unamortized discount	(290,069)
Unamortized issuance costs	(12,908)
Net carrying amount	697,023
2027 Notes
Liability component:
Principal amount	1,265,000
Unamortized discount	(300,036)
Unamortized issuance costs	(12,221)
Net carrying amount	$ 952,743

Convertible Senior Notes - Sc_2

Convertible Senior Notes - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Debt Instrument
Amortization of debt discount and issuance costs			$ 57,784	$ 44,738
Convertible Senior Notes | 2023 Notes
Debt Instrument
Coupon interest expense	$ 971	$ 1,174	1,942	2,755
Amortization of debt discount (conversion option)	8,379	9,604	16,335	22,022
Amortization of debt discount and issuance costs	327	375	637	860
Total interest expense	9,677	11,153	18,914	25,637
Convertible Senior Notes | 2025 Notes
Debt Instrument
Coupon interest expense	2,426	2,426	4,852	4,852
Amortization of debt discount (conversion option)	8,127	7,649	15,784	14,961
Amortization of debt discount and issuance costs	224	210	435	411
Total interest expense	10,777	10,285	21,071	20,224
Convertible Senior Notes | 2026 Notes
Debt Instrument
Coupon interest expense	458	0	458	0
Amortization of debt discount (conversion option)	2,960	0	2,960	0
Amortization of debt discount and issuance costs	133	0	133	0
Total interest expense	3,551	0	3,551	0
Convertible Senior Notes | 2027 Notes
Debt Instrument
Coupon interest expense	3,558	2,174	7,116	2,174
Amortization of debt discount (conversion option)	10,643	6,230	20,659	6,230
Amortization of debt discount and issuance costs	433	254	841	254
Total interest expense	$ 14,634	$ 8,658	$ 28,616	$ 8,658

Convertible Senior Notes - Calc

Convertible Senior Notes - Calculation of Gain on Extinguishment of Convertible Senior Notes (Details) - USD ($) $ in Thousands	Jun. 05, 2020	Jul. 31, 2021	Jul. 31, 2020
Extinguishment of Convertible Senior Notes [Line Items]
Gain from the 2023 Notes Partial Repurchase		$ 0	$ 6,952
Convertible Senior Notes | 2023 Notes, Partial repurchase
Extinguishment of Convertible Senior Notes [Line Items]
Net carrying amount of the liability component associated with the 2023 Notes Partial Repurchase	$ 414,401
Less: Cash consideration allocated to the liability component	(407,449)
Gain from the 2023 Notes Partial Repurchase	$ 6,952

Convertible Senior Notes - Othe

Convertible Senior Notes - Other Key Terms and Premiums Paid for Capped Calls (Details) - Capped Calls - USD ($) $ / shares in Units, $ in Thousands	Jun. 05, 2020	Sep. 21, 2018
2023 Notes and 2025 Notes
Option Indexed to Issuer's Equity [Line Items]
Initial strike price, subject to certain adjustments (in dollars per share)		$ 148.30
Cap price, subject to certain adjustments (in dollars per share)		$ 232.62
Total premium paid		$ 274,275
2027 Notes
Option Indexed to Issuer's Equity [Line Items]
Initial strike price, subject to certain adjustments (in dollars per share)	$ 255.34
Cap price, subject to certain adjustments (in dollars per share)	$ 378.28
Total premium paid	$ 137,379

Stock Compensation Plans and _3

Stock Compensation Plans and Stockholders' Equity - Schedule of Award Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 31, 2021USD ($)$ / sharesshares	Jan. 31, 2021USD ($)$ / sharesshares
Options
Shares
Outstanding at the beginning of the period (in shares)	418,743
Options granted (in shares)	41,772
Options exercised (in shares)	(101,264)
Options forfeited and expired (in shares)	(19,438)
Outstanding at the end of the period (in shares)	339,813	418,743
Vested and expected to vest at the end of the period (in shares)	333,176
Exercisable at the end of the period (in shares)	165,472
Weighted-Average Exercise Price Per Share
Balances at the beginning of the period (in dollars per share) | $ / shares	$ 11.37
Options granted (in dollars per share) | $ / shares	16.83
Options exercised (in dollars per share) | $ / shares	11.62
Options forfeited and expired (in dollars per share) | $ / shares	13.25
Balances at the end of the period (in dollars per share) | $ / shares	11.87	$ 11.37
Vested and expected to vest at the end of the period (in dollars per share) | $ / shares	11.85
Exercisable at the end of the period (in dollars per share) | $ / shares	$ 11.12
Weighted-Average Remaining Contractual Term
Weighted- Average Remaining Contractual Term	5 years 9 months 21 days	5 years 10 months 6 days
Vested and expected to vest at the end of the period	5 years 9 months 7 days
Vested and exercisable at the end of the period	4 years 1 month 28 days
Aggregate Intrinsic Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $	$ 64,342
Options exercised (in dollars) | $
Outstanding at the end of the period (in dollars) | $	44,215	$ 64,342
Vested and expected to vest at the end of the period (in dollars) | $	43,357
Vested and exercisable at the end of the period (in dollars) | $	$ 21,654
RSUs
Number of Shares
Balances at the beginning of the period (in shares)	11,236,903
Restricted stock granted (in shares)	6,099,575
Restricted stock vested (in shares)	(2,116,750)
Restricted stock forfeited and canceled (in shares)	(1,514,377)
Balances at the end of the period (in shares)	13,705,351	11,236,903
Restricted stock vested and expected to vest at the end of the period (in shares)	12,793,290

Stock Compensation Plans and _4

Stock Compensation Plans and Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended	12 Months Ended
	Jul. 31, 2021	Jan. 31, 2021	Jun. 30, 2021
Stock Compensation Plans
Reversal of stock based compensation previously recognized		$ 10.8
Stock repurchase program, authorized amount			$ 1,000
Treasury stock acquired (in shares)	1,700,000
Treasury stock acquired, average cost per share (in dollars per share)	$ 138.90
Aggregate purchase price of treasury stock acquired	$ 229.5
Treasury stock acquired not settled (in shares)	262,000
Treasury stock acquired not settled	$ 37.3
PSUs
Stock Compensation Plans
Restricted stock granted (in shares)	516,686
Performance period	1 year
RSUs
Stock Compensation Plans
Restricted stock granted (in shares)	6,099,575
RSAs
Stock Compensation Plans
Restricted stock granted (in shares)	10,932
Minimum | PSUs
Stock Compensation Plans
Award vesting rights	0.00%
Vesting period	3 years
Maximum | PSUs
Stock Compensation Plans
Award vesting rights	200.00%
Vesting period	4 years
Additional award vesting rights	50.00%

Stock Compensation Plans and _5

Stock Compensation Plans and Stockholders' Equity - Unrecognized Compensation Costs (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jul. 31, 2021USD ($)$ / shares
Stock Compensation Plans
Total unrecognized compensation cost	$ 1,727,264
Options
Stock Compensation Plans
Total unrecognized compensation cost related to stock options	$ 16,650
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 6 months
Weighted-average grant date fair value of options granted (in dollars per share) | $ / shares	$ 105.32
RSUs
Stock Compensation Plans
Total unrecognized compensation cost related to other awards	$ 1,554,528
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 7 months 6 days
Weighted-average grant date fair value of awards granted (in dollars per share) | $ / shares	$ 143.86
PSUs
Stock Compensation Plans
Total unrecognized compensation cost related to other awards	$ 119,973
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 2 months 12 days
Weighted-average grant date fair value of awards granted (in dollars per share) | $ / shares	$ 155.53
RSAs
Stock Compensation Plans
Total unrecognized compensation cost related to other awards	$ 36,113
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 10 months 24 days
Weighted-average grant date fair value of awards granted (in dollars per share) | $ / shares	$ 121.20

Stock Compensation Plans and _6

Stock Compensation Plans and Stockholders' Equity - RSA Activity (Details) - RSAs	6 Months Ended
	Jul. 31, 2021shares
Stock Compensation Plans
Balances at the beginning of the period (in shares)	485,683
RSA issued in connection with acquisition (in shares)	10,932
RSAs vested (in shares)	(146,369)
RSAs forfeited and canceled (in shares)	(1,400)
Balances at the end of the period (in shares)	348,846

Revenues, Accounts Receivable_3

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Disaggregation of Revenue
Total revenues	$ 605,743	$ 491,658	$ 1,107,794	$ 925,735
Cloud services
Disaggregation of Revenue
Total revenues	217,422	125,870	411,380	238,022
License
Disaggregation of Revenue
Total revenues	219,600	176,814	362,881	325,199
Maintenance and services
Disaggregation of Revenue
Total revenues	$ 168,721	$ 188,974	$ 333,533	$ 362,514

Revenues, Accounts Receivable_4

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations - Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Concentration Risk
Revenues	$ 605,743	$ 491,658	$ 1,107,794	$ 925,735
United States
Concentration Risk
Revenues	416,581	328,374	763,282	611,506
International
Concentration Risk
Revenues	$ 189,162	$ 163,284	$ 344,512	$ 314,229

Revenues, Accounts Receivable_5

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations - Customer Concentration Risk (Details) - Customer concentration risk	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020	Jan. 31, 2021
Revenues | Customer One
Concentration Risk
Concentration risk, percentage	26.00%	29.00%	27.00%	29.00%
Revenues | Customer Two
Concentration Risk
Concentration risk, percentage	14.00%	14.00%	14.00%	14.00%
Accounts receivable | Customer One
Concentration Risk
Concentration risk, percentage			17.00%		26.00%
Accounts receivable | Customer Two
Concentration Risk
Concentration risk, percentage			9.00%		9.00%

Revenues, Accounts Receivable_6

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations, Deferred Revenue - Deferred Revenue (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Revenue from Contract with Customer [Abstract]
Recognition of deferred revenue from opening deferred balance	$ 610.7	$ 476.9

Revenues, Accounts Receivable_7

Revenues, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations - Remaining Performance Obligation (Details) $ in Millions	Jul. 31, 2021USD ($)
Segment Reporting [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 1,930
Revenue, Remaining Performance Obligation, Percentage	66.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-08-01
Disaggregation of Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 2,161	$ 1,213	$ 3,381	$ (456)

Net Loss Per Share - Schedule o

Net Loss Per Share - Schedule of Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Numerator
Net loss	$ (383,951)	$ (261,322)	$ (854,952)	$ (566,901)
Denominator
Weighted-average common shares outstanding (in shares)	164,374	159,697	164,005	159,021
Less: Weighted-average unvested common shares subject to repurchase or forfeiture (in shares)	(356)	(745)	(390)	(780)
Weighted-average shares used to compute net loss per share, basic and diluted (in shares)	164,018	158,952	163,615	158,241
Net loss per share
Net loss per share, basic and diluted (in dollars per share)	$ (2.34)	$ (1.64)	$ (5.23)	$ (3.58)

Net Loss Per Share - Potentiall

Net Loss Per Share - Potentially Dilutive Securities (Details) - shares shares in Thousands	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Potentially dilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	15,995	15,443
Shares subject to outstanding common stock options
Potentially dilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	340	504
Shares subject to outstanding RSUs, PSUs and RSAs
Potentially dilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	14,054	12,450
Employee stock purchase plan
Potentially dilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	1,601	341
Shares underlying the conversion spread in the convertible senior notes
Potentially dilutive securities
Antidilutive securities excluded from computation of earnings per share (in shares)	0	2,148

Net Loss Per Share - Net Loss P

Net Loss Per Share - Net Loss Per Share Conversion Shares (Details) shares in Millions	Jul. 31, 2021shares$ / shares	Jul. 31, 2021$ / shares	Jul. 09, 2021$ / shares	Jun. 05, 2020$ / shares	Sep. 21, 2018$ / shares
Potentially dilutive securities
Average market price of common stock (in dollars per share)		$ 128.02
Convertible Senior Notes
Potentially dilutive securities
Number of shares potentially converted | shares	22.3
Convertible Senior Notes | 2023 Notes
Potentially dilutive securities
Initial conversion price (in dollars per share)	$ 148.30	148.30			$ 148.30
Convertible Senior Notes | 2025 Notes
Potentially dilutive securities
Initial conversion price (in dollars per share)	148.30	148.30			$ 148.30
Convertible Senior Notes | 2026 Notes
Potentially dilutive securities
Initial conversion price (in dollars per share)	160	160	$ 160
Convertible Senior Notes | 2027 Notes
Potentially dilutive securities
Initial conversion price (in dollars per share)	$ 255.34	$ 255.34		$ 255.34