Splunk (SPLK) 10-Q 4 Dec 19 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Oct. 31, 2019	Nov. 26, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 31, 2019
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		155,969,418
Entity Central Index Key	0001353283
Amendment Flag	false
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Current assets:
Cash and cash equivalents	$ 873,470	$ 1,876,165
Investments, current	948,352	881,220
Accounts receivable, net	638,050	469,658
Prepaid expenses and other current assets	103,238	73,197
Deferred commissions, current	84,530	78,223
Total current assets	2,647,640	3,378,463
Investments, non-current	66,933	110,588
Operating lease right-of-use assets	278,261	0
Property and equipment, net	125,626	158,276
Intangible assets, net	248,997	91,622
Goodwill	1,278,456	503,388
Deferred commissions, non-current	67,842	64,766
Other assets	356,042	193,140
Total assets	5,069,797	4,500,243
Current liabilities:
Accounts payable	28,026	20,418
Accrued compensation	215,224	226,061
Accrued expenses and other liabilities	203,521	125,641
Deferred revenue, current	689,877	673,018
Total current liabilities	1,136,648	1,045,138
Convertible senior notes, net	1,693,951	1,634,474
Operating lease liabilities	246,977	0
Deferred revenue, non-current	165,723	204,929
Other liabilities, non-current	381	95,245
Total non-current liabilities	2,107,032	1,934,648
Total liabilities	3,243,680	2,979,786
Commitments and contingencies (Note 3)
Stockholders' equity:
Common stock: $0.001 par value; 1,000,000,000 shares authorized; 155,900,677 shares issued and outstanding at October 31, 2019, and 149,167,298 shares issued and outstanding at January 31, 2019	155	149
Accumulated other comprehensive loss	(3,161)	(2,506)
Additional paid-in capital	3,367,866	2,754,858
Accumulated deficit	(1,538,743)	(1,232,044)
Total stockholders' equity	1,826,117	1,520,457
Total liabilities and stockholders' equity	$ 5,069,797	$ 4,500,243

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Oct. 31, 2019	Jan. 31, 2019
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	155,900,867	149,167,298
Common stock, shares outstanding	155,900,867	149,167,298

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenues
Total revenues		$ 626,336	$ 480,983	$ 1,567,744	$ 1,180,925
Cost of revenues
Total cost of revenues	[1]	107,819	89,225	301,950	250,943
Gross profit		518,517	391,758	1,265,794	929,982
Operating expenses
Research and development	[1]	158,887	117,722	422,287	310,818
Sales and marketing	[1]	319,023	264,223	896,757	726,089
General and administrative	[1]	88,092	59,819	226,118	168,405
Total operating expenses	[1]	566,002	441,764	1,545,162	1,205,312
Operating loss		(47,485)	(50,006)	(279,368)	(275,330)
Interest and other income (expense), net
Interest income		12,612	8,571	45,373	15,322
Interest expense		(24,406)	(12,270)	(71,527)	(16,401)
Other income (expense), net		(215)	(186)	(1,408)	(657)
Total interest and other income (expense), net		(12,009)	(3,885)	(27,562)	(1,736)
Loss before income taxes		(59,494)	(53,891)	(306,930)	(277,066)
Income tax provision (benefit)		(1,855)	1,814	7,010	637
Net loss		$ (57,639)	$ (55,705)	$ (313,940)	$ (277,703)
Net loss per share:
Basic and diluted (in dollars per share)		$ (0.38)	$ (0.38)	$ (2.08)	$ (1.91)
Weighted-average shares outstanding:
Basic and diluted (in shares)		152,404	146,391	150,659	145,015
License
Revenues
Total revenues		$ 373,684	$ 279,603	$ 855,825	$ 619,246
Cost of revenues
Total cost of revenues	[1]	5,796	5,922	17,414	16,717
Maintenance and services
Revenues
Total revenues		252,652	201,380	711,919	561,679
Cost of revenues
Total cost of revenues	[1]	$ 102,023	$ 83,303	$ 284,536	$ 234,226
[1]	Amounts include stock-based compensation expense, as follows: Cost of revenues, $10,426 thousand and $8,867 thousand; Research and development, $45,003 thousand and $35,088 thousand; Sales and marketing, $50,743 thousand and $45,280 thousand; General and administrative, $26,680 thousand and $18,449 thousand for the three months ended October 31, 2019 and 2018, respectively. Amounts include stock-based compensation expense, as follows: Cost of revenues, $31,710 thousand and $26,618 thousand; Research and development, $126,722 thousand and $95,101 thousand; Sales and marketing, $150,018 thousand and $133,874 thousand; General and administrative, $70,478 thousand and $51,756 thousand for the nine months ended October 31, 2019 and 2018, respectively.

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Stock-based compensation			$ 378,928	$ 307,345
Cost of revenues
Stock-based compensation	$ 10,426	$ 8,867	31,710	26,618
Research and development
Stock-based compensation	45,003	35,088	126,722	95,101
Sales and marketing
Stock-based compensation	50,743	45,280	150,018	133,874
General and administrative
Stock-based compensation	$ 26,680	$ 18,449	$ 70,478	$ 51,756

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Net loss	$ (57,639)	$ (55,705)	$ (313,940)	$ (277,703)
Other comprehensive gain (loss):
Net unrealized gain on investments (net of tax)	1,002	(265)	2,044	442
Foreign currency translation adjustments	(679)	(1,588)	(2,699)	(5,181)
Total other comprehensive gain (loss)	323	(1,853)	(655)	(4,739)
Comprehensive loss	$ (57,316)	$ (57,558)	$ (314,595)	$ (282,442)

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Cash flows from operating activities
Net loss	$ (313,940)	$ (277,703)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation and amortization	46,079	37,946
Amortization of deferred commissions	75,078	55,592
Amortization of investment premiums (accretion of discounts)	(7,969)	(1,852)
Amortization of debt discount and issuance costs	59,477	8,491
Stock-based compensation	378,928	307,345
Deferred income taxes	(398)	(427)
Changes in operating assets and liabilities, net of acquisitions
Accounts receivable, net	(165,735)	100,873
Prepaid expenses and other assets	(190,037)	(62,784)
Deferred commissions	(84,461)	(80,716)
Accounts payable	(1,129)	6,771
Accrued compensation	(12,821)	36,577
Accrued expenses and other liabilities	18,966	10,498
Deferred revenue	(30,843)	28,475
Net Cash Provided by (Used in) Operating Activities	(228,805)	169,086
Cash flows from investing activities
Purchases of investments	(815,685)	(810,264)
Maturities of investments	805,971	525,126
Acquisitions, net of cash acquired	(576,296)	(394,910)
Purchases of property and equipment	(53,524)	(15,177)
Other investment activities	(3,750)	(5,119)
Net Cash Used in Investing Activities	(643,284)	(700,344)
Cash flows from financing activities
Proceeds from the exercise of stock options	624	1,695
Proceeds from employee stock purchase plan	34,482	24,201
Proceeds from the issuance of convertible senior notes, net of issuance costs	0	2,106,225
Purchase of capped calls	0	(274,275)
Taxes paid related to net share settlement of equity awards	(164,160)	(779)
Repayment of financing lease obligation	0	(1,862)
Net Cash Provided by (Used in) Financing Activities	(129,054)	1,855,205
Effect of exchange rate changes on cash and cash equivalents	(1,552)	(1,778)
Net increase (decrease) in cash and cash equivalents	(1,002,695)	1,322,169
Cash and cash equivalents at beginning of period	1,876,165	545,947
Cash and cash equivalents at end of period	873,470	1,868,116
Supplemental disclosures
Cash paid for income taxes	16,629	5,630
Cash paid for interest	15,761	6,161
Non-cash investing activities
Increase (decrease) in accrued purchases of property and equipment	11,853	(295)
Equity consideration for acquisitions	363,139	0
Costs related to issuance of convertible senior notes included in accounts payable and accrued expenses and other liabilities	$ 0	$ 930

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Accumulated other comprehensive loss	Accumulated deficit	Capped CallAdditional paid-in capital
Cumulative-effect adjustment from adoption of ASU | Accounting Standards Update 2016-02					$ 0
Cumulative-effect adjustment from adoption of ASU | Accounting Standards Update 2016-16					(596)
Balance, beginning of period at Jan. 31, 2018		$ 143	$ 2,086,893	$ 156	(955,871)
Issuance of restricted stock awards		1
Vesting of restricted stock units		4
Stock-based compensation			307,345
Issuance of common stock upon exercise of options			1,693
Fair value of replacement equity awards attributable to pre-acquisition service			15,776
Taxes paid related to net share settlement of equity awards			0
Issuance of common stock upon ESPP purchase			24,199
Equity component of convertible senior notes, net			498,841
Purchase of capped calls						$ (274,275)
Unrealized gain (loss) from investments				442
Net change in cumulative translation adjustments	$ (5,181)			(5,181)
Net loss	(277,703)				(277,703)
Balance, end of period at Oct. 31, 2018	1,421,867	148	2,660,472	(4,583)	(1,234,170)
Balance, beginning of period at Jul. 31, 2018		146	2,327,885	(2,730)	(1,178,465)
Issuance of restricted stock awards		0
Vesting of restricted stock units		2
Stock-based compensation			107,681
Issuance of common stock upon exercise of options			340
Fair value of replacement equity awards attributable to pre-acquisition service			0
Taxes paid related to net share settlement of equity awards			0
Issuance of common stock upon ESPP purchase			0
Equity component of convertible senior notes, net			498,841
Purchase of capped calls						(274,275)
Unrealized gain (loss) from investments				(265)
Net change in cumulative translation adjustments	(1,588)			(1,588)
Net loss	(55,705)				(55,705)
Balance, end of period at Oct. 31, 2018	1,421,867	148	2,660,472	(4,583)	(1,234,170)
Cumulative-effect adjustment from adoption of ASU | Accounting Standards Update 2016-02					7,241
Cumulative-effect adjustment from adoption of ASU | Accounting Standards Update 2016-16					0
Balance, beginning of period at Jan. 31, 2019	1,520,457	149	2,754,858	(2,506)	(1,232,044)
Issuance of restricted stock awards		1
Vesting of restricted stock units		2
Stock-based compensation			378,928
Issuance of common stock upon exercise of options			622
Fair value of replacement equity awards attributable to pre-acquisition service			18,567
Taxes paid related to net share settlement of equity awards			(164,160)
Issuance of common stock upon ESPP purchase			34,482
Equity component of convertible senior notes, net			0
Purchase of capped calls						0
Unrealized gain (loss) from investments				2,044
Net change in cumulative translation adjustments	(2,699)			(2,699)
Net loss	(313,940)				(313,940)
Balance, end of period at Oct. 31, 2019	1,826,117	155	3,367,866	(3,161)	(1,538,743)
Cumulative-effect adjustment from adoption of ASU | Accounting Standards Update 2016-02					0
Cumulative-effect adjustment from adoption of ASU | Accounting Standards Update 2016-16					0
Balance, beginning of period at Jul. 31, 2019		151	2,918,277	(3,484)	(1,481,104)
Issuance of restricted stock awards		1
Vesting of restricted stock units		0
Stock-based compensation			132,852
Issuance of common stock upon exercise of options			68
Fair value of replacement equity awards attributable to pre-acquisition service			18,567
Taxes paid related to net share settlement of equity awards			(46,467)
Issuance of common stock upon ESPP purchase			0
Equity component of convertible senior notes, net			0
Purchase of capped calls						$ 0
Unrealized gain (loss) from investments				1,002
Net change in cumulative translation adjustments	(679)			(679)
Net loss	(57,639)				(57,639)
Balance, end of period at Oct. 31, 2019	$ 1,826,117	$ 155	$ 3,367,866	$ (3,161)	$ (1,538,743)
Stock Issued During Period, Shares, Acquisitions		3	344,569

Description of the Business and

Description of the Business and Significant Accounting Policies	9 Months Ended
	Oct. 31, 2019
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 software solutions that enable organizations to gain real-time operational intelligence by harnessing the value of their data. Our offerings enable users to investigate, monitor, analyze and act on data at any scale. Our offerings address large and diverse data sets commonly referred to as big data. 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 transactions, customer and user behavior, and security threats. Our offerings help users derive new insights from data that can be used to, among other things, improve service levels, reduce operational costs, mitigate security risks, demonstrate and maintain compliance, and drive better business decisions. 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 2020, for example, refer to the fiscal year ending January 31, 2020. 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, 2019 was derived from audited financial statements, but does not include all disclosures required by GAAP. Therefore, these 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, 2019 , filed with the SEC on March 27, 2019 . 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 2020 . Use of Estimates The preparation of financial statements in conformity with U.S. 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 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. Segments We operate our business as one operating segment: the development and marketing of software solutions that enable our customers to gain real-time operational intelligence 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. Leases We determine if an arrangement contains a lease and the classification of that lease, if applicable, at the inception of a contract. We primarily lease our facilities under operating leases. Operating lease right-of-use assets and liabilities are recognized at the present value of the future lease payments at the lease commencement date. We calculate the operating lease right-of-use assets based on the corresponding lease liability adjusted for (i) payments made at or before the commencement date, (ii) initial direct costs we incur and (iii) tenant incentives under the lease. We do not account for renewals or early terminations unless we are reasonably certain to exercise these options at commencement. Operating lease expense is recognized on a straight-line basis over the lease term. We account for lease and non-lease components as a single lease component for our operating leases. We do not record leases with terms of 12 months or less on our condensed consolidated balance sheets. As the implicit rate for our operating leases is generally not determinable, we use our incremental borrowing rate as our discount rate at the lease commencement date to determine the present value of lease payments. We determine the discount rate of our leases by considering various factors, such as our credit rating, interest rates of similar debt instruments of entities with comparable credit ratings, the lease term and the currency in which the lease is denominated. Our discount rate was determined using a portfolio approach. Our operating lease assets are included in “Operating lease right-of-use assets” and the current and non-current portions of our operating lease liabilities are included in “Accrued expenses and other liabilities” and “Operating lease liabilities,” respectively, on our condensed consolidated balance sheets. As of October 31, 2019 , we had no finance leases. Refer to Note 4 “Leases” for details. Foreign Currency The functional currency of our foreign subsidiaries is their respective local currency, with the exception of our United Kingdom subsidiary, in which the functional currency is the U.S. dollar. Translation adjustments arising from the use of differing exchange rates from period to period are included in “Accumulated other comprehensive income (loss)” within the condensed consolidated statements of stockholders’ equity. Foreign currency transaction gains and losses are included in “Other income (expense), net.” All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Expenses are translated at the average exchange rate during the period. Equity transactions are translated using historical exchange rates. Revenue Recognition We generate revenues primarily in the form of software license and related maintenance fees, cloud services and other service fees. Licenses for on-premises software are either term or perpetual 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. Cloud services are provided on a subscription basis and give our customers access to our cloud solutions, which include related customer support. Other services include training and professional services that are not integral to the functionality of the licenses or cloud services. Revenue from on-premises licenses is generally recognized upfront upon transfer of control of the software, which occurs at delivery, or when the license term commences, if later. We recognize revenue from maintenance contracts ratably over the service period. Cloud services revenue is recognized ratably over the cloud service term. Training and professional services are provided either on a time and material basis, in which revenues are recognized as services are delivered, or over a contractual term, in which revenues are recognized ratably. 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, use or excise taxes. Our contracts with customers often contain multiple performance obligations. For these contracts, we account for individual performance obligations separately if they are distinct. 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 in the period we deliver products or provide services, or when we have an unconditional right to payment. Most of our multi-year on-premises term license contracts are invoiced annually and we generally recognize the total amount of the license revenues upfront and record a corresponding receivable, if we have an unconditional right to receive payment. Payment terms and conditions vary by contract type, although our terms generally include a requirement of 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 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 for licenses that we delivered prior to the license term commencing. Recently Adopted Accounting Standards Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements (or Other Significant Matters) Accounting Standards Update (“ASU”) No. 2018-15 (Subtopic 350-40), Intangibles - Goodwill and Other - Internal-Use Software: Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract The standard aligns the requirements for capitalizing implementation costs in a cloud computing arrangement with the requirements for capitalizing implementation costs incurred for an internal-use software license. We early adopted this new standard as of May 1, 2019. The adoption of this new standard did not have a material impact on our condensed consolidated financial statements. ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement The new standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. We adopted this new standard as of February 1, 2019. The adoption of this new standard did not have a material impact on our condensed consolidated financial statements. ASU No. 2016-02 (Topic 842), Leases The new standard supersedes the lease recognition requirements in Accounting Standards Codification (“ASC”) Topic 840, Leases. The standard requires an entity to recognize right-of-use assets and lease liabilities arising from a lease for operating leases, initially measured at the present value of the lease payments on the condensed consolidated balance sheets. The impact of such leases on the condensed consolidated statements of operations and cash flows will continue to be treated in a similar manner under current GAAP. The standard also requires additional qualitative and quantitative disclosures. In July 2018, ASU No. 2018-10, Codification Improvements to Topic 842, Leases, was issued which clarifies the codification or corrects unintended application of the guidance. We adopted this new standard as of February 1, 2019, using the cumulative-effect transition method recognized as of the date of initial application, as amended by ASU No. 2018-11. Under this method, we are not required to restate or disclose the effects of applying Topic 842 for comparative periods. As the result of our adoption, we recognized Operating lease right-of-use assets of $199.8 million and current and non-current Operating lease liabilities of $211.9 million on our condensed consolidated balance sheets at February 1, 2019. Additionally, we recorded a decrease to our opening accumulated deficit of approximately $7.2 million related to the derecognition of build-to-suit lease assets and liabilities. We have updated our accounting policies, systems, processes and internal controls, and have allocated internal and external resources to assist us during our implementation efforts. We applied the following practical expedients as permitted under Topic 842: (i) we elected to account for lease and non-lease components as a single lease component, and (ii) we elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward (1) our historical lease classification, (2) our assessment on whether a contract was or contains a lease, and (3) our initial direct costs for leases that existed prior to January 31, 2019. Recently Issued Accounting Pronouncements Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements (or Other Significant Matters) ASU No. 2016-13 (Topic 326), Financial Instruments - Credit Losses The amendments in this update require a financial asset (or a group of financial assets) measured at an amortized cost basis to be presented at the net amount expected to be collected. The new approach to estimating credit losses (referred to as the current expected credit losses model) applies to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans and held-to-maturity debt securities. First quarter of fiscal 2021, although early adoption is permitted. We are currently evaluating whether the adoption of this standard will have a material impact on our condensed consolidated financial statements.

Investments and Fair Value Meas

Investments and Fair Value Measurements	9 Months Ended
	Oct. 31, 2019
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 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: October 31, 2019 January 31, 2019 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Money market funds $ 136,491 $ — $ — $ 136,491 $ 46,311 $ — $ — $ 46,311 U.S. treasury securities — 846,169 — 846,169 — 980,940 — 980,940 Corporate bonds — 142,033 — 142,033 — — — — Commercial paper — 12,464 — 12,464 — — — — Other — — 4,500 4,500 — — 4,744 4,744 Reported as: Assets: Cash and cash equivalents $ 136,491 $ 46,311 Investments, current 948,352 881,220 Investments, non-current 56,814 104,463 Total $ 1,141,657 $ 1,031,994 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. We invest in U.S. treasury securities, corporate bonds and commercial paper, which we have classified as available-for-sale investments. The following table presents our available-for-sale investments as of October 31, 2019 : (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Investments, current: U.S. treasury securities $ 844,801 $ 1,382 $ (14 ) $ 846,169 Corporate bonds 89,383 338 (2 ) 89,719 Commercial paper 12,447 17 — 12,464 Investments, non-current: Corporate bonds 51,855 459 — 52,314 Total available-for-sale investments $ 998,486 $ 2,196 $ (16 ) $ 1,000,666 The following table presents our available-for-sale investments as of January 31, 2019 : (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Investments, current: U.S. treasury securities $ 881,206 $ 131 $ (117 ) $ 881,220 Investments, non-current: U.S. treasury securities 99,597 134 (11 ) 99,720 Total available-for-sale investments $ 980,803 $ 265 $ (128 ) $ 980,940 The following table presents the fair values and unrealized losses of our available-for-sale investments, classified by length of time that the securities have been in a continuous unrealized loss position: Less than 12 Months 12 Months or Greater Total (In thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses October 31, 2019 U.S. treasury securities $ 35,116 $ (14 ) $ — $ — $ 35,116 $ (14 ) Corporate bonds 7,505 (2 ) — — 7,505 (2 ) January 31, 2019 U.S. treasury securities $ 582,761 $ (128 ) $ — $ — $ 582,761 $ (128 ) As of October 31, 2019 and January 31, 2019 , we did not consider any of our investments to be other-than-temporarily impaired. The contractual maturities of our investments are as follows: (In thousands) October 31, 2019 Due within one year $ 948,352 Due within one to two years 52,314 Total $ 1,000,666 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 long-term 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 reported in “Investments, non-current” on our condensed consolidated balance sheets. The following table provides a summary of our equity investments: (In thousands) October 31, 2019 January 31, 2019 Equity investments without readily determinable fair values $ 8,244 $ 5,000 Equity investments under the equity method of accounting 1,875 1,125 Total $ 10,119 $ 6,125

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings We are 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. To date, there have not been any costs incurred in connection with such indemnification obligations; therefore, there is no accrual of such amounts as of October 31, 2019 . We are unable to estimate the maximum potential impact of these indemnifications on our future results of operations.

Leases

Leases	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Leases	Leases We have operating leases for office space and data centers. We use the office space for our business operations, sales, support and product development. Operating lease costs were $12.6 million and $35.0 million , excluding short-term leases and sublease income, which were immaterial, during the three and nine months ended October 31, 2019 , respectively. Rent expense recognized prior to our adoption of Topic 842 was $6.3 million and $18.5 million during the three and nine months ended October 31, 2018 , respectively. Our lease term and the discount rate related to our operating lease right-of-use assets and related lease liabilities are as follows: October 31, 2019 Weighted-average remaining lease term (in years) 8.18 Weighted-average discount rate 5.98 % As of October 31, 2019 , the maturity of lease liabilities under our non-cancelable operating leases were as follows: Fiscal Period (In thousands) Future Payments (1) Remaining fiscal 2020 $ 12,469 Fiscal 2021 54,971 Fiscal 2022 54,599 Fiscal 2023 47,639 Fiscal 2024 36,659 Thereafter 175,752 Total lease payments 382,089 Less imputed interest (84,173 ) Total current and non-current operating lease liabilities (2) $ 297,916 _________________________ (1) Amounts based on Topic 842, Leases, which we adopted on February 1, 2019. (2) The current portion of our operating lease liabilities is included in “Accrued expenses and other liabilities” on our condensed consolidated balance sheets. As of October 31, 2019 , we have entered into leases, primarily for office space that have not yet commenced, with future lease payments of $190.9 million that are not reflected in the above. These leases will commence between fiscal 2020 to 2021 with non-cancelable lease terms of 3 to 11 years. Prior to our adoption of Topic 842, we entered into a lease which was accounted for under build-to-suit lease accounting. As of January 31, 2019, $76.2 million of our build-to-suit lease asset was included in “Property and equipment, net” and the related $83.4 million financing lease obligation was included in “Other liabilities, non-current” on our condensed consolidated balance sheets. Upon the adoption of Topic 842, we derecognized our build-to-suit asset and related liabilities and recorded the difference of $7.2 million as a decrease to accumulated deficit at February 1, 2019. Under Topic 842, this lease was classified as an operating lease and was included within the operating lease right-of-use assets and liabilities on our condensed consolidated balance sheets as of October 31, 2019 . As of January 31, 2019 , future minimum rental payments under our non-cancelable operating leases obligation were as follows: Fiscal Period (In thousands) Future Payments (1) Fiscal 2020 $ 30,976 Fiscal 2021 48,195 Fiscal 2022 48,126 Fiscal 2023 44,018 Fiscal 2024 40,636 Thereafter 253,856 Total future minimum lease payments (2) $ 465,807 _________________________ (1) Amounts based on Topic 840, Leases. (2) We entered into sublease agreements for portions of our office space and the future rental income of $2.3 million from these agreements have been included as an offset to our future minimum rental payments. Supplemental Disclosures Nine Months Ended (In thousands) October 31, 2019 Cash paid for operating lease liabilities $ 29,208 Operating lease liabilities arising from obtaining right-of-use assets 99,167

Property and Equipment

Property and Equipment	9 Months Ended
	Oct. 31, 2019
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) October 31, 2019 January 31, 2019 Computer equipment and software $ 90,433 $ 79,887 Furniture and fixtures 24,900 18,872 Leasehold and building improvements (1) 127,142 79,064 Building (2) — 82,250 Property and equipment, gross 242,475 260,073 Less: accumulated depreciation and amortization (116,849 ) (101,797 ) Property and equipment, net $ 125,626 $ 158,276 _________________________ (1) Includes costs related to assets not yet placed into service of $45.3 million and $11.3 million , as of October 31, 2019 and January 31, 2019 , respectively. (2) This relates to the capitalization of construction costs under ASC Topic 840, Leases, in connection with our financing lease obligation, where we were considered the owner of the asset, for accounting purposes only, during the period ended January 31, 2019 . The corresponding long-term liability for this obligation is included in our condensed consolidated balance sheets under “Other liabilities, non-current.” As part of our adoption of Topic 842, we derecognized the assets and liabilities related to the financing lease obligation at February 1, 2019. Refer to Note 4 “Leases” for details. Depreciation and amortization expense of Property and equipment, net was $8.6 million and $6.7 million for the three months ended October 31, 2019 and 2018 , respectively, and $21.5 million and $19.8 million for the nine months ended October 31, 2019 and 2018 , respectively. Geographic Information The following table presents our property and equipment, net of depreciation and amortization, by geographic region: (In thousands) October 31, 2019 January 31, 2019 United States $ 110,709 $ 147,659 International 14,917 10,617 Total property and equipment, net $ 125,626 $ 158,276 Other than the United States, no other country represented 10% or more of our total property and equipment as of October 31, 2019 or January 31, 2019

Acquisitions, Goodwill and Inta

Acquisitions, Goodwill and Intangible Assets	9 Months Ended
	Oct. 31, 2019
Business Combinations [Abstract]
Acquisition, Goodwill and Intangible Assets	Acquisitions, Goodwill and Intangible Assets SignalFx On October 1, 2019, we acquired 100% of the voting equity interest of SignalFx, Inc. (“SignalFx”), a privately-held Delaware corporation that develops real-time monitoring solutions for cloud infrastructure, microservices and applications. This acquisition has been accounted for as a business combination. The total fair value of consideration transferred for this acquisition was $961.4 million , which consisted of $619.1 million in cash, $324.5 million for the fair value of 2,771,482 shares of our common stock issued and $17.8 million in fair value of replacement equity awards attributable to pre-acquisition service. The purchase price was allocated as follows: $173.7 million to identified intangible assets, $62.1 million to net assets acquired and $5.0 million to net deferred tax liabilities, with the excess $730.6 million of the purchase price over the fair value of net tangible and intangible assets acquired recorded as goodwill, allocated to our one 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 SignalFx have been included in our condensed consolidated financial statements from the date of purchase. Additionally, we recognized $7.0 million of acquisition-related costs as general and administrative expense on our condensed consolidated statements of operations. Per the terms of the merger agreement with SignalFx, certain unvested stock options, restricted stock units and restricted stock awards held by SignalFx employees were canceled and exchanged for replacement equity awards under our 2012 Equity Incentive Plan. Additionally, certain shares of stock issued pursuant to share-based compensation awards held by key employees of SignalFx were canceled and exchanged for replacement equity awards consisting of unregistered restricted shares of our common stock subject to vesting. The portion of the fair value of the replacement equity awards associated with pre-acquisition service of SignalFx’s employees represented a component of the total purchase consideration, as discussed above. The remaining fair value of $104.7 million of these issued awards, which are subject to the recipients’ continued service with us and thus excluded from the purchase price, will be recognized ratably as stock-based compensation expense over the required service period. We are still finalizing the allocation of the purchase price, which may be subject to change as additional information becomes available to us. 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 (months) Developed technology $ 108,800 84 Customer relationships 60,900 60 Other acquired intangible assets 4,000 36 Total intangible assets acquired $ 173,700 Omnition On September 13, 2019, we acquired 100% of the voting equity interest of Cloud Native Labs, Inc. (“Omnition”), a privately-held Delaware corporation that develops a platform for distributed tracing and application monitoring. This acquisition has been accounted for as a business combination. The total fair value of consideration transferred for this acquisition was $52.5 million , which consisted of $31.6 million in cash, $20.2 million for the fair value of 176,989 shares of our common stock issued and $0.7 million in fair value of replacement equity awards attributable to pre-acquisition service. The purchase price was allocated to $8.0 million of identified intangible assets, with the excess $44.5 million of the purchase price over the fair value of net tangible and intangible assets acquired recorded as goodwill, allocated to our one 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 Omnition which are not material, have been included in our condensed consolidated financial statements from the date of purchase. Per the terms of the merger agreement with Omnition, certain unvested stock options held by Omnition employees were canceled and exchanged for replacement stock options under our 2012 Equity Incentive Plan. Additionally, certain shares of stock issued pursuant to share-based compensation awards held by key employees of Omnition were canceled and exchanged for replacement equity awards subject to vesting. The portion of the fair value of the replacement equity awards associated with pre-acquisition service of Omition’s employees represented a component of the total purchase consideration, as discussed above. The remaining fair value of $36.6 million of these issued awards, which are subject to the recipients’ continued service with us and thus excluded from the purchase price, will be recognized ratably as stock-based compensation expense over the required service period. We are still finalizing the allocation of the purchase price, which may be subject to change as additional information becomes available to us. 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 (months) Developed technology $ 8,000 60 Total intangible assets acquired $ 8,000 VictorOps On June 22, 2018, we acquired 100% of the voting equity interest of VictorOps, Inc. (“VictorOps”), a privately-held Delaware corporation that develops incident management solutions for the IT and DevOps markets. This acquisition has been accounted for as a business combination. The total fair value of consideration transferred for this acquisition was $112.3 million , which consisted of $108.8 million in cash and $3.5 million in fair value of replacement equity awards attributable to pre-acquisition service. The purchase price was allocated as follows: $21.1 million to identified intangible assets, $1.7 million to net assets acquired, with the excess $89.5 million of the purchase price over the fair value of net tangible and intangible assets acquired recorded as goodwill, allocated to our one 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 VictorOps, which are not material, have been included in our condensed consolidated financial statements from the date of purchase. Additionally, we recognized $2.7 million of acquisition-related costs as general and administrative expense on our condensed consolidated statements of operations. Per the terms of the merger agreement with VictorOps, certain unvested stock options held by VictorOps employees were canceled and exchanged for replacement stock options to purchase shares of our common stock under our 2012 Equity Incentive Plan. Additionally, certain shares of stock issued pursuant to share-based compensation awards held by key employees of VictorOps were canceled and exchanged for unregistered restricted shares of our common stock subject to vesting. The portion of the fair value of the replacement equity awards associated with pre-acquisition service of VictorOps employees represented a component of the total purchase consideration, as discussed above. The remaining fair value of $7.6 million of these issued awards, which are subject to the recipients’ continued service with us and thus excluded from the purchase price, will be recognized ratably as stock-based compensation expense over the required service period. 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 (months) Developed technology $ 11,700 84 Customer relationships 9,400 60 Total intangible assets acquired $ 21,100 Phantom On April 6, 2018, we acquired 100% of the voting equity interest of Phantom Cyber Corporation (“Phantom”), a privately-held Delaware corporation that develops solutions for security orchestration, automation and response. This acquisition has been accounted for as a business combination. The total fair value of consideration transferred for this acquisition was $303.8 million , which consisted of $291.5 million in cash and $12.3 million in fair value of replacement equity awards attributable to pre-acquisition service. The purchase price was allocated as follows: $44.1 million to identified intangible assets, $10.5 million to net assets acquired, $3.3 million to net deferred tax liability, with the excess $252.5 million of the purchase price over the fair value of net tangible and intangible assets acquired recorded as goodwill, allocated to our one 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 Phantom, which are not material, have been included in our condensed consolidated financial statements from the date of purchase. Additionally, we recognized $3.3 million of acquisition-related costs as general and administrative expense on our condensed consolidated statements of operations. Per the terms of the merger agreement with Phantom, certain shares of stock issued pursuant to share-based compensation awards held by key employees of Phantom were canceled and exchanged for replacement equity awards consisting of unregistered restricted shares of our common stock subject to vesting. The portion of the fair value of the replacement equity awards associated with pre-acquisition service of Phantom’s key employees represented a component of the total purchase consideration, as discussed above. The remaining fair value of $62.2 million of these issued awards, which are subject to the recipients’ continued service with us and thus excluded from the purchase price, will be recognized ratably as stock-based compensation expense over the required service period. 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 (months) Developed technology $ 34,400 84 Customer relationships 9,700 60 Total intangible assets acquired $ 44,100 Unaudited Pro Forma Financial Information The following unaudited pro forma information presents the combined results of operations as if the acquisitions of SignalFx, Omnition, VictorOps and Phantom had been completed in the beginning of the applicable comparable prior annual reporting period. The unaudited pro forma results include adjustments primarily related to the following: (i) amortization associated with preliminary estimates for the acquired intangible assets; (ii) recognition of post-acquisition stock-based compensation; (iii) the effect of recording deferred revenue at fair value; (iv) elimination of historical interest expense related to debt extinguished in the acquisition of SignalFx; (v) the inclusion of acquisition costs as of the earliest period presented; and (vi) the associated tax impact of the acquisitions and these unaudited pro forma adjustments. The unaudited pro forma results do not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred from integrating these companies. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisitions had occurred at the beginning of the period presented, nor are they indicative of future results of operations: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 Revenues $ 631,348 $ 483,804 $ 1,584,999 $ 1,196,492 Net loss $ (83,162 ) $ (86,318 ) $ (413,940 ) $ (391,225 ) Goodwill Goodwill balances are presented below: (In thousands) Carrying Amount Balance as of January 31, 2019 $ 503,388 Goodwill acquired 775,068 Balance as of October 31, 2019 $ 1,278,456 There were no impairments to goodwill during the nine months ended October 31, 2019 or during prior periods. Intangible Assets Intangible assets subject to amortization realized from acquisitions as of October 31, 2019 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life (months) Developed technology $ 248,900 $ (77,259 ) $ 171,641 70 Customer relationships 81,810 (8,403 ) 73,407 56 Other acquired intangible assets 7,270 (3,321 ) 3,949 35 Total intangible assets subject to amortization $ 337,980 $ (88,983 ) $ 248,997 Intangible assets subject to amortization realized from acquisitions as of January 31, 2019 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life (months) Developed technology $ 132,100 $ (57,596 ) $ 74,504 52 Customer relationships 20,910 (4,523 ) 16,387 52 Other acquired intangible assets 3,270 (2,539 ) 731 9 Total intangible assets subject to amortization $ 156,280 $ (64,658 ) $ 91,622 Amortization expense from acquired intangible assets was $10.1 million and $7.1 million for the three months ended October 31, 2019 and 2018 , respectively, and $24.3 million and $18.1 million for the nine months ended October 31, 2019 and 2018 , respectively. The expected future amortization expense for acquired intangible assets as of October 31, 2019 is as follows: Fiscal Period (In thousands) Expected Amortization Expense Remaining fiscal 2020 $ 13,969 Fiscal 2021 54,437 Fiscal 2022 44,357 Fiscal 2023 40,617 Fiscal 2024 37,015 Thereafter 58,602 Total amortization expense $ 248,997

Convertible Senior Notes

Convertible Senior Notes	9 Months Ended
	Oct. 31, 2019
Debt Disclosure [Abstract]
Convertible Senior Notes	Convertible Senior Notes 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” and, together with the 2023 Notes, the “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 Notes are general senior, unsecured obligations of Splunk. The total proceeds from the issuance of the Notes was $2.11 billion , net of initial purchaser discounts and 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 will bear interest from September 21, 2018 at a rate of 0.50% per year and the 2025 Notes will 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 series of notes is 6.7433 shares of our common stock per $1,000 principal amount of 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 specified events. The initial conversion price of each series of 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 Notes was determined. The 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, in the case of the 2023 Notes, or June 15, 2025, in the case of the 2025 Notes, 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), 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, in the case of the 2023 Notes, and on or after June 15, 2025, in the case of the 2025 Notes, 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, at the option of the holder 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. It is our current intent to settle the conversions of principal amount of the Notes in cash and the remaining conversion value, if any, in shares of common stock. If we undergo a fundamental change (as defined in each indenture), 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 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 October 31, 2019 , the conditions allowing holders of the Notes to convert were not met. The Notes were therefore not convertible during the three months ended October 31, 2019 and were classified as long-term debt on our condensed consolidated balance sheets. We may not redeem the 2023 Notes prior to September 20, 2021, and we may not redeem the 2025 Notes prior to September 20, 2022. We may redeem for cash all or any portion of the 2023 Notes, at our option, on or after September 20, 2021, and we may redeem for cash all or any portion of the 2025 Notes, at our option, on or after September 20, 2022, 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. In accounting for the issuance of the Notes, we separated the Notes into liability and equity components. The carrying amounts of the liability components of the 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 Notes using the effective interest rate method. The carrying amounts of the equity components representing the conversion options were $266.9 million and $237.2 million for the 2023 Notes and 2025 Notes, respectively, and 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 to the liability and equity components of the Notes based on the proportion of the proceeds allocated to the debt and equity components. Issuance costs attributable to the liability component of the 2023 Notes and 2025 Notes were $10.4 million and $6.5 million , respectively. The issuance costs allocated to the liability component are amortized to interest expense over the contractual terms of the 2023 Notes and 2025 Notes at an effective interest rate of 5.65% and 6.22% , respectively. Issuance costs attributable to the equity component of the 2023 Notes and 2025 Notes were $2.8 million and $2.5 million , respectively, and are netted against the equity components representing the conversion option in additional paid-in capital. The net carrying amount of the liability and equity components for each of the Notes as of October 31, 2019 was as follows: (In thousands) 2023 Notes 2025 Notes Liability component: Principal amount $ 1,265,000 $ 862,500 Unamortized discount (213,656 ) (205,889 ) Unamortized issuance costs (8,339 ) (5,665 ) Net carrying amount $ 1,043,005 $ 650,946 Equity component, net of purchase discounts and issuance costs $ 264,129 $ 234,712 The following table sets forth the interest expense related to the Notes: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 2023 Notes: Coupon interest expense $ 1,581 $ 685 $ 4,743 $ 685 Amortization of debt discount (conversion option) 12,390 5,167 36,203 5,167 Amortization of debt issuance costs and purchase discounts 484 202 1,414 202 Total interest expense related to the 2023 Notes $ 14,455 $ 6,054 $ 42,360 $ 6,054 2025 Notes: Coupon interest expense $ 2,426 $ 1,051 $ 7,278 $ 1,051 Amortization of debt discount (conversion option) 7,308 3,039 21,276 3,039 Amortization of debt issuance costs and purchase discounts 201 84 585 84 Total interest expense related to the 2025 Notes $ 9,935 $ 4,174 $ 29,139 $ 4,174 As of October 31, 2019 , the total estimated fair values of the 2023 Notes and the 2025 Notes were approximately $1.37 billion and $955.7 million , respectively. The fair value was determined based on the closing trading price per $100 of the Notes as of the last day of trading for the period. The fair value of the Notes is primarily affected by the trading price of our common stock and market interest rates. The fair value of the Notes is considered a Level 2 measurement as they are not actively traded. Capped Calls In connection with the issuance of the Notes, including the initial purchasers’ exercise of the option to purchase additional Notes, we entered into privately negotiated capped call transactions with certain counterparties (the “Capped Calls”). The Capped Calls are expected to reduce potential dilution to our common stock upon conversion of the Notes and/or offset any cash payments that we are required to make in excess of the principal amount of converted Notes, as the case may be, with such reduction and/or offset subject to a cap. The Capped Calls have an initial strike price of $148.30 per share, subject to certain adjustments, which corresponds to the conversion option strike price in the Notes. The Capped Calls have a cap price equal to $232.62 per share, subject to certain adjustments. The Capped Calls are subject to adjustment upon the occurrence of 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. For accounting purposes, the Capped Calls are separate transactions, and not part of the terms of the Notes. As these transactions meet certain accounting criteria, the Capped Calls are recorded in stockholders’ equity and are not accounted for as derivatives. The premium paid for the purchase of the Capped Calls in the amount of $274.3 million

Stock Compensation Plans

Stock Compensation Plans	9 Months Ended
	Oct. 31, 2019
Share-based Payment Arrangement [Abstract]
Stock Compensation Plans	Stock Compensation Plans The following table summarizes the stock option, restricted stock unit (“RSU”), restricted stock award (“RSA”) and performance unit (“PSU”) award activity under our 2012 Equity Incentive Plan during the nine months ended October 31, 2019 : Options Outstanding RSUs and PSUs Outstanding Shares Available for Grant Shares Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value (1) Shares (in years) (in thousands) Balances as of January 31, 2019 17,082,136 409,039 $ 10.69 3.36 $ 46,693 13,098,607 Additional shares authorized 7,458,364 Options granted (799,461 ) 799,461 10.96 Options exercised (88,310 ) 7.27 Options forfeited and expired 6,631 (6,631 ) 18.67 RSUs and PSUs granted (3,435,771 ) 3,435,771 RSUs and PSUs vested (3,806,428 ) RSAs issued (421,533 ) Shares withheld related to net share settlement of RSUs and PSUs 1,374,238 RSUs and PSUs forfeited and canceled 1,330,586 (1,330,586 ) Balances as of October 31, 2019 22,595,190 1,113,559 $ 11.11 6.76 $ 121,211 11,397,364 Vested and expected to vest 1,113,457 $ 11.11 6.76 $ 121,204 10,786,291 Exercisable as of October 31, 2019 328,034 $ 11.07 2.55 $ 35,721 _________________________ (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 October 31, 2019 . Beginning in fiscal 2016, we have granted 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 earned and eligible to vest will be 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 four-year vesting period under the graded-vesting attribution method, and may be adjusted over the vesting period based on interim estimates of performance against the pre-set objectives. Additionally, beginning in fiscal 2019, our PSUs granted contain an additional market performance measure that can increase the number of shares earned by up to an additional 50% of the shares received based on the financial performance measure. As of October 31, 2019 , total unrecognized compensation cost related to stock options was $77.1 million , which is expected to be recognized over a weighted-average period of 2.6 years . As of October 31, 2019 , total unrecognized compensation cost was $866.9 million related to RSUs, which is expected to be recognized over the next 2.7 years . As of October 31, 2019 , total unrecognized compensation cost was $74.0 million related to PSUs, which is expected to be recognized over the next 2.4 years . The aggregate intrinsic value of options exercised during the nine months ended October 31, 2019 was $10.5 million . The weighted-average grant date fair value of RSUs granted was $124.25 per share during the nine months ended October 31, 2019 . The weighted-average grant date fair value of PSUs granted was $166.57 per share during the nine months ended October 31, 2019 . The following table summarizes our RSA activity during the nine months ended October 31, 2019 : Shares Outstanding as of January 31, 2019 824,605 RSAs issued 641,382 RSAs vested (450,422 ) RSAs forfeited and canceled (229 ) Outstanding as of October 31, 2019 1,015,336 The weighted-average grant date fair value of RSAs granted was $115.53 per share during the nine months ended October 31, 2019. As of October 31, 2019 , total unrecognized compensation cost related to RSAs was $86.5 million , which is expected to be recognized over the next 2.4 years

Revenues, Deferred Revenue and

Revenues, Deferred Revenue and Remaining Performance Obligations	9 Months Ended
	Oct. 31, 2019
Segment Reporting [Abstract]
Revenues, Deferred Revenue and Remaining Performance Obligations	Revenues, Deferred Revenue and Remaining Performance Obligations Disaggregation of Revenues The following table presents disaggregated revenues by major product or service type: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 Revenues License $ 373,684 $ 279,603 $ 855,825 $ 619,246 Maintenance, professional services and training 172,212 156,243 498,973 443,931 Cloud services 80,440 45,137 212,946 117,748 Total revenues $ 626,336 $ 480,983 $ 1,567,744 $ 1,180,925 Revenues by geography are based on the shipping address of the customer. The following table presents our revenues by geographic region: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 United States $ 489,911 $ 364,626 $ 1,154,477 $ 859,268 International 136,425 116,357 413,267 321,657 Total revenues $ 626,336 $ 480,983 $ 1,567,744 $ 1,180,925 Other than the United States, no other individual country exceeded 10% of total revenues during any of the periods presented. One channel partner represented 27% and 30% of total revenues during the three months ended October 31, 2019 and 2018 , respectively, and 29% and 31% during the nine months ended October 31, 2019 and 2018 . A second channel partner represented 30% and 23% of total revenues during the three months ended October 31, 2019 and 2018 , respectively, and 23% and 19% during the nine months ended October 31, 2019 and 2018 , respectively. 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 nine months ended October 31, 2019 or 2018 . As of October 31, 2019 , one channel partner represented 25% and a second channel partner represented 22% of total current and non-current accounts receivable. As of January 31, 2019 , one channel partner represented 29% and a second channel partner represented 10% of total current and non-current accounts receivable. Total current and non-current accounts receivable, net of allowance for doubtful accounts, was $942.2 million and $625.1 million as of October 31, 2019 and January 31, 2019 , respectively. Deferred Revenue Revenues recognized from amounts included in deferred revenue as of January 31, 2019 and 2018 were $534.7 million and $382.0 million during the nine months ended October 31, 2019 and 2018 , 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 $1.447 billion as of October 31, 2019 , of which we expect to recognize approximately 60% as revenue over the next 12 months and the remainder thereafter.

Income Taxes

Income Taxes	9 Months Ended
	Oct. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended October 31, 2019 and 2018 , we recorded an income tax benefit of $1.9 million and income tax expense of $1.8 million , respectively. The decrease in income tax expense for the three months ended October 31, 2019 was primarily due to the partial release of the valuation allowance as a result of our acquisitions of SignalFx and Omnition, partially offset by an increase in federal tax expense as a result of the Base Erosion Anti-Abuse Tax (“BEAT”). For the nine months ended October 31, 2019 and 2018 , we recorded income tax expense of $7.0 million and $0.6 million , respectively. The increase in income tax expense for the nine months ended October 31, 2019 was primarily due to an increase in federal tax expense as a result of BEAT, partially offset by an increase in the partial release of the valuation allowance this fiscal year as compared to prior fiscal year as a result of our acquisitions. During the three months ended October 31, 2019 , there were no material changes to our unrecognized tax benefits, and we do not expect to have any significant changes to unrecognized tax benefits through the end of the fiscal year. Because of our history of tax losses, all years remain open to tax audit.

Net Loss Per Share

Net Loss Per Share	9 Months Ended
	Oct. 31, 2019
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, preferred stock, 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 October 31, Nine Months Ended October 31, (In thousands, except per share amounts) 2019 2018 2019 2018 Numerator: Net loss $ (57,639 ) $ (55,705 ) $ (313,940 ) $ (277,703 ) Denominator: Weighted-average common shares outstanding 153,086 147,269 151,226 145,063 Less: Weighted-average unvested common shares subject to repurchase or forfeiture (682 ) (878 ) (567 ) (48 ) Weighted-average shares used to compute net loss per share, basic and diluted 152,404 146,391 150,659 145,015 Net loss per share, basic and diluted $ (0.38 ) $ (0.38 ) $ (2.08 ) $ (1.91 ) 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 October 31, (In thousands) 2019 2018 Shares subject to outstanding common stock options 1,114 445 Shares subject to outstanding RSUs, PSUs and RSAs 12,413 12,990 Employee stock purchase plan 360 398 Total 13,887 13,833 As 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. The conversion spread of 14.3 million shares will have a dilutive impact on diluted net income per share of common stock when the average market price of our common stock for a given period exceeds the conversion price of $148.30 per share.

Subsequent Event

Subsequent Event	9 Months Ended
	Oct. 31, 2019
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On November 1, 2019, we acquired Streamlio, Inc., a privately-held Delaware corporation which specializes in designing and operating streaming data solutions, in exchange for total consideration with fair value of approximately $24.0 million . The acquisition will be accounted for as a business combination and, accordingly, the total purchase price will be allocated to the tangible and intangible assets acquired and the liabilities assumed based on their respective fair values on the acquisition date. We have not yet determined the purchase price allocation for the transaction.

Description of the Business a_2

Description of the Business and Significant Accounting Policies (Policies)	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Business Description and Basis of Presentation	Business Splunk Inc. (“we,” “us,” “our”) provides innovative software solutions that enable organizations to gain real-time operational intelligence by harnessing the value of their data. Our offerings enable users to investigate, monitor, analyze and act on data at any scale. Our offerings address large and diverse data sets commonly referred to as big data. 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 transactions, customer and user behavior, and security threats. Our offerings help users derive new insights from data that can be used to, among other things, improve service levels, reduce operational costs, mitigate security risks, demonstrate and maintain compliance, and drive better business decisions. We were incorporated in California in October 2003 and reincorporated in Delaware in May 2006.
Fiscal Year	Fiscal Year Our fiscal year ends on January 31. References to fiscal 2020, for example, refer to the fiscal year ending January 31, 2020.
Basis of Presentation	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, 2019 was derived from audited financial statements, but does not include all disclosures required by GAAP. Therefore, these 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, 2019 , filed with the SEC on March 27, 2019 . 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 2020 .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. 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 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.
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 operational intelligence 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.
Leases	Leases We determine if an arrangement contains a lease and the classification of that lease, if applicable, at the inception of a contract. We primarily lease our facilities under operating leases. Operating lease right-of-use assets and liabilities are recognized at the present value of the future lease payments at the lease commencement date. We calculate the operating lease right-of-use assets based on the corresponding lease liability adjusted for (i) payments made at or before the commencement date, (ii) initial direct costs we incur and (iii) tenant incentives under the lease. We do not account for renewals or early terminations unless we are reasonably certain to exercise these options at commencement. Operating lease expense is recognized on a straight-line basis over the lease term. We account for lease and non-lease components as a single lease component for our operating leases. We do not record leases with terms of 12 months or less on our condensed consolidated balance sheets. As the implicit rate for our operating leases is generally not determinable, we use our incremental borrowing rate as our discount rate at the lease commencement date to determine the present value of lease payments. We determine the discount rate of our leases by considering various factors, such as our credit rating, interest rates of similar debt instruments of entities with comparable credit ratings, the lease term and the currency in which the lease is denominated. Our discount rate was determined using a portfolio approach. Our operating lease assets are included in “Operating lease right-of-use assets” and the current and non-current portions of our operating lease liabilities are included in “Accrued expenses and other liabilities” and “Operating lease liabilities,” respectively, on our condensed consolidated balance sheets. As of October 31, 2019 , we had no finance leases. Refer to Note 4 “Leases” for details.
Foreign Currency	Foreign Currency The functional currency of our foreign subsidiaries is their respective local currency, with the exception of our United Kingdom subsidiary, in which the functional currency is the U.S. dollar. Translation adjustments arising from the use of differing exchange rates from period to period are included in “Accumulated other comprehensive income (loss)” within the condensed consolidated statements of stockholders’ equity. Foreign currency transaction gains and losses are included in “Other income (expense), net.” All assets and liabilities denominated in a foreign currency are translated into U.S. dollars at the exchange rate on the balance sheet date. Expenses are translated at the average exchange rate during the period. Equity transactions are translated using historical exchange rates.
Revenue Recognition	Revenue Recognition We generate revenues primarily in the form of software license and related maintenance fees, cloud services and other service fees. Licenses for on-premises software are either term or perpetual 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. Cloud services are provided on a subscription basis and give our customers access to our cloud solutions, which include related customer support. Other services include training and professional services that are not integral to the functionality of the licenses or cloud services. Revenue from on-premises licenses is generally recognized upfront upon transfer of control of the software, which occurs at delivery, or when the license term commences, if later. We recognize revenue from maintenance contracts ratably over the service period. Cloud services revenue is recognized ratably over the cloud service term. Training and professional services are provided either on a time and material basis, in which revenues are recognized as services are delivered, or over a contractual term, in which revenues are recognized ratably. 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, use or excise taxes. Our contracts with customers often contain multiple performance obligations. For these contracts, we account for individual performance obligations separately if they are distinct. 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 in the period we deliver products or provide services, or when we have an unconditional right to payment. Most of our multi-year on-premises term license contracts are invoiced annually and we generally recognize the total amount of the license revenues upfront and record a corresponding receivable, if we have an unconditional right to receive payment. Payment terms and conditions vary by contract type, although our terms generally include a requirement of 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 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 for licenses that we delivered prior to the license term commencing.
New Accounting Pronouncements	Recently Adopted Accounting Standards Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements (or Other Significant Matters) Accounting Standards Update (“ASU”) No. 2018-15 (Subtopic 350-40), Intangibles - Goodwill and Other - Internal-Use Software: Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract The standard aligns the requirements for capitalizing implementation costs in a cloud computing arrangement with the requirements for capitalizing implementation costs incurred for an internal-use software license. We early adopted this new standard as of May 1, 2019. The adoption of this new standard did not have a material impact on our condensed consolidated financial statements. ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement The new standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. We adopted this new standard as of February 1, 2019. The adoption of this new standard did not have a material impact on our condensed consolidated financial statements. ASU No. 2016-02 (Topic 842), Leases The new standard supersedes the lease recognition requirements in Accounting Standards Codification (“ASC”) Topic 840, Leases. The standard requires an entity to recognize right-of-use assets and lease liabilities arising from a lease for operating leases, initially measured at the present value of the lease payments on the condensed consolidated balance sheets. The impact of such leases on the condensed consolidated statements of operations and cash flows will continue to be treated in a similar manner under current GAAP. The standard also requires additional qualitative and quantitative disclosures. In July 2018, ASU No. 2018-10, Codification Improvements to Topic 842, Leases, was issued which clarifies the codification or corrects unintended application of the guidance. We adopted this new standard as of February 1, 2019, using the cumulative-effect transition method recognized as of the date of initial application, as amended by ASU No. 2018-11. Under this method, we are not required to restate or disclose the effects of applying Topic 842 for comparative periods. As the result of our adoption, we recognized Operating lease right-of-use assets of $199.8 million and current and non-current Operating lease liabilities of $211.9 million on our condensed consolidated balance sheets at February 1, 2019. Additionally, we recorded a decrease to our opening accumulated deficit of approximately $7.2 million related to the derecognition of build-to-suit lease assets and liabilities. We have updated our accounting policies, systems, processes and internal controls, and have allocated internal and external resources to assist us during our implementation efforts. We applied the following practical expedients as permitted under Topic 842: (i) we elected to account for lease and non-lease components as a single lease component, and (ii) we elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward (1) our historical lease classification, (2) our assessment on whether a contract was or contains a lease, and (3) our initial direct costs for leases that existed prior to January 31, 2019. Recently Issued Accounting Pronouncements Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements (or Other Significant Matters) ASU No. 2016-13 (Topic 326), Financial Instruments - Credit Losses The amendments in this update require a financial asset (or a group of financial assets) measured at an amortized cost basis to be presented at the net amount expected to be collected. The new approach to estimating credit losses (referred to as the current expected credit losses model) applies to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans and held-to-maturity debt securities. First quarter of fiscal 2021, although early adoption is permitted. We are currently evaluating whether the adoption of this standard will have a material impact on our condensed consolidated financial statements.

Description of the Business a_3

Description of the Business and Significant Accounting Policies New Accounting Pronouncements (Tables)	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Recently Adopted Accounting Standards Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements (or Other Significant Matters) Accounting Standards Update (“ASU”) No. 2018-15 (Subtopic 350-40), Intangibles - Goodwill and Other - Internal-Use Software: Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract The standard aligns the requirements for capitalizing implementation costs in a cloud computing arrangement with the requirements for capitalizing implementation costs incurred for an internal-use software license. We early adopted this new standard as of May 1, 2019. The adoption of this new standard did not have a material impact on our condensed consolidated financial statements. ASU No. 2018-13 (Topic 820), Fair Value Measurement: Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement The new standard no longer requires disclosure of the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but public companies will be required to disclose the range and weighted-average used to develop significant unobservable inputs for Level 3 fair value measurements. We adopted this new standard as of February 1, 2019. The adoption of this new standard did not have a material impact on our condensed consolidated financial statements. ASU No. 2016-02 (Topic 842), Leases The new standard supersedes the lease recognition requirements in Accounting Standards Codification (“ASC”) Topic 840, Leases. The standard requires an entity to recognize right-of-use assets and lease liabilities arising from a lease for operating leases, initially measured at the present value of the lease payments on the condensed consolidated balance sheets. The impact of such leases on the condensed consolidated statements of operations and cash flows will continue to be treated in a similar manner under current GAAP. The standard also requires additional qualitative and quantitative disclosures. In July 2018, ASU No. 2018-10, Codification Improvements to Topic 842, Leases, was issued which clarifies the codification or corrects unintended application of the guidance. We adopted this new standard as of February 1, 2019, using the cumulative-effect transition method recognized as of the date of initial application, as amended by ASU No. 2018-11. Under this method, we are not required to restate or disclose the effects of applying Topic 842 for comparative periods. As the result of our adoption, we recognized Operating lease right-of-use assets of $199.8 million and current and non-current Operating lease liabilities of $211.9 million on our condensed consolidated balance sheets at February 1, 2019. Additionally, we recorded a decrease to our opening accumulated deficit of approximately $7.2 million related to the derecognition of build-to-suit lease assets and liabilities. We have updated our accounting policies, systems, processes and internal controls, and have allocated internal and external resources to assist us during our implementation efforts. We applied the following practical expedients as permitted under Topic 842: (i) we elected to account for lease and non-lease components as a single lease component, and (ii) we elected the package of practical expedients permitted under the transition guidance, which allowed us to carryforward (1) our historical lease classification, (2) our assessment on whether a contract was or contains a lease, and (3) our initial direct costs for leases that existed prior to January 31, 2019. Recently Issued Accounting Pronouncements Standard Description Effective Date Effect on the Condensed Consolidated Financial Statements (or Other Significant Matters) ASU No. 2016-13 (Topic 326), Financial Instruments - Credit Losses The amendments in this update require a financial asset (or a group of financial assets) measured at an amortized cost basis to be presented at the net amount expected to be collected. The new approach to estimating credit losses (referred to as the current expected credit losses model) applies to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans and held-to-maturity debt securities. First quarter of fiscal 2021, although early adoption is permitted. We are currently evaluating whether the adoption of this standard will have a material impact on our condensed consolidated financial statements.

Investments and Fair Value Me_2

Investments and Fair Value Measurements (Tables)	9 Months Ended
	Oct. 31, 2019
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: October 31, 2019 January 31, 2019 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Money market funds $ 136,491 $ — $ — $ 136,491 $ 46,311 $ — $ — $ 46,311 U.S. treasury securities — 846,169 — 846,169 — 980,940 — 980,940 Corporate bonds — 142,033 — 142,033 — — — — Commercial paper — 12,464 — 12,464 — — — — Other — — 4,500 4,500 — — 4,744 4,744 Reported as: Assets: Cash and cash equivalents $ 136,491 $ 46,311 Investments, current 948,352 881,220 Investments, non-current 56,814 104,463 Total $ 1,141,657 $ 1,031,994
Schedule of available-for-sale securities reconciliation	We invest in U.S. treasury securities, corporate bonds and commercial paper, which we have classified as available-for-sale investments. The following table presents our available-for-sale investments as of October 31, 2019 : (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Investments, current: U.S. treasury securities $ 844,801 $ 1,382 $ (14 ) $ 846,169 Corporate bonds 89,383 338 (2 ) 89,719 Commercial paper 12,447 17 — 12,464 Investments, non-current: Corporate bonds 51,855 459 — 52,314 Total available-for-sale investments $ 998,486 $ 2,196 $ (16 ) $ 1,000,666 The following table presents our available-for-sale investments as of January 31, 2019 : (In thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value Investments, current: U.S. treasury securities $ 881,206 $ 131 $ (117 ) $ 881,220 Investments, non-current: U.S. treasury securities 99,597 134 (11 ) 99,720 Total available-for-sale investments $ 980,803 $ 265 $ (128 ) $ 980,940
Schedule of unrealized loss on investments	The following table presents the fair values and unrealized losses of our available-for-sale investments, classified by length of time that the securities have been in a continuous unrealized loss position: Less than 12 Months 12 Months or Greater Total (In thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses October 31, 2019 U.S. treasury securities $ 35,116 $ (14 ) $ — $ — $ 35,116 $ (14 ) Corporate bonds 7,505 (2 ) — — 7,505 (2 ) January 31, 2019 U.S. treasury securities $ 582,761 $ (128 ) $ — $ — $ 582,761 $ (128 )
Investments classified by contractual maturity date	The contractual maturities of our investments are as follows: (In thousands) October 31, 2019 Due within one year $ 948,352 Due within one to two years 52,314 Total $ 1,000,666
Schedule of equity investments	Our equity investments are reported in “Investments, non-current” on our condensed consolidated balance sheets. The following table provides a summary of our equity investments: (In thousands) October 31, 2019 January 31, 2019 Equity investments without readily determinable fair values $ 8,244 $ 5,000 Equity investments under the equity method of accounting 1,875 1,125 Total $ 10,119 $ 6,125

Leases (Tables)

Leases (Tables)	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Lease, Cost	Our lease term and the discount rate related to our operating lease right-of-use assets and related lease liabilities are as follows: October 31, 2019 Weighted-average remaining lease term (in years) 8.18 Weighted-average discount rate 5.98 % Supplemental Disclosures Nine Months Ended (In thousands) October 31, 2019 Cash paid for operating lease liabilities $ 29,208 Operating lease liabilities arising from obtaining right-of-use assets 99,167
Maturity of Lease Liabilities	As of October 31, 2019 , the maturity of lease liabilities under our non-cancelable operating leases were as follows: Fiscal Period (In thousands) Future Payments (1) Remaining fiscal 2020 $ 12,469 Fiscal 2021 54,971 Fiscal 2022 54,599 Fiscal 2023 47,639 Fiscal 2024 36,659 Thereafter 175,752 Total lease payments 382,089 Less imputed interest (84,173 ) Total current and non-current operating lease liabilities (2) $ 297,916 _________________________ (1) Amounts based on Topic 842, Leases, which we adopted on February 1, 2019. (2) The current portion of our operating lease liabilities is included in “Accrued expenses and other liabilities” on our condensed consolidated balance sheets.
Schedule of Future Minimum Rental Payments for Operating Leases	As of January 31, 2019 , future minimum rental payments under our non-cancelable operating leases obligation were as follows: Fiscal Period (In thousands) Future Payments (1) Fiscal 2020 $ 30,976 Fiscal 2021 48,195 Fiscal 2022 48,126 Fiscal 2023 44,018 Fiscal 2024 40,636 Thereafter 253,856 Total future minimum lease payments (2) $ 465,807 _________________________ (1) Amounts based on Topic 840, Leases. (2) We entered into sublease agreements for portions of our office space and the future rental income of $2.3 million from these agreements have been included as an offset to our future minimum rental payments.

Property and Equipment (Tables)

Property and Equipment (Tables)	9 Months Ended
	Oct. 31, 2019
Property, Plant and Equipment [Abstract]
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) October 31, 2019 January 31, 2019 Computer equipment and software $ 90,433 $ 79,887 Furniture and fixtures 24,900 18,872 Leasehold and building improvements (1) 127,142 79,064 Building (2) — 82,250 Property and equipment, gross 242,475 260,073 Less: accumulated depreciation and amortization (116,849 ) (101,797 ) Property and equipment, net $ 125,626 $ 158,276 _________________________ (1) Includes costs related to assets not yet placed into service of $45.3 million and $11.3 million , as of October 31, 2019 and January 31, 2019 , respectively. (2) This relates to the capitalization of construction costs under ASC Topic 840, Leases, in connection with our financing lease obligation, where we were considered the owner of the asset, for accounting purposes only, during the period ended January 31, 2019 . The corresponding long-term liability for this obligation is included in our condensed consolidated balance sheets under “Other liabilities, non-current.” As part of our adoption of Topic 842, we derecognized the assets and liabilities related to the financing lease obligation at February 1, 2019. Refer to Note 4 “Leases” for details.
Long-lived Assets by Geographic Areas [Table Text Block]	The following table presents our property and equipment, net of depreciation and amortization, by geographic region: (In thousands) October 31, 2019 January 31, 2019 United States $ 110,709 $ 147,659 International 14,917 10,617 Total property and equipment, net $ 125,626 $ 158,276

Acquisitions, Goodwill and In_2

Acquisitions, Goodwill and Intangible Assets (Tables)	9 Months Ended
	Oct. 31, 2019
Goodwill [Line Items]
Schedule of pro forma information of business acquisitions	Unaudited Pro Forma Financial Information The following unaudited pro forma information presents the combined results of operations as if the acquisitions of SignalFx, Omnition, VictorOps and Phantom had been completed in the beginning of the applicable comparable prior annual reporting period. The unaudited pro forma results include adjustments primarily related to the following: (i) amortization associated with preliminary estimates for the acquired intangible assets; (ii) recognition of post-acquisition stock-based compensation; (iii) the effect of recording deferred revenue at fair value; (iv) elimination of historical interest expense related to debt extinguished in the acquisition of SignalFx; (v) the inclusion of acquisition costs as of the earliest period presented; and (vi) the associated tax impact of the acquisitions and these unaudited pro forma adjustments. The unaudited pro forma results do not reflect any cost saving synergies from operating efficiencies or the effect of the incremental costs incurred from integrating these companies. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined company would have been if the acquisitions had occurred at the beginning of the period presented, nor are they indicative of future results of operations: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 Revenues $ 631,348 $ 483,804 $ 1,584,999 $ 1,196,492 Net loss $ (83,162 ) $ (86,318 ) $ (413,940 ) $ (391,225 )
Schedule of finite-lived intangible assets	Intangible assets subject to amortization realized from acquisitions as of October 31, 2019 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life (months) Developed technology $ 248,900 $ (77,259 ) $ 171,641 70 Customer relationships 81,810 (8,403 ) 73,407 56 Other acquired intangible assets 7,270 (3,321 ) 3,949 35 Total intangible assets subject to amortization $ 337,980 $ (88,983 ) $ 248,997 Intangible assets subject to amortization realized from acquisitions as of January 31, 2019 are as follows: (In thousands, except useful life) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Useful Life (months) Developed technology $ 132,100 $ (57,596 ) $ 74,504 52 Customer relationships 20,910 (4,523 ) 16,387 52 Other acquired intangible assets 3,270 (2,539 ) 731 9 Total intangible assets subject to amortization $ 156,280 $ (64,658 ) $ 91,622
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 October 31, 2019 is as follows: Fiscal Period (In thousands) Expected Amortization Expense Remaining fiscal 2020 $ 13,969 Fiscal 2021 54,437 Fiscal 2022 44,357 Fiscal 2023 40,617 Fiscal 2024 37,015 Thereafter 58,602 Total amortization expense $ 248,997
Omnition [Member]
Goodwill [Line Items]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	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 (months) Developed technology $ 8,000 60 Total intangible assets acquired $ 8,000
VictorOps [Member]
Goodwill [Line Items]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	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 (months) Developed technology $ 11,700 84 Customer relationships 9,400 60 Total intangible assets acquired $ 21,100
Phantom Cyber Corporation
Goodwill [Line Items]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	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 (months) Developed technology $ 34,400 84 Customer relationships 9,700 60 Total intangible assets acquired $ 44,100

Convertible Senior Notes (Table

Convertible Senior Notes (Tables)	9 Months Ended
	Oct. 31, 2019
Debt Disclosure [Abstract]
Convertible Senior Notes	The net carrying amount of the liability and equity components for each of the Notes as of October 31, 2019 was as follows: (In thousands) 2023 Notes 2025 Notes Liability component: Principal amount $ 1,265,000 $ 862,500 Unamortized discount (213,656 ) (205,889 ) Unamortized issuance costs (8,339 ) (5,665 ) Net carrying amount $ 1,043,005 $ 650,946 Equity component, net of purchase discounts and issuance costs $ 264,129 $ 234,712
Schedule of Interest Expense	The following table sets forth the interest expense related to the Notes: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 2023 Notes: Coupon interest expense $ 1,581 $ 685 $ 4,743 $ 685 Amortization of debt discount (conversion option) 12,390 5,167 36,203 5,167 Amortization of debt issuance costs and purchase discounts 484 202 1,414 202 Total interest expense related to the 2023 Notes $ 14,455 $ 6,054 $ 42,360 $ 6,054 2025 Notes: Coupon interest expense $ 2,426 $ 1,051 $ 7,278 $ 1,051 Amortization of debt discount (conversion option) 7,308 3,039 21,276 3,039 Amortization of debt issuance costs and purchase discounts 201 84 585 84 Total interest expense related to the 2025 Notes $ 9,935 $ 4,174 $ 29,139 $ 4,174

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	9 Months Ended
	Oct. 31, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Stock Options, RSUs and PSUs Award Activity	The following table summarizes the stock option, restricted stock unit (“RSU”), restricted stock award (“RSA”) and performance unit (“PSU”) award activity under our 2012 Equity Incentive Plan during the nine months ended October 31, 2019 : Options Outstanding RSUs and PSUs Outstanding Shares Available for Grant Shares Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value (1) Shares (in years) (in thousands) Balances as of January 31, 2019 17,082,136 409,039 $ 10.69 3.36 $ 46,693 13,098,607 Additional shares authorized 7,458,364 Options granted (799,461 ) 799,461 10.96 Options exercised (88,310 ) 7.27 Options forfeited and expired 6,631 (6,631 ) 18.67 RSUs and PSUs granted (3,435,771 ) 3,435,771 RSUs and PSUs vested (3,806,428 ) RSAs issued (421,533 ) Shares withheld related to net share settlement of RSUs and PSUs 1,374,238 RSUs and PSUs forfeited and canceled 1,330,586 (1,330,586 ) Balances as of October 31, 2019 22,595,190 1,113,559 $ 11.11 6.76 $ 121,211 11,397,364 Vested and expected to vest 1,113,457 $ 11.11 6.76 $ 121,204 10,786,291 Exercisable as of October 31, 2019 328,034 $ 11.07 2.55 $ 35,721 _________________________ (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 October 31, 2019 .
Schedule of RSA Activity	The following table summarizes our RSA activity during the nine months ended October 31, 2019 : Shares Outstanding as of January 31, 2019 824,605 RSAs issued 641,382 RSAs vested (450,422 ) RSAs forfeited and canceled (229 ) Outstanding as of October 31, 2019 1,015,336

Revenue, Deferred Revenue and P

Revenue, Deferred Revenue and Performance Obligations Revenue from Contract with Customer (Tables)	9 Months Ended
	Oct. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents disaggregated revenues by major product or service type: Three Months Ended October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 Revenues License $ 373,684 $ 279,603 $ 855,825 $ 619,246 Maintenance, professional services and training 172,212 156,243 498,973 443,931 Cloud services 80,440 45,137 212,946 117,748 Total revenues $ 626,336 $ 480,983 $ 1,567,744 $ 1,180,925
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 October 31, Nine Months Ended October 31, (In thousands) 2019 2018 2019 2018 United States $ 489,911 $ 364,626 $ 1,154,477 $ 859,268 International 136,425 116,357 413,267 321,657 Total revenues $ 626,336 $ 480,983 $ 1,567,744 $ 1,180,925

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	9 Months Ended
	Oct. 31, 2019
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 October 31, Nine Months Ended October 31, (In thousands, except per share amounts) 2019 2018 2019 2018 Numerator: Net loss $ (57,639 ) $ (55,705 ) $ (313,940 ) $ (277,703 ) Denominator: Weighted-average common shares outstanding 153,086 147,269 151,226 145,063 Less: Weighted-average unvested common shares subject to repurchase or forfeiture (682 ) (878 ) (567 ) (48 ) Weighted-average shares used to compute net loss per share, basic and diluted 152,404 146,391 150,659 145,015 Net loss per share, basic and diluted $ (0.38 ) $ (0.38 ) $ (2.08 ) $ (1.91 )
Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive	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 October 31, (In thousands) 2019 2018 Shares subject to outstanding common stock options 1,114 445 Shares subject to outstanding RSUs, PSUs and RSAs 12,413 12,990 Employee stock purchase plan 360 398 Total 13,887 13,833

Segments (Details)

Segments (Details)	9 Months Ended
	Oct. 31, 2019segment
Accounting Policies [Abstract]
Number of operating segments	1

Description of the Business a_4

Description of the Business and Significant Accounting Policies Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands		Oct. 31, 2019	Feb. 01, 2019	Jan. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 278,261		$ 0
Current and non-current operating lease liabilities	[1],[2]	297,916
Adjustment to accumulated deficit		$ (1,538,743)		$ (1,232,044)
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets			$ 199,800
Current and non-current operating lease liabilities			211,900
Adjustment to accumulated deficit			$ 7,200
[1]	Amounts based on Topic 842, Leases, which we adopted on February 1, 2019.
[2]	The current portion of our operating lease liabilities is included in “Accrued expenses and other liabilities” on our condensed consolidated balance sheets.

Description of the Business a_5

Description of the Business and Significant Accounting Policies Revenue Recognition (Details)	9 Months Ended
	Oct. 31, 2019
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable payment terms	30 days
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable payment terms	60 days

Investments and Fair Value Me_3

Investments and Fair Value Measurements (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	$ 1,000,666
Estimate of Fair Value Measurement | Recurring basis
Fair Value Measurements
Money market funds	136,491	$ 46,311
Other	4,500	4,744
Assets:
Cash and cash equivalents	136,491	46,311
Investments, current	948,352	881,220
Investments, non-current	56,814	104,463
Total	1,141,657	1,031,994
Estimate of Fair Value Measurement | Recurring basis | Level 1
Fair Value Measurements
Money market funds	136,491	46,311
Other	0	0
Estimate of Fair Value Measurement | Recurring basis | Level 2
Fair Value Measurements
Money market funds	0	0
Other	0	0
Estimate of Fair Value Measurement | Recurring basis | Level 3
Fair Value Measurements
Money market funds	0	0
Other	4,500	4,744
US Treasury Securities
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper		980,940
US Treasury Securities | Estimate of Fair Value Measurement | Recurring basis
Fair Value Measurements
U.S. treasury securities, corporate bonds and commercial paper	846,169	980,940
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	846,169	980,940
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	142,033	0
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	142,033	0
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	12,464	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	12,464	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	Oct. 31, 2019	Jan. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 998,486
Unrealized Gains	2,196
Unrealized Losses	(16)
Fair Value	1,000,666
US Treasury Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 980,803
Unrealized Gains		265
Unrealized Losses		(128)
Fair Value		980,940
US Treasury Securities | Investments, Current
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	844,801	881,206
Unrealized Gains	1,382	131
Unrealized Losses	(14)	(117)
Fair Value	846,169	881,220
US Treasury Securities | Investments, Non-current
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		99,597
Unrealized Gains		134
Unrealized Losses		(11)
Fair Value		$ 99,720
Corporate Bonds | Investments, Current
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	89,383
Unrealized Gains	338
Unrealized Losses	(2)
Fair Value	89,719
Corporate Bonds | Investments, Non-current
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	51,855
Unrealized Gains	459
Unrealized Losses	0
Fair Value	52,314
Commercial Paper | Investments, Current
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	12,447
Unrealized Gains	17
Unrealized Losses	0
Fair Value	$ 12,464

Investments and Fair Value Me_5

Investments and Fair Value Measurements - Securities in Unrealized Loss Position (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
US Treasury Securities
Fair Value
Less than 12 Months	$ 35,116	$ 582,761
12 Months or Greater	0	0
Total	35,116	582,761
Unrealized Losses
Less than 12 Months	(14)	(128)
12 Months or Greater	0	0
Total	(14)	$ (128)
Corporate Bonds
Fair Value
Less than 12 Months	7,505
12 Months or Greater	0
Total	7,505
Unrealized Losses
Less than 12 Months	(2)
12 Months or Greater	0
Total	$ (2)

Investments and Fair Value Me_6

Investments and Fair Value Measurements - Contractual Maturities (Details) $ in Thousands	Oct. 31, 2019USD ($)
Investments, Debt and Equity Securities and Fair Value Disclosures [Abstract]
Due within one year	$ 948,352
Due within one to two years	52,314
Total	$ 1,000,666

Investments and Fair Value Me_7

Investments and Fair Value Measurements - Equity Investments (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Investments, Debt and Equity Securities and Fair Value Disclosures [Abstract]
Equity investments without readily determinable fair values	$ 8,244	$ 5,000
Equity investments under the equity method of accounting	1,875	1,125
Total	$ 10,119	$ 6,125

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Feb. 01, 2019	Jan. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 12,600		$ 35,000
Rent expense		$ 6,300		$ 18,500
Leases not yet commenced, future lease payments	190,900		190,900
Adjustment to accumulated deficit	$ (1,538,743)		$ (1,538,743)			$ (1,232,044)
Minimum
Lessee, Lease, Description [Line Items]
Term of office lease	3 years		3 years
Maximum
Lessee, Lease, Description [Line Items]
Term of office lease	11 years		11 years
Property and equipment
Lessee, Lease, Description [Line Items]
Lease accounted for as build-to-suit						76,200
Other Noncurrent Liabilities
Lessee, Lease, Description [Line Items]
Finance lease obligations						$ 83,400
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Adjustment to accumulated deficit					$ 7,200

Leases - Lease Term and Discoun

Leases - Lease Term and Discount Rate (Details)	Oct. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term (in years)	8 years 2 months 4 days
Weighted-average discount rate	5.98%

Leases - Maturity of Lease Liab

Leases - Maturity of Lease Liability, After Adoption of 842 (Details) $ in Thousands	Oct. 31, 2019USD ($)	[1]
Leases [Abstract]
Remaining fiscal 2020	$ 12,469
Fiscal 2021	54,971
Fiscal 2022	54,599
Fiscal 2023	47,639
Fiscal 2024	36,659
Thereafter	175,752
Total lease payments	382,089
Less imputed interest	(84,173)
Total current and non-current operating lease liabilities (2)	$ 297,916	[2]
[1]	Amounts based on Topic 842, Leases, which we adopted on February 1, 2019.
[2]	The current portion of our operating lease liabilities is included in “Accrued expenses and other liabilities” on our condensed consolidated balance sheets.

Leases - Maturity of Lease Li_2

Leases - Maturity of Lease Liability, Prior to 842 Adoption (Details) $ in Thousands	12 Months Ended
	Jan. 31, 2019USD ($)
Leases [Abstract]
Fiscal 2020	$ 30,976	[1]
Fiscal 2021	48,195	[1]
Fiscal 2022	48,126	[1]
Fiscal 2023	44,018	[1]
Fiscal 2024	40,636	[1]
Thereafter	253,856	[1]
Total future minimum lease payments	465,807	[1],[2]
Sublease agreements, future rental income	$ 2,300
[1]	Amounts based on Topic 840, Leases.
[2]	We entered into sublease agreements for portions of our office space and the future rental income of $2.3 million from these agreements have been included as an offset to our future minimum rental payments.

Leases - Supplemental Disclosur

Leases - Supplemental Disclosure (Details) $ in Thousands	9 Months Ended
	Oct. 31, 2019USD ($)
Leases [Abstract]
Cash paid for operating lease liabilities	$ 29,208
Operating lease liabilities arising from obtaining right-of-use assets	$ 99,167

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 242,475		$ 242,475		$ 260,073
Less: accumulated depreciation and amortization	(116,849)		(116,849)		(101,797)
Property and equipment, net	125,626		125,626		158,276
Depreciation and amortization expense on Property and Equipment, net	8,600	$ 6,700	21,500	$ 19,800
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	90,433		90,433		79,887
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,900		24,900		18,872
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	127,142		127,142		79,064
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	0		0		82,250
Leasehold improvements not in service
Property, Plant and Equipment [Line Items]
Property and equipment, gross	45,300		45,300		11,300
International [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	14,917		14,917		10,617
United States
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 110,709		$ 110,709		$ 147,659

Acquisitions, Goodwill and In_3

Acquisitions, Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	Oct. 01, 2019	Sep. 13, 2019	Jun. 22, 2018	Apr. 06, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Business Acquisition [Line Items]
Common stock, shares issued					155,900,867		155,900,867		149,167,298
Goodwill					$ 1,278,456		$ 1,278,456		$ 503,388
Amortization of intangible assets					10,100	$ 7,100	$ 24,300	$ 18,100
SignalFx [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired	100.00%
Purchase price	$ 961,400
Purchase price paid in cash	619,100
Fair value of replacement equity awards attributable to pre-acquisition service	$ 324,500
Common stock, shares issued	2,771,482
Business Combination, Consideration Transferred, Fair Value Of Replacement Equity Awards Attributable to Pre-acquisition Service	$ 17,800
Acquired fair value of finite-lived intangible assets	173,700
Net assets acquired	62,100
Goodwill	730,600
Acquisition-related costs					7,000
Replacement equity awards	104,700
Net deferred tax liabilities assumed	$ 5,000
VictorOps [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired			100.00%
Purchase price			$ 112,300
Purchase price paid in cash			108,800
Fair value of replacement equity awards attributable to pre-acquisition service			3,500
Acquired fair value of finite-lived intangible assets			21,100
Net assets acquired			1,700
Goodwill			89,500
Acquisition-related costs						2,700
Replacement equity awards			$ 7,600
Omnition [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired		100.00%
Purchase price		$ 52,500
Purchase price paid in cash		31,600
Fair value of replacement equity awards attributable to pre-acquisition service		$ 20,200
Common stock, shares issued		176,989
Business Combination, Consideration Transferred, Fair Value Of Replacement Equity Awards Attributable to Pre-acquisition Service		$ 700
Acquired fair value of finite-lived intangible assets		8,000
Goodwill		44,500
Acquisition-related costs					$ 600
Replacement equity awards		$ 36,600
Phantom Cyber Corporation
Business Acquisition [Line Items]
Percentage of voting interests acquired				100.00%
Purchase price				$ 303,800
Purchase price paid in cash				291,500
Fair value of replacement equity awards attributable to pre-acquisition service				12,300
Acquired fair value of finite-lived intangible assets				44,100
Net assets acquired				10,500
Goodwill				252,500
Acquisition-related costs						$ 3,300
Replacement equity awards				62,200
Net deferred tax liabilities assumed				$ 3,300

Acquisitions, Goodwill and In_4

Acquisitions, Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 01, 2019	Sep. 13, 2019	Jun. 22, 2018	Apr. 06, 2018	Oct. 31, 2019	Jan. 31, 2019
Developed technology
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Weighted Average Remaining Useful Life					70 months	52 months
Customer relationships
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Weighted Average Remaining Useful Life					56 months	52 months
Other acquired intangible assets
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Weighted Average Remaining Useful Life					35 months	9 months
VictorOps [Member]
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Percentage of voting interests acquired			100.00%
Acquired fair value of finite-lived intangible assets			$ 21,100
VictorOps [Member] | Developed technology
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets			$ 11,700
Weighted Average Remaining Useful Life			84 months
VictorOps [Member] | Customer relationships
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets			$ 9,400
Weighted Average Remaining Useful Life			60 months
SignalFx [Member]
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Percentage of voting interests acquired	100.00%
Acquired fair value of finite-lived intangible assets	$ 173,700
SignalFx [Member] | Developed technology
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets	$ 108,800
Weighted Average Remaining Useful Life	84 months
SignalFx [Member] | Customer relationships
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets	$ 60,900
Weighted Average Remaining Useful Life	60 months
SignalFx [Member] | Other acquired intangible assets
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets	$ 4,000
Weighted Average Remaining Useful Life	36 months
Omnition [Member]
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Percentage of voting interests acquired		100.00%
Acquired fair value of finite-lived intangible assets		$ 8,000
Omnition [Member] | Developed technology
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets		$ 8,000
Weighted Average Remaining Useful Life		60 months
Phantom Cyber Corporation
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Percentage of voting interests acquired				100.00%
Acquired fair value of finite-lived intangible assets				$ 44,100
Phantom Cyber Corporation | Developed technology
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets				$ 34,400
Weighted Average Remaining Useful Life				84 months
Phantom Cyber Corporation | Customer relationships
Finite-Lived and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]
Acquired fair value of finite-lived intangible assets				$ 9,700
Weighted Average Remaining Useful Life				60 months

Goodwill (Details)

Goodwill (Details) $ in Thousands	9 Months Ended
	Oct. 31, 2019USD ($)
Goodwill [Roll Forward]
Balance as of January 31, 2019	$ 503,388
Goodwill acquired	775,068
Balance as of October 31, 2019	$ 1,278,456

Intangible Assets Amortization

Intangible Assets Amortization (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	$ 337,980	$ 156,280
Accumulated Amortization	(88,983)	(64,658)
Total	248,997	91,622
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	248,900	132,100
Accumulated Amortization	(77,259)	(57,596)
Total	$ 171,641	$ 74,504
Weighted Average Remaining Useful Life	70 months	52 months
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	$ 81,810	$ 20,910
Accumulated Amortization	(8,403)	(4,523)
Total	$ 73,407	$ 16,387
Weighted Average Remaining Useful Life	56 months	52 months
Other acquired intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	$ 7,270	$ 3,270
Accumulated Amortization	(3,321)	(2,539)
Total	$ 3,949	$ 731
Weighted Average Remaining Useful Life	35 months	9 months

Intangible Assets Expected Futu

Intangible Assets Expected Future Amortization Expense (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Business Combinations [Abstract]
Remaining fiscal 2020	$ 13,969
Fiscal 2021	54,437
Fiscal 2022	44,357
Fiscal 2023	40,617
Fiscal 2024	37,015
Thereafter	58,602
Total	$ 248,997	$ 91,622

Acquisitions, Goodwill and In_5

Acquisitions, Goodwill and Intangible Assets Schedule of Pro Forma of Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenues	$ 626,336	$ 480,983	$ 1,567,744	$ 1,180,925
Net loss	(57,639)	(55,705)	(313,940)	(277,703)
Pro Forma [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenues	631,348	483,804	1,584,999	1,196,492
Net loss	$ (83,162)	$ (86,318)	$ (413,940)	$ (391,225)

Convertible Senior Notes - Narr

Convertible Senior Notes - Narrative (Details) $ / shares in Units, $ in Thousands	Sep. 21, 2018USD ($)$ / shares	Oct. 31, 2019USD ($)trading_day	Oct. 31, 2018USD ($)	Sep. 18, 2018$ / shares
Debt Instrument [Line Items]
Proceeds from the issuance of convertible senior notes, net of issuance costs	$ 2,110,000	$ 0	$ 2,106,225
Purchase of capped calls	$ 274,300	$ 0	$ 274,275
Minimum
Debt Instrument [Line Items]
Initial conversion price | $ / shares	$ 148.30
Maximum
Debt Instrument [Line Items]
Initial conversion price | $ / shares	$ 232.62
Convertible Senior Notes
Debt Instrument [Line Items]
Conversion ratio	6.7433
Initial conversion price | $ / shares	$ 148.30
Initial conversion price premium, percent				27.50%
Share Price | $ / shares				$ 116.31
Trading days threshold | trading_day		20
Consecutive trading days threshold | trading_day		30
Percentage of stock trigger price		130.00%
Convertible senior notes repurchase price percentage		100.00%
Convertible Senior Notes | 2023 Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,270,000	$ 1,043,005
Stated interest rate	0.50%
Option to purchase additional amount	$ 165,000
Equity component		264,129
Unamortized issuance costs		$ 8,339
Effective interest rate		5.65%
Convertible senior notes, fair value		$ 1,370,000
Convertible Senior Notes | 2023 Notes | Additional paid-in capital
Debt Instrument [Line Items]
Equity component		266,900
Unamortized issuance costs		2,800
Convertible Senior Notes | 2023 Notes | Liability
Debt Instrument [Line Items]
Unamortized issuance costs	10,400
Convertible Senior Notes | 2025 Notes
Debt Instrument [Line Items]
Long-term debt	$ 862,500	$ 650,946
Stated interest rate	1.125%
Option to purchase additional amount	$ 112,500
Consecutive trading days threshold		10
Equity component		$ 234,712
Measurement period, business days		5
Percentage of stock trigger price for measurement period		98.00%
Unamortized issuance costs		$ 5,665
Effective interest rate		6.22%
Convertible senior notes, fair value		$ 955,700
Convertible Senior Notes | 2025 Notes | Additional paid-in capital
Debt Instrument [Line Items]
Equity component		237,200
Unamortized issuance costs		$ 2,500
Convertible Senior Notes | 2025 Notes | Liability
Debt Instrument [Line Items]
Unamortized issuance costs	$ 6,500
Fiscal Quarter Commencing After the Fiscal Quarter Ending On January 31, 2019 | Convertible Senior Notes
Debt Instrument [Line Items]
Trading days threshold		20
Consecutive trading days threshold		30
Percentage of stock trigger price		130.00%

Convertible Senior Notes - Sche

Convertible Senior Notes - Schedule of Carrying Amount of the Liability and Equity (Details) - Convertible Senior Notes - USD ($) $ in Thousands	Oct. 31, 2019	Sep. 21, 2018
2023 Notes
Liability component:
Principal amount	$ 1,265,000
Unamortized discount	(213,656)
Unamortized issuance costs	(8,339)
Net carrying amount	1,043,005	$ 1,270,000
Equity component, net of purchase discounts and issuance costs	264,129
2025 Notes
Liability component:
Principal amount	862,500
Unamortized discount	(205,889)
Unamortized issuance costs	(5,665)
Net carrying amount	650,946	$ 862,500
Equity component, net of purchase discounts and issuance costs	$ 234,712

Convertible Senior Notes - Sc_2

Convertible Senior Notes - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Debt Instrument [Line Items]
Amortization of debt issuance costs and purchase discounts			$ (59,477)	$ (8,491)
Convertible Senior Notes | 2023 Notes
Debt Instrument [Line Items]
Coupon interest expense	$ 1,581	$ 685	4,743	685
Amortization of debt discount (conversion option)	12,390	5,167	36,203	5,167
Amortization of debt issuance costs and purchase discounts	484	202	1,414	202
Total interest expense	14,455	6,054	42,360	6,054
Convertible Senior Notes | 2025 Notes
Debt Instrument [Line Items]
Coupon interest expense	2,426	1,051	7,278	1,051
Amortization of debt discount (conversion option)	7,308	3,039	21,276	3,039
Amortization of debt issuance costs and purchase discounts	201	84	585	84
Total interest expense	$ 9,935	$ 4,174	$ 29,139	$ 4,174

Stock Compensation Plans (Detai

Stock Compensation Plans (Details)	9 Months Ended
	Oct. 31, 2019shares
Available for Grant
Balances at the beginning of the period (in shares)	17,082,136
Additional Shares Authorized (in shares)	7,458,364
Options granted (in shares)	(799,461)
Options forfeited and expired (in shares)	6,631
RSUs and PSUs granted (in shares)	(3,435,771)
Shares withheld related to net share settlement of RSUs (in shares)	1,374,238
RSUs and PSUs forfeited and canceled (in shares)	1,330,586
Balances at the end of the period (in shares)	22,595,190

Stock Compensation Plans (Det_2

Stock Compensation Plans (Details 2) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended	12 Months Ended
		Oct. 31, 2019	Oct. 31, 2019	Jan. 31, 2019
Shares
Options granted (in shares)			799,461
Options forfeited and expired (in shares)			(6,631)
Number of Shares
RSUs and PSUs granted (in shares)			3,435,771
Shares withheld related to net share settlement of RSUs (in shares)			1,374,238
RSUs and PSUs forfeited and canceled (in shares)			(1,330,586)
Options
Shares
Outstanding at the beginning of the period (in shares)			409,039
Options granted (in shares)			799,461
Options exercised (in shares)			(88,310)
Options forfeited and expired (in shares)			(6,631)
Outstanding at the end of the period (in shares)		1,113,559	1,113,559	409,039
Vested and expected to vest at the end of the period (in shares)		1,113,457	1,113,457
Exercisable at the end of the period (in shares)		328,034	328,034
Weighted-Average Exercise Price Per Share
Balances at the beginning of the period (in dollars per share)			$ 10.69
Options granted (in dollars per share)			10.96
Options exercised (in dollars per share)			7.27
Options forfeited (in dollars per share)			18.67
Balances at the end of the period (in dollars per share)		$ 11.11	11.11	$ 10.69
Vested and expected to vest at the end of the period (in dollars per share)		11.11	11.11
Exercisable at the end of the period (in dollars per share)		$ 11.07	$ 11.07
Weighted-Average Remaining Contractual Term
Balances at the end of the period			6 years 9 months 3 days	3 years 4 months 9 days
Vested and expected to vest at the end of the period			6 years 9 months 3 days
Vested and exercisable at the end of the period			2 years 6 months 18 days
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	[1]	$ 121,211	$ 121,211	$ 46,693
Vested and expected to vest at the end of the period (in dollars)	[1]	121,204	121,204
Vested and exercisable at the end of the period (in dollars)	[1]	35,721	35,721
Unrecognized compensation cost
Total unrecognized compensation cost related to stock options		$ 77,100	77,100
Weighted-average period over which unrecognized compensation cost is expected to be recognized		2 years 7 months 6 days
Additional disclosures
Total intrinsic value of options exercised (in dollars)			$ 10,500
RSUs and PSUs
Number of Shares
Balances at the beginning of the period (in shares)			13,098,607
RSUs and PSUs granted (in shares)			3,435,771
RSUs and PSUs vested (in shares)			(3,806,428)
RSUs and PSUs forfeited and canceled (in shares)			(1,330,586)
Balances at the end of the period (in shares)		11,397,364	11,397,364	13,098,607
RSUs vested and expected to vest at the end of the period (in shares)		10,786,291	10,786,291
Unrecognized compensation cost
Weighted-average period over which unrecognized compensation cost is expected to be recognized		2 years 8 months 12 days
Total unrecognized compensation cost		$ 866,900	$ 866,900
Additional disclosures
Weighted-average grant date fair value of awards granted (in dollars per share)			$ 124.25
PSUs
Unrecognized compensation cost
Weighted-average period over which unrecognized compensation cost is expected to be recognized			2 years 4 months 24 days
Total unrecognized compensation cost		$ 74,000	$ 74,000
Additional disclosures
Weighted-average grant date fair value of awards granted (in dollars per share)			$ 166.57
RSAs
Number of Shares
Balances at the beginning of the period (in shares)			824,605
RSUs and PSUs granted (in shares)			641,382
RSUs and PSUs vested (in shares)			(450,422)
RSUs and PSUs forfeited and canceled (in shares)			(229)
Balances at the end of the period (in shares)				824,605
Unrecognized compensation cost
Weighted-average period over which unrecognized compensation cost is expected to be recognized		2 years 4 months 24 days
Total unrecognized compensation cost		$ 86,500	$ 86,500
Additional disclosures
Weighted-average grant date fair value of awards granted (in dollars per share)			$ 115.53
Minimum | PSUs
Tax benefits
Award vesting rights			0.00%
Maximum | PSUs
Tax benefits
Award vesting rights			200.00%
Additional award vesting rights			50.00%
[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 October 31, 2019 .

Revenue Narrative (Details)

Revenue Narrative (Details) - Customer concentration risk - customer	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Accounts receivable
Concentration Risk [Line Items]
Number of customers accounting for 10 percent or more of the AR concentration risk	2		2		2
Revenues
Concentration Risk [Line Items]
Number of customers accounting for 10 percent or more of the revenue concentration risk	2	2	2	2
Customer One | Accounts receivable
Concentration Risk [Line Items]
Concentration risk, percentage			25.00%		29.00%
Customer One | Revenues
Concentration Risk [Line Items]
Concentration risk, percentage	27.00%	30.00%	29.00%	31.00%
Customer Two | Accounts receivable
Concentration Risk [Line Items]
Concentration risk, percentage			22.00%		10.00%
Customer Two | Revenues
Concentration Risk [Line Items]
Concentration risk, percentage	30.00%	23.00%	23.00%	19.00%

Revenue, Deferred Revenue and_2

Revenue, Deferred Revenue and Performance Obligations Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 626,336	$ 480,983	$ 1,567,744	$ 1,180,925
License
Disaggregation of Revenue [Line Items]
Total revenues	373,684	279,603	855,825	619,246
Maintenance, professional services and training
Disaggregation of Revenue [Line Items]
Total revenues	172,212	156,243	498,973	443,931
Cloud services
Disaggregation of Revenue [Line Items]
Total revenues	$ 80,440	$ 45,137	$ 212,946	$ 117,748

Revenue - Geographic Informatio

Revenue - Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Concentration Risk [Line Items]
Revenues	$ 626,336	$ 480,983	$ 1,567,744	$ 1,180,925
United States
Concentration Risk [Line Items]
Revenues	489,911	364,626	1,154,477	859,268
International
Concentration Risk [Line Items]
Revenues	$ 136,425	$ 116,357	$ 413,267	$ 321,657

Revenue, Deferred Revenue and_3

Revenue, Deferred Revenue and Performance Obligations Deferred Revenue (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Revenue from Contract with Customer [Abstract]
Recognition of deferred revenue from opening deferred balance	$ 534.7	$ 382

Revenue, Deferred Revenue and_4

Revenue, Deferred Revenue and Performance Obligations Remaining Performance Obligations (Details) $ in Millions	Oct. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 1,447
Revenue, Remaining Performance Obligation, Percentage	60.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months

Revenue, Deferred Revenue and_5

Revenue, Deferred Revenue and Performance Obligations Receivables (Details) - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019
Receivables [Abstract]
Total current and non-current accounts receivable	$ 942.2	$ 625.1

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ (1,855)	$ 1,814	$ 7,010	$ 637

Net Loss Per Share (Details)

Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Numerator
Net loss	$ (57,639)	$ (55,705)	$ (313,940)	$ (277,703)
Denominator
Weighted-average common shares outstanding (in shares)	153,086	147,269	151,226	145,063
Less: Weighted-average unvested common shares subject to repurchase or forfeiture (in shares)	(682)	(878)	(567)	(48)
Weighted-average shares used to compute net loss per share, basic and diluted (in shares)	152,404	146,391	150,659	145,015
Net loss per share
Net loss per share, basic and diluted (in dollars per share)	$ (0.38)	$ (0.38)	$ (2.08)	$ (1.91)

Net Loss Per Share - Potentiall

Net Loss Per Share - Potentially Dilutive Securities (Details) - shares shares in Thousands	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Potentially dilutive securities
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	13,887	13,833
Shares subject to outstanding common stock options
Potentially dilutive securities
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,114	445
Shares subject to outstanding RSUs, PSUs and RSAs
Potentially dilutive securities
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	12,413	12,990
Employee stock purchase plan
Potentially dilutive securities
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	360	398

Net Loss Per Share Net Loss Per

Net Loss Per Share Net Loss Per Share Conversion Shares (Details) - Convertible Senior Notes - $ / shares shares in Millions	9 Months Ended
	Oct. 31, 2019	Sep. 21, 2018
Potentially dilutive securities
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	14.3
Initial conversion price		$ 148.30

Subsequent Event (Details)

Subsequent Event (Details) $ in Millions	Nov. 01, 2019USD ($)
Streamlio [Member] | Subsequent Event
Subsequent Event [Line Items]
Consideration transferred	$ 24