Cloudera (CLDR) 10-Q 6 Dec 19 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Oct. 31, 2019	Nov. 27, 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	001-38069
Entity Registrant Name	CLOUDERA, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-2922329
Entity Address, Address Line One	395 Page Mill Road
Entity Address, City or Town	Palo Alto
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94306
City Area Code	650
Local Phone Number	362-0488
Title of 12(b) Security	Common Stock, $0.00005 par value
Trading Symbol	CLDR
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		287,151,499
Entity Central Index Key	0001535379
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 113,203	$ 158,672
Marketable securities, current	292,812	322,005
Accounts receivable, net	162,454	242,980
Contract assets	5,522	4,824
Deferred costs	42,987	32,100
Prepaid expenses and other current assets	28,968	38,281
Total current assets	645,946	798,862
Property and equipment, net	24,524	27,619
Marketable securities, non-current	92,867	56,541
Intangible assets, net	625,137	679,326
Goodwill	590,361	586,456
Deferred costs, non-current	29,648	36,913
Restricted cash	3,352	3,367
Operating lease right-of-use assets	209,920
Other assets	11,160	7,559
TOTAL ASSETS	2,232,915	2,196,643
CURRENT LIABILITIES:
Accounts payable	12,204	8,185
Accrued compensation	58,552	53,590
Other accrued liabilities	25,581	24,548
Operating lease liabilities, current	28,915
Total current liabilities	497,426	494,465
Operating lease liabilities, non-current	197,776
Other liabilities	7,192	22,209
TOTAL LIABILITIES	784,054	634,574
STOCKHOLDERS’ EQUITY:
Preferred stock, $0.00005 par value; 20,000,000 shares authorized, no shares issued and outstanding as of October 31, 2019 and January 31, 2019	0	0
Common stock $0.00005 par value; 1,200,000,000 shares authorized as of October 31, 2019 and January 31, 2019; 287,117,539 and 268,818,627 shares issued and outstanding as of October 31, 2019 and January 31, 2019, respectively	14	13
Additional paid-in capital	2,869,406	2,711,340
Accumulated other comprehensive income (loss)	978	(42)
Accumulated deficit	(1,421,537)	(1,149,242)
TOTAL STOCKHOLDERS’ EQUITY	1,448,861	1,562,069
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	2,232,915	2,196,643
Other Contract Liabilities
CURRENT LIABILITIES:
Other contract liabilities / Deferred revenue, current	7,732	17,177
Deferred revenue / Other contract liabilities, non-current	931	1,296
Deferred Revenue
CURRENT LIABILITIES:
Other contract liabilities / Deferred revenue, current	364,442	390,965
Deferred revenue / Other contract liabilities, non-current	$ 80,729	$ 116,604

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Oct. 31, 2019	Jan. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock par value (in dollars per share)	$ 0.05000	$ 0.05000
Preferred stock authorized (in shares)	20,000,000,000	20,000,000,000
Preferred stock issued (in shares)	0	0
Preferred stock outstanding (in shares)	0	0
Common stock par value (in dollars per share)	$ 0.05000	$ 0.05000
Common stock authorized (in shares)	1,200,000,000,000	1,200,000,000,000
Common stock issued (in shares)	287,117,539,000	268,818,627,000
Common stock outstanding (in shares)	287,117,539,000	268,818,627,000

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	[1]
Revenue:
Total revenue		$ 198,292	$ 118,988	[1]	$ 582,471	$ 335,426
Operating expenses:
Total cost of revenue	[2],[3]	57,628	29,976	[1]	175,991	95,459
Gross profit	[2],[3]	140,664	89,012	[1]	406,480	239,967
Operating expenses:
Research and development	[2],[3]	66,657	37,563	[1]	196,572	121,027
Sales and marketing	[2],[3]	117,783	55,055	[1]	349,657	170,246
General and administrative	[2],[3]	38,691	22,067	[1]	135,568	55,493
Total operating expenses	[2],[3]	223,131	114,685	[1]	681,797	346,766
Loss from operations		(82,467)	(25,673)	[1]	(275,317)	(106,799)
Interest income, net		2,756	2,440	[1]	9,203	6,420
Other income (expense), net		(46)	(1,126)	[1]	291	(3,154)
Loss before provision for income taxes		(79,757)	(24,359)	[1]	(265,823)	(103,533)
Provision for income taxes		(2,365)	(1,498)	[1]	(6,472)	(3,595)
Net loss		$ (82,122)	$ (25,857)	[4],[5]	$ (272,295)	$ (107,128)	[4],[6]
Net loss per share, basic and diluted (in dollars per share)		$ (0.29)	$ (0.17)	[1]	$ (0.98)	$ (0.72)
Weighted-average shares used in computing net loss per share, basic and diluted (in shares)		283,267	152,245	[1]	277,260	149,507
Subscription
Revenue:
Total revenue		$ 166,932	$ 100,757	[1]	$ 485,872	$ 283,318
Operating expenses:
Total cost of revenue	[2],[3]	30,224	13,996	[1]	88,636	44,764
Services
Revenue:
Total revenue		31,360	18,231	[1]	96,599	52,108
Operating expenses:
Total cost of revenue	[2],[3]	$ 27,404	$ 15,980	[1]	$ 87,355	$ 50,695
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	Amounts include amortization of acquired intangible assets as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue – subscription $ 2,761 $ 622 $ 8,358 $ 1,866 Sales and marketing 17,264 35 51,764 105
[3]	Amounts include stock‑based compensation expense as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue – subscription $ 4,306 $ 2,016 $ 12,314 $ 7,060 Cost of revenue – services 4,620 2,290 13,076 7,540 Research and development 19,697 7,805 55,991 26,002 Sales and marketing 17,400 5,504 46,199 14,281 General and administrative 8,191 4,275 37,238 12,848
[4]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[5]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[6]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

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
Amortization expense of acquired intangible assets	$ 20,000	$ 700	$ 60,100	$ 2,000
Research and development
Stock-based compensation expense	19,697	7,805	55,991	26,002
Sales and marketing
Stock-based compensation expense	17,400	5,504	46,199	14,281
Amortization expense of acquired intangible assets	17,264	35	51,764	105
General and administrative
Stock-based compensation expense	8,191	4,275	37,238	12,848
Subscription
Stock-based compensation expense	4,306	2,016	12,314	7,060
Amortization expense of acquired intangible assets	2,761	622	8,358	1,866
Services
Stock-based compensation expense	$ 4,620	$ 2,290	$ 13,076	$ 7,540

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	[2]	Oct. 31, 2019	Oct. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (82,122)	$ (25,857)	[1]	$ (272,295)	$ (107,128)	[1],[3],[4]
Other comprehensive income (loss), net of tax:
Foreign currency translation gain (loss)	473	(100)		(157)	(449)	[2]
Unrealized gain on investments	375	48		1,177	208	[2]
Total other comprehensive income (loss), net of tax	848	(52)		1,020	(241)	[2]
Comprehensive loss	$ (81,274)	$ (25,909)		$ (271,275)	$ (107,369)	[2]
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[3]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[4]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	[1]
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (272,295)	$ (107,128)	[2],[3]
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	103,020	7,759
Stock-based compensation	164,818	67,731
Accretion and amortization of marketable securities	(2,362)	(661)
Amortization of deferred costs	33,579	21,794
Loss (gain) on disposal of fixed assets	459	(22)
Changes in assets and liabilities:
Accounts receivable	78,952	38,161
Contract assets	(698)	2,821
Prepaid expenses and other assets	(3,056)	8,348
Deferred costs	(37,200)	(21,419)
Accounts payable	4,193	561
Accrued compensation	(2,323)	(7,034)
Accrued expenses and other liabilities	(22,994)	4,210
Net cash used in operating activities	(27,410)	(5,974)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of marketable securities and other investments	(392,497)	(368,914)
Sales of marketable securities and other investments	56,741	36,009
Maturities of marketable securities and other investments	331,630	346,203
Cash used in business combinations, net of cash acquired	(4,500)	0
Capital expenditures	(6,488)	(9,291)
Net cash provided by (used in) investing activities	(15,114)	4,007
CASH FLOWS FROM FINANCING ACTIVITIES
Taxes paid related to net share settlement of restricted stock units	(21,085)	(8,482)
Proceeds from employee stock plans	19,633	18,760
Net cash (used in) provided by financing activities	(1,452)	10,278
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,508)	(1,626)
Net (decrease) increase in cash, cash equivalents and restricted cash	(45,484)	6,685
Cash, cash equivalents and restricted cash — Beginning of period	162,039	61,299
Cash, cash equivalents and restricted cash — End of period	116,555	67,984
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for income taxes	5,607	3,069
Cash paid for operating lease liabilities	27,898
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Purchases of property and equipment in other accrued liabilities	138	202
Right-of-use assets obtained in exchange for new operating lease liabilities	3,741
Other Contract Liabilities
Changes in assets and liabilities:
Other contract liabilities / Deferred revenue	(9,810)	(108)
Deferred Revenue
Changes in assets and liabilities:
Other contract liabilities / Deferred revenue	$ (61,693)	$ (20,987)
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[3]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total		Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at beginning of period (in shares) at Jan. 31, 2018				145,327,001
Stockholders' equity, beginning of period at Jan. 31, 2018		$ 428,174		$ 7	$ 1,385,592	$ (832)	$ (956,593)
Shares issued under employee stock plans (in shares)				2,269,841
Shares issued under employee stock plans		9,312			9,312
Vested restricted stock units converted into shares (in shares)				5,862,431
Vested restricted stock units converted into shares		1		$ 1
Shares issued under employee stock purchase plan and other (in shares)				472,513
Shares issued under employee stock purchase plan and other		6,217			6,217
Stock-based compensation expense		67,731			67,731
Shares withheld related to net settlement of restricted stock units (in shares)				(488,200)
Shares withheld related to net settlement of restricted stock units		(8,482)			(8,482)
Unrealized gain on investments		208	[1]			208
Foreign currency translation adjustment		(449)	[1]			(449)
Net loss	[4]	(107,128)	[2],[3]				(107,128)
Balance at end of period (in shares) at Oct. 31, 2018				153,443,586
Stockholders' equity, end of period at Oct. 31, 2018		395,584		$ 8	1,460,370	(1,073)	(1,063,721)
Balance at beginning of period (in shares) at Jul. 31, 2018				150,997,502
Stockholders' equity, beginning of period at Jul. 31, 2018		399,616		$ 8	1,438,493	(1,021)	(1,037,864)
Shares issued under employee stock plans (in shares)				802,834
Shares issued under employee stock plans		4,081			4,081
Vested restricted stock units converted into shares (in shares)				1,863,681
Vested restricted stock units converted into shares		0
Stock-based compensation expense		21,890			21,890
Shares withheld related to net settlement of restricted stock units (in shares)				(220,431)
Shares withheld related to net settlement of restricted stock units		(4,094)			(4,094)
Unrealized gain on investments		48	[1]			48
Foreign currency translation adjustment		(100)	[1]			(100)
Net loss	[4]	(25,857)	[1]				(25,857)
Balance at end of period (in shares) at Oct. 31, 2018				153,443,586
Stockholders' equity, end of period at Oct. 31, 2018		395,584		$ 8	1,460,370	(1,073)	(1,063,721)
Balance at beginning of period (in shares) at Jan. 31, 2019				268,818,627
Stockholders' equity, beginning of period at Jan. 31, 2019		1,562,069		$ 13	2,711,340	(42)	(1,149,242)
Shares issued under employee stock plans (in shares)				3,776,455
Shares issued under employee stock plans		10,744		$ 1	10,743
Vested restricted stock units converted into shares (in shares)				16,558,127
Vested restricted stock units converted into shares		0
Shares issued under employee stock purchase plan and other (in shares)				734,637
Shares issued under employee stock purchase plan and other		3,590			3,590
Stock-based compensation expense		164,818			164,818
Shares withheld related to net settlement of restricted stock units (in shares)				(2,770,307)
Shares withheld related to net settlement of restricted stock units		(21,085)			(21,085)
Unrealized gain on investments		1,177				1,177
Foreign currency translation adjustment		(157)				(157)
Net loss		(272,295)					(272,295)
Balance at end of period (in shares) at Oct. 31, 2019				287,117,539
Stockholders' equity, end of period at Oct. 31, 2019		1,448,861		$ 14	2,869,406	978	(1,421,537)
Balance at beginning of period (in shares) at Jul. 31, 2019				279,594,721
Stockholders' equity, beginning of period at Jul. 31, 2019		1,475,496		$ 14	2,814,767	130	(1,339,415)
Shares issued under employee stock plans (in shares)				1,845,237
Shares issued under employee stock plans		5,856			5,856
Vested restricted stock units converted into shares (in shares)				6,377,738
Vested restricted stock units converted into shares		0
Stock-based compensation expense		54,214			54,214
Shares withheld related to net settlement of restricted stock units (in shares)				(700,157)
Shares withheld related to net settlement of restricted stock units		(5,431)			(5,431)
Unrealized gain on investments		375				375
Foreign currency translation adjustment		473				473
Net loss		(82,122)					(82,122)
Balance at end of period (in shares) at Oct. 31, 2019				287,117,539
Stockholders' equity, end of period at Oct. 31, 2019		$ 1,448,861		$ 14	$ 2,869,406	$ 978	$ (1,421,537)
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[3]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[4]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Organization and Description of

Organization and Description of Business	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business Cloudera, Inc. was incorporated in the state of Delaware on June 27, 2008 and is headquartered in Palo Alto, California. We sell subscriptions and services for an integrated suite of data analytics and management products from the Edge to artificial intelligence. Our offerings are based predominantly on open source software, utilizing data stored natively in public cloud object stores as well as in various open source data stores. Unless the context requires otherwise, the words “we,” “us,” “our,” the “Company” and “Cloudera” refer to Cloudera, Inc. and its subsidiaries taken as a whole. In January 2019, we completed our merger with Hortonworks, Inc. (Hortonworks), a publicly-held company headquartered in Santa Clara, California, and a provider of enterprise-grade, global data management platforms, services and solutions. We have included the financial results of Hortonworks in our condensed consolidated financial statements from the date of acquisition. During the year ended January 31, 2019, we adopted Accounting Standards Update (ASU) No.2014-09, Revenue from Contracts with Customers (Topic 606) . The condensed consolidated financial data for the three and nine months ended October 31, 2019 and 2018 and as of October 31, 2019 and January 31, 2019 reflects the impact of the full retrospective adoption of this standard, including previously reported amounts, which are labeled “as adjusted.” See Note 2 for additional details. As of October 31, 2019 and January 31, 2019 , we had an accumulated deficit of $1.4 billion and $1.1 billion

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles (GAAP) in the United States and the applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. The condensed consolidated financial statements include the results of Cloudera, Inc. and its wholly owned subsidiaries, which are located in various countries, including the United States, Australia, China, India, Germany, Ireland, The Netherlands, Singapore, Hungary and the United Kingdom. All intercompany balances and transactions have been eliminated upon consolidation. The consolidated balance sheet as of January 31, 2019 has been derived from the audited consolidated financial statements at that date but does not include all of the information and notes required by GAAP for complete financial statements. 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 information contained herein reflects all adjustments necessary for a fair presentation of our results of operations, financial position and cash flows. All such adjustments are of a normal, recurring nature. The results of operations for the three and nine months ended October 31, 2019 are not necessarily indicative of results to be expected for the full year ending January 31, 2020 or for any other interim period or for any other future year. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements in our Annual Report on Form 10-K for the year ended January 31, 2019 , filed with the SEC on March 29, 2019. Fiscal Year Our fiscal year ends on January 31. References to fiscal 2020 , for example, refer to the fiscal year ending January 31, 2020 . Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant items subject to such estimates include, but are not limited to, the useful lives of property and equipment and intangible assets, allowance for doubtful accounts, stock‑based compensation expense, bonus attainment, self‑insurance costs incurred, the fair value and useful lives of tangible and intangible assets acquired and liabilities assumed resulting from business combinations, the evaluation for impairment of intangible assets and goodwill, the fair value of our common stock prior to our IPO, estimated period of benefit for deferred contract costs, estimates related to our revenue recognition, such as the assessment of elements in a multi‑element arrangement and the fair value assigned to each element, contingencies, and the incremental borrowing rate used in discounting of our lease liabilities. These estimates and assumptions are based on management’s best estimates and judgment. Management regularly evaluates its estimates and assumptions using historical experience and other factors; however, actual results could differ significantly from these estimates. Segments We operate as two operating segments – subscription and services. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, who is our Interim Chief Executive Officer, in deciding how to allocate resources and assess performance. In January 2019, we completed our merger with Hortonworks. The combined company operates under the Cloudera name. We have integrated Hortonworks into our ongoing business operations and our chief operating decision maker evaluates our financial information and resources and assesses the performance of these resources on a consolidated basis. Our results of operations for the three and nine months ended October 31, 2019 reflect the results of operations of the combined entity. Cash, Cash Equivalents and Restricted Cash Cash equivalents consist of short‑term, highly liquid investments with original maturities of three months or less from the date of purchase. Restricted cash represents cash on deposit with financial institutions in support of letters of credit outstanding in favor of certain landlords for office space. Cash as reported on the condensed consolidated statements of cash flows includes the aggregate amounts of cash and cash equivalents and the restricted cash as shown on the condensed consolidated balance sheets. Cash as reported on the condensed consolidated statements of cash flows consists of the following (in thousands): As of October 31, 2019 2018 Cash and cash equivalents $ 113,203 $ 64,632 Restricted cash 3,352 3,352 Cash, cash equivalents and restricted cash $ 116,555 $ 67,984 Concentration of Credit Risk and Significant Customers Financial instruments that subject us to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities, restricted cash and accounts receivable. Our cash is deposited with high credit quality financial institutions. At times, such deposits may be in excess of the Federal Depository Insurance Corporation insured limits. We have not experienced any losses on these deposits. Our trade receivables are recorded at the invoice amount, net of an allowance for doubtful accounts, which is not material. The allowance for doubtful accounts reflects our best estimate of probable losses inherent in the receivable portfolio determined on the basis of the age of the receivable balance, historical experience, credit quality of the customer and current economic conditions. Receivables are written-off and charged against the recorded allowance when we have exhausted collection efforts without success. As of October 31, 2019 and January 31, 2019 , no single customer represented more than 10% of accounts receivable. For each of the three and nine months ended October 31, 2019 and 2018 , no single customer accounted for 10% or more of revenue. Recently Adopted Accounting Standards In June 2018, the Financial Accounting Standards Board (FASB) issued ASU 2018-07, Compensation-Stock Compensation Improvements to Nonemployee Share-Based Payment Accounting (Topic 718), which substantially aligns accounting for share-based payments to employees and non-employees. Under the standard, equity-classified share-based payment awards issued to nonemployees will be measured on the grant date, instead of the current requirement to remeasure the awards through the performance completion date. We adopted ASU 2018-07 as of February 1, 2019 and the standard did not have a material impact on our condensed consolidated financial statements for the three and nine months ended October 31, 2019 . In February 2018, the FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , which provides entities the option to reclassify tax effects stranded in other comprehensive income as a result of the 2017 Tax Cuts and Jobs Act (the Tax Act) to retained earnings. We adopted ASU 2018-02 as of February 1, 2019. We do not have tax effects stranded or otherwise in other comprehensive income, as such the standard did not have an impact on our condensed consolidated financial statements for the three and nine months ended October 31, 2019 . In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , as amended, which requires lessees to recognize lease liabilities and corresponding right-of-use (ROU) assets on the balance sheet and to provide enhanced disclosures surrounding the amount, timing and uncertainty of cash flows arising from leasing arrangements. We adopted the new standard on February 1, 2019 using the modified retrospective transition approach by applying the standard to all leases existing at the date of initial application and not restating comparative periods. Under this transition method, the application date of the new standard begins in the reporting period in which we have adopted the standard. We have elected the package of practical expedients permitted under the transition guidance, which allowed us not to reassess (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases and (3) the accounting for any initial direct costs for any expired or existing leases. We have also elected the short-term lease exception and will not recognize ROU assets or lease liabilities for qualifying leases (leases with a term of less than 12 months from lease commencement). See Note 8 for further information on the implementation of the standard. In May 2014, the FASB issued ASU No. 2014‑09, Revenue from Contracts with Customers (Topic 606) , which amended the existing FASB Accounting Standards Codification. Topic 606 establishes a principle for recognizing revenue upon the transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services and also provides guidance on the recognition of costs related to obtaining and fulfilling customer contracts. Topic 606 also includes Subtopic 340-40, Other Assets and Deferred Costs ; Contracts with Customers , which requires the deferral of incremental costs of obtaining a contract with a customer. Collectively, we refer to Topic 606 and Subtopic 340-40 as the “new revenue standard.” We adopted the new revenue standard utilizing the full retrospective method effective January 31, 2019. The tables below summarize the impacts of the full retrospective adoption of the new revenue standard. Our financial reporting under the new revenue standard is included in the columns labeled “As Adjusted” in the tables below. Select line items from the condensed consolidated statement of operations for the three and nine months ended October 31, 2018 reflecting the adoption of the new revenue standard are as follows (in thousands, except per share data): Three Months Ended October 31, 2018 Nine Months Ended October 31, 2018 As Previously Reported Adjustments As Adjusted As Previously Reported Adjustments As Adjusted Revenue: Subscription $ 99,698 $ 1,059 $ 100,757 $ 278,720 $ 4,598 $ 283,318 Services 18,485 (254 ) 18,231 52,508 (400 ) 52,108 Operating expenses: Sales and marketing 54,927 128 55,055 169,870 376 170,246 Net loss (26,534 ) 677 (25,857 ) (110,950 ) 3,822 (107,128 ) Net loss per share of common stock, basic and diluted $ (0.17 ) $ — $ (0.17 ) $ (0.74 ) $ 0.02 $ (0.72 ) Select line items from the condensed consolidated statements of cash flows for the nine months ended October 31, 2018 reflecting the adoption of the new revenue standard are as follows (in thousands): Nine months ended October 31, 2018 As Previously Reported Adjustments As Adjusted CASH FLOWS FROM OPERATING ACTIVITIES Net loss $ (110,950 ) $ 3,822 $ (107,128 ) Adjustments to reconcile net loss to net cash provided by operating activities: Amortization of deferred costs — 21,794 21,794 Changes in assets and liabilities: Accounts receivable, net 38,310 (149 ) 38,161 Contract assets — 2,821 2,821 Deferred costs — (21,419 ) (21,419 ) Accrued expenses and other liabilities 4,102 108 4,210 Other contract liabilities — (108 ) (108 ) Deferred revenue (14,118 ) (6,869 ) (20,987 ) Net cash used in operating activities (5,974 ) — (5,974 ) See Note 3 and Note 8 to our condensed consolidated financial statements for additional information on the new revenue standard and the adoption of Topic 842. Recently Issued Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires an entity to utilize a new impairment model known as the current expected credit loss model in place of the currently used incurred loss method. Under this update, on initial recognition and at each reporting period, an entity will be required to recognize an allowance that reflects the entity’s current estimate of credit losses expected to be incurred over the life of the financial instrument. For trade receivables, loans, and other financial instruments, an entity will be required to use a forward-looking expected loss model to recognize credit losses that are probable. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. In April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments , to eliminate inconsistencies and provide clarifications to the transition requirements of ASU No. 2016-13. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019, and requires a cumulative effect adjustment to the balance sheet as of the beginning of the first reporting period in which the guidance is effective. We plan to adopt this standard on February 1, 2020. We are currently in the process of evaluating the impact ASU 2016-13 will have on our consolidated financial statements. The effect on our condensed consolidated financial statements will largely depend on the composition and credit quality of our investment portfolio and trade receivables as well as the economic conditions at the time of adoption. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350) : Simplifying the Test for Goodwill Impairment , which eliminates step two from the goodwill impairment test. Under this standard, an entity should recognize an impairment charge for the amount by which the carrying amount of a reporting unit exceeds its fair value up to the amount of goodwill allocated to that reporting unit. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019. We are currently in the process of evaluating the impact ASU 2017-04 will have on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which amends ASC 820, Fair Value Measurement . ASU 2018-13 modifies the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019. We do not anticipate that ASU 2018-13 will have a material impact on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software : Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force), which aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019, with early adoption permitted. We do not anticipate that ASU 2018-15 will have a material impact on our consolidated financial statements. Changes in Accounting Policies Leases As a result of the adoption of Topic 842, we have also made changes to our accounting policies with respect to leases. At the inception of a contract, we determine whether the contract is or contains a lease. All leases with a term greater than one year are recognized on the balance sheet as ROU assets and lease liabilities. We have elected the short-term leases practical expedient which allows any leases with a term of 12 months or less to be considered short-term and thus will not have a lease liability or ROU asset recognized on the balance sheet. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The incremental borrowing rate is the rate incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease, which we do not include in our minimum lease terms unless the options are reasonably certain to be exercised. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components which we have elected to account for as a single lease component. On the lease commencement date, we establish assets and liabilities for the present value of estimated future costs to retire long-lived assets at the termination or expiration of a lease. Such assets are depreciated over the lease term to operating expense. Additionally, we have entered into subleases for unoccupied leased office space. Any impairments to the ROU asset, leasehold improvements or other assets as a result of a sublease are recognized as an operating expense in the period the sublease is executed. Any sublease payments received in excess of the straight-line rent payments for the sublease are recorded as an offset to operating expenses and recognized over the sublease life.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Oct. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table reflects our contract liabilities balances (in thousands): October 31, January 31, Deferred revenue, current $ 364,442 $ 390,965 Other contract liabilities, current 7,732 17,177 Deferred revenue, non-current 80,729 116,604 Other contract liabilities, non-current 931 1,296 Total contract liabilities $ 453,834 $ 526,042 Significant changes in the contract assets and the contract liabilities balances during the periods are as follows (in thousands): Contract Assets Contract Liabilities January 31, 2019 $ 4,824 $ 526,042 Amount transferred to receivables from contract assets (4,041 ) — Additions to contract assets 4,572 — Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period — (143,778 ) Increases due to invoicing prior to satisfaction of performance obligations — 104,075 April 30, 2019 5,355 486,339 Amount transferred to receivables from contract assets (4,091 ) — Additions to contract assets 4,305 — Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period — (144,776 ) Increases due to invoicing prior to satisfaction of performance obligations — 122,357 July 31, 2019 5,569 463,920 Amount transferred to receivables from contract assets (3,232 ) — Additions to contract assets 3,185 — Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period — (147,270 ) Increases due to invoicing prior to satisfaction of performance obligations — 137,184 October 31, 2019 $ 5,522 $ 453,834 Remaining Performance Obligations The transaction price allocated to remaining performance obligations represents contracted revenue that has been billed but not recognized, and unbilled non-cancelable amounts that will be recognized as revenue in future periods. Transaction price allocated to the remaining performance obligation is influenced by several factors, including seasonality, the timing of renewals and average contract terms. During the three and nine months ended October 31, 2019 , net revenue recognized from our remaining performance obligations satisfied in previous periods was not material. As of October 31, 2019 , approximately $ 685.7 million of revenue is expected to be recognized from remaining performance obligations in the amount of approximately $481.4 million over the next 12 months and approximately $ 204.3 million thereafter.

Business Combination

Business Combination	9 Months Ended
	Oct. 31, 2019
Business Combinations [Abstract]
Business Combination	Business Combination On January 3, 2019, we acquired all outstanding stock of Hortonworks, a provider of enterprise-grade, global data management platforms, services and solutions for approximately $1.2 billion in consideration consisting of common stock and equity awards assumed. We have included the financial results of Hortonworks in our consolidated financial statements from the date of merger. The transaction costs associated with the merger were approximately $22.8 million , which were included in general and administrative expense in our consolidated statement of operations for the year ended January 31, 2019. The merger-date fair value of the consideration transferred for Hortonworks was approximately $1.2 billion , which consisted of the following (in thousands except for share data): Fair Value Common stock (111,304,700 shares) $ 1,154,230 Fair value of share-based compensation awards assumed 48,197 Total $ 1,202,427 The $1.2 billion fair value consideration transferred was determined based on $10.37 per share, the closing price of our stock on the closing date of the merger with Hortonworks (the Closing Date), for all shares of Hortonworks common stock outstanding immediately prior to the Closing Date. The fair value of the post share conversion of 4.1 million stock options, 0.9 million of performance restricted stock units and 9.0 million restricted stock units assumed was determined using the Black-Scholes option pricing model for stock option awards and observable market price of our common stock for valuation of performance and restricted stock units. The share conversion ratio of 1.305 was applied to convert Hortonworks’ outstanding equity awards for Hortonworks’ common stock into equity awards for shares of our common stock. The total fair value of the stock-based awards is $63.5 million , which will be recognized as stock-based compensation expense over a weighted-average period of 1.5 years from the date of acquisition. Additionally, we recognized $13.1 million of additional stock-based compensation expense during the year ended January 31, 2019 due to the acceleration and modification of certain stock awards assumed as part of the merger with Hortonworks. The following table summarizes the fair values of assets acquired and liabilities assumed as of the Closing Date (in thousands): Fair Value Cash and cash equivalents $ 40,886 Marketable securities, current 8,103 Accounts receivable, net 165,958 Prepaid expenses and other assets 23,512 Property and equipment, net 8,091 Intangible assets 682,600 Accounts payable (2,888 ) Accrued compensation (31,007 ) Other accrued liabilities and long-term liabilities (12,163 ) Deferred revenue (233,500 ) Total net assets acquired and liabilities assumed $ 649,592 The fair values of assets acquired and liabilities assumed, including current and noncurrent income taxes payable and deferred taxes, are preliminary and may be subject to change as additional information is received and certain tax returns are finalized. We will finalize the valuation in the fourth quarter of this fiscal year. The $552.8 million excess of purchase consideration over the fair value of total net assets acquired and liabilities assumed was recorded as goodwill. Goodwill of $525.2 million and $27.6 million has been allocated to our subscription and services segments, respectively, based on the forecasted post-merger financial results of the subscription and services segments. The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the Closing Date: Fair Value Estimated Remaining Useful Life (in thousands) (in years) Unbilled contracts $ 18,300 2 Customer relationships 661,600 10 Trade names 2,700 1 Total identifiable intangible assets $ 682,600 Unbilled contracts represent the fair value of Hortonworks’ customer contracts that have yet to be billed at the Closing Date. Customer relationships represent the fair value of the underlying relationships with Hortonworks’ customers. Trade names represent Hortonworks’ trademarks, which consumers associate with the source and quality of Hortonworks’ products and services. The estimated fair values of the identifiable intangible assets acquired were determined based on a combination of the income and market approaches to measure the fair value of unbilled contracts, customer relationships and trade names. The fair value of unbilled contracts and customer relationships was measured based on the income approach, specifically the multi-period excess earnings method. The fair value of the trade names was determined using the relief-from-royalty method. The estimated remaining useful life of the customer relationships intangible asset is approximately 10 years , which approximates the mean and median of a benchmarking dataset from similar mergers or acquisitions over the last 7 years , focusing on transactions where customer relationships is the primary asset of the transaction. The estimated remaining useful life of unbilled contracts is based on the period over which the support and services are expected to be rendered and the estimated remaining useful life of trade names is based on our expected time frame to phase out the Hortonworks trade names. The goodwill balance of $552.8 million is attributable to the expansion of our product offerings and expected synergies of the combined workforce, products and technologies with Hortonworks. The goodwill balance is not deductible for U.S. income tax purposes.

Cash Equivalents and Marketable

Cash Equivalents and Marketable Securities	9 Months Ended
	Oct. 31, 2019
Cash and Cash Equivalents [Abstract]
Cash Equivalents and Marketable Securities	Cash Equivalents and Marketable Securities The following are the fair values of our cash equivalents and marketable securities as of October 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 36,930 $ — $ — $ 36,930 Marketable securities: Asset-backed securities 70,417 165 (3 ) 70,579 Corporate notes and obligations 196,716 935 (1 ) 197,650 Commercial paper 57,493 12 — 57,505 Municipal securities 4,999 — — 4,999 Certificates of deposit 17,894 29 — 17,923 U.S. treasury securities 36,981 40 — 37,021 Total cash equivalents and marketable securities $ 421,430 $ 1,181 $ (4 ) $ 422,607 The following are the fair values of our cash equivalents and marketable securities as of January 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 29,966 $ — $ — $ 29,966 Commercial paper 9,157 1 — 9,158 Certificates of deposit 3,999 1 — 4,000 Reverse repurchase agreements 5,000 — — 5,000 Marketable securities: Asset-backed securities 63,626 16 (57 ) 63,585 Corporate notes and obligations 140,710 136 (111 ) 140,735 Commercial paper 101,712 9 (1 ) 101,720 Certificates of deposit 46,551 21 (1 ) 46,571 U.S. treasury securities 21,949 — (14 ) 21,935 Foreign government obligations 4,000 — — 4,000 Total cash equivalents and marketable securities $ 426,670 $ 184 $ (184 ) $ 426,670 The contractual maturities of investments in available-for-sale securities were as follows (in thousands): October 31, 2019 January 31, 2019 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 331,696 $ 332,293 $ 380,461 $ 380,335 Due after one year through five years 89,734 90,314 46,209 46,335 Total investments in marketable securities $ 421,430 $ 422,607 $ 426,670 $ 426,670 The unrealized loss for each of these fixed rate marketable securities was not material as of October 31, 2019 and January 31, 2019 . We do not believe any of the unrealized losses represent an other‑than‑temporary impairment based on our evaluation of available evidence as of October 31, 2019 and January 31, 2019 . We expect to receive the full principal and interest on all of these marketable securities and have the ability and intent to hold these investments until a recovery of fair value. Realized gains on our cash equivalents and marketable securities are included in other income (expense), net on the condensed consolidated statement of operations and were not material for the three and nine months ended October 31, 2019 and 2018 . Reclassification adjustments out of accumulated other comprehensive loss into net loss were not material for the three and nine months ended October 31, 2019 and 2018 .

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement Our financial assets and liabilities consist principally of cash and cash equivalents, marketable securities, restricted cash, accounts receivable and accounts payable. We measure and record certain financial assets and liabilities at fair value on a recurring basis. The estimated fair value of accounts receivable and accounts payable approximates their carrying value due to their short‑term nature. Cash equivalents, marketable securities and restricted cash are recorded at estimated fair value. All of our cash equivalents and marketable securities are classified within Level 1 or Level 2 because the cash equivalents and marketable securities are valued using quoted market prices or alternative pricing sources and models utilizing observable market inputs. We follow a three‑level valuation hierarchy for disclosure of fair value measurements as follows: Level 1 Inputs are unadjusted quoted prices in active markets for identical assets or liabilities at the measurement date. Level 2 Inputs (other than quoted market prices included in Level 1) are either directly or indirectly observable for the asset or liability through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life. Level 3 Inputs reflect management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. Consideration is given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model. The following table represents our financial assets according to the fair value hierarchy, measured at fair value as of October 31, 2019 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 36,930 $ — $ 36,930 Marketable securities: Asset-backed securities — 70,579 70,579 Corporate notes and obligations — 197,650 197,650 Commercial paper — 57,505 57,505 Municipal securities — 4,999 4,999 Certificates of deposit — 17,923 17,923 U.S. treasury securities — 37,021 37,021 Total financial assets $ 36,930 $ 385,677 $ 422,607 The following table represents our financial assets according to the fair value hierarchy, measured at fair value as of January 31, 2019 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 29,966 $ — $ 29,966 Commercial paper — 9,158 9,158 Certificates of deposits — 4,000 4,000 Reverse repurchase agreements — 5,000 5,000 Marketable securities: Asset-backed securities — 63,585 63,585 Corporate notes and obligations — 140,735 140,735 Commercial paper — 101,720 101,720 Certificates of deposit — 46,571 46,571 U.S. treasury securities 14,950 6,985 21,935 Foreign government obligations — 4,000 4,000 Total financial assets $ 44,916 $ 381,754 $ 426,670 We value our Level 1 assets using quoted prices in active markets for identical instruments. We value our Level 2 assets with the help of a third‑party pricing service using quoted market prices for similar instruments, non-binding market prices that are corroborated by observable market data, or pricing models such as discounted cash flow techniques. We use such pricing data as the primary input, to which we have not made any material adjustments during the periods presented, to make our determination and assessments as to the ultimate valuation of these assets. During the nine months ended October 31, 2019 and the year ended January 31, 2019, there were no transfers between Level 1 or Level 2 investments.

Balance Sheet Components

Balance Sheet Components	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance Sheet Components	Balance Sheet Components Property and Equipment, Net The cost and accumulated depreciation and amortization of property and equipment are as follows (in thousands): As of October 31, 2019 January 31, 2019 Computer equipment and software $ 22,552 $ 18,259 Office furniture and equipment 12,693 11,907 Leasehold improvements 24,738 24,316 Property and equipment, gross 59,983 54,482 Less: accumulated depreciation and amortization (35,459 ) (26,863 ) Property and equipment, net $ 24,524 $ 27,619 Depreciation expense was $2.9 million and $2.0 million for the three months ended October 31, 2019 and 2018 , respectively, and $9.0 million and $5.8 million for the nine months ended October 31, 2019 and 2018 , respectively. Intangible Assets Intangible assets consisted of the following as of October 31, 2019 (dollars in thousands) : Gross Fair Accumulated Net Book Weighted Average Developed technology $ 17,570 $ (10,754 ) $ 6,816 0.3 Customer relationships and other acquired intangible assets 671,447 (63,801 ) 607,646 9.2 Unbilled contracts 18,300 (7,625 ) 10,675 1.2 Total $ 707,317 $ (82,180 ) $ 625,137 8.9 Intangible assets consisted of the following as of January 31, 2019 (dollars in thousands) : Gross Fair Accumulated Net Book Weighted Average Developed technology $ 11,986 $ (9,258 ) $ 2,728 1.9 Customer relationships and other acquired intangible assets 671,097 (12,036 ) 659,061 9.9 Unbilled contracts 18,300 (763 ) 17,537 1.9 Total $ 701,383 $ (22,057 ) $ 679,326 9.6 Amortization expense for intangible assets was $20.0 million and $0.7 million for the three months ended October 31, 2019 and 2018 , respectively, and $60.1 million and $2.0 million for nine months ended October 31, 2019 and 2018 , respectively. The expected future amortization expense of these intangible assets as of October 31, 2019 is as follows (in thousands): Remaining three months of fiscal 2020 $ 19,902 fiscal 2021 76,696 fiscal 2022 67,828 fiscal 2023 67,445 fiscal 2024 67,328 fiscal 2025 and thereafter 325,938 Total amortization expense $ 625,137 Accrued Compensation Accrued compensation consists of the following (in thousands): As of October 31, January 31, Accrued salaries, benefits and commissions $ 17,849 $ 20,563 Accrued bonuses 17,484 14,832 Accrued compensation-related taxes 13,053 11,797 Employee stock purchase plan withholdings 7,200 1,902 Other 2,966 4,496 Total accrued compensation $ 58,552 $ 53,590 Other Accrued Liabilities Other accrued liabilities consist of the following (in thousands): As of October 31, January 31, Accrued professional costs $ 8,816 $ 6,500 Accrued taxes 4,627 3,731 Accrued travel 2,288 2,751 Other 9,850 11,566 Total other accrued liabilities $ 25,581 $ 24,548 Other includes amounts owed to third‑party vendors that provide marketing, corporate event planning, cloud‑computing services, self-insurance costs and customer deposits.

Leases

Leases	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Leases	Leases We have entered into various non-cancelable operating lease agreements for our facilities. Our leases have various expiration dates through September 2031. Many leases include one or more options to renew. We do not assume renewals in our determination of the lease term unless the renewals are deemed to be reasonably assured at lease commencement. As described within Note 2, we adopted ASU 2016-02, Leases , as of February 1, 2019, which requires, among other changes, operating leases with terms exceeding twelve months to be recognized as ROU assets and lease liabilities on the condensed consolidated balance sheets. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. The lease term is determined to be the non-cancelable period including any lessee renewal options which are considered to be reasonably certain of exercise. The interest rate implicit in the lease contracts is typically not readily determinable. As such, we utilized the appropriate incremental borrowing rate based on information available at the commencement date, which is the rate incurred to borrow on a collateralized basis over a similar term in a similar economic environment. Components of lease expense are summarized as follows (in thousands): Three Months Ended October 31, 2019 Nine Months Ended October 31, 2019 Operating lease cost $ 10,999 $ 33,897 Short-term lease cost 600 1,799 Sublease income (3,893 ) (11,816 ) Net lease cost $ 7,706 $ 23,880 Lease term and discount rate information are summarized as follows: As of October 31, 2019 Weighted Average Remaining Lease Term (years) 7.1 Weighted Average Discount Rate 6.0 % Maturities of lease liabilities as of October 31, 2019 are as follows (in thousands): Minimum Lease Payments, Gross Remaining three months of fiscal 2020 $ 8,167 fiscal 2021 43,825 fiscal 2022 39,027 fiscal 2023 35,291 fiscal 2024 35,906 fiscal 2025 and thereafter 117,293 Total lease payments $ 279,509 Less imputed interest (52,818 ) Present value of lease liabilities $ 226,691 We expect to receive $35.4 million of sublease rental proceeds in the next five years as of October 31, 2019 .

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Letters of Credit As of October 31, 2019 and January 31, 2019 , we had a total of $19.8 million and 20.0 million , respectively, in letters of credit outstanding in favor of certain landlords for office space. These letters of credit renew annually and expire at various dates through 2027. Indemnification From time to time, we enter into certain types of contracts that contingently require us to indemnify various parties against claims from third parties. These contracts primarily relate to (i) certain real estate leases under which we may be required to indemnify property owners for environmental and other liabilities and other claims arising from our use of the applicable premises, (ii) our bylaws, under which we must indemnify directors and executive officers, and may indemnify other officers and employees, for liabilities arising out of their relationship with us, (iii) contracts under which we must indemnify directors and certain officers for liabilities arising out of their relationship with us, (iv) contracts under which we may be required to indemnify customers or partners against certain claims, including claims from third parties asserting, among other things, infringement of their intellectual property rights, (v) engagement agreements and other contracts under which we may be required to indemnify financial and other professional advisors in connection with services provided to us, and (vi) procurement, consulting, or license agreements under which we may be required to indemnify vendors, consultants or licensors for certain claims, including claims that may be brought against them arising from our acts or omissions with respect to the supplied products, technology or services. From time to time, we may receive indemnification claims under these contracts in the normal course of business. In addition, under these contracts we may have to modify the accused infringing intellectual property and/or refund amounts received. In the event that one or more of these matters were to result in a claim against us, an adverse outcome, including a judgment or settlement, may cause a material adverse effect on our future business, operating results or financial condition. It is not possible to determine the maximum potential amount under these contracts due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. We maintain director and officer insurance, which may cover certain liabilities arising from our obligation to indemnify our directors and certain officers. To date, we have not incurred any material costs, and have not accrued any liabilities in the consolidated financial statements, as a result of these provisions. Contingencies In the ordinary course of business, we are or may be involved in a variety of litigation matters, suits, investigations, and proceedings, including actions with respect to intellectual property claims, government investigations, labor and employment claims, breach of contract claims, tax and other matters. Regardless of the outcome, these litigation matters can have an adverse impact on us because of defense costs, diversion of management resources, harm to reputation and other factors. In addition, it is possible that an unfavorable resolution of one or more such litigation matters could, in the future, materially and adversely affect our financial position, results of operations and cash flows in a particular period or subject us to an injunction that could seriously harm our business. We record a provision for contingent losses when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. With respect to our outstanding legal matters, our management believes that the amount or estimable range of possible loss will not, either individually or in the aggregate, have a material adverse effect on our business, consolidated financial position, results of operations or cash flows. However, the outcome of litigation is inherently uncertain. Therefore, if one or more of these legal matters were resolved against us for amounts in excess of our management’s expectations, our results of operations and financial condition including in a particular reporting period, could be materially adversely affected.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Oct. 31, 2019
Share-based Payment Arrangement [Abstract]
Stockholders' Equity	Stockholder’s Equity We maintain two stock-based compensation plans: the 2017 Equity Incentive Plan (2017 Plan) and the 2008 Equity Incentive Plan (2008 Plan), collectively referred to as the Stock Plans. We do not expect to grant any additional awards under the 2008 Plan. Outstanding awards under the 2008 Plan continue to be subject to the terms and conditions of the 2008 Plan. The number of shares reserved for issuance under our 2017 Plan increases automatically on the first day of February of each calendar year during the term of the 2017 Plan by a number of shares of common stock equal to the lesser of (i) 5% of the total outstanding shares of our common stock as of the immediately preceding January 31 or (ii) a number of shares determined by our board of directors. On February 1, 2019, 13,440,931 additional shares were authorized for issuance by the board of directors. As of October 31, 2019 , there were 73,741,909 shares of common stock reserved and available for future issuance under the Stock Plans. Stock options granted generally have a maximum term of ten years from the grant date, are exercisable upon vesting unless otherwise designated for early exercise by the board of directors at the time of grant, and generally vest over a period of three to four years , with 25% vesting after one year and then ratably on a monthly basis for the remaining two to three years . Stock Options The following table summarizes stock option activity and related information under the Stock Plans: Options Outstanding Stock Options Outstanding Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Aggregate Balance — January 31, 2019 19,117,696 $ 5.83 4.3 $ 154,431 Exercised (3,775,342 ) 2.85 — — Canceled (839,974 ) 15.42 — — Balance — October 31, 2019 14,502,380 6.05 2.3 55,442 The total intrinsic value of stock options exercised during the nine months ended October 31, 2019 and 2018 was $21.2 million and $26.3 million , respectively. The intrinsic value is the difference between the current fair market value of the stock for accounting purposes at the time of exercise and the exercise price of the stock option. As we have accumulated net operating losses, no future tax benefit related to stock option exercises has been recognized. The unamortized stock‑based compensation expense for stock options of $0.5 million as of October 31, 2019 will be recognized over the average remaining vesting period of 1.0 year . Restricted Stock Units We issue restricted stock units (RSUs) to employees and directors under the Stock Plans. For new employee grants, the RSUs generally meet the service‑based condition over a four-year period, with 25% met after one year and then ratably on a quarterly basis for the remaining three years . For continuing employee grants, the RSUs generally meet the service‑based condition pro‑rata quarterly over a period of three to four years . The following table summarizes RSU activity and related information under the Stock Plans: Restricted Stock Units Outstanding Number of Restricted Stock Units Weighted-Average Grant Date Fair Value Per Share Balance — January 31, 2019 35,058,103 $ 13.25 Granted 22,311,693 7.60 Canceled (7,481,304 ) 12.84 Vested and converted to shares (16,558,127 ) 11.86 Balance — October 31, 2019 33,330,365 10.45 The unamortized stock‑based compensation expense for RSUs of $285.8 million as of October 31, 2019 will be recognized over the average remaining vesting period of 1.8 years . Employee Stock Purchase Plan In March 2017, we adopted our 2017 Employee Stock Purchase Plan (ESPP). The ESPP became effective on April 27, 2017, the effective date of our IPO. Each offering period consists of a six ‑month purchase period (commencing each June 21 and December 21). We initially reserved 3,000,000 shares of our common stock for issuance under our ESPP. The number of shares reserved for issuance under our ESPP increases automatically on February 1 of each of the first 10 calendar years following the first offering date by the number of shares equal to the lesser of (i) 1% of the total outstanding shares of our common stock as of the immediately preceding January 31 (rounded to the nearest whole share) or (ii) a number of shares of our common stock determined by our board of directors. On February 1, 2019, 2,688,186 additional shares were authorized for issuance by the board of directors. As of October 31, 2019 , the total number shares available for grant under the ESPP was 4,666,446 shares. As of October 31, 2019 , $7.2 million has been withheld on behalf of employees for a future purchase under the ESPP and is recorded in accrued compensation in our condensed consolidated balance sheets. See Note 7 for additional information.

Income Taxes

Income Taxes	9 Months Ended
	Oct. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our quarterly income taxes reflect an estimate of our corresponding year’s annual effective tax rate and include, when applicable, adjustments for discrete items. For the nine months ended October 31, 2019 , our tax provision was $6.5 million compared to $3.6 million for the same period a year ago. The increased tax provision for the nine months ended October 31, 2019 primarily relates to the inclusion of legacy Hortonworks foreign income taxes on foreign earnings and withholding taxes on international sales.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Oct. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Certain members of our board of directors currently serve on the board of directors or as an executive officer of certain companies that are our customers. The aggregate revenue we recognized from these customers was $2.0 million and $4.3 million for the three months ended October 31, 2019 and 2018 , respectively, and $14.2 million and $14.3 million for the nine months ended October 31, 2019 and 2018 , respectively. There was $2.5 million in accounts receivable due from these customers as of each of October 31, 2019 and January 31, 2019 respectively.

Segment Information

Segment Information	9 Months Ended
	Oct. 31, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information In January 2019, we completed our merger with Hortonworks. The combined company operates under the Cloudera name. We have integrated Hortonworks into our ongoing business operations and our chief operating decision maker evaluates our financial information and resources and assesses the performance of these resources on a consolidated basis. Our results of operations for the three and nine months ended October 31, 2019 reflect the results of the combined entity. The results of the reportable segments are derived directly from our management reporting system and are based on our methods of internal reporting which are not necessarily in conformity with GAAP. Our management measures the performance of each segment based on several metrics, including contribution margin, as defined below. Our management does not use asset information to assess performance and make decisions regarding allocation of resources. Therefore, depreciation and amortization expense is not allocated among segments. Contribution margin is used, in part, to evaluate the performance of, and allocate resources to, each of the segments. Segment contribution margin includes segment revenue less the related cost of sales excluding certain operating expenses that are not allocated to segments because they are separately managed at the consolidated corporate level. These unallocated costs include stock‑based compensation expense, amortization of acquired intangible assets, direct sales and marketing costs, research and development costs, corporate general and administrative costs, such as legal and accounting, interest income, interest expense, and other income and expense. Financial information for each reportable segment was as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Revenue: Subscription $ 166,932 $ 100,757 $ 485,872 $ 283,318 Services 31,360 18,231 96,599 52,108 Total revenue $ 198,292 $ 118,988 $ 582,471 $ 335,426 * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments. Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Contribution margin: Subscription $ 143,775 $ 89,399 $ 417,908 $ 247,480 Services 8,576 4,541 22,320 8,953 Total segment contribution margin $ 152,351 $ 93,940 $ 440,228 $ 256,433 * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments. The reconciliation of segment financial information to our loss from operations is as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Segment contribution margin $ 152,351 $ 93,940 $ 440,228 $ 256,433 Amortization of acquired intangible assets (20,025 ) (657 ) (60,122 ) (1,971 ) Stock-based compensation expense (54,214 ) (21,890 ) (164,818 ) (67,731 ) Corporate costs, such as research and development, corporate general and administrative and other (160,579 ) (97,066 ) (490,605 ) (293,530 ) Loss from operations $ (82,467 ) $ (25,673 ) $ (275,317 ) $ (106,799 ) * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments. Sales outside of the United States represented approximately 39% and 35% of our total revenue for the three months ended October 31, 2019 and 2018 , respectively, and 38% and 34% for the nine months ended October 31, 2019 and 2018 , respectively. All revenues from customers outside of the United States are attributed to individual countries on an end‑customer basis, based on domicile of the purchasing entity, if known, or the location of the customer’s headquarters if the specific purchasing entity within the customer is unknown. As of October 31, 2019 and January 31, 2019 , assets located outside the United States were 5% and 4% of total assets, respectively.

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 The following table sets forth the calculation of basic and diluted net loss per share during the periods presented (in thousands, except per share data): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Numerator: Net loss $ (82,122 ) $ (25,857 ) $ (272,295 ) $ (107,128 ) Denominator: Weighted-average shares used in computing net loss, per share basic and diluted 283,267 152,245 277,260 149,507 Net loss per share, basic and diluted $ (0.29 ) $ (0.17 ) $ (0.98 ) $ (0.72 ) * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments. The following outstanding shares of common stock equivalents were excluded from the computation of the diluted net loss per share attributable to common stockholders for the periods presented because their effect would have been anti‑dilutive (in thousands): As of October 31, 2019 2018 Stock options to purchase common stock 14,502 15,684 Restricted stock units 33,330 17,582 Shares issuable pursuant to the ESPP 2,620 520 Total 50,452 33,786

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles (GAAP) in the United States and the applicable rules and regulations of the Securities and Exchange Commission (SEC) regarding interim financial reporting. The condensed consolidated financial statements include the results of Cloudera, Inc. and its wholly owned subsidiaries, which are located in various countries, including the United States, Australia, China, India, Germany, Ireland, The Netherlands, Singapore, Hungary and the United Kingdom. All intercompany balances and transactions have been eliminated upon consolidation. The consolidated balance sheet as of January 31, 2019 has been derived from the audited consolidated financial statements at that date but does not include all of the information and notes required by GAAP for complete financial statements. 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 information contained herein reflects all adjustments necessary for a fair presentation of our results of operations, financial position and cash flows. All such adjustments are of a normal, recurring nature. The results of operations for the three and nine months ended October 31, 2019 are not necessarily indicative of results to be expected for the full year ending January 31, 2020 or for any other interim period or for any other future year. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements in our Annual Report on Form 10-K for the year ended January 31, 2019 , filed with the SEC on March 29, 2019.
Fiscal Year	Our fiscal year ends on January 31. References to fiscal 2020 , for example, refer to the fiscal year ending January 31, 2020 .
Use of Estimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant items subject to such estimates include, but are not limited to, the useful lives of property and equipment and intangible assets, allowance for doubtful accounts, stock‑based compensation expense, bonus attainment, self‑insurance costs incurred, the fair value and useful lives of tangible and intangible assets acquired and liabilities assumed resulting from business combinations, the evaluation for impairment of intangible assets and goodwill, the fair value of our common stock prior to our IPO, estimated period of benefit for deferred contract costs, estimates related to our revenue recognition, such as the assessment of elements in a multi‑element arrangement and the fair value assigned to each element, contingencies, and the incremental borrowing rate used in discounting of our lease liabilities. These estimates and assumptions are based on management’s best estimates and judgment. Management regularly evaluates its estimates and assumptions using historical experience and other factors; however, actual results could differ significantly from these estimates.
Segments	We operate as two operating segments – subscription and services. Operating segments are defined as components of an enterprise for which separate financial information is evaluated regularly by the chief operating decision maker, who is our Interim Chief Executive Officer, in deciding how to allocate resources and assess performance.
Cash, Cash Equivalents and Restricted Cash	Cash equivalents consist of short‑term, highly liquid investments with original maturities of three months or less from the date of purchase. Restricted cash represents cash on deposit with financial institutions in support of letters of credit outstanding in favor of certain landlords for office space.
Concentration of Credit Risk and Significant Customers	Financial instruments that subject us to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities, restricted cash and accounts receivable. Our cash is deposited with high credit quality financial institutions. At times, such deposits may be in excess of the Federal Depository Insurance Corporation insured limits. We have not experienced any losses on these deposits. Our trade receivables are recorded at the invoice amount, net of an allowance for doubtful accounts, which is not material. The allowance for doubtful accounts reflects our best estimate of probable losses inherent in the receivable portfolio determined on the basis of the age of the receivable balance, historical experience, credit quality
Recently Adopted Accounting Standards	In June 2018, the Financial Accounting Standards Board (FASB) issued ASU 2018-07, Compensation-Stock Compensation Improvements to Nonemployee Share-Based Payment Accounting (Topic 718), which substantially aligns accounting for share-based payments to employees and non-employees. Under the standard, equity-classified share-based payment awards issued to nonemployees will be measured on the grant date, instead of the current requirement to remeasure the awards through the performance completion date. We adopted ASU 2018-07 as of February 1, 2019 and the standard did not have a material impact on our condensed consolidated financial statements for the three and nine months ended October 31, 2019 . In February 2018, the FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income , which provides entities the option to reclassify tax effects stranded in other comprehensive income as a result of the 2017 Tax Cuts and Jobs Act (the Tax Act) to retained earnings. We adopted ASU 2018-02 as of February 1, 2019. We do not have tax effects stranded or otherwise in other comprehensive income, as such the standard did not have an impact on our condensed consolidated financial statements for the three and nine months ended October 31, 2019 . In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , as amended, which requires lessees to recognize lease liabilities and corresponding right-of-use (ROU) assets on the balance sheet and to provide enhanced disclosures surrounding the amount, timing and uncertainty of cash flows arising from leasing arrangements. We adopted the new standard on February 1, 2019 using the modified retrospective transition approach by applying the standard to all leases existing at the date of initial application and not restating comparative periods. Under this transition method, the application date of the new standard begins in the reporting period in which we have adopted the standard. We have elected the package of practical expedients permitted under the transition guidance, which allowed us not to reassess (1) whether any expired or existing contracts are or contain leases, (2) lease classification for any expired or existing leases and (3) the accounting for any initial direct costs for any expired or existing leases. We have also elected the short-term lease exception and will not recognize ROU assets or lease liabilities for qualifying leases (leases with a term of less than 12 months from lease commencement). See Note 8 for further information on the implementation of the standard. In May 2014, the FASB issued ASU No. 2014‑09, Revenue from Contracts with Customers (Topic 606) , which amended the existing FASB Accounting Standards Codification. Topic 606 establishes a principle for recognizing revenue upon the transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services and also provides guidance on the recognition of costs related to obtaining and fulfilling customer contracts. Topic 606 also includes Subtopic 340-40, Other Assets and Deferred Costs ; Contracts with Customers , which requires the deferral of incremental costs of obtaining a contract with a customer. Collectively, we refer to Topic 606 and Subtopic 340-40 as the “new revenue standard.” We adopted the new revenue standard utilizing the full retrospective method effective January 31, 2019. The tables below summarize the impacts of the full retrospective adoption of the new revenue standard. Our financial reporting under the new revenue standard is included in the columns labeled “As Adjusted” in the tables below. Select line items from the condensed consolidated statement of operations for the three and nine months ended October 31, 2018 reflecting the adoption of the new revenue standard are as follows (in thousands, except per share data): Three Months Ended October 31, 2018 Nine Months Ended October 31, 2018 As Previously Reported Adjustments As Adjusted As Previously Reported Adjustments As Adjusted Revenue: Subscription $ 99,698 $ 1,059 $ 100,757 $ 278,720 $ 4,598 $ 283,318 Services 18,485 (254 ) 18,231 52,508 (400 ) 52,108 Operating expenses: Sales and marketing 54,927 128 55,055 169,870 376 170,246 Net loss (26,534 ) 677 (25,857 ) (110,950 ) 3,822 (107,128 ) Net loss per share of common stock, basic and diluted $ (0.17 ) $ — $ (0.17 ) $ (0.74 ) $ 0.02 $ (0.72 ) Select line items from the condensed consolidated statements of cash flows for the nine months ended October 31, 2018 reflecting the adoption of the new revenue standard are as follows (in thousands): Nine months ended October 31, 2018 As Previously Reported Adjustments As Adjusted CASH FLOWS FROM OPERATING ACTIVITIES Net loss $ (110,950 ) $ 3,822 $ (107,128 ) Adjustments to reconcile net loss to net cash provided by operating activities: Amortization of deferred costs — 21,794 21,794 Changes in assets and liabilities: Accounts receivable, net 38,310 (149 ) 38,161 Contract assets — 2,821 2,821 Deferred costs — (21,419 ) (21,419 ) Accrued expenses and other liabilities 4,102 108 4,210 Other contract liabilities — (108 ) (108 ) Deferred revenue (14,118 ) (6,869 ) (20,987 ) Net cash used in operating activities (5,974 ) — (5,974 ) See Note 3 and Note 8 to our condensed consolidated financial statements for additional information on the new revenue standard and the adoption of Topic 842. Recently Issued Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires an entity to utilize a new impairment model known as the current expected credit loss model in place of the currently used incurred loss method. Under this update, on initial recognition and at each reporting period, an entity will be required to recognize an allowance that reflects the entity’s current estimate of credit losses expected to be incurred over the life of the financial instrument. For trade receivables, loans, and other financial instruments, an entity will be required to use a forward-looking expected loss model to recognize credit losses that are probable. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. In April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments , to eliminate inconsistencies and provide clarifications to the transition requirements of ASU No. 2016-13. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019, and requires a cumulative effect adjustment to the balance sheet as of the beginning of the first reporting period in which the guidance is effective. We plan to adopt this standard on February 1, 2020. We are currently in the process of evaluating the impact ASU 2016-13 will have on our consolidated financial statements. The effect on our condensed consolidated financial statements will largely depend on the composition and credit quality of our investment portfolio and trade receivables as well as the economic conditions at the time of adoption. In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350) : Simplifying the Test for Goodwill Impairment , which eliminates step two from the goodwill impairment test. Under this standard, an entity should recognize an impairment charge for the amount by which the carrying amount of a reporting unit exceeds its fair value up to the amount of goodwill allocated to that reporting unit. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019. We are currently in the process of evaluating the impact ASU 2017-04 will have on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement , which amends ASC 820, Fair Value Measurement . ASU 2018-13 modifies the disclosure requirements for fair value measurements by removing, modifying, or adding certain disclosures. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019. We do not anticipate that ASU 2018-13 will have a material impact on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software : Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force), which aligns the requirements for capitalizing implementation costs in a cloud computing arrangement service contract with the requirements for capitalizing implementation costs incurred for an internal-use software license. The standard is effective for annual reporting periods and interim periods within those years, beginning after December 15, 2019, with early adoption permitted. We do not anticipate that ASU 2018-15 will have a material impact on our consolidated financial statements. Changes in Accounting Policies Leases As a result of the adoption of Topic 842, we have also made changes to our accounting policies with respect to leases. At the inception of a contract, we determine whether the contract is or contains a lease. All leases with a term greater than one year are recognized on the balance sheet as ROU assets and lease liabilities. We have elected the short-term leases practical expedient which allows any leases with a term of 12 months or less to be considered short-term and thus will not have a lease liability or ROU asset recognized on the balance sheet. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The incremental borrowing rate is the rate incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease, which we do not include in our minimum lease terms unless the options are reasonably certain to be exercised. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components which we have elected to account for as a single lease component. On the lease commencement date, we establish assets and liabilities for the present value of estimated future costs to retire long-lived assets at the termination or expiration of a lease. Such assets are depreciated over the lease term to operating expense. Additionally, we have entered into subleases for unoccupied leased office space. Any impairments to the ROU asset, leasehold improvements or other assets as a result of a sublease are recognized as an operating expense in the period the sublease is executed. Any sublease payments received in excess of the straight-line rent payments for the sublease are recorded as an offset to operating expenses and recognized over the sublease life.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Oct. 31, 2019
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents	Cash as reported on the condensed consolidated statements of cash flows consists of the following (in thousands): As of October 31, 2019 2018 Cash and cash equivalents $ 113,203 $ 64,632 Restricted cash 3,352 3,352 Cash, cash equivalents and restricted cash $ 116,555 $ 67,984 The following are the fair values of our cash equivalents and marketable securities as of October 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 36,930 $ — $ — $ 36,930 Marketable securities: Asset-backed securities 70,417 165 (3 ) 70,579 Corporate notes and obligations 196,716 935 (1 ) 197,650 Commercial paper 57,493 12 — 57,505 Municipal securities 4,999 — — 4,999 Certificates of deposit 17,894 29 — 17,923 U.S. treasury securities 36,981 40 — 37,021 Total cash equivalents and marketable securities $ 421,430 $ 1,181 $ (4 ) $ 422,607 The following are the fair values of our cash equivalents and marketable securities as of January 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 29,966 $ — $ — $ 29,966 Commercial paper 9,157 1 — 9,158 Certificates of deposit 3,999 1 — 4,000 Reverse repurchase agreements 5,000 — — 5,000 Marketable securities: Asset-backed securities 63,626 16 (57 ) 63,585 Corporate notes and obligations 140,710 136 (111 ) 140,735 Commercial paper 101,712 9 (1 ) 101,720 Certificates of deposit 46,551 21 (1 ) 46,571 U.S. treasury securities 21,949 — (14 ) 21,935 Foreign government obligations 4,000 — — 4,000 Total cash equivalents and marketable securities $ 426,670 $ 184 $ (184 ) $ 426,670
Schedule of Cash as Reported on the Condensed Consolidated Statements of Cash Flows	Cash as reported on the condensed consolidated statements of cash flows consists of the following (in thousands): As of October 31, 2019 2018 Cash and cash equivalents $ 113,203 $ 64,632 Restricted cash 3,352 3,352 Cash, cash equivalents and restricted cash $ 116,555 $ 67,984
Schedule of Adoption of New Revenue Standard on Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Cash Flows	Select line items from the condensed consolidated statement of operations for the three and nine months ended October 31, 2018 reflecting the adoption of the new revenue standard are as follows (in thousands, except per share data): Three Months Ended October 31, 2018 Nine Months Ended October 31, 2018 As Previously Reported Adjustments As Adjusted As Previously Reported Adjustments As Adjusted Revenue: Subscription $ 99,698 $ 1,059 $ 100,757 $ 278,720 $ 4,598 $ 283,318 Services 18,485 (254 ) 18,231 52,508 (400 ) 52,108 Operating expenses: Sales and marketing 54,927 128 55,055 169,870 376 170,246 Net loss (26,534 ) 677 (25,857 ) (110,950 ) 3,822 (107,128 ) Net loss per share of common stock, basic and diluted $ (0.17 ) $ — $ (0.17 ) $ (0.74 ) $ 0.02 $ (0.72 ) Select line items from the condensed consolidated statements of cash flows for the nine months ended October 31, 2018 reflecting the adoption of the new revenue standard are as follows (in thousands): Nine months ended October 31, 2018 As Previously Reported Adjustments As Adjusted CASH FLOWS FROM OPERATING ACTIVITIES Net loss $ (110,950 ) $ 3,822 $ (107,128 ) Adjustments to reconcile net loss to net cash provided by operating activities: Amortization of deferred costs — 21,794 21,794 Changes in assets and liabilities: Accounts receivable, net 38,310 (149 ) 38,161 Contract assets — 2,821 2,821 Deferred costs — (21,419 ) (21,419 ) Accrued expenses and other liabilities 4,102 108 4,210 Other contract liabilities — (108 ) (108 ) Deferred revenue (14,118 ) (6,869 ) (20,987 ) Net cash used in operating activities (5,974 ) — (5,974 )

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Oct. 31, 2019
Revenue from Contract with Customer [Abstract]
Summary of Contract Liabilities Balances and Significant Changes in Contract Assets and Liabilities Balances	The following table reflects our contract liabilities balances (in thousands): October 31, January 31, Deferred revenue, current $ 364,442 $ 390,965 Other contract liabilities, current 7,732 17,177 Deferred revenue, non-current 80,729 116,604 Other contract liabilities, non-current 931 1,296 Total contract liabilities $ 453,834 $ 526,042 Significant changes in the contract assets and the contract liabilities balances during the periods are as follows (in thousands): Contract Assets Contract Liabilities January 31, 2019 $ 4,824 $ 526,042 Amount transferred to receivables from contract assets (4,041 ) — Additions to contract assets 4,572 — Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period — (143,778 ) Increases due to invoicing prior to satisfaction of performance obligations — 104,075 April 30, 2019 5,355 486,339 Amount transferred to receivables from contract assets (4,091 ) — Additions to contract assets 4,305 — Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period — (144,776 ) Increases due to invoicing prior to satisfaction of performance obligations — 122,357 July 31, 2019 5,569 463,920 Amount transferred to receivables from contract assets (3,232 ) — Additions to contract assets 3,185 — Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period — (147,270 ) Increases due to invoicing prior to satisfaction of performance obligations — 137,184 October 31, 2019 $ 5,522 $ 453,834

Business Combination (Tables)

Business Combination (Tables)	9 Months Ended
	Oct. 31, 2019
Business Combinations [Abstract]
Schedule of Fair Value of Consideration Transferred	The merger-date fair value of the consideration transferred for Hortonworks was approximately $1.2 billion , which consisted of the following (in thousands except for share data): Fair Value Common stock (111,304,700 shares) $ 1,154,230 Fair value of share-based compensation awards assumed 48,197 Total $ 1,202,427
Summary of Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the fair values of assets acquired and liabilities assumed as of the Closing Date (in thousands): Fair Value Cash and cash equivalents $ 40,886 Marketable securities, current 8,103 Accounts receivable, net 165,958 Prepaid expenses and other assets 23,512 Property and equipment, net 8,091 Intangible assets 682,600 Accounts payable (2,888 ) Accrued compensation (31,007 ) Other accrued liabilities and long-term liabilities (12,163 ) Deferred revenue (233,500 ) Total net assets acquired and liabilities assumed $ 649,592
Summary of Components of Identifiable Intangible Assets Acquired and Estimated Useful Lives	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the Closing Date: Fair Value Estimated Remaining Useful Life (in thousands) (in years) Unbilled contracts $ 18,300 2 Customer relationships 661,600 10 Trade names 2,700 1 Total identifiable intangible assets $ 682,600

Cash Equivalents and Marketab_2

Cash Equivalents and Marketable Securities (Tables)	9 Months Ended
	Oct. 31, 2019
Cash and Cash Equivalents [Abstract]
Schedule of Fair Values of Cash Equivalents	Cash as reported on the condensed consolidated statements of cash flows consists of the following (in thousands): As of October 31, 2019 2018 Cash and cash equivalents $ 113,203 $ 64,632 Restricted cash 3,352 3,352 Cash, cash equivalents and restricted cash $ 116,555 $ 67,984 The following are the fair values of our cash equivalents and marketable securities as of October 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 36,930 $ — $ — $ 36,930 Marketable securities: Asset-backed securities 70,417 165 (3 ) 70,579 Corporate notes and obligations 196,716 935 (1 ) 197,650 Commercial paper 57,493 12 — 57,505 Municipal securities 4,999 — — 4,999 Certificates of deposit 17,894 29 — 17,923 U.S. treasury securities 36,981 40 — 37,021 Total cash equivalents and marketable securities $ 421,430 $ 1,181 $ (4 ) $ 422,607 The following are the fair values of our cash equivalents and marketable securities as of January 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 29,966 $ — $ — $ 29,966 Commercial paper 9,157 1 — 9,158 Certificates of deposit 3,999 1 — 4,000 Reverse repurchase agreements 5,000 — — 5,000 Marketable securities: Asset-backed securities 63,626 16 (57 ) 63,585 Corporate notes and obligations 140,710 136 (111 ) 140,735 Commercial paper 101,712 9 (1 ) 101,720 Certificates of deposit 46,551 21 (1 ) 46,571 U.S. treasury securities 21,949 — (14 ) 21,935 Foreign government obligations 4,000 — — 4,000 Total cash equivalents and marketable securities $ 426,670 $ 184 $ (184 ) $ 426,670
Schedule of Fair Values of Marketable Securities	The following are the fair values of our cash equivalents and marketable securities as of October 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 36,930 $ — $ — $ 36,930 Marketable securities: Asset-backed securities 70,417 165 (3 ) 70,579 Corporate notes and obligations 196,716 935 (1 ) 197,650 Commercial paper 57,493 12 — 57,505 Municipal securities 4,999 — — 4,999 Certificates of deposit 17,894 29 — 17,923 U.S. treasury securities 36,981 40 — 37,021 Total cash equivalents and marketable securities $ 421,430 $ 1,181 $ (4 ) $ 422,607 The following are the fair values of our cash equivalents and marketable securities as of January 31, 2019 (in thousands): Amortized Unrealized Unrealized Estimated Cash equivalents: Money market funds $ 29,966 $ — $ — $ 29,966 Commercial paper 9,157 1 — 9,158 Certificates of deposit 3,999 1 — 4,000 Reverse repurchase agreements 5,000 — — 5,000 Marketable securities: Asset-backed securities 63,626 16 (57 ) 63,585 Corporate notes and obligations 140,710 136 (111 ) 140,735 Commercial paper 101,712 9 (1 ) 101,720 Certificates of deposit 46,551 21 (1 ) 46,571 U.S. treasury securities 21,949 — (14 ) 21,935 Foreign government obligations 4,000 — — 4,000 Total cash equivalents and marketable securities $ 426,670 $ 184 $ (184 ) $ 426,670
Schedule of Contractual Maturities of Investments in Available-for-Sale Securities	The contractual maturities of investments in available-for-sale securities were as follows (in thousands): October 31, 2019 January 31, 2019 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 331,696 $ 332,293 $ 380,461 $ 380,335 Due after one year through five years 89,734 90,314 46,209 46,335 Total investments in marketable securities $ 421,430 $ 422,607 $ 426,670 $ 426,670

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Financial Assets According to Fair Value Hierarchy, Measured at Fair Value	The following table represents our financial assets according to the fair value hierarchy, measured at fair value as of October 31, 2019 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 36,930 $ — $ 36,930 Marketable securities: Asset-backed securities — 70,579 70,579 Corporate notes and obligations — 197,650 197,650 Commercial paper — 57,505 57,505 Municipal securities — 4,999 4,999 Certificates of deposit — 17,923 17,923 U.S. treasury securities — 37,021 37,021 Total financial assets $ 36,930 $ 385,677 $ 422,607 The following table represents our financial assets according to the fair value hierarchy, measured at fair value as of January 31, 2019 (in thousands): Level 1 Level 2 Total Cash equivalents: Money market funds $ 29,966 $ — $ 29,966 Commercial paper — 9,158 9,158 Certificates of deposits — 4,000 4,000 Reverse repurchase agreements — 5,000 5,000 Marketable securities: Asset-backed securities — 63,585 63,585 Corporate notes and obligations — 140,735 140,735 Commercial paper — 101,720 101,720 Certificates of deposit — 46,571 46,571 U.S. treasury securities 14,950 6,985 21,935 Foreign government obligations — 4,000 4,000 Total financial assets $ 44,916 $ 381,754 $ 426,670

Balance Sheet Components (Table

Balance Sheet Components (Tables)	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Cost and Accumulated Depreciation and Amortization of Property and Equipment	The cost and accumulated depreciation and amortization of property and equipment are as follows (in thousands): As of October 31, 2019 January 31, 2019 Computer equipment and software $ 22,552 $ 18,259 Office furniture and equipment 12,693 11,907 Leasehold improvements 24,738 24,316 Property and equipment, gross 59,983 54,482 Less: accumulated depreciation and amortization (35,459 ) (26,863 ) Property and equipment, net $ 24,524 $ 27,619
Schedule of Intangible Assets	Intangible assets consisted of the following as of October 31, 2019 (dollars in thousands) : Gross Fair Accumulated Net Book Weighted Average Developed technology $ 17,570 $ (10,754 ) $ 6,816 0.3 Customer relationships and other acquired intangible assets 671,447 (63,801 ) 607,646 9.2 Unbilled contracts 18,300 (7,625 ) 10,675 1.2 Total $ 707,317 $ (82,180 ) $ 625,137 8.9 Intangible assets consisted of the following as of January 31, 2019 (dollars in thousands) : Gross Fair Accumulated Net Book Weighted Average Developed technology $ 11,986 $ (9,258 ) $ 2,728 1.9 Customer relationships and other acquired intangible assets 671,097 (12,036 ) 659,061 9.9 Unbilled contracts 18,300 (763 ) 17,537 1.9 Total $ 701,383 $ (22,057 ) $ 679,326 9.6
Schedule of Expected Future Amortization Expense of Intangible Assets	The expected future amortization expense of these intangible assets as of October 31, 2019 is as follows (in thousands): Remaining three months of fiscal 2020 $ 19,902 fiscal 2021 76,696 fiscal 2022 67,828 fiscal 2023 67,445 fiscal 2024 67,328 fiscal 2025 and thereafter 325,938 Total amortization expense $ 625,137
Schedule of Accrued Compensation and Other Accrued Liabilities	Accrued compensation consists of the following (in thousands): As of October 31, January 31, Accrued salaries, benefits and commissions $ 17,849 $ 20,563 Accrued bonuses 17,484 14,832 Accrued compensation-related taxes 13,053 11,797 Employee stock purchase plan withholdings 7,200 1,902 Other 2,966 4,496 Total accrued compensation $ 58,552 $ 53,590 Other Accrued Liabilities Other accrued liabilities consist of the following (in thousands): As of October 31, January 31, Accrued professional costs $ 8,816 $ 6,500 Accrued taxes 4,627 3,731 Accrued travel 2,288 2,751 Other 9,850 11,566 Total other accrued liabilities $ 25,581 $ 24,548

Leases (Tables)

Leases (Tables)	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Summary of Components of Lease Expense	Components of lease expense are summarized as follows (in thousands): Three Months Ended October 31, 2019 Nine Months Ended October 31, 2019 Operating lease cost $ 10,999 $ 33,897 Short-term lease cost 600 1,799 Sublease income (3,893 ) (11,816 ) Net lease cost $ 7,706 $ 23,880
Summary of Lease Term and Discount Rate	Lease term and discount rate information are summarized as follows: As of October 31, 2019 Weighted Average Remaining Lease Term (years) 7.1 Weighted Average Discount Rate 6.0 %
Summary of Maturities of Lease Liabilities	Maturities of lease liabilities as of October 31, 2019 are as follows (in thousands): Minimum Lease Payments, Gross Remaining three months of fiscal 2020 $ 8,167 fiscal 2021 43,825 fiscal 2022 39,027 fiscal 2023 35,291 fiscal 2024 35,906 fiscal 2025 and thereafter 117,293 Total lease payments $ 279,509 Less imputed interest (52,818 ) Present value of lease liabilities $ 226,691

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Oct. 31, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Stock Option Activity	The following table summarizes stock option activity and related information under the Stock Plans: Options Outstanding Stock Options Outstanding Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Aggregate Balance — January 31, 2019 19,117,696 $ 5.83 4.3 $ 154,431 Exercised (3,775,342 ) 2.85 — — Canceled (839,974 ) 15.42 — — Balance — October 31, 2019 14,502,380 6.05 2.3 55,442
Schedule of Restricted Stock Activity	The following table summarizes RSU activity and related information under the Stock Plans: Restricted Stock Units Outstanding Number of Restricted Stock Units Weighted-Average Grant Date Fair Value Per Share Balance — January 31, 2019 35,058,103 $ 13.25 Granted 22,311,693 7.60 Canceled (7,481,304 ) 12.84 Vested and converted to shares (16,558,127 ) 11.86 Balance — October 31, 2019 33,330,365 10.45

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Oct. 31, 2019
Segment Reporting [Abstract]
Schedule of Financial Information by Reportable Segment	Financial information for each reportable segment was as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Revenue: Subscription $ 166,932 $ 100,757 $ 485,872 $ 283,318 Services 31,360 18,231 96,599 52,108 Total revenue $ 198,292 $ 118,988 $ 582,471 $ 335,426 * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments. Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Contribution margin: Subscription $ 143,775 $ 89,399 $ 417,908 $ 247,480 Services 8,576 4,541 22,320 8,953 Total segment contribution margin $ 152,351 $ 93,940 $ 440,228 $ 256,433 * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
Reconciliation of Segment Financial Information to Loss from Operations	The reconciliation of segment financial information to our loss from operations is as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Segment contribution margin $ 152,351 $ 93,940 $ 440,228 $ 256,433 Amortization of acquired intangible assets (20,025 ) (657 ) (60,122 ) (1,971 ) Stock-based compensation expense (54,214 ) (21,890 ) (164,818 ) (67,731 ) Corporate costs, such as research and development, corporate general and administrative and other (160,579 ) (97,066 ) (490,605 ) (293,530 ) Loss from operations $ (82,467 ) $ (25,673 ) $ (275,317 ) $ (106,799 ) * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	9 Months Ended
	Oct. 31, 2019
Earnings Per Share [Abstract]
Schedule of the Calculation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders	The following table sets forth the calculation of basic and diluted net loss per share during the periods presented (in thousands, except per share data): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Numerator: Net loss $ (82,122 ) $ (25,857 ) $ (272,295 ) $ (107,128 ) Denominator: Weighted-average shares used in computing net loss, per share basic and diluted 283,267 152,245 277,260 149,507 Net loss per share, basic and diluted $ (0.29 ) $ (0.17 ) $ (0.98 ) $ (0.72 ) * As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share	The following outstanding shares of common stock equivalents were excluded from the computation of the diluted net loss per share attributable to common stockholders for the periods presented because their effect would have been anti‑dilutive (in thousands): As of October 31, 2019 2018 Stock options to purchase common stock 14,502 15,684 Restricted stock units 33,330 17,582 Shares issuable pursuant to the ESPP 2,620 520 Total 50,452 33,786

Organization and Description _2

Organization and Description of Business - Narrative (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accumulated deficit	$ 1,421,537	$ 1,149,242

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details)	9 Months Ended
	Oct. 31, 2019segment
Accounting Policies [Abstract]
Number of operating segments	2

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Cash as Reported on the Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019	Oct. 31, 2018		Jan. 31, 2018	[1]
Accounting Policies [Abstract]
Cash and cash equivalents	$ 113,203	$ 158,672	$ 64,632
Restricted cash	3,352	3,367	3,352
Cash, cash equivalents and restricted cash	$ 116,555	$ 162,039	$ 67,984	[1]	$ 61,299
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Schedule of Adoption of New Revenue Standard on Condensed Consolidated Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended			9 Months Ended
		Oct. 31, 2019	Oct. 31, 2018		Oct. 31, 2019	Oct. 31, 2018
Revenue:
Total revenue		$ 198,292	$ 118,988	[1]	$ 582,471	$ 335,426	[1]
Operating expenses:
Sales and marketing	[2],[3]	117,783	55,055	[1]	349,657	170,246	[1]
Net loss		$ (82,122)	$ (25,857)	[4],[5]	$ (272,295)	$ (107,128)	[1],[4],[6]
Net loss per share of common stock, basic and diluted (in dollars per share)		$ (0.29)	$ (0.17)	[1]	$ (0.98)	$ (0.72)	[1]
As Previously Reported
Operating expenses:
Sales and marketing			$ 54,927			$ 169,870
Net loss			$ (26,534)			$ (110,950)
Net loss per share of common stock, basic and diluted (in dollars per share)			$ (0.17)			$ (0.74)
Subscription
Revenue:
Total revenue		$ 166,932	$ 100,757	[1]	$ 485,872	$ 283,318	[1]
Subscription | As Previously Reported
Revenue:
Total revenue			99,698			278,720
Services
Revenue:
Total revenue		$ 31,360	18,231	[1]	$ 96,599	52,108	[1]
Services | As Previously Reported
Revenue:
Total revenue			18,485			52,508
Accounting Standards Update 2014-09 | Adjustments
Operating expenses:
Sales and marketing			128			376
Net loss			$ 677			$ 3,822
Net loss per share of common stock, basic and diluted (in dollars per share)			$ 0			$ 0.02
Accounting Standards Update 2014-09 | Subscription | Adjustments
Revenue:
Total revenue			$ 1,059			$ 4,598
Accounting Standards Update 2014-09 | Services | Adjustments
Revenue:
Total revenue			$ (254)			$ (400)
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	Amounts include amortization of acquired intangible assets as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue – subscription $ 2,761 $ 622 $ 8,358 $ 1,866 Sales and marketing 17,264 35 51,764 105
[3]	Amounts include stock‑based compensation expense as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue – subscription $ 4,306 $ 2,016 $ 12,314 $ 7,060 Cost of revenue – services 4,620 2,290 13,076 7,540 Research and development 19,697 7,805 55,991 26,002 Sales and marketing 17,400 5,504 46,199 14,281 General and administrative 8,191 4,275 37,238 12,848
[4]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[5]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[6]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Schedule of Adoption of New Revenue Standard on Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018		Oct. 31, 2019	Oct. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss	$ (82,122)	$ (25,857)	[1],[2]	$ (272,295)	$ (107,128)	[1],[3],[4]
Amortization of deferred costs				33,579	21,794	[3]
Accounts receivable, net				78,952	38,161	[3]
Contract assets				(698)	2,821	[3]
Deferred costs				(37,200)	(21,419)	[3]
Accrued expenses and other liabilities					4,210
Net cash used in operating activities				(27,410)	(5,974)	[3]
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss		(26,534)			(110,950)
Amortization of deferred costs					0
Accounts receivable, net					38,310
Contract assets					0
Deferred costs					0
Accrued expenses and other liabilities					4,102
Net cash used in operating activities					(5,974)
Other contract liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other contract liabilities / Deferred revenue				(9,810)	(108)	[3]
Other contract liabilities | As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other contract liabilities / Deferred revenue					0
Deferred revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other contract liabilities / Deferred revenue				$ (61,693)	(20,987)	[3]
Deferred revenue | As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other contract liabilities / Deferred revenue					(14,118)
Accounting Standards Update 2014-09 | Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss		$ 677			3,822
Amortization of deferred costs					21,794
Accounts receivable, net					(149)
Contract assets					2,821
Deferred costs					(21,419)
Accrued expenses and other liabilities					108
Net cash used in operating activities					0
Accounting Standards Update 2014-09 | Other contract liabilities | Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other contract liabilities / Deferred revenue					(108)
Accounting Standards Update 2014-09 | Deferred revenue | Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other contract liabilities / Deferred revenue					$ (6,869)
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[3]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[4]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Summary of Contract Liabilities Balances (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019
Disaggregation of Revenue [Line Items]
Total contract liabilities	$ 453,834	$ 463,920	$ 486,339	$ 526,042
Deferred Revenue
Disaggregation of Revenue [Line Items]
Contract with customer, liability, current	364,442			390,965
Contract with customer, liability, noncurrent	80,729			116,604
Other Contract Liabilities
Disaggregation of Revenue [Line Items]
Contract with customer, liability, current	7,732			17,177
Contract with customer, liability, noncurrent	$ 931			$ 1,296

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Summary of Significant Changes in Contract Assets and Liabilities Balances (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019
Contract Assets
Balance at beginning of period	$ 5,569	$ 5,355	$ 4,824
Amount transferred to receivables from contract assets	(3,232)	(4,091)	(4,041)
Additions to contract assets	3,185	4,305	4,572
Balance at end of period	5,522	5,569	5,355
Contract Liabilities
Balance at beginning of period	463,920	486,339	526,042
Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period	(147,270)	(144,776)	(143,778)
Increases due to invoicing prior to satisfaction of performance obligations	137,184	122,357	104,075
Balance at end of period	$ 453,834	$ 463,920	$ 486,339

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Remaining Performance Obligations (Details) $ in Millions	Oct. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 685.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-11-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 481.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognition period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-11-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 204.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognition period

Business Combination - Narrativ

Business Combination - Narrative (Details) $ / shares in Units, $ in Thousands	Jan. 03, 2019USD ($)$ / shares	Oct. 31, 2019	Jan. 31, 2019USD ($)
Business Acquisition [Line Items]
Fair value of stock-based awards recognized as stock-based compensation expense weighted-average period		1 year
Goodwill, acquired during period			$ 552,800
Acquired finite-lived intangible assets, estimated remaining useful life, benchmark period	7 years
Hortonworks
Business Acquisition [Line Items]
Business acquisition, consideration to be paid in cash	$ 1,202,427
Business acquisition, transaction costs	$ 22,800
Business acquisition, share price (in dollars per share) | $ / shares	$ 10.37
Fair value post share conversion	$ 1,154,230
Business acquisition, share conversion ratio	1.305
Fair value of stock-based awards recognized as stock-based compensation expense	$ 63,500
Fair value of stock-based awards recognized as stock-based compensation expense weighted-average period	1 year 6 months
Additional stock-based compensation expense recognized due to acceleration and modification of certain stock awards			13,100
Stock Options | Hortonworks
Business Acquisition [Line Items]
Fair value post share conversion	$ 4,100
Performance Restricted Stock Units | Hortonworks
Business Acquisition [Line Items]
Fair value post share conversion	900
Restricted Stock Units
Business Acquisition [Line Items]
Fair value of stock-based awards recognized as stock-based compensation expense weighted-average period		1 year 9 months 18 days
Restricted Stock Units | Hortonworks
Business Acquisition [Line Items]
Fair value post share conversion	$ 9,000
Subscription
Business Acquisition [Line Items]
Goodwill, acquired during period			525,200
Services
Business Acquisition [Line Items]
Goodwill, acquired during period			$ 27,600
Customer Relationships Intangible Asset | Hortonworks
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, estimated remaining useful life	10 years

Business Combination - Schedule

Business Combination - Schedule of Fair Value of Consideration Transferred (Details) - Hortonworks $ in Thousands	Jan. 03, 2019USD ($)shares
Business Acquisition [Line Items]
Common stock (111,304,700 shares)	$ 1,154,230
Fair value of share-based compensation awards assumed	48,197
Total	$ 1,202,427
Business acquisition, equity interest issued or issuable, number of shares | shares	111,304,700

Business Combination - Summary

Business Combination - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Details) - Hortonworks $ in Thousands	Jan. 03, 2019USD ($)
Business Acquisition [Line Items]
Cash and cash equivalents	$ 40,886
Marketable securities, current	8,103
Accounts receivable, net	165,958
Prepaid expenses and other assets	23,512
Property and equipment, net	8,091
Intangible assets	682,600
Accounts payable	(2,888)
Accrued compensation	(31,007)
Other accrued liabilities and long-term liabilities	(12,163)
Deferred revenue	(233,500)
Total net assets acquired and liabilities assumed	$ 649,592

Business Combination - Summar_2

Business Combination - Summary of Components of Identifiable Intangible Assets Acquired and Estimated Useful Lives (Details) - Hortonworks $ in Thousands	Jan. 03, 2019USD ($)
Business Acquisition [Line Items]
Fair Value	$ 682,600
Unbilled contracts
Business Acquisition [Line Items]
Fair Value	$ 18,300
Estimated Remaining Useful Life	2 years
Customer relationships
Business Acquisition [Line Items]
Fair Value	$ 661,600
Estimated Remaining Useful Life	10 years
Trade names
Business Acquisition [Line Items]
Fair Value	$ 2,700
Estimated Remaining Useful Life	1 year

Cash Equivalents and Marketab_3

Cash Equivalents and Marketable Securities - Schedule of Fair Values of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Marketable securities:
Total cash equivalents and marketable securities, amortized cost	$ 421,430	$ 426,670
Total cash equivalents and marketable securities, unrealized gains	1,181	184
Total cash equivalents and marketable securities, unrealized losses	(4)	(184)
Total cash equivalents and marketable securities, estimated fair value	422,607	426,670
Asset-backed securities
Marketable securities:
Amortized Cost	70,417	63,626
Unrealized Gains	165	16
Unrealized Losses	(3)	(57)
Estimated Fair Value	70,579	63,585
Corporate notes and obligations
Marketable securities:
Amortized Cost	196,716	140,710
Unrealized Gains	935	136
Unrealized Losses	(1)	(111)
Estimated Fair Value	197,650	140,735
Commercial paper
Marketable securities:
Amortized Cost	57,493	101,712
Unrealized Gains	12	9
Unrealized Losses	0	(1)
Estimated Fair Value	57,505	101,720
Municipal securities
Marketable securities:
Amortized Cost	4,999
Unrealized Gains	0
Unrealized Losses	0
Estimated Fair Value	4,999
Certificates of deposit
Marketable securities:
Amortized Cost	17,894	46,551
Unrealized Gains	29	21
Unrealized Losses	0	(1)
Estimated Fair Value	17,923	46,571
U.S. treasury securities
Marketable securities:
Amortized Cost	36,981	21,949
Unrealized Gains	40	0
Unrealized Losses	0	(14)
Estimated Fair Value	37,021	21,935
Foreign government obligations
Marketable securities:
Amortized Cost		4,000
Unrealized Gains		0
Unrealized Losses		0
Estimated Fair Value		4,000
Money market funds
Cash equivalents:
Amortized Cost	36,930	29,966
Estimated Fair Value	$ 36,930	29,966
Commercial paper
Cash equivalents:
Amortized Cost		9,157
Unrealized Gains		1
Estimated Fair Value		9,158
Certificates of deposit
Cash equivalents:
Amortized Cost		3,999
Unrealized Gains		1
Estimated Fair Value		4,000
Reverse repurchase agreements
Cash equivalents:
Amortized Cost		5,000
Estimated Fair Value		$ 5,000

Cash Equivalents and Marketab_4

Cash Equivalents and Marketable Securities - Schedule of Contractual Maturities of Investments in Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Cash and Cash Equivalents [Abstract]
Due within one year, amortized cost	$ 331,696	$ 380,461
Due within one year, estimated fair value	332,293	380,335
Due after one year through five years, amortized cost	89,734	46,209
Due after one year through five years, estimated fair value	90,314	46,335
Total investments in marketable securities, amortized cost	421,430	426,670
Total investments in marketable securities, estimated fair value	$ 422,607	$ 426,670

Fair Value Measurement - Sched

Fair Value Measurement - Schedule of Financial Assets According to Fair Value Hierarchy, Measured at Fair Value (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 70,579	$ 63,585
Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	197,650	140,735
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	4,999
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	17,923	46,571
U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	37,021	21,935
Foreign government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		4,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	422,607	426,670
Fair Value, Measurements, Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	70,579	63,585
Fair Value, Measurements, Recurring | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	197,650	140,735
Fair Value, Measurements, Recurring | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	57,505	101,720
Fair Value, Measurements, Recurring | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	4,999
Fair Value, Measurements, Recurring | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	17,923	46,571
Fair Value, Measurements, Recurring | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	37,021	21,935
Fair Value, Measurements, Recurring | Foreign government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		4,000
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	36,930	44,916
Fair Value, Measurements, Recurring | Level 1 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring | Level 1 | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring | Level 1 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring | Level 1 | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0
Fair Value, Measurements, Recurring | Level 1 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	14,950
Fair Value, Measurements, Recurring | Level 1 | Foreign government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial assets	385,677	381,754
Fair Value, Measurements, Recurring | Level 2 | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	70,579	63,585
Fair Value, Measurements, Recurring | Level 2 | Corporate notes and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	197,650	140,735
Fair Value, Measurements, Recurring | Level 2 | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	57,505	101,720
Fair Value, Measurements, Recurring | Level 2 | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	4,999
Fair Value, Measurements, Recurring | Level 2 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	17,923	46,571
Fair Value, Measurements, Recurring | Level 2 | U.S. treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	37,021	6,985
Fair Value, Measurements, Recurring | Level 2 | Foreign government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities		4,000
Fair Value, Measurements, Recurring | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	36,930	29,966
Fair Value, Measurements, Recurring | Money market funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	36,930	29,966
Fair Value, Measurements, Recurring | Money market funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 0	0
Fair Value, Measurements, Recurring | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		9,158
Fair Value, Measurements, Recurring | Commercial paper | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Fair Value, Measurements, Recurring | Commercial paper | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		9,158
Fair Value, Measurements, Recurring | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		4,000
Fair Value, Measurements, Recurring | Certificates of deposit | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Fair Value, Measurements, Recurring | Certificates of deposit | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		4,000
Fair Value, Measurements, Recurring | Reverse repurchase agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		5,000
Fair Value, Measurements, Recurring | Reverse repurchase agreements | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Fair Value, Measurements, Recurring | Reverse repurchase agreements | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		$ 5,000

Balance Sheet Components - Sch

Balance Sheet Components - Schedule of Cost and Accumulated Depreciation and Amortization of Property and Equipment (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 59,983	$ 54,482
Less: accumulated depreciation and amortization	(35,459)	(26,863)
Property and equipment, net	24,524	27,619
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	22,552	18,259
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	12,693	11,907
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 24,738	$ 24,316

Balance Sheet Components - Narr

Balance Sheet Components - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Depreciation expense	$ 2.9	$ 2	$ 9	$ 5.8
Amortization expense of intangible assets	$ 20	$ 0.7	$ 60.1	$ 2

Balance Sheet Components - Sche

Balance Sheet Components - Schedule of Intangible Assets (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	$ 707,317	$ 701,383
Accumulated Amortization	(82,180)	(22,057)
Net Book Value	$ 625,137	$ 679,326
Weighted Average Remaining Useful Life (in years)	8 years 10 months 24 days	9 years 7 months 6 days
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	$ 17,570	$ 11,986
Accumulated Amortization	(10,754)	(9,258)
Net Book Value	$ 6,816	$ 2,728
Weighted Average Remaining Useful Life (in years)	3 months 18 days	1 year 10 months 24 days
Customer relationships and other acquired intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	$ 671,447	$ 671,097
Accumulated Amortization	(63,801)	(12,036)
Net Book Value	$ 607,646	$ 659,061
Weighted Average Remaining Useful Life (in years)	9 years 2 months 12 days	9 years 10 months 24 days
Unbilled contracts
Finite-Lived Intangible Assets [Line Items]
Gross Fair Value	$ 18,300	$ 18,300
Accumulated Amortization	(7,625)	(763)
Net Book Value	$ 10,675	$ 17,537
Weighted Average Remaining Useful Life (in years)	1 year 2 months 12 days	1 year 10 months 24 days

Balance Sheet Components - Sc_2

Balance Sheet Components - Schedule of Expected Future Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Remaining three months of fiscal 2020	$ 19,902
fiscal 2021	76,696
fiscal 2022	67,828
fiscal 2023	67,445
fiscal 2024	67,328
fiscal 2025 and thereafter	325,938
Net Book Value	$ 625,137	$ 679,326

Balance Sheet Components - Sc_3

Balance Sheet Components - Schedule of Accrued Compensation and Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2019	Jan. 31, 2019
Accrued Compensation
Accrued salaries, benefits and commissions	$ 17,849	$ 20,563
Accrued bonuses	17,484	14,832
Accrued compensation related taxes and other	13,053	11,797
Employee stock purchase plan withholdings	7,200	1,902
Other	2,966	4,496
Total accrued compensation	58,552	53,590
Accrued Liabilities and Other Liabilities [Abstract]
Accrued professional costs	8,816	6,500
Accrued taxes	4,627	3,731
Accrued travel	2,288	2,751
Other	9,850	11,566
Total other accrued liabilities	$ 25,581	$ 24,548

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2019
Leases [Abstract]
Operating lease cost	$ 10,999	$ 33,897
Short-term lease cost	600	1,799
Sublease income	(3,893)	(11,816)
Net lease cost	$ 7,706	$ 23,880

Leases - Lease Term and Discoun

Leases - Lease Term and Discount Rate Information (Details)	Oct. 31, 2019
Leases [Abstract]
Weighted Average Remaining Lease Term (years)	7 years 1 month 6 days
Weighted Average Discount Rate	6.00%

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Oct. 31, 2019USD ($)
Operating Leases, After Adoption of 842
Remaining three months of fiscal 2020	$ 8,167
fiscal 2021	43,825
fiscal 2022	39,027
fiscal 2023	35,291
fiscal 2024	35,906
fiscal 2025 and thereafter	117,293
Total lease payments	279,509
Less imputed interest	(52,818)
Present value of lease liabilities	$ 226,691

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	Oct. 31, 2019USD ($)
Leases [Abstract]
Expected sublease rental proceeds next five years	$ 35.4

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Letters of credit	$ 19.8	$ 20

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details)	Feb. 01, 2019shares	Mar. 31, 2017annual_share_increaseshares	Oct. 31, 2019USD ($)planshares	Oct. 31, 2018USD ($)	Jan. 31, 2019shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans | plan			2
Common stock reserved and available for future issuance (in shares) | shares			14,502,380		19,117,696
Intrinsic value of options exercised | $			$ 21,200,000	$ 26,300,000
Tax benefit from exercise of stock options | $			0
Unamortized stock-based compensation expense | $			$ 500,000
Average remaining vesting period			1 year
Employee stock purchase plan withholdings | $			$ 7,200,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period			10 years
Employee Stock Option | After One Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Award vesting percentage			25.00%
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Average remaining vesting period			1 year 9 months 18 days
Unamortized stock-based compensation expense RSUs | $			$ 285,800,000
Restricted Stock Units | After One Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Restricted Stock Units | Quarterly Basis on Years Two Through Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Equity Incentive Plan 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restriction on increase to shares outstanding percentage			5.00%
Increase in shares reserved for grant (in shares) | shares	13,440,931
Common stock reserved and available for future issuance (in shares) | shares			73,741,909
Employee Stock Purchase Plan 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restriction on increase to shares outstanding percentage			1.00%
Offering period		6 months
Reserved for issuance under plans (in shares) | shares		3,000,000
Number of annual automatic share increases | annual_share_increase		10
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) | shares			4,666,446
Minimum | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Minimum | Employee Stock Option | Quarterly Basis on Years Two Through Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			2 years
Minimum | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Maximum | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Maximum | Employee Stock Option | Quarterly Basis on Years Two Through Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Maximum | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years

Stockholders' Equity - Schedul

Stockholders' Equity - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2019	Jan. 31, 2019
Stock Options Outstanding
Balance at beginning of period (in shares)	19,117,696
Exercised (in shares)	(3,775,342)
Canceled (in shares)	(839,974)
Balance at end of period (in shares)	14,502,380	19,117,696
Weighted- Average Exercise Price
Balance at beginning of period (in dollars per share)	$ 5.83
Exercised (in dollars per share)	2.85
Canceled (in dollars per share)	15.42
Balance at end of period (in dollars per share)	$ 6.05	$ 5.83
Additional Information
Weighted-Average Remaining Contractual Term (Years)	2 years 3 months 18 days	4 years 3 months 18 days
Aggregate Intrinsic Value	$ 55,442	$ 154,431

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Restricted Stock Activity (Details) - Restricted Stock Units	9 Months Ended
	Oct. 31, 2019$ / sharesshares
Number of Restricted Stock Units
Balance at beginning of period (in shares) | shares	35,058,103
Granted (in shares) | shares	22,311,693
Canceled (in shares) | shares	(7,481,304)
Vested and converted to shares (in shares) | shares	(16,558,127)
Balance at end of period (in shares) | shares	33,330,365
Weighted-Average Grant Date Fair Value Per Share
Balance at beginning of period (in dollars per share) | $ / shares	$ 13.25
Granted (in dollars per share) | $ / shares	7.60
Canceled (in dollars per share) | $ / shares	12.84
Vested and converted to shares (in dollars per share) | $ / shares	11.86
Balance at end of period (in dollars per share) | $ / shares	$ 10.45

Income Taxes - Narrative (Deta

Income Taxes - Narrative (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]
Tax provision	$ 2,365	$ 1,498	[1]	$ 6,472	$ 3,595	[1]
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Related Party Transactions - N

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenue from Affiliated Companies
Related Party Transaction [Line Items]
Revenue from related party	$ 2	$ 4.3	$ 14.2	$ 14.3
Affiliated Entity | Other Related Parties | Accounts Receivable from Affiliated Companies
Related Party Transaction [Line Items]
Accounts receivable related party	$ 2.5		$ 2.5

Segment Information - Schedule

Segment Information - Schedule of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Segment Reporting Information [Line Items]
Total revenue	$ 198,292	$ 118,988	$ 582,471	$ 335,426
Total segment contribution margin	152,351	93,940	440,228	256,433
Subscription
Segment Reporting Information [Line Items]
Total revenue	166,932	100,757	485,872	283,318
Total segment contribution margin	143,775	89,399	417,908	247,480
Services
Segment Reporting Information [Line Items]
Total revenue	31,360	18,231	96,599	52,108
Total segment contribution margin	$ 8,576	$ 4,541	$ 22,320	$ 8,953

Segment Information - Reconcili

Segment Information - Reconciliation of Segment Financial Information to Loss from Operations (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Oct. 31, 2019	Oct. 31, 2018		Oct. 31, 2019	Oct. 31, 2018
Segment Reporting Information [Line Items]
Segment contribution margin		$ 152,351	$ 93,940		$ 440,228	$ 256,433
Amortization of acquired intangible assets		(20,000)	(700)		(60,100)	(2,000)
Corporate costs, such as research and development, corporate general and administrative and other	[1],[2]	(223,131)	(114,685)	[3]	(681,797)	(346,766)	[3]
Loss from operations		(82,467)	(25,673)	[3]	(275,317)	(106,799)	[3]
Operating Segments
Segment Reporting Information [Line Items]
Segment contribution margin		152,351	93,940		440,228	256,433
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets		(20,025)	(657)		(60,122)	(1,971)
Stock-based compensation expense		(54,214)	(21,890)		(164,818)	(67,731)
Corporate costs, such as research and development, corporate general and administrative and other		$ (160,579)	$ (97,066)		$ (490,605)	$ (293,530)
[1]	Amounts include amortization of acquired intangible assets as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue – subscription $ 2,761 $ 622 $ 8,358 $ 1,866 Sales and marketing 17,264 35 51,764 105
[2]	Amounts include stock‑based compensation expense as follows (in thousands): Three Months Ended October 31, Nine Months Ended October 31, 2019 2018 2019 2018 Cost of revenue – subscription $ 4,306 $ 2,016 $ 12,314 $ 7,060 Cost of revenue – services 4,620 2,290 13,076 7,540 Research and development 19,697 7,805 55,991 26,002 Sales and marketing 17,400 5,504 46,199 14,281 General and administrative 8,191 4,275 37,238 12,848
[3]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Segment Information - Narrative

Segment Information - Narrative (Details) - Non-US - Geographic Concentration	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Total Revenue
Concentration Risk [Line Items]
Concentration risk percentage	39.00%	35.00%	38.00%	34.00%
Total Assets
Concentration Risk [Line Items]
Concentration risk percentage			5.00%		4.00%

Net Loss Per Share - Schedule

Net Loss Per Share - Schedule of the Calculation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (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	[4]
Numerator:
Net loss	$ (82,122)	$ (25,857)	[1],[2]	$ (272,295)	$ (107,128)	[1],[3]
Denominator:
Weighted-average shares used in computing net loss, per share basic and diluted (in shares)	283,267	152,245	[4]	277,260	149,507
Net loss per share, basic and diluted (in shares)	$ (0.29)	$ (0.17)	[4]	$ (0.98)	$ (0.72)
[1]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[2]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[3]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.
[4]	As adjusted to reflect the impact of the full retrospective adoption of Topic 606. See Note 2 for a summary of adjustments.

Net Loss Per Share - Schedul_2

Net Loss Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Thousands	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	50,452	33,786
Stock options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	14,502	15,684
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	33,330	17,582
Shares issuable pursuant to the ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	2,620	520