| Cover Page - USD ($) $ in Millions | 12 Months Ended | ||
| Jan. 31, 2020 | Sep. 30, 2020 | Jul. 31, 2019 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Period End Date | Jan. 31, 2020 | ||
| 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 | 5470 Great America Parkway | ||
| Entity Address, City or Town | Santa Clara | ||
| Entity Address, State or Province | CA | ||
| Entity Address, Postal Zip Code | 95054 | ||
| City Area Code | 650 | ||
| Local Phone Number | 362-0488 | ||
| Title of 12(b) Security | Common Stock, $0.00005 par value per share | ||
| Trading Symbol | CLDR | ||
| Security Exchange Name | NYSE | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 1,400 | ||
| Entity Common Stock, Shares Outstanding (In shares) | 312,565,428 | ||
| Documents Incorporated by Reference | Information required in response to Part II and Part III of Form 10-K is hereby incorporated by reference to portions of the Registrant’s Proxy Statement for the Annual Meeting of Stockholders to be held in 2020. The Proxy Statement will be filed by the Registrant with the Securities and Exchange Commission no later than 120 days after the end of the Registrant’s fiscal year ended January 31, 2020. | ||
| Entity Central Index Key | 0001535379 | ||
| Current Fiscal Year End Date | --01-31 | ||
| Document Fiscal Year Focus | 2020 | ||
| Document Fiscal Period Focus | FY | ||
| Amendment Flag | true | ||
| Amendment Description | Cloudera, Inc. (the “Company”) is filing this Amendment No. 2 on Form 10-K/A (“Amendment No. 2”) to amend the Company’s Amendment No. 1 on Form 10-K/A (“Amendment No. 1”) that amended the Company’s Annual Report on Form 10-K for the year ended January 31, 2020, which was initially filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 27, 2020 (the “Original 2020 Form 10-K”). The purpose of this Amendment No. 2 is to file updated certifications from the Company’s principal executive officer and principal financial officer pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) that include paragraphs 3, 4 and 5, which were not included in the certifications filed with Amendment No. 1, since Amendment No. 1 amended disclosure with respect to Item 308 of Regulation S-K. Because no financial statements have been included in this Amendment No. 2, certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 have been omitted. Except as described above, this Amendment No. 2 does not amend, modify, or otherwise update any other information in the Original 2020 Form 10-K and does not reflect events occurring after the filing of the Original 2020 Form 10-K. Accordingly, this Amendment No. 2 should be read in conjunction with the Original 2020 Form 10-K and the Company’s other filings with the SEC. |
