| Document and Entity Information | Aug. 05, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | On August 5, 2021, Confluent, Inc. (the “Company”) furnished a Current Report on Form 8-K (the “Original 8-K”) that included a press release announcing the Company’s financial results for the quarter ended June 30, 2021. This Current Report on Form 8-K/A amends the Original 8-K solely to correct the amounts shown for Non-GAAP net loss per share attributable to common stockholders, basic and diluted for the six months ended June 30, 2021 and June 30, 2020 that were included in the table titled “Reconciliation of GAAP Measures to Non-GAAP Measures” in the Company’s press release. |
| Entity Central Index Key | 0001699838 |
| Document Period End Date | Aug. 5, 2021 |
| Trading Symbol | CFLT |
| Entity Registrant Name | CONFLUENT, INC. |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Title of 12(b) Security | Class A Common Stock, par value $0.00001 per share |
| Entity File Number | 001-40526 |
| Security Exchange Name | NASDAQ |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 47-1824387 |
| Entity Address, Address Line One | 899 W. Evelyn Avenue |
| Entity Address, City or Town | Mountain View |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94041 |
| City Area Code | 800 |
| Local Phone Number | 439-3207 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
