| Document and Entity Information | Aug. 03, 2022 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001699838 |
| Document Type | 8-K |
| Document Period End Date | Aug. 03, 2022 |
| Entity Registrant Name | CONFLUENT, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40526 |
| 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 |
| Security 12b Title | Class A Common Stock, par value $0.00001 per share |
| Trading Symbol | CFLT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
