| Cover page | Apr. 22, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Apr. 22, 2024 |
| Entity Registrant Name | Clearwater Analytics Holdings, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40838 |
| Entity Tax Identification Number | 87-1043711 |
| Entity Address, Address Line One | 777 W. Main Street |
| Entity Address, Address Line Two | Suite 900 |
| Entity Address, City or Town | Boise |
| Entity Address, State or Province | ID |
| Entity Address, Postal Zip Code | 83702 |
| City Area Code | 208 |
| Local Phone Number | 433-1200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A common stock, par value $0.001 per share |
| Trading Symbol | CWAN |
| Security Exchange Name | NYSE |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001866368 |
| Amendment Flag | false |
