v3.25.4
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Feb. 13, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-40838    
Entity Registrant Name Clearwater Analytics Holdings, Inc.    
Entity Incorporation, State or Country Code DE    
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    
Title of 12(b) Security Class A common stock, par value $0.001 per share    
Trading Symbol CWAN    
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    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 6,253,649,261
Entity Central Index Key 0001866368    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Class A Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   294,353,077  
Class B Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   1,113,136