Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2025	Mar. 02, 2026	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-K/A
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	true
Amendment Description	On February 18, 2026, Clearwater Analytics, Inc. (the “Company,” “CWAN,” “we,” or “our”) filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Original Form 10-K”). The Original Form 10-K omitted Part III, Items 10 (Directors, Executive Officers and Corporate Governance), 11 (Executive Compensation), 12 (Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters), 13 (Certain Relationships and Related Transactions and Director Independence) and 14 (Principal Accounting Fees and Services) in reliance on the General Instructions to Form 10-K, which provides that such information may be either incorporated by reference from the registrant’s definitive proxy statement or included in an amendment to Form 10-K, in either case filed with the Securities and Exchange Commission (the “SEC”) not later than 120 days after the end of the fiscal year. This Amendment No. 1 to Form 10-K (this “Amendment”) is being filed solely to amend Items 10 through 14 of the Original Form 10-K to include the information required by such Items.Except as described above, no other changes have been made to the Original Form 10-K. The Original Form 10-K continues to speak as of the date of the Original Form 10-K, and we have not updated the disclosures contained therein to reflect any events which occurred at a date subsequent to the filing of the Original Form 10-K other than as expressly indicated in this Amendment. Accordingly, this Amendment should be read in conjunction with our Original Form 10-K and with our filings with the SEC subsequent to the filing of our Original Form 10-K.Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), this Amendment also contains certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, which are attached hereto. Because no financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. Terms used but not defined herein are as defined in the Original Form 10-K.
Class A Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		296,510,079
Class B Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,113,136

Clearwater Analytics Holdings, Inc. 10-K/A