Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Dec. 31, 2025	Mar. 05, 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
Registrant Name	CIRCLE INTERNET GROUP, INC.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-42671
Entity Tax Identification Number	99-2840247
Entity Address, Address Line One	One World Trade Center
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10007
City Area Code	332
Local Phone Number	334-0660
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	CRCL
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 37.6
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive proxy statement for its 2026 Annual Meeting of Stockholders, or Proxy Statement, filed pursuant to Regulation 14A with the Securities and Exchange Commission on April 1, 2026, are incorporated by reference into Part III of this Annual Report on Form 10-K.
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Central Index Key	0001876042
Class A common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		228,100,955
Class B common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		18,714,651
Common Class C
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0