v3.25.4
Document And Entity Information
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Entity Central Index Key 0001872195
Entity Registrant Name Bullish
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2025
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2025
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-42797
Entity Incorporation, State or Country Code KY
Entity Address, Address Line One 10A Building A, 60 Nexus Way, Camana Bay
Entity Address, City or Town George Town, Grand Cayman
Entity Address, Country KY
Entity Address, Postal Zip Code KY1-9005
Title of 12(b) Security Ordinary Shares
Trading Symbol BLSH
Security Exchange Name NYSE
Entity Common Stock, Shares Outstanding 150,833,916
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 Emerging Growth Company false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Auditor Firm ID 34
Auditor Name Deloitte & Touche LLP
Auditor Location San Francisco, California
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One 10A Building A 60 Nexus Way, Camana Bay
Entity Address, City or Town George Town, Grand Cayman
Entity Address, Country KY
Entity Address, Postal Zip Code KY1-9005
Contact Personnel Name Nicholas Armstrong
City Area Code 212
Local Phone Number 309-6000