v3.25.4
Document and Entity Information
 12 Months Ended
Dec. 31, 2025
shares
Document Information  
Document Type 40-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2025
Entity File Number 001-31556
Entity Registrant Name FAIRFAX FINANCIAL HOLDINGS LTD/ CAN
Entity Incorporation, State or Country Code Z4
Entity Primary SIC Number 6331
Entity Tax Identification Number 00-0000000
Entity Address, Address Line One 95 Wellington Street West
Entity Address, Address Line Two Suite 800
Entity Address, City or Town Toronto
Entity Address, State or Province ON
Entity Address, Country CA
Entity Address, Postal Zip Code M5J 2N7
City Area Code 416
Local Phone Number 367-4941
Annual Information Form true
Audited Annual Financial Statements true
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag true
Document Financial Statement Error Correction [Flag] false
Entity Central Index Key 0000915191
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Amendment Flag false
Auditor Name PricewaterhouseCoopers LLP
Auditor Location Toronto, Canada
Auditor Firm ID 271
Fairfax subordinate voting shares  
Document Information  
Entity Common Stock, Shares Outstanding 20,107,316
Multiple voting shares  
Document Information  
Entity Common Stock, Shares Outstanding 1,548,000
Business Contact  
Document Information  
Contact Personnel Name Fairfax (US) Inc.
Entity Address, Address Line One 401 East Corporate Drive
Entity Address, Address Line Two Suite 200
Entity Address, City or Town Lewisville
Entity Address, State or Province TX
Entity Address, Postal Zip Code 75057
City Area Code 972
Local Phone Number 318-6100