v3.25.4
SCHEDULE II. CONDENSED FINANCIAL INFORMATION OF REGISTRANT - Balance Sheets Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Condensed Financial Statements, Captions [Line Items]    
Fixed maturity investments trading, amortized cost $ 24,658,351 $ 23,750,540
Short-term investments, amortized cost $ 4,760,027 $ 4,532,166
Preference shares, par value (in dollars per share) $ 1.00 $ 1.00
Preference shares, shares issued (in shares) 30,000 30,000
Preference shares, shares outstanding (in shares) 30,000 30,000
Common shares, par value (in dollars per share) $ 1.00 $ 1.00
Common shares, shares issued (in shares) 43,961,539 50,180,987
Common shares, shares outstanding (in shares) 43,961,539 50,180,987
Parent Company    
Condensed Financial Statements, Captions [Line Items]    
Fixed maturity investments trading, amortized cost $ 47,527 $ 153,742
Short-term investments, amortized cost $ 102,772 $ 131,232
Preference shares, par value (in dollars per share) $ 1.00 $ 1.00
Preference shares, shares issued (in shares) 30,000 30,000
Preference shares, shares outstanding (in shares) 30,000 30,000
Common shares, par value (in dollars per share) $ 1.00 $ 1.00
Common shares, shares issued (in shares) 43,961,539 50,180,987
Common shares, shares outstanding (in shares) 43,961,539 50,180,987