v3.26.1
Schedule II - Condensed Financial Information of Registrant Balance Sheets (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jan. 01, 2025
Nov. 29, 2024
Aug. 13, 2019
Sep. 20, 2016
May 02, 2013
Dec. 31, 2025
Dec. 31, 2024
May 01, 2025
Dec. 31, 2023
Dec. 31, 2022
ASSETS                    
Fair Market Value           $ 1,162,000 $ 1,488,700      
Cash and Cash Equivalent [1]           1,658,800 914,200      
Right-of-use operating lease assets           43,400 53,500      
Other assets           360,400 590,800      
Total assets           16,309,600 15,748,500      
LIABILITIES                    
Accrued expenses and other payables [2]           317,100 237,200      
Short-Term Debt           296,800 300,000      
Operating lease liabilities           64,700 75,600      
Total liabilities           12,684,500 12,376,600      
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]                    
Ordinary shares (7) [3]           92 91      
Preference shares, value           699,900 970,500      
Additional paid in capital [3]           803,400 761,700      
Retained earnings           2,320,000 2,029,700      
Total accumulated other comprehensive (loss)           (198,300) (390,100)   $ (400,300)  
Total shareholders’ equity           3,625,100 3,371,900      
Total liabilities and shareholders’ equity           $ 16,309,600 $ 15,748,500      
Ordinary shares, issued           91,838,366 90,833,333      
Ordinary shares, par value           $ 0.001 $ 0.001 $ 0.001    
Preference shares, par value           $ 0.0015144558        
5.950% Preference Shares (AHL PRC)                    
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]                    
Preference shares, issued         11,000,000,000,000 0 11,000,000      
Preference shares, rate 5.95% 5.95%     5.95% 5.95% 5.95%      
Preference shares, par value           $ 0.0015144558 $ 0.0015144558      
5.625% Preference Shares (AHL PRD)                    
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]                    
Preference shares, issued       10,000,000   10,000,000 10,000,000      
Preference shares, rate       5.625%   5.625%        
Preference shares, par value           $ 0.0015144558 $ 0.0015144558      
5.625% Preference Shares (AHL PRE)                    
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]                    
Preference shares, issued     10,000,000     10,000,000 10,000,000      
Preference shares, rate     5.625%     5.625%        
Preference shares, par value           $ 0.0015144558 $ 0.0015144558      
Parent Company                    
ASSETS                    
Fair Market Value           $ 48,400 $ 44,300      
Cash and Cash Equivalent           325,700 43,500   $ 43,500 $ 44,400
Investments in subsidiaries (1)           3,505,000 3,361,300      
Other Receivables           0 275,000      
Other recievables due from affiliates           7,400 20,600      
Right-of-use operating lease assets           400 1,000      
Other assets           77,600 44,700      
Total assets           3,964,500 3,790,400      
LIABILITIES                    
Accrued expenses and other payables           37,200 20,700      
Other Liabilities           5,000 96,900      
Long-term debt           296,800 300,000      
Operating lease liabilities           400 900      
Total liabilities           339,400 418,500      
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]                    
Ordinary shares (7)           100 600      
Preference shares, value           700,100 970,500      
Additional paid in capital           803,400 761,200      
Retained earnings           2,319,800 2,029,700      
Unrealized (loss)/gains on investments           (61,300) (198,200)      
(Loss)/gain on derivatives           (200) (5,300)      
Gains on foreign currency translation (start of period) $ (186,600)         (186,600)        
Gains on foreign currency translation (end of period)           (136,800) (186,600)      
Total accumulated other comprehensive (loss)           (198,300) (390,100)      
Total liabilities and shareholders’ equity           $ 3,964,500 $ 3,790,400      
[1] Cash and cash equivalents includes restricted cash of $130.6 million (2024 — $181.9 million) which are held in trusts.
[2] Includes amounts due to related parties of $2.0 million for investment management fees (2024 — $4.0 million), and $Nil for management consulting fees (2024 — $1.3 million).
[3] Ordinary shares and additional paid-in capital have been retroactively adjusted to reflect the Ordinary Share Exchange, for all periods presented. Refer to Note 12, “Capital Structure” for further details.