v3.25.4
Statutory Requirements - Schedule of Statutory Capital and Surplus and Net Income (Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
ALRe      
Statutory Accounting Practices [Line Items]      
Statutory capital & surplus $ 13,702 $ 17,623  
Statutory net income (loss) 612 3,140 $ 832
ALRe | Bermuda Jurisdiction      
Statutory Accounting Practices [Line Items]      
Increase (decrease) to capital and surplus due to permitted practices 1,982    
Increase (decrease) to statutory net income due to permitted practices (663)    
Maximum distribution permitted to remit without the need for prior approval 9,842 10,112  
AARe      
Statutory Accounting Practices [Line Items]      
Statutory capital & surplus 23,713 21,049  
Statutory net income (loss) 2,774 2,910 408
AARe | Bermuda Jurisdiction      
Statutory Accounting Practices [Line Items]      
Increase (decrease) to capital and surplus due to permitted practices 808    
Increase (decrease) to statutory net income due to permitted practices (644)    
Maximum distribution permitted to remit without the need for prior approval 12,888 10,207  
ACRA 1A      
Statutory Accounting Practices [Line Items]      
Statutory capital & surplus 3,822 4,521  
Statutory net income (loss) (247) 841 297
ACRA 1A | Bermuda Jurisdiction      
Statutory Accounting Practices [Line Items]      
Increase (decrease) to capital and surplus due to permitted practices 2,655    
Increase (decrease) to statutory net income due to permitted practices (1,752)    
Maximum distribution permitted to remit without the need for prior approval 614 1,044  
ACRA 2A      
Statutory Accounting Practices [Line Items]      
Statutory capital & surplus 6,585 4,569  
Statutory net income (loss) 1,090 877 (759)
ACRA 2A | Bermuda Jurisdiction      
Statutory Accounting Practices [Line Items]      
Increase (decrease) to capital and surplus due to permitted practices 54    
Increase (decrease) to statutory net income due to permitted practices 62    
Maximum distribution permitted to remit without the need for prior approval 2,174 877  
AAIA      
Statutory Accounting Practices [Line Items]      
Statutory capital & surplus 4,122 3,899  
Statutory net income (loss) 1,092 949 (79)
AANY      
Statutory Accounting Practices [Line Items]      
Statutory capital & surplus 394 318  
Statutory net income (loss) $ 25 $ 25 $ (3)