v3.25.4
Overview and Basis of Presentation (Details)
$ / shares in Units, € in Millions, £ in Millions, shares in Millions, $ in Millions
12 Months Ended
Aug. 01, 2025
Jun. 25, 2025
Dec. 09, 2024
shares
May 16, 2024
shares
Apr. 08, 2024
USD ($)
Apr. 08, 2024
GBP (£)
Oct. 31, 2023
USD ($)
Oct. 31, 2023
EUR (€)
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
Other Ownership Interests [Line Items]                      
Common stock, par value (in dollars per share) | $ / shares                 $ 0.01 $ 0.01  
Net (gain) loss on divestitures                 $ 0 $ 245 $ 676
Net investment income                 $ 13,124 12,228 11,078
Revision of Prior Period, Adjustment                      
Other Ownership Interests [Line Items]                      
Net investment income                   77  
Disposal Group, Disposed of by Sale, Not Discontinued Operations | AIG Life Limited                      
Other Ownership Interests [Line Items]                      
Proceeds from sale of business         $ 569 £ 453          
Net (gain) loss on divestitures                   $ 246  
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Laya Healthcare Limited                      
Other Ownership Interests [Line Items]                      
Proceeds from sale of business             $ 731 € 691      
Net (gain) loss on divestitures                     $ 652
CSLR Modco Agreement                      
Other Ownership Interests [Line Items]                      
Reinsurance, reinsured risk (as a percent) 100.00% 100.00%                  
Nippon Life Insurance Company | Corebridge Financial                      
Other Ownership Interests [Line Items]                      
Ownership percentage (as a percent)                 24.60%    
AIG | Corebridge Financial                      
Other Ownership Interests [Line Items]                      
Ownership percentage (as a percent)                 10.10%    
AIG | Corebridge Financial | Stock Purchase Agreement                      
Other Ownership Interests [Line Items]                      
Number of shares to be sold (in shares) | shares     122 122              
Common stock ownership interest (as a percent)     21.60%                
Argon Holdco LLC | Corebridge Financial                      
Other Ownership Interests [Line Items]                      
Ownership percentage (as a percent)                 12.50%