v3.25.4
Deferred Policy Acquisition Costs - Rollforward of deferred policy acquisition costs (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disposal Group, Held-for-Sale, Not Discontinued Operations | AIG Life U.K.      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Deferred policy acquisition costs held for sale     $ 740
Institutional Markets      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Reclassified to Assets held-for-sale     0
Corporate & Other      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Reclassified to Assets held-for-sale     0
Long-Duration Insurance Contracts      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year $ 10,281 $ 9,994 10,472
Capitalization 1,381 1,377 1,260
Amortization expense (1,048) (1,056) (1,034)
Other adjustments and Other, including foreign exchange (1,739) (7) 36
Reclassified to Assets held-for-sale     (740)
Dispositions   (27)  
Balance, end of year 8,875 10,281 9,994
Long-Duration Insurance Contracts | Individual Retirement      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 3,020 2,656 2,409
Capitalization 833 768 602
Amortization expense (475) (404) (355)
Other adjustments and Other, including foreign exchange 0 0 0
Reclassified to Assets held-for-sale     0
Dispositions   0  
Balance, end of year 3,378 3,020 2,656
Long-Duration Insurance Contracts | Group Retirement      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 1,049 1,055 1,060
Capitalization 95 78 77
Amortization expense (91) (84) (82)
Other adjustments and Other, including foreign exchange 0 0 0
Reclassified to Assets held-for-sale     0
Dispositions   0  
Balance, end of year 1,053 1,049 1,055
Long-Duration Insurance Contracts | Life Insurance      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 4,127 4,092 4,718
Capitalization 368 411 450
Amortization expense (333) (342) (372)
Other adjustments and Other, including foreign exchange 0 (7) 36
Reclassified to Assets held-for-sale     (740)
Dispositions   (27)  
Balance, end of year 4,162 4,127 4,092
Long-Duration Insurance Contracts | Institutional Markets      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 95 70 51
Capitalization 40 38 28
Amortization expense (17) (13) (9)
Other adjustments and Other, including foreign exchange 0 0 0
Dispositions   0  
Balance, end of year 118 95 70
Long-Duration Insurance Contracts | Corporate & Other      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 1,990 2,121 2,234
Capitalization 45 82 103
Amortization expense (132) (213) (216)
Other adjustments and Other, including foreign exchange (1,739) 0 0
Dispositions   0  
Balance, end of year 164 1,990 2,121
Value Of Business Acquired      
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]      
Balance, beginning of year 12 17  
Balance, end of year $ 10 $ 12 $ 17