v3.26.3
Reinsurance - Schedule of the composition of pool of assets (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Effects of Reinsurance [Line Items]    
Bonds available-for-sale [1] $ 182,757 $ 189,381
Fixed maturity securities - fair value option [1] 5,187 5,407
Loans 55,199 55,208
Real estate investments 971 985
Private equity funds/hedge funds 8,316 8,123
Short-term Investments [1] 4,493 5,675
Derivative assets net, carrying value 472 441
Derivative assets net, fair value 11,784 10,029
Other assets [1] 4,510 4,435
Total assets 404,070 413,547
Carrying Value    
Effects of Reinsurance [Line Items]    
Short-term Investments 2,602 4,051
Other assets 2,639 2,470
Commercial Mortgages    
Effects of Reinsurance [Line Items]    
Loans 37,768 37,009
Policy loans    
Effects of Reinsurance [Line Items]    
Loans 1,677 1,694
Fortitude Holdings    
Effects of Reinsurance [Line Items]    
Derivative asset, fair value of collateral 0 0
Derivative liability, Fair value of collateral 912 615
Fortitude Holdings | Carrying Value    
Effects of Reinsurance [Line Items]    
Bonds available-for-sale 11,307 12,739
Fixed maturity securities - fair value option 4,815 4,982
Real estate investments 89 118
Private equity funds/hedge funds 2,006 1,800
Short-term Investments 281 399
Funds withheld investment assets 21,262 23,085
Derivative assets net, carrying value 0 0
Other assets 543 667
Total assets 21,805 23,752
Fortitude Holdings | Fair Value    
Effects of Reinsurance [Line Items]    
Bonds available-for-sale 11,307 12,739
Fixed maturity securities - fair value option 4,815 4,982
Real estate investments 125 165
Private equity funds/hedge funds 2,006 1,800
Short-term Investments 281 399
Funds withheld investment assets 21,046 22,981
Derivative assets net, fair value 0 0
Other assets 543 667
Total 21,589 23,648
Fortitude Holdings | Commercial Mortgages | Carrying Value    
Effects of Reinsurance [Line Items]    
Loans 2,473 2,745
Fortitude Holdings | Commercial Mortgages | Fair Value    
Effects of Reinsurance [Line Items]    
Mortgage and other loans receivable 2,221 2,594
Fortitude Holdings | Policy loans | Carrying Value    
Effects of Reinsurance [Line Items]    
Loans 291 302
Fortitude Holdings | Policy loans | Fair Value    
Effects of Reinsurance [Line Items]    
Mortgage and other loans receivable $ 291 $ 302
[1] See Note 8 for details of balances associated with variable interest entities