v3.23.1
Reinsurance - Summary of the composition of pool of assets (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Jan. 01, 2021
Effects of Reinsurance [Line Items]      
Bonds available for sale [1] $ 156,793 $ 198,568  
Fixed maturity securities - fair value option [1] 3,769 2,082  
Loans 45,166 39,884  
Investment real estate 1,831 2,349  
Short-term Investments [1] 4,400 5,471  
Derivative assets net, carrying value 299 684  
Fair Value 3,252 7,267  
Other assets 2,521 [1] 3,614 [1] $ 3,824
Total assets 360,322 425,431 $ 422,435
Carrying Value      
Effects of Reinsurance [Line Items]      
Short-term Investments 3,043 4,016  
Other assets 12 7  
Private equity funds/hedge funds      
Effects of Reinsurance [Line Items]      
Private equity funds/hedge funds 8,014 7,527  
Commercial Mortgages      
Effects of Reinsurance [Line Items]      
Loans 32,993 30,528  
Policy loans      
Effects of Reinsurance [Line Items]      
Loans 1,750 1,832  
Fortitude Holdings      
Effects of Reinsurance [Line Items]      
Derivative asset, fair value of collateral 189 387  
Fortitude Holdings | Carrying Value      
Effects of Reinsurance [Line Items]      
Bonds available for sale 16,339 27,180  
Fixed maturity securities - fair value option 3,485 1,593  
Investment real estate 133 201  
Short-term Investments 69 50  
Funds withheld investment assets 25,764 34,189  
Derivative assets net, carrying value 90 81  
Other assets 731 476  
Total assets 26,585 34,746  
Fortitude Holdings | Fair Value      
Effects of Reinsurance [Line Items]      
Bonds available for sale 16,339 27,180  
Fixed maturity securities - fair value option 3,485 1,593  
Investment real estate 348 395  
Short-term Investments 69 50  
Funds withheld investment assets 25,730 34,587  
Fair Value 90 81  
Other assets 731 476  
Total 26,551 35,144  
Fortitude Holdings | Private equity funds/hedge funds | Carrying Value      
Effects of Reinsurance [Line Items]      
Private equity funds/hedge funds 1,893 1,606  
Fortitude Holdings | Private equity funds/hedge funds | Fair Value      
Effects of Reinsurance [Line Items]      
Private equity funds/hedge funds 1,893 1,606  
Fortitude Holdings | Commercial Mortgages | Carrying Value      
Effects of Reinsurance [Line Items]      
Loans 3,490 3,179  
Fortitude Holdings | Commercial Mortgages | Fair Value      
Effects of Reinsurance [Line Items]      
Mortgage and other loans receivable 3,241 3,383  
Fortitude Holdings | Policy loans | Carrying Value      
Effects of Reinsurance [Line Items]      
Loans 355 380  
Fortitude Holdings | Policy loans | Fair Value      
Effects of Reinsurance [Line Items]      
Mortgage and other loans receivable $ 355 $ 380  
[1] See Note 9 for details of balances associated with variable interest entities