v3.23.1
Fair Value Measurements - Net realized and unrealized gains and losses included in income related to Level 3 assets and liabilities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets $ 612 $ 1,110  
Net realized gains (losses), liabilities 7,023 (1,269)  
Loss on extinguishment of debt 0 219 $ 10
Interest expense on debt   34  
Policyholder contract deposits(b)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 1,107 (476)  
Policyholder contract deposits(b) | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Policyholder contract deposits(b) | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Policyholder contract deposits(b) | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 1,107 (476)  
Policyholder contract deposits(b) | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Policyholder contract deposits(b) | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Derivative liabilities, net      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities (432) 73  
Derivative liabilities, net | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 61 59  
Derivative liabilities, net | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Derivative liabilities, net | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities (577) 30  
Derivative liabilities, net | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Derivative liabilities, net | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 84 (16)  
Fortitude Re funds withheld payable      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 6,348 (687)  
Fortitude Re funds withheld payable | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Fortitude Re funds withheld payable | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Fortitude Re funds withheld payable | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 6,348 (687)  
Fortitude Re funds withheld payable | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Fortitude Re funds withheld payable | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Market risk benefit liabilities, net      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities (2,344) (2,264)  
Market risk benefit liabilities, net | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Market risk benefit liabilities, net | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Market risk benefit liabilities, net | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Market risk benefit liabilities, net | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Market risk benefit liabilities, net | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 2,344 2,264  
Debt of consolidated investment entities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 179  
Loss on extinguishment of debt   145  
Debt of consolidated investment entities | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Debt of consolidated investment entities | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Debt of consolidated investment entities | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Debt of consolidated investment entities | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 179  
Debt of consolidated investment entities | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), liabilities 0 0  
Bonds available for sale      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 449 461  
Bonds available for sale | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Bonds available for sale | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 516 472  
Bonds available for sale | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets (67) (11)  
Bonds available for sale | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Bonds available for sale | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other bond securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets (149) (3)  
Other bond securities | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other bond securities | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets (149) (3)  
Other bond securities | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other bond securities | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other bond securities | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Equity securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets (1) 11  
Equity securities | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Equity securities | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets (1) 11  
Equity securities | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Equity securities | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Equity securities | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other Invested Assets      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 313 641  
Other Invested Assets | Policy Fees      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other Invested Assets | Net Investment Income      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 321 630  
Other Invested Assets | Net Realized and Unrealized Gains (Losses)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets (8) 11  
Other Invested Assets | Interest Expense      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets 0 0  
Other Invested Assets | Change in the Fair Value of Market Risk Benefits      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net realized gains (losses), assets $ 0 $ 0