v3.26.3
Derivative Financial Instruments - Schedule of Change in Fair Value of Derivative Instruments (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative [Line Items]        
Recognized gains (losses), net for derivatives $ 186 $ 220 $ 598 $ 77
Recognized gains (losses), net for hedged item $ 0 $ 0 $ 1 $ 3
Derivative, Gain (Loss), Statement of Income or Comprehensive Income Flag Benefits and other changes in policy reserves Benefits and other changes in policy reserves Benefits and other changes in policy reserves Benefits and other changes in policy reserves
Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives $ (780) $ 170 $ (576) $ 313
Recognized gains (losses), net for hedged item 26 1 52 (12)
Derivatives designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 (1) (3)
Recognized gains (losses), net for hedged item 0 0 1 3
Derivatives designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (27) (1) (55) 11
Recognized gains (losses), net for hedged item 26 1 52 (12)
Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 186 220 599 80
Recognized gains (losses), net for hedged item 0 0 0 0
Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (753) 171 (521) 302
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency swaps, included in Accounts payable and accrued liabilities | Derivatives designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency swaps, included in Accounts payable and accrued liabilities | Derivatives designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (27) (1) (55) 11
Recognized gains (losses), net for hedged item 26 1 52 (12)
Foreign currency swaps, included in Accounts payable and accrued liabilities | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (223) (5) (282) 62
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency swaps, included in Accounts payable and accrued liabilities | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency swaps | Derivatives designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 (1) (3)
Recognized gains (losses), net for hedged item 0 0 1 3
Foreign currency swaps | Derivatives designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency swaps | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (11) 0 2 (4)
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency swaps | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Equity options | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (116) 269 164 161
Recognized gains (losses), net for hedged item 0 0 0 0
Equity options | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Futures contracts | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 2 12 (3) 26
Recognized gains (losses), net for hedged item 0 0 0 0
Futures contracts | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency forwards | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 1 1 4 (10)
Recognized gains (losses), net for hedged item 0 0 0 0
Foreign currency forwards | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Other embedded derivatives | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 3 3 7
Recognized gains (losses), net for hedged item 0 0 0 0
Other embedded derivatives | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Indexed annuities/IUL embedded derivatives | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item 0 0 0 0
Indexed annuities/IUL embedded derivatives | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives (753) 171 (521) 302
Recognized gains (losses), net for hedged item 0 0 0 0
Reinsurance related embedded derivatives | Derivatives not designated as hedging instruments        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 533 (60) 711 (162)
Recognized gains (losses), net for hedged item 0 0 0 0
Reinsurance related embedded derivatives | Derivatives not designated as hedging instruments | Fair Value Hedging        
Derivative [Line Items]        
Recognized gains (losses), net for derivatives 0 0 0 0
Recognized gains (losses), net for hedged item $ 0 $ 0 $ 0 $ 0