v3.26.1
Derivative Financial Instruments - Schedule of Change in Fair Value of Derivative Instruments (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative    
Recognized gains (losses), net for derivatives $ 1 $ (223)
Recognized gains (losses), net for hedged item $ 1 $ 1
Derivative, Gain (Loss), Statement of Income or Comprehensive Income Flag Benefits and other changes in policy reserves Benefits and other changes in policy reserves
Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives $ (271) $ (53)
Recognized gains (losses), net for hedged item 11 (10)
Derivatives designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives (1) (1)
Recognized gains (losses), net for hedged item 1 1
Derivatives designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives (11) 9
Recognized gains (losses), net for hedged item 11 (10)
Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 2 (222)
Recognized gains (losses), net for hedged item 0 0
Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives (260) (62)
Recognized gains (losses), net for hedged item 0 0
Interest rate swaps | Derivatives designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Interest rate swaps | Derivatives designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives (11) 9
Recognized gains (losses), net for hedged item 11 (10)
Interest rate swaps | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives (28) 52
Recognized gains (losses), net for hedged item 0 0
Interest rate swaps | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Foreign currency swaps | Derivatives designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives (1) (1)
Recognized gains (losses), net for hedged item 1 1
Foreign currency swaps | Derivatives designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Foreign currency swaps | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 12 0
Recognized gains (losses), net for hedged item 0 0
Foreign currency swaps | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Equity options | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives (247) (234)
Recognized gains (losses), net for hedged item 0 0
Equity options | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Futures contracts | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 3 5
Recognized gains (losses), net for hedged item 0 0
Futures contracts | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Other derivative investments | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 2 (4)
Recognized gains (losses), net for hedged item 0 0
Other derivative investments | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Other embedded derivatives | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives (1) 0
Recognized gains (losses), net for hedged item 0 0
Other embedded derivatives | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Indexed annuities/IUL embedded derivatives | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item 0 0
Indexed annuities/IUL embedded derivatives | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives (260) (62)
Recognized gains (losses), net for hedged item 0 0
Reinsurance related embedded derivatives | Derivatives not designated as hedging instruments    
Derivative    
Recognized gains (losses), net for derivatives 261 (41)
Recognized gains (losses), net for hedged item 0 0
Reinsurance related embedded derivatives | Derivatives not designated as hedging instruments | Fair Value Hedging    
Derivative    
Recognized gains (losses), net for derivatives 0 0
Recognized gains (losses), net for hedged item $ 0 $ 0