v3.26.1
Derivative Instruments - Schedule of Aggregate Contractual Notional Amounts and Fair Values of Derivatives (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets    
Fair Value $ 422 $ 448
Freestanding derivatives    
Derivative [Line Items]    
Contractual/Notional Amount 107,301 97,830
Assets    
Fair Value 406 430
Liabilities    
Fair Value 647 235
Net Fair Value, Asset (Liability) (241) 195
Freestanding derivatives | Cross-currency swaps    
Derivative [Line Items]    
Contractual/Notional Amount 1,729 1,379
Assets    
Fair Value 137 133
Liabilities    
Fair Value 107 114
Net Fair Value, Asset (Liability) 30 19
Freestanding derivatives | Equity index call options    
Derivative [Line Items]    
Contractual/Notional Amount 1,500  
Assets    
Fair Value 15  
Liabilities    
Fair Value 0  
Net Fair Value, Asset (Liability) 15  
Freestanding derivatives | Equity index futures    
Derivative [Line Items]    
Contractual/Notional Amount 48,419 43,905
Assets    
Fair Value 0 0
Liabilities    
Fair Value 0 0
Net Fair Value, Asset (Liability) 0 0
Freestanding derivatives | Equity index put options    
Derivative [Line Items]    
Contractual/Notional Amount 16,500 16,500
Assets    
Fair Value 83 114
Liabilities    
Fair Value 0 0
Net Fair Value, Asset (Liability) 83 114
Freestanding derivatives | Interest rate swaps - cleared    
Derivative [Line Items]    
Contractual/Notional Amount 4,780 2,485
Assets    
Fair Value 0 0
Liabilities    
Fair Value 0 0
Net Fair Value, Asset (Liability) 0 0
Freestanding derivatives | Interest rate futures    
Derivative [Line Items]    
Contractual/Notional Amount 19,968 21,874
Assets    
Fair Value 0 0
Liabilities    
Fair Value 0 0
Net Fair Value, Asset (Liability) 0 0
Freestanding derivatives | Total return swaps    
Derivative [Line Items]    
Contractual/Notional Amount 8,356 3,544
Assets    
Fair Value 134 22
Liabilities    
Fair Value 53 43
Net Fair Value, Asset (Liability) 81 (21)
Freestanding derivatives | Bond forwards    
Derivative [Line Items]    
Contractual/Notional Amount 6,049 8,143
Assets    
Fair Value 37 161
Liabilities    
Fair Value 487 78
Net Fair Value, Asset (Liability) (450) 83
Embedded derivatives    
Assets    
Fair Value 0 0
Liabilities    
Fair Value 9,245 6,906
Net Fair Value, Asset (Liability) (9,245) (6,906)
Embedded derivatives | Fixed index annuity embedded derivatives    
Assets    
Fair Value 0 0
Liabilities    
Fair Value 850 863
Net Fair Value, Asset (Liability) (850) (863)
Embedded derivatives | Registered index linked annuity embedded derivatives    
Assets    
Fair Value 0 0
Liabilities    
Fair Value 8,395 6,043
Net Fair Value, Asset (Liability) (8,395) (6,043)
Derivatives related to funds withheld under reinsurance treaties    
Derivative [Line Items]    
Contractual/Notional Amount 842 1,291
Assets    
Fair Value 1,667 1,770
Liabilities    
Fair Value 10 22
Net Fair Value, Asset (Liability) 1,657 1,748
Derivatives related to funds withheld under reinsurance treaties | Cross-currency swaps    
Derivative [Line Items]    
Contractual/Notional Amount 158 158
Assets    
Fair Value 10 11
Liabilities    
Fair Value 0 1
Net Fair Value, Asset (Liability) 10 10
Derivatives related to funds withheld under reinsurance treaties | Cross-currency forwards    
Derivative [Line Items]    
Contractual/Notional Amount 684 1,133
Assets    
Fair Value 6 7
Liabilities    
Fair Value 10 21
Net Fair Value, Asset (Liability) (4) (14)
Derivatives related to funds withheld under reinsurance treaties | Funds withheld embedded derivative    
Assets    
Fair Value 1,651 1,752
Liabilities    
Fair Value 0 0
Net Fair Value, Asset (Liability) 1,651 1,752
Derivative assets    
Derivative [Line Items]    
Contractual/Notional Amount 108,143 99,121
Assets    
Fair Value 2,073 2,200
Derivative liabilities    
Liabilities    
Fair Value 9,902 7,163
Derivative    
Liabilities    
Net Fair Value, Asset (Liability) $ (7,829) $ (4,963)