v3.26.1
Fair Value (Unobservable Input Reconciliation) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Net Derivatives    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period $ 2 $ (3)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance, beginning of period (1) 3
Total realized/unrealized gains (losses) included in net income (loss) 2 (3)
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 0 0
Sales 0 0
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 1 0
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 2 (3)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Net Embedded Derivatives    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 213 (193)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance, beginning of period 219 457
Total realized/unrealized gains (losses) included in net income (loss) 213 (193)
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 0 0
Sales 0 0
Issuances (92) 0
Settlements 2 (2)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 342 262
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 213 (193)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Corporate fixed maturity securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 16,574 15,091
Total realized/unrealized gains (losses) included in net income (loss) (4) (25)
Total realized/unrealized gains (losses) included in AOCI (305) 227
Purchases 1,339 698
Sales (403) (355)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 84 112
Transfers out of Level 3 (138) (279)
Balance, end of period 17,147 15,469
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (9) (3)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (303) 204
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (9) (3)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (303) 204
Structured Products    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 2,052 5,590
Total realized/unrealized gains (losses) included in net income (loss) (5) 4
Total realized/unrealized gains (losses) included in AOCI (7) 18
Purchases 1,343 1,155
Sales (135) (96)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 32 19
Transfers out of Level 3 (593) (3,679)
Balance, end of period 2,687 3,011
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (6) 4
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (7) 18
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (6) 4
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (7) 18
Foreign government    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 15 12
Total realized/unrealized gains (losses) included in net income (loss) 0 0
Total realized/unrealized gains (losses) included in AOCI 0 4
Purchases 1 0
Sales (2) (1)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 5 0
Transfers out of Level 3 0 (1)
Balance, end of period 19 14
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 3
Short-term Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 34 1
Total realized/unrealized gains (losses) included in net income (loss) 0 0
Total realized/unrealized gains (losses) included in AOCI (3) 0
Purchases 11 0
Sales (1) (1)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 (6) 0
Balance, end of period 35 0
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 2 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 2 0
Other Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 1,459 1,371
Total realized/unrealized gains (losses) included in net income (loss) (114) (11)
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 101 21
Sales (3) (33)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 16 0
Transfers out of Level 3 0 0
Balance, end of period 1,459 1,348
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (96) (29)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (96) (29)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Separate Accounts    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 866 859
Total realized/unrealized gains (losses) included in net income (loss) (10) 3
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 23 42
Sales (57) (42)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 1
Transfers out of Level 3 (30) (6)
Balance, end of period 792 857
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Notes Issued by Consolidated VIE    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 0 0
Total realized/unrealized gains (losses) included in net income (loss) 0 0
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases (801) 0
Sales 0 0
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period (801) 0
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period $ 0 $ 0