v3.26.1
Fair Value (Unobservable Input Reconciliation) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Net Derivatives (2)    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance, beginning of period $ 6 $ 9
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 1 0
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases (5) 0 0
Sales (5) 0 0
Issuances (5) 0 0
Settlements (5) 0 0
Transfers into Level 3 (6) 0 0
Transfers out of Level 3 (6) 0 0
Balance, end of period 7 9
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 1 0
Changes in unrealized gains (losses) included in OCI 0 0
Embedded Derivatives on Index-Linked Annuities    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Balance, beginning of period (12,327) (11,493)
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 812 1,177
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases (5) 0 0
Sales (5) 0 0
Issuances (5) 0 0
Settlements (5) 918 391
Transfers into Level 3 (6) 0 0
Transfers out of Level 3 (6) 0 0
Balance, end of period (10,597) (9,925)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 436 950
Changes in unrealized gains (losses) included in OCI 0 0
Corporate (1)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 798 1,092
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) (10) (8)
Total realized/unrealized gains (losses) included in AOCI 2 8
Purchases (5) 151 43
Sales (5) (62) (27)
Issuances (5) 0 0
Settlements (5) 0 0
Transfers into Level 3 (6) 49 4
Transfers out of Level 3 (6) (31) (446)
Balance, end of period 897 666
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (6) 24
Changes in unrealized gains (losses) included in OCI 2 (19)
Structured Securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 269 365
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) (10) 0
Total realized/unrealized gains (losses) included in AOCI 8 (1)
Purchases (5) 183 69
Sales (5) (33) (32)
Issuances (5) 0 0
Settlements (5) 0 0
Transfers into Level 3 (6) 0 0
Transfers out of Level 3 (6) (36) (61)
Balance, end of period 381 340
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (10) 0
Changes in unrealized gains (losses) included in OCI 8 (2)
Foreign government    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 24 21
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 0
Total realized/unrealized gains (losses) included in AOCI 0 1
Purchases (5) 0 0
Sales (5) 0 0
Issuances (5) 0 0
Settlements (5) 0 0
Transfers into Level 3 (6) 0 0
Transfers out of Level 3 (6) 0 0
Balance, end of period 24 22
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 OCI 0 1
Equity Securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 6 15
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 (1)
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases (5) 0 0
Sales (5) 0 0
Issuances (5) 0 0
Settlements (5) 0 0
Transfers into Level 3 (6) 0 0
Transfers out of Level 3 (6) 0 0
Balance, end of period 6 14
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 (1)
Changes in unrealized gains (losses) included in OCI 0 0
Short-term Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 6 2
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 0
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases (5) 0 0
Sales (5) (6) 0
Issuances (5) 0 0
Settlements (5) 0 0
Transfers into Level 3 (6) 0 0
Transfers out of Level 3 (6) 0 0
Balance, end of period 0 2
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 OCI $ 0 $ 0