v3.26.1
Fair Value (Unobservable Input Reconciliation) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Net Derivatives (2)        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]        
Balance, beginning of period $ 7 $ 9 $ 6 $ 9
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 (1) 0 (1)
Total realized/unrealized gains (losses) included in AOCI 0 0 1 0
Purchases (5) 0 0 0 0
Sales (5) 0 0 0 0
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) 0 0 0 0
Balance, end of period 7 8 7 8
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 (1) 0 (1)
Changes in unrealized gains (losses) included in OCI 0 (1) 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 (10,597) (9,925) (12,327) (11,493)
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) (3,330) (2,161) (2,518) (984)
Total realized/unrealized gains (losses) included in AOCI 0 0 0 0
Purchases (5) 0 0 0 0
Sales (5) 0 0 0 0
Issuances (5) 0 0 0 0
Settlements (5) 984 520 1,902 911
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) 0 0 0 0
Balance, end of period (12,943) (11,566) (12,943) (11,566)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (4,176) (2,430) (3,364) (1,480)
Changes in unrealized gains (losses) included in OCI 0 0 0 0
Corporate (1)        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period 899 666 800 1,092
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 (38) (10) (13)
Total realized/unrealized gains (losses) included in AOCI (20) 37 (21) 12
Purchases (5) 132 63 209 106
Sales (5) (140) (10) (203) (60)
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 188 54 227 24
Transfers out of Level 3 (6) (160) (4) (103) (393)
Balance, end of period 899 768 899 768
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (1) (5) (7) (7)
Changes in unrealized gains (losses) included in OCI (11) 4 (17) 11
Structured Securities        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period 381 340 269 365
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 1 0 (9) 0
Total realized/unrealized gains (losses) included in AOCI (2) (3) 7 (5)
Purchases (5) 83 127 106 148
Sales (5) (29) (10) (62) (42)
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) (162) (48) (39) (60)
Balance, end of period 272 406 272 406
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0 (10) 0
Changes in unrealized gains (losses) included in OCI (1) 7 8 (5)
Foreign government        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period 24 22 24 21
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 0 0 0
Total realized/unrealized gains (losses) included in AOCI 0 2 0 3
Purchases (5) 0 0 0 0
Sales (5) 0 0 0 0
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) 0 0 0 0
Balance, end of period 24 24 24 24
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0 0 0
Changes in unrealized gains (losses) included in OCI 0 2 0 3
Trading Securities        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period 0 0 0 0
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 0 0 0
Total realized/unrealized gains (losses) included in AOCI 0 0 0 0
Purchases (5) 0 3 0 3
Sales (5) 0 0 0 0
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) 0 0 0 0
Balance, end of period 0 3 0 3
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0 0 0
Changes in unrealized gains (losses) included in OCI 0 0 0 0
Equity Securities        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period 6 14 6 15
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 0 0 (1)
Total realized/unrealized gains (losses) included in AOCI 0 0 0 0
Purchases (5) 0 0 0 0
Sales (5) 0 (8) 0 (8)
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) 0 0 0 0
Balance, end of period 6 6 6 6
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0 0 0
Changes in unrealized gains (losses) included in OCI 0 0 0 0
Short-term Investments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Balance, beginning of period 0 2 6 2
Total realized/unrealized gains (losses) included in net income (loss) (3) (4) 0 0 0 0
Total realized/unrealized gains (losses) included in AOCI 0 0 0 0
Purchases (5) 0 0 0 0
Sales (5) 0 (2) (6) (2)
Issuances (5) 0 0 0 0
Settlements (5) 0 0 0 0
Transfers into Level 3 (6) 0 0 0 0
Transfers out of Level 3 (6) 0 0 0 0
Balance, end of period 0 0 0 0
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 0 0 0 0
Changes in unrealized gains (losses) included in OCI $ 0 $ 0 $ 0 $ 0