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 $ 6 $ 16
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 33 5
Total realized/unrealized gains (losses) included in net income (loss) 6 17
Total realized/unrealized gains (losses) included in AOCI (1) 1
Purchases 0 0
Sales 0 0
Issuances 0 0
Settlements 0 (1)
Transfers into Level 3 0 0
Transfers out of Level 3 (2) (1)
Balance, end of period 36 21
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 6 16
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 299 (32)
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 (57) (9)
Total realized/unrealized gains (losses) included in net income (loss) 300 (32)
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 0 0
Sales 0 0
Issuances (92) 0
Settlements 1 (2)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 152 (43)
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 299 (32)
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 30,350 26,505
Total realized/unrealized gains (losses) included in net income (loss) (5) (23)
Total realized/unrealized gains (losses) included in AOCI (578) 423
Purchases 2,047 1,314
Sales (518) (448)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 87 116
Transfers out of Level 3 (193) (375)
Balance, end of period 31,190 27,512
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 10 (1)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (575) 393
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 10 (1)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (575) 393
Foreign government    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 52 41
Total realized/unrealized gains (losses) included in net income (loss) 0 0
Total realized/unrealized gains (losses) included in AOCI (1) 3
Purchases 614 15
Sales (2) (1)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 43 0
Transfers out of Level 3 (8) (1)
Balance, end of period 698 57
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 (1) 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 (1) 3
Structured Products    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 3,493 8,639
Total realized/unrealized gains (losses) included in net income (loss) (5) 3
Total realized/unrealized gains (losses) included in AOCI (19) 40
Purchases 1,794 1,949
Sales (223) (140)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 39 7
Transfers out of Level 3 (1,016) (5,691)
Balance, end of period 4,063 4,807
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (6) 3
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (16) 40
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) 3
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period (16) 40
Equity Securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 317 236
Total realized/unrealized gains (losses) included in net income (loss) 12 15
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 30 20
Sales (11) (23)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 348 248
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period 12 (4)
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 12 (4)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Unit-linked and FVO Securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 1,459 1,190
Total realized/unrealized gains (losses) included in net income (loss) (71) (20)
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 223 106
Sales (101) (101)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 24 0
Transfers out of Level 3 (19) 0
Balance, end of period 1,515 1,175
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (65) (14)
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 (65) (14)
Changes in unrealized gains (losses) included in AOCI for the instruments still held at end of period 0 0
Short-term Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 42 5
Total realized/unrealized gains (losses) included in net income (loss) 0 0
Total realized/unrealized gains (losses) included in AOCI (3) (2)
Purchases 70 10
Sales (2) (1)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 (6) (3)
Balance, end of period 101 9
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 (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 2 (3)
Other Investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 1,137 1,010
Total realized/unrealized gains (losses) included in net income (loss) (89) 2
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 131 147
Sales (46) (38)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 1,133 1,121
Changes in unrealized gains (losses) included in net income (loss) for the instruments still held at end of period (87) 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 (87) 0
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 891 990
Total realized/unrealized gains (losses) included in net income (loss) (10) 5
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 23 42
Sales (80) (58)
Issuances 0 0
Settlements 0 0
Transfers into Level 3 0 1
Transfers out of Level 3 (30) (8)
Balance, end of period 794 972
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 (1,206) 0
Total realized/unrealized gains (losses) included in net income (loss) 0 0
Total realized/unrealized gains (losses) included in AOCI 0 0
Purchases 0 0
Sales 0 0
Issuances 0 0
Settlements 68 0
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period (1,138) 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