v3.25.4
Fair Value of Financial Instruments - Fair Value Measured on a Recurring Basis Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Corporate bonds | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 6,888 $ 6,350 $ 5,017
Items Included in Net Income (63) (3) (2)
Gains (Losses) in OCI and Other 19 2 11
Issuances, Sales, Maturities, Settlements, Calls, Net (238) 696 1,345
Transfers Into or Out of Level 3, Net 691 (157) (21)
Ending Fair Value $ 7,297 6,888 6,350
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
State and municipal bonds | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 0 5 35
Items Included in Net Income   0 (4)
Gains (Losses) in OCI and Other   0 4
Issuances, Sales, Maturities, Settlements, Calls, Net   0 (30)
Transfers Into or Out of Level 3, Net   (5) 0
Ending Fair Value   0 5
Foreign government bonds | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Issuances, Sales, Maturities, Settlements, Calls, Net     (30)
RMBS | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value 1 1 1
Items Included in Net Income 0 0 0
Gains (Losses) in OCI and Other 1 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 67 0 5
Transfers Into or Out of Level 3, Net (69) 0 (5)
Ending Fair Value $ 0 1 1
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
CMBS | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 8 8 0
Items Included in Net Income 0 0 0
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 84 19 (4)
Transfers Into or Out of Level 3, Net (7) (19) 12
Ending Fair Value $ 85 8 8
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
ABS | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 2,092 1,476 1,117
Items Included in Net Income (29) 2 0
Gains (Losses) in OCI and Other 55 23 9
Issuances, Sales, Maturities, Settlements, Calls, Net 1,651 980 733
Transfers Into or Out of Level 3, Net (185) (389) (383)
Ending Fair Value $ 3,584 2,092 1,476
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Hybrid and redeemable preferred securities | Fixed maturity AFS securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 63 48 34
Items Included in Net Income 0 0 0
Gains (Losses) in OCI and Other 1 3 0
Issuances, Sales, Maturities, Settlements, Calls, Net 19 12 (2)
Transfers Into or Out of Level 3, Net 0 0 16
Ending Fair Value $ 83 63 48
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Trading securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 259 272 568
Items Included in Net Income 7 2 17
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 35 (18) (313)
Transfers Into or Out of Level 3, Net 28 3 0
Ending Fair Value $ 329 259 272
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Equity securities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 34 36 153
Items Included in Net Income (9) (3) (19)
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 1 0 (98)
Transfers Into or Out of Level 3, Net 2 1 0
Ending Fair Value $ 28 34 36
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Mortgage loans on real estate      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 232 288 487
Items Included in Net Income (3) 9 (7)
Gains (Losses) in OCI and Other 4 1 5
Issuances, Sales, Maturities, Settlements, Calls, Net (34) (66) (197)
Transfers Into or Out of Level 3, Net 0 0 0
Ending Fair Value $ 199 232 288
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Other investments      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 23 0  
Items Included in Net Income 0 0  
Gains (Losses) in OCI and Other 0 0  
Issuances, Sales, Maturities, Settlements, Calls, Net (22) 13  
Transfers Into or Out of Level 3, Net 0 10  
Ending Fair Value $ 1 $ 23 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]   Unrealized investment gain (loss)  
Ceded MRBs | Other Assets      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 14 $ 274 540
Items Included in Net Income 5 (260) (266)
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 0 0 0
Transfers Into or Out of Level 3, Net 0 0 0
Ending Fair Value $ 19 14 274
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Ceded MRBs | Other liabilities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value   (1,149) (246)
Items Included in Net Income     (903)
Gains (Losses) in OCI and Other     0
Issuances, Sales, Maturities, Settlements, Calls, Net     0
Transfers Into or Out of Level 3, Net     0
Ending Fair Value     (1,149)
Indexed annuity ceded embedded derivatives | Other Assets      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ 1,970 940 525
Items Included in Net Income 222 227 6
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 290 803 409
Transfers Into or Out of Level 3, Net 0 0 0
Ending Fair Value $ 2,482 1,970 940
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Indexed annuity ceded embedded derivatives | Policyholder account balances      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ (12,449) (9,077) (4,783)
Items Included in Net Income   (3,059) (3,193)
Gains (Losses) in OCI and Other   0 0
Issuances, Sales, Maturities, Settlements, Calls, Net   (313) (1,101)
Transfers Into or Out of Level 3, Net   0 0
Ending Fair Value   (12,449) (9,077)
LPR ceded derivative | Other Assets      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value 190 206 212
Items Included in Net Income 12 (16) (6)
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 0 0 0
Transfers Into or Out of Level 3, Net 0 0 0
Ending Fair Value $ 202 190 206
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Indexed annuity ceded embedded derivatives | Policyholder account balances      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ (12,449)    
Items Included in Net Income (2,237)    
Gains (Losses) in OCI and Other 0    
Issuances, Sales, Maturities, Settlements, Calls, Net (429) (313) (1,101)
Transfers Into or Out of Level 3, Net 0    
Ending Fair Value $ (15,115) (12,449)  
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Funds withheld reinsurance liabilities – reinsurance-related embedded derivatives | Other liabilities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ (59) 0  
Items Included in Net Income (97) (59)  
Gains (Losses) in OCI and Other 0 0  
Issuances, Sales, Maturities, Settlements, Calls, Net 0 0  
Transfers Into or Out of Level 3, Net 0 0  
Ending Fair Value $ (156) (59) 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Ceded MRBs | Other liabilities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ (2,763) (1,149)  
Items Included in Net Income (121) (1,614)  
Gains (Losses) in OCI and Other 0 0  
Issuances, Sales, Maturities, Settlements, Calls, Net 0 0  
Transfers Into or Out of Level 3, Net 0 0  
Ending Fair Value $ (2,884) (2,763) (1,149)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Derivative investments      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Beginning Fair Value $ (136) 36 2
Items Included in Net Income 24 (124) (13)
Gains (Losses) in OCI and Other 0 0 0
Issuances, Sales, Maturities, Settlements, Calls, Net 4 3 16
Transfers Into or Out of Level 3, Net 0 (51) 31
Ending Fair Value $ (108) (136) $ 36
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income (loss)    
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Unrealized investment gain (loss)    
Derivative liabilities      
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]      
Issuances, Sales, Maturities, Settlements, Calls, Net $ 4 $ 3