v3.26.1
Policyholder Account Balances, Future Policy Benefits and Claims - Balance of and Changes in Policyholder Account Balances (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Policyholder Account Balance [Roll Forward]    
Beginning balance $ 37,005 $ 32,542
Contract deposits 1,088 4,602
Policy charges (98) (400)
Surrenders and other benefits (649) (2,424)
Net transfer from (to) separate account liabilities (39) (163)
Variable account index-linked adjustments (482) 2,206
Interest credited 163 642
Ending balance 36,988 37,005
Variable Annuities    
Policyholder Account Balance [Roll Forward]    
Beginning balance 3,320 3,680
Contract deposits 13 57
Policy charges (3) (13)
Surrenders and other benefits (111) (486)
Net transfer from (to) separate account liabilities (5) (31)
Variable account index-linked adjustments 0 0
Interest credited 26 113
Ending balance $ 3,240 $ 3,320
Weighted-average crediting rate 3.30% 3.30%
Cash surrender value $ 3,223 $ 3,302
Structured Variable Annuities    
Policyholder Account Balance [Roll Forward]    
Beginning balance 21,504 16,330
Contract deposits 902 3,816
Policy charges (1) (4)
Surrenders and other benefits (286) (846)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments (482) 2,206
Interest credited 1 2
Ending balance $ 21,638 $ 21,504
Weighted-average crediting rate 1.90% 1.90%
Cash surrender value $ 20,582 $ 20,582
Fixed Annuities    
Policyholder Account Balance [Roll Forward]    
Beginning balance 4,918 5,369
Contract deposits 8 35
Policy charges 0 0
Surrenders and other benefits (147) (677)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments 0 0
Interest credited 46 191
Ending balance $ 4,825 $ 4,918
Weighted-average crediting rate 3.90% 3.80%
Cash surrender value $ 4,824 $ 4,916
Fixed Indexed Annuities    
Policyholder Account Balance [Roll Forward]    
Beginning balance 289 305
Contract deposits 0 0
Policy charges 0 0
Surrenders and other benefits (13) (26)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments 0 0
Interest credited 3 10
Ending balance $ 279 $ 289
Weighted-average crediting rate 2.10% 2.10%
Cash surrender value $ 263 $ 272
Non-Life Contingent Payout Annuities    
Policyholder Account Balance [Roll Forward]    
Beginning balance 435 447
Contract deposits 21 73
Policy charges 0 0
Surrenders and other benefits (25) (99)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments 0 0
Interest credited 3 14
Ending balance 434 435
Universal Life Insurance    
Policyholder Account Balance [Roll Forward]    
Beginning balance 1,349 1,405
Contract deposits 26 138
Policy charges (41) (169)
Surrenders and other benefits (14) (72)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments 0 0
Interest credited 11 47
Ending balance $ 1,331 $ 1,349
Weighted-average crediting rate 3.60% 3.60%
Net amount at risk $ 7,858 $ 7,944
Cash surrender value 1,229 1,241
Variable Universal Life Insurance    
Policyholder Account Balance [Roll Forward]    
Beginning balance 1,705 1,647
Contract deposits 80 318
Policy charges (23) (91)
Surrenders and other benefits (23) (102)
Net transfer from (to) separate account liabilities (34) (132)
Variable account index-linked adjustments 0 0
Interest credited 17 65
Ending balance $ 1,722 $ 1,705
Weighted-average crediting rate 3.90% 3.90%
Net amount at risk $ 57,545 $ 57,269
Cash surrender value 1,113 1,109
Indexed Universal Life Insurance    
Policyholder Account Balance [Roll Forward]    
Beginning balance 3,048 2,894
Contract deposits 38 165
Policy charges (30) (123)
Surrenders and other benefits (16) (71)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments 0 0
Interest credited 52 183
Ending balance $ 3,092 $ 3,048
Weighted-average crediting rate 3.00% 3.00%
Net amount at risk $ 12,947 $ 13,040
Cash surrender value 2,696 2,640
Other Life Insurance    
Policyholder Account Balance [Roll Forward]    
Beginning balance 437 465
Contract deposits 0 0
Policy charges 0 0
Surrenders and other benefits (14) (45)
Net transfer from (to) separate account liabilities 0 0
Variable account index-linked adjustments 0 0
Interest credited 4 17
Ending balance $ 427 $ 437
Weighted-average crediting rate 4.00% 4.00%
Net amount at risk $ 117 $ 121
Cash surrender value $ 269 $ 274