v3.26.1
Reserves for Future Policy Benefits and Contract Owner Account Balances - Liability for Future Policy Benefits (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
yr
Dec. 31, 2025
USD ($)
yr
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Present Value of Expected Future Policy Benefits:        
Net liability for future policy benefits $ 8,845 $ 8,982    
Liability for Claims and Claims Adjustment Expense $ 519 $ 458 $ 561 $ 595
Current discount rate 4.30% 4.30%    
Employee Benefits Group        
Present Value of Expected Net Premiums:        
Balance at beginning of period $ 4 $ 4    
Beginning balance at original discount rate 4 4    
Effect of change in cash flow assumptions 0 0    
Effect of actual variances from expected experience 0 0    
Adjusted balance at January 1 4 4    
Interest accrual 0 0    
Net premiums collected 0 0    
Ending balance at original discount rate 4 4    
Effects of changes in discount rate assumptions 0 0    
Balance at end of period 4 4    
Present Value of Expected Future Policy Benefits:        
Balance at beginning of period 792 772    
Beginning balance at original discount rate 802 801    
Effect of change in cash flow assumptions 0 (5)    
Effect of actual variances from expected experience (11) (30)    
Adjusted balance at January 1 791 766    
Issuances 92 102    
Interest accrual 12 17    
Benefit payments (83) (83)    
Ending balance at original discount rate 812 802    
Effects of changes in discount rate assumptions (20) (10)    
Balance at end of period 792 792    
Net liability for future policy benefits 788 788    
Less: Reinsurance recoverable 358 353    
Net additional liability, after reinsurance recoverable 430 435    
Expected future benefit payments, Undiscounted 1,013 1,005    
Expected future gross premiums, Undiscounted 10 11    
Expected future benefit payments, Discounted 812 802   801
Expected future gross premiums, Discounted $ 8 $ 8    
Weighted average duration (in years) | yr 7 7    
Interest accretion rate 4.30% 4.20%    
Current discount rate 5.30% 5.00%    
Employee Benefits Voluntary        
Present Value of Expected Net Premiums:        
Balance at beginning of period $ 166 $ 171    
Beginning balance at original discount rate 169 180    
Effect of change in cash flow assumptions 0 (11)    
Effect of actual variances from expected experience 13 20    
Adjusted balance at January 1 182 189    
Interest accrual 4 6    
Net premiums collected (17) (26)    
Ending balance at original discount rate 169 169    
Effects of changes in discount rate assumptions (5) (3)    
Balance at end of period 164 166    
Present Value of Expected Future Policy Benefits:        
Balance at beginning of period 498 461    
Beginning balance at original discount rate 517 487    
Effect of change in cash flow assumptions 0 (12)    
Effect of actual variances from expected experience 31 60    
Adjusted balance at January 1 548 535    
Issuances 0 0    
Interest accrual 9 14    
Benefit payments (21) (32)    
Ending balance at original discount rate 536 517    
Effects of changes in discount rate assumptions (23) (19)    
Balance at end of period 513 498    
Net liability for future policy benefits 349 332    
Less: Reinsurance recoverable 20 16    
Net additional liability, after reinsurance recoverable 329 316    
Expected future benefit payments, Undiscounted 939 910    
Expected future gross premiums, Undiscounted 571 566    
Expected future benefit payments, Discounted 536 517   487
Expected future gross premiums, Discounted $ 399 $ 398    
Weighted average duration (in years) | yr 14,000,000 14,000,000    
Interest accretion rate 5.00% 5.10%    
Current discount rate 5.80% 5.70%    
Businesses Exited        
Present Value of Expected Net Premiums:        
Balance at beginning of period $ 2,557 $ 2,872    
Beginning balance at original discount rate 2,479 2,842    
Effect of change in cash flow assumptions 0 (194)    
Effect of actual variances from expected experience 21 (17)    
Adjusted balance at January 1 2,500 2,631    
Interest accrual 67 148    
Net premiums collected (144) (300)    
Ending balance at original discount rate 2,423 2,479    
Effects of changes in discount rate assumptions 34 78    
Balance at end of period 2,457 2,557    
Present Value of Expected Future Policy Benefits:        
Balance at beginning of period 6,527 7,017    
Beginning balance at original discount rate 6,494 7,138    
Effect of change in cash flow assumptions 0 (244)    
Effect of actual variances from expected experience 27 (57)    
Adjusted balance at January 1 6,521 6,837    
Issuances 5 13    
Interest accrual 165 351    
Benefit payments (361) (707)    
Ending balance at original discount rate 6,330 6,494    
Effects of changes in discount rate assumptions (73) 33    
Balance at end of period 6,257 6,527    
Net liability for future policy benefits 3,800 3,970    
Less: Reinsurance recoverable 3,715 3,883    
Net additional liability, after reinsurance recoverable 85 87    
Expected future benefit payments, Discounted $ 6,330 $ 6,494   7,138
Weighted average duration (in years) | yr 7,000,000 8,000,000    
Interest accretion rate 5.10% 5.00%    
Current discount rate 5.50% 5.30%    
Businesses Exited - Additional liability        
Present Value of Expected Future Policy Benefits:        
Balance at beginning of period $ 1,880 $ 1,883    
Effect of change in cash flow assumptions   0   59
Effect of actual variances from expected experience   7   (11)
Adjusted balance at January 1   1,887   $ 1,931
Interest accrual 39 80    
Benefit payments (201) (406)    
Assessments 125 275    
Balance at end of period   1,880    
Net liability for future policy benefits 1,850 1,880    
Less: Reinsurance recoverable 1,798 1,827    
Net additional liability, after reinsurance recoverable 52 53    
Businesses Exited - Other        
Present Value of Expected Future Policy Benefits:        
Net liability for future policy benefits 1,224 1,236    
Other        
Present Value of Expected Future Policy Benefits:        
Net liability for future policy benefits $ 315 $ 318