v3.26.1
Future Policy Benefits - Schedule of liabilities by product (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Movement in Liability for Future Policy Benefits [Roll Forward]        
Balance, beginning of year $ 60,971      
Effect of changes in experience     $ (29) $ (18)
Adjusted beginning of year balance     9,699 9,998
Interest accrual 188 $ 196    
Other 2 0    
Net liability for future policy benefits, end of period 59,541 57,485    
Less: Reinsurance recoverable (20,311) (20,735)    
Net liability for future policy benefits after reinsurance recoverable 39,230 36,750    
Universal Life        
Movement in Liability for Future Policy Benefits [Roll Forward]        
Balance, beginning of year 4,295 4,088    
Effect of changes in experience     181 215
Adjusted beginning of year balance     4,476 4,303
Assessments 318 327    
Excess benefits paid (509) (581)    
Interest accrual 85 80    
Other (4) (1)    
Changes related to unrealized appreciation (depreciation) of investments (26) 33    
Net liability for future policy benefits, end of period 4,340 4,161    
Less: Reinsurance recoverable (223) (204)    
Net liability for future policy benefits after reinsurance recoverable 4,117 3,957    
Life Insurance        
Movement in Liability for Future Policy Benefits [Roll Forward]        
Effect of changes in experience     (21) (22)
Adjusted beginning of year balance     8,848 9,062
Interest accrual 170 176    
Other 2 0    
Net liability for future policy benefits, end of period 13,401 13,350    
Less: Reinsurance recoverable (649) (656)    
Net liability for future policy benefits after reinsurance recoverable $ 12,752 $ 12,694    
Weighted average liability duration of the liability for future policy benefits (in years) 10 years 8 months 12 days 10 years 6 months    
Life Insurance | Universal Life        
Movement in Liability for Future Policy Benefits [Roll Forward]        
Balance, beginning of year $ 4,241 $ 4,034    
Effect of changes in experience     183 217
Adjusted beginning of year balance     4,424 4,251
Assessments 318 327    
Excess benefits paid (509) (581)    
Interest accrual 84 79    
Other (4) (1)    
Changes related to unrealized appreciation (depreciation) of investments (26) 33    
Net liability for future policy benefits, end of period 4,287 4,108    
Less: Reinsurance recoverable (170) (151)    
Net liability for future policy benefits after reinsurance recoverable $ 4,117 $ 3,957    
Weighted average liability duration of the liability for future policy benefits (in years) 25 years 10 months 24 days 25 years 1 month 6 days    
Corporate & Other        
Movement in Liability for Future Policy Benefits [Roll Forward]        
Effect of changes in experience     (8) 4
Adjusted beginning of year balance     851 936
Interest accrual $ 18 $ 20    
Other 0 0    
Net liability for future policy benefits, end of period 19,592 20,278    
Less: Reinsurance recoverable (19,592) (20,034)    
Net liability for future policy benefits after reinsurance recoverable $ 0 $ 244    
Weighted average liability duration of the liability for future policy benefits (in years) 10 years 2 months 12 days 10 years 6 months    
Corporate & Other | Universal Life        
Movement in Liability for Future Policy Benefits [Roll Forward]        
Balance, beginning of year $ 54 $ 54    
Effect of changes in experience     (2) (2)
Adjusted beginning of year balance     $ 52 $ 52
Assessments 0 0    
Excess benefits paid 0 0    
Interest accrual 1 1    
Other 0 0    
Changes related to unrealized appreciation (depreciation) of investments 0 0    
Net liability for future policy benefits, end of period 53 53    
Less: Reinsurance recoverable (53) (53)    
Net liability for future policy benefits after reinsurance recoverable $ 0 $ 0    
Weighted average liability duration of the liability for future policy benefits (in years) 8 years 6 months 8 years 9 months 18 days