v3.26.1
Market Risk Benefits - Rollforward of market risk benefits (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Market Risk Benefit [Roll Forward]        
Balance, beginning of year $ 5,813 $ 4,344    
Effect of changes in our own credit risk (815) (940) $ (1,390) $ (880)
Balance, beginning of year, before effect of changes in our own credit risk 4,423 3,464    
Issuances 236 173    
Interest accrual 58 43    
Attributed fees 191 195    
Expected claims (16) (16)    
Effect of changes in interest rates 69 273    
Effect of changes in interest rate volatility 18 (19)    
Effect of changes in equity markets 168 177    
Effect of changes in equity index volatility (40) (41)    
Actual outcome different from model expected outcome 60 47    
Effect of changes in future expected policyholder behavior 0 1    
Effect of changes in other future expected assumptions (10) 2    
Other, including foreign exchange 0 2    
Balance, end of period 5,157 4,301    
Effect of changes in our own credit risk 815 940 1,390 880
Balance, end of period 5,972 5,241    
Less: Reinsured MRB, end of period (1,267) (53)    
Net 4,705 5,188    
Combined        
Net amount at risk        
Net amount at risk 535 632    
GMDB only        
Net amount at risk        
Net amount at risk 716 808    
GMWB only        
Net amount at risk        
Net amount at risk 687 331    
Individual Retirement        
Market Risk Benefit [Roll Forward]        
Balance, beginning of year 5,118 3,757    
Effect of changes in our own credit risk (217) (240) (556) (224)
Balance, beginning of year, before effect of changes in our own credit risk 4,562 3,533    
Issuances 220 160    
Interest accrual 60 45    
Attributed fees 0 0    
Expected claims 0 0    
Effect of changes in interest rates 55 114    
Effect of changes in interest rate volatility (4) 7    
Effect of changes in equity markets 11 4    
Effect of changes in equity index volatility (1) 0    
Actual outcome different from model expected outcome 16 47    
Effect of changes in future expected policyholder behavior 0 0    
Effect of changes in other future expected assumptions 0 2    
Other, including foreign exchange 0 0    
Balance, end of period 4,919 3,912    
Effect of changes in our own credit risk 217 240 556 224
Balance, end of period 5,136 4,152    
Less: Reinsured MRB, end of period 0 0    
Net $ 5,136 $ 4,152    
Net amount at risk        
Average attained age of contract holders 68 years 68 years    
Individual Retirement | Combined        
Net amount at risk        
Net amount at risk $ 51 $ 57    
Individual Retirement | GMDB only        
Net amount at risk        
Net amount at risk 4 2    
Individual Retirement | GMWB only        
Net amount at risk        
Net amount at risk 625 306    
Group Retirement        
Market Risk Benefit [Roll Forward]        
Balance, beginning of year 346 278    
Effect of changes in our own credit risk (67) (72) (105) (69)
Balance, beginning of year, before effect of changes in our own credit risk 241 209    
Issuances 11 8    
Interest accrual 4 3    
Attributed fees 14 15    
Expected claims 0 0    
Effect of changes in interest rates 7 18    
Effect of changes in interest rate volatility 1 (1)    
Effect of changes in equity markets 21 25    
Effect of changes in equity index volatility 3 0    
Actual outcome different from model expected outcome (2) (20)    
Effect of changes in future expected policyholder behavior 0 1    
Effect of changes in other future expected assumptions 0 0    
Other, including foreign exchange 0 2    
Balance, end of period 300 260    
Effect of changes in our own credit risk 67 72 105 69
Balance, end of period 367 332    
Less: Reinsured MRB, end of period 0 0    
Net $ 367 $ 332    
Net amount at risk        
Average attained age of contract holders 64 years 64 years    
Group Retirement | Combined        
Net amount at risk        
Net amount at risk $ 13 $ 15    
Group Retirement | GMDB only        
Net amount at risk        
Net amount at risk 102 127    
Group Retirement | GMWB only        
Net amount at risk        
Net amount at risk 62 25    
Corporate & Other        
Market Risk Benefit [Roll Forward]        
Balance, beginning of year 349 309    
Effect of changes in our own credit risk (531) (628) (729) (587)
Balance, beginning of year, before effect of changes in our own credit risk (380) (278)    
Issuances 5 5    
Interest accrual (6) (5)    
Attributed fees 177 180    
Expected claims (16) (16)    
Effect of changes in interest rates 7 141    
Effect of changes in interest rate volatility 21 (25)    
Effect of changes in equity markets 136 148    
Effect of changes in equity index volatility (42) (41)    
Actual outcome different from model expected outcome 46 20    
Effect of changes in future expected policyholder behavior 0 0    
Effect of changes in other future expected assumptions (10) 0    
Other, including foreign exchange 0 0    
Balance, end of period (62) 129    
Effect of changes in our own credit risk 531 628 $ 729 $ 587
Balance, end of period 469 757    
Less: Reinsured MRB, end of period (1,267) (53)    
Net $ (798) $ 704    
Net amount at risk        
Average attained age of contract holders 72 years 72 years    
Corporate & Other | Combined        
Net amount at risk        
Net amount at risk $ 471 $ 560    
Corporate & Other | GMDB only        
Net amount at risk        
Net amount at risk 610 679    
Corporate & Other | GMWB only        
Net amount at risk        
Net amount at risk $ 0 $ 0