v3.26.1
Future Policy Benefits - Income statement information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums $ 543 $ 1,040
Interest accretion 650 596
Universal Life    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 269 285
Interest accretion 42 40
Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 15 17
Interest accretion 13 12
Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 1 4
Interest accretion 4 4
Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 449 455
Interest accretion 111 111
Life Insurance | Universal Life    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 259 276
Interest accretion 41 39
Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 23 509
Interest accretion 296 238
Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 55 55
Interest accretion 226 231
Corporate & Other | Universal Life    
Liability for Future Policy Benefit, Activity [Line Items]    
Gross premiums 10 9
Interest accretion $ 1 $ 1