v3.26.1
Policyholders' Account Balances (Additional Insurance Reserves) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Individual Life | Variable Universal Life    
Policyholder Account Balance [Line Items]    
Balance, beginning of period $ 3,809 $ 3,389
Unearned revenue 150 147
Amortization expense (46) (46)
Other adjustments 0 0
FX adjustment 0 0
Balance, end of period 3,913 3,490
U.S. Legacy Products | Guaranteed Universal Life    
Policyholder Account Balance [Line Items]    
Balance, beginning of period 2,047 1,856
Unearned revenue 61 68
Amortization expense (21) (18)
Other adjustments 0 0
FX adjustment 0 0
Balance, end of period 2,087 1,906
International Businesses    
Policyholder Account Balance [Line Items]    
Balance, beginning of period 666 505
Unearned revenue 47 50
Amortization expense (9) (7)
Other adjustments 0 0
FX adjustment (7) 17
Balance, end of period 697 565
Total    
Policyholder Account Balance [Line Items]    
Balance, beginning of period 6,522 5,750
Unearned revenue 258 265
Amortization expense (76) (71)
Other adjustments 0 0
FX adjustment (7) 17
Balance, end of period 6,697 5,961
Other Businesses    
Policyholder Account Balance [Line Items]    
Balance, end of period 72 62
Total, including Other Businesses    
Policyholder Account Balance [Line Items]    
Balance, end of period $ 6,769 $ 6,023