v3.26.1
Separate Accounts - Separate Account Liabilities (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Separate Account, Liability [Roll Forward]    
Balance at January 1 $ 113,007  
Net transfers (from) to separate accounts (139) $ (884)
Balance at end of period 108,467 113,007
Retirement Deferred Group and Individual Annuity    
Separate Account, Liability [Roll Forward]    
Balance at January 1 108,304 97,657
Premiums and deposits 3,144 11,721
Fee income (140) (545)
Surrenders, withdrawals and benefits (4,139) (13,784)
Net transfers (from) to separate accounts (372) (1,574)
Investment performance (2,738) 14,829
Balance at end of period 104,059 108,304
Other    
Separate Account, Liability [Roll Forward]    
Balance at January 1 4,703  
Balance at end of period 4,408 4,703
Wealth Solutions Stabilizer | Retirement Deferred Group and Individual Annuity    
Separate Account, Liability [Roll Forward]    
Balance at January 1 7,159 6,901
Premiums and deposits 233 963
Fee income (8) (31)
Surrenders, withdrawals and benefits 328 1,205
Net transfers (from) to separate accounts 0 0
Investment performance 11 531
Balance at end of period 7,067 7,159
Deferred Variable Annuity | Retirement Deferred Group and Individual Annuity    
Separate Account, Liability [Roll Forward]    
Balance at January 1 101,145 90,756
Premiums and deposits 2,911 10,758
Fee income (132) (514)
Surrenders, withdrawals and benefits 3,811 12,579
Net transfers (from) to separate accounts (372) (1,574)
Investment performance (2,749) 14,298
Balance at end of period $ 96,992 $ 101,145