v3.26.1
Related Party Transactions (Effects of Affiliated Reinsurance on Statements of Operations) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Premiums:        
Net premiums $ (6,416) $ (6,638) $ (13,164) $ (13,333)
Other revenues:        
Other Income 447 421 882 856
Interest Credited To Policyholder Account Balances [Abstract]        
Net interest credited to PABs 951 941 1,884 1,872
Other expenses:        
Net other expenses 1,509 1,340 3,135 2,653
Affiliated Entity [Member] | Assumed Reinsurance [Member]        
Premiums:        
Reinsurance assumed (2) (1) (4) (3)
Universal life and investment-type product policy fees:        
Reinsurance assumed 12 6 25 15
Other revenues:        
Reinsurance assumed 26 30 52 55
Policyholder benefits and claims:        
Reinsurance assumed 5 8 13 18
Interest Credited To Policyholder Account Balances [Abstract]        
Reinsurance assumed 81 84 163 170
Other expenses:        
Reinsurance assumed 25 12 170 23
Policyholder Liability, Change in Fair Value, Gain (Loss) 2 2 2 3
Affiliated Entity [Member] | Ceded Reinsurance [Member]        
Premiums:        
Reinsurance ceded (112) (108) (223) (218)
Universal life and investment-type product policy fees:        
Reinsurance ceded 0 0 1 (1)
Other revenues:        
Reinsurance ceded 112 114 224 226
Policyholder benefits and claims:        
Reinsurance ceded (89) (86) (180) (175)
Interest Credited To Policyholder Account Balances [Abstract]        
Reinsurance ceded (3) (3) (5) (5)
Other expenses:        
Reinsurance ceded 57 51 108 30
Policyholder Liability, Change in Fair Value, Gain (Loss) 0 1 3 0
Affiliated Entity [Member] | Reinsurance [Member]        
Premiums:        
Net premiums (110) (109) (219) (215)
Universal life and investment-type product policy fees:        
Insurance Commissions and Fees, Net Impact from Reinsurance 12 6 26 14
Other revenues:        
Other Income 138 144 276 281
Policyholder benefits and claims:        
Net policyholder benefits and claims (84) (78) (167) (157)
Interest Credited To Policyholder Account Balances [Abstract]        
Net interest credited to PABs 78 81 158 165
Other expenses:        
Net other expenses 82 63 278 53
Policyholder Liability, Change in Fair Value, Gain (Loss) $ 2 $ 1 $ 1 $ 3