v3.26.1
Related Party Transactions (Effects of Affiliated Reinsurance on Statements of Operations) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Premiums:    
Net premiums $ (6,748) $ (6,695)
Other revenues:    
Other Income 435 435
Interest Credited To Policyholder Account Balances [Abstract]    
Net interest credited to PABs 933 931
Other expenses:    
Net other expenses (1,626) (1,313)
Affiliated Entity [Member] | Assumed Reinsurance [Member]    
Premiums:    
Reinsurance assumed 2 4
Universal life and investment-type product policy fees:    
Reinsurance assumed 13 9
Other revenues:    
Reinsurance assumed 26 25
Policyholder benefits and claims:    
Reinsurance assumed 8 10
Interest Credited To Policyholder Account Balances [Abstract]    
Reinsurance assumed 82 86
Other expenses:    
Reinsurance assumed 145 11
Policyholder Liability, Change in Fair Value, Gain (Loss) 0 1
Affiliated Entity [Member] | Ceded Reinsurance [Member]    
Premiums:    
Reinsurance ceded (111) (110)
Universal life and investment-type product policy fees:    
Reinsurance ceded 1 (1)
Other revenues:    
Reinsurance ceded 112 112
Policyholder benefits and claims:    
Reinsurance ceded (91) (89)
Interest Credited To Policyholder Account Balances [Abstract]    
Reinsurance ceded (2) (2)
Other expenses:    
Reinsurance ceded (51) (21)
Policyholder Liability, Change in Fair Value, Gain (Loss) 3 1
Affiliated Entity [Member] | Reinsurance [Member]    
Premiums:    
Net premiums (109) (106)
Universal life and investment-type product policy fees:    
Insurance Commissions and Fees, Net Impact from Reinsurance 14 8
Other revenues:    
Other Income 138 137
Policyholder benefits and claims:    
Net policyholder benefits and claims (83) (79)
Interest Credited To Policyholder Account Balances [Abstract]    
Net interest credited to PABs 80 84
Other expenses:    
Net other expenses (196) (10)
Policyholder Liability, Change in Fair Value, Gain (Loss) $ 3 $ 2