Consolidated Supplementary Insurance Information (Income Statement Items) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	$ 2,589	$ 2,517	$ 3,007
Net Investment Income (1)	4,560	4,064	4,815
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	4,219	3,499	3,728
Amortization of deferred policy acquisition costs and value of business acquired	564	568	558
Other Expenses	1,625	1,694	1,824
Annuities
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	1,499	1,418	1,785
Net Investment Income (1)	2,536	2,233	2,196
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	1,556	1,271	1,144
Amortization of deferred policy acquisition costs and value of business acquired	507	505	491
Other Expenses	997	980	1,112
Life
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	615	588	733
Net Investment Income (1)	385	391	642
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	688	847	610
Amortization of deferred policy acquisition costs and value of business acquired	57	63	67
Other Expenses	182	110	173
Run-off
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	475	511	489
Net Investment Income (1)	1,115	1,146	1,900
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	1,587	1,216	1,953
Amortization of deferred policy acquisition costs and value of business acquired	0	0	0
Other Expenses	167	292	191
Corporate & Other
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	0	0	0
Net Investment Income (1)	524	294	77
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	388	165	21
Amortization of deferred policy acquisition costs and value of business acquired	0	0	0
Other Expenses	$ 279	$ 312	$ 348