Consolidated Supplementary Insurance Information (Income Statement Items) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	$ 3,673	$ 3,575	$ 3,829
Net Investment Income (1)	4,815	3,528	3,486
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	4,499	6,750	4,569
Amortization of deferred policy acquisition costs and value of business acquired	105	696	395
Other Expenses	1,800	1,844	1,809
Annuities
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	2,335	2,179	2,291
Net Investment Income (1)	2,196	1,800	1,786
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	1,646	2,438	1,429
Amortization of deferred policy acquisition costs and value of business acquired	86	627	328
Other Expenses	1,087	1,043	1,125
Life
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	640	671	728
Net Investment Income (1)	617	402	374
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	654	831	646
Amortization of deferred policy acquisition costs and value of business acquired	8	78	53
Other Expenses	160	150	177
Run-off
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	619	642	720
Net Investment Income (1)	1,900	1,264	1,273
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	2,108	3,421	2,436
Amortization of deferred policy acquisition costs and value of business acquired	0	0	0
Other Expenses	191	185	200
Corporate and Other
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Premiums and Universal Life and Investment-Type Product Policy Fees	79	83	90
Net Investment Income (1)	102	62	53
Policyholder Benefits and Claims, and Interest Credited to Policyholder Account Balances	91	60	58
Amortization of deferred policy acquisition costs and value of business acquired	11	(9)	14
Other Expenses	$ 362	$ 466	$ 307