Consolidated Reinsurance (Consolidated Reinsurance) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Direct Premiums, Life Insurance in Force	$ 5,371,318	$ 5,273,869	$ 5,222,988
Ceded Premiums, Life Insurance in Force	390,521	394,023	442,381
Assumed Premiums, Life Insurance in Force	647,646	662,901	597,903
Premiums, Net, Life Insurance in Force	$ 5,628,443	$ 5,542,747	$ 5,378,510
Life Insurance in Force Premiums, Percentage Assumed to Net	11.50%	12.00%	11.10%
Consolidated Reinsurance
Gross Amount	$ 48,503	$ 41,259	$ 42,201
Ceded	2,143	2,157	2,199
Assumed	3,037	2,907	2,032
Premiums	$ 49,397	$ 42,009	$ 42,034
% Amount Assumed to Net	6.10%	6.90%	4.80%
Life insurance (1)
Consolidated Reinsurance
Gross Amount	$ 31,656	$ 23,597	$ 23,629
Ceded	1,422	1,490	1,620
Assumed	2,518	2,346	1,809
Premiums	$ 32,752	$ 24,453	$ 23,818
% Amount Assumed to Net	7.70%	9.60%	7.60%
Accident & health insurance
Consolidated Reinsurance
Gross Amount	$ 16,801	$ 16,752	$ 14,958
Ceded	715	639	516
Assumed	519	553	208
Premiums	$ 16,605	$ 16,666	$ 14,650
% Amount Assumed to Net	3.10%	3.30%	1.40%
Property and casualty insurance
Consolidated Reinsurance
Gross Amount	$ 46	$ 910	$ 3,614
Ceded	6	28	63
Assumed	0	8	15
Premiums	$ 40	$ 890	$ 3,566
% Amount Assumed to Net	0.00%	0.90%	0.40%