Consolidated Reinsurance (Consolidated Reinsurance) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Direct Premiums, Life Insurance in Force	$ 5,273,869	$ 5,222,988	$ 5,100,675
Ceded Premiums, Life Insurance in Force	394,023	442,381	488,958
Assumed Premiums, Life Insurance in Force	662,901	597,903	623,662
Premiums, Net, Life Insurance in Force	$ 5,542,747	$ 5,378,510	$ 5,235,379
Life Insurance in Force Premiums, Percentage Assumed to Net	12.00%	11.10%	11.90%
Consolidated Reinsurance
Gross Amount	$ 41,259	$ 42,201	$ 42,513
Ceded	2,157	2,199	2,298
Assumed	2,907	2,032	2,020
Premiums	$ 42,009	$ 42,034	$ 42,235
% Amount Assumed to Net	6.90%	4.80%	4.80%
Life insurance (1)
Consolidated Reinsurance
Gross Amount	$ 23,597	$ 23,629	$ 23,938
Ceded	1,490	1,620	1,704
Assumed	2,346	1,809	1,794
Premiums	$ 24,453	$ 23,818	$ 24,028
% Amount Assumed to Net	9.60%	7.60%	7.50%
Accident & health insurance
Consolidated Reinsurance
Gross Amount	$ 16,752	$ 14,958	$ 14,835
Ceded	639	516	523
Assumed	553	208	207
Premiums	$ 16,666	$ 14,650	$ 14,519
% Amount Assumed to Net	3.30%	1.40%	1.40%
Property and casualty insurance
Consolidated Reinsurance
Gross Amount	$ 910	$ 3,614	$ 3,740
Ceded	28	63	71
Assumed	8	15	19
Premiums	$ 890	$ 3,566	$ 3,688
% Amount Assumed to Net	0.90%	0.40%	0.50%