SCHEDULE IV - CONSOLIDATED REINSURANCE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated reinsurance, net [Abstract]
Premiums Earned, Net, Total	$ 5,359	$ 5,122	$ 5,277
Reinsurance Related [Member]
Consolidated reinsurance, net [Abstract]
Gross Amount	14,010	13,159	13,347
Ceded to Other Companies	2,136	2,018	1,920
Assumed from Other Companies	97	101	97
Premiums Earned, Net, Total	11,971	11,242	11,524
Gross Amount, Life Insurance in Force	1,808,596	1,611,276	1,477,684
Ceded to Other Companies, Life Insurance in Force	789,638	684,067	591,829
Assumed from Other Companies, Life Insurance in Force	10,651	11,141	11,009
Premiums, Net, Life Insurance in Force, Total	$ 1,029,609	$ 938,350	$ 896,864
Percentage of Amount Assumed to Net, Life Insurance in Force	1.00%	1.20%	1.20%
Life Insurance And Annuities [Member] | Reinsurance Related [Member]
Consolidated reinsurance, net [Abstract]
Gross Amount	$ 10,960	$ 10,329	$ 10,572
Ceded to Other Companies	2,095	1,977	1,877
Assumed from Other Companies	91	94	88
Premiums Earned, Net, Total	$ 8,956	$ 8,446	$ 8,783
Percentage of Amount Assumed to Net	1.00%	1.10%	1.00%
Accident And Health Insurance [Member] | Reinsurance Related [Member]
Consolidated reinsurance, net [Abstract]
Gross Amount	$ 3,050	$ 2,830	$ 2,774
Ceded to Other Companies	41	41	43
Assumed from Other Companies	6	7	9
Premiums Earned, Net, Total	$ 3,015	$ 2,796	$ 2,740
Percentage of Amount Assumed to Net	0.20%	0.30%	0.30%