SCHEDULE III - CONDENSED SUPPLEMENTARY INSURANCE INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA	$ 5,985	$ 5,824	$ 7,745
Future Contract Benefits	40,416	40,146	35,717
Unearned Premiums
Other Contract Holder Funds	111,174	104,858	97,422
Insurance Premiums	5,359	5,122	5,277
Net Investment Income	5,844	5,264	4,962
Benefits and Interest Credited	10,932	10,949	10,339
Amortization of DAC and VOBA	1,603	1,286	1,320
Other Operating Expenses	4,144	3,799	3,956
Premiums Written
Annuities Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA	4,140	3,939	3,973
Future Contract Benefits	4,180	4,183	3,861
Unearned Premiums
Other Contract Holder Funds	41,611	35,234	29,518
Insurance Premiums	116	121	502
Net Investment Income	1,316	1,192	1,070
Benefits and Interest Credited	991	1,026	1,327
Amortization of DAC and VOBA	436	376	427
Other Operating Expenses	1,544	1,350	1,351
Premiums Written
Retirement Plan Services Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA	159	126	181
Future Contract Benefits	15	11	9
Unearned Premiums
Other Contract Holder Funds	23,635	22,912	20,553
Net Investment Income	983	924	917
Benefits and Interest Credited	620	617	587
Amortization of DAC and VOBA	31	28	25
Other Operating Expenses	387	374	392
Premiums Written
Life Insurance Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA	1,515	1,572	3,382
Future Contract Benefits	19,929	19,621	15,714
Unearned Premiums
Other Contract Holder Funds	39,197	39,233	39,320
Insurance Premiums	783	711	661
Net Investment Income	3,056	2,689	2,494
Benefits and Interest Credited	5,309	5,668	5,231
Amortization of DAC and VOBA	1,029	768	757
Other Operating Expenses	691	690	694
Premiums Written
Group Protection Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA	171	187	209
Future Contract Benefits	6,326	5,986	5,601
Unearned Premiums
Other Contract Holder Funds	214	213	194
Insurance Premiums	4,450	4,280	4,113
Net Investment Income	365	329	306
Benefits and Interest Credited	3,896	3,505	3,041
Amortization of DAC and VOBA	107	114	111
Other Operating Expenses	1,154	1,120	1,134
Premiums Written
Other Operations [Member]
Supplementary Insurance Information, by Segment [Line Items]
Future Contract Benefits	9,966	10,345	10,532
Unearned Premiums
Other Contract Holder Funds	6,517	7,266	7,837
Insurance Premiums	10	10	1
Net Investment Income	124	130	175
Benefits and Interest Credited	116	133	153
Other Operating Expenses	368	265	385
Premiums Written