SCHEDULE III - CONDENSED SUPPLEMENTARY INSURANCE INFORMATION (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		$ 10,264	$ 8,403	$ 9,134
Future Contract Benefits		34,648	22,887	21,576
Unearned Premiums	[1]
Other Contract Holder Funds		91,233	80,209	78,903
Insurance Premiums		4,601	3,256	2,987
Net Investment Income		5,085	4,990	4,874
Benefits and Interest Credited		9,403	7,750	7,256
Amortization of DAC and VOBA		1,204	1,004	1,276
Other Operating Expenses		3,955	3,468	3,403
Premiums Written
Annuities Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		3,660	3,583	3,597
Future Contract Benefits		3,509	1,943	2,485
Unearned Premiums	[1]
Other Contract Holder Funds		23,493	21,713	21,202
Insurance Premiums		390	475	331
Net Investment Income		1,005	1,038	1,033
Benefits and Interest Credited		1,465	1,084	1,130
Amortization of DAC and VOBA		373	430	388
Other Operating Expenses		1,428	1,397	1,296
Premiums Written
Retirement Plan Services Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		243	194	201
Future Contract Benefits		8	4	4
Unearned Premiums	[1]
Other Contract Holder Funds		19,761	18,719	17,878
Net Investment Income		899	899	859
Benefits and Interest Credited		557	538	515
Amortization of DAC and VOBA		28	27	28
Other Operating Expenses		393	396	386
Premiums Written
Life Insurance Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		6,151	4,446	5,145
Future Contract Benefits		13,139	12,658	11,400
Unearned Premiums	[1]
Other Contract Holder Funds		40,997	39,459	39,332
Insurance Premiums		817	773	703
Net Investment Income		2,697	2,643	2,562
Benefits and Interest Credited		4,759	4,593	4,071
Amortization of DAC and VOBA		711	468	734
Other Operating Expenses		660	721	688
Premiums Written
Group Protection Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		210	180	191
Future Contract Benefits		5,396	2,262	2,280
Unearned Premiums	[1]
Other Contract Holder Funds		197	161	168
Insurance Premiums		3,383	1,998	1,939
Net Investment Income		260	168	176
Benefits and Interest Credited		2,460	1,353	1,324
Amortization of DAC and VOBA		92	79	126
Other Operating Expenses		967	611	580
Premiums Written
Other Operations [Member]
Supplementary Insurance Information, by Segment [Line Items]
Future Contract Benefits		12,596	6,020	5,407
Unearned Premiums	[1]
Other Contract Holder Funds		6,785	157	323
Insurance Premiums		11	10	14
Net Investment Income		224	242	244
Benefits and Interest Credited		162	182	216
Other Operating Expenses		507	343	453
Premiums Written

[1] Unearned premiums are included in Column C, future contract benefits.