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		$ 10,308	$ 8,408	$ 9,143
Future Contract Benefits		33,884	22,063	20,681
Unearned Premiums	[1]
Other Contract Holder Funds		90,573	79,481	78,106
Insurance Premiums	[2]	4,362	3,018	2,579
Net Investment Income		4,844	4,760	4,631
Benefits and Interest Credited		8,733	7,376	6,774
Amortization of DAC and VOBA		1,167	962	1,172
Other Operating Expenses		3,629	3,174	2,957
Premiums Written
Annuities Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		3,915	3,806	3,836
Future Contract Benefits		3,508	1,942	2,485
Unearned Premiums	[1]
Other Contract Holder Funds		23,525	21,739	21,227
Insurance Premiums	[2]	390	475	162
Net Investment Income		947	982	983
Benefits and Interest Credited		1,053	1,077	972
Amortization of DAC and VOBA		347	402	310
Other Operating Expenses		1,316	1,285	1,196
Premiums Written
Retirement Plan Services Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		247	197	203
Future Contract Benefits		8	4	4
Unearned Premiums	[1]
Other Contract Holder Funds		19,761	18,719	17,878
Insurance Premiums	[2]			(6)
Net Investment Income		892	893	855
Benefits and Interest Credited		556	539	514
Amortization of DAC and VOBA		27	26	27
Other Operating Expenses		393	395	387
Premiums Written
Life Insurance Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
DAC and VOBA		5,936	4,225	4,913
Future Contract Benefits		12,553	12,023	10,697
Unearned Premiums	[1]
Other Contract Holder Funds		40,305	38,705	38,510
Insurance Premiums	[2]	589	546	481
Net Investment Income		2,546	2,496	2,403
Benefits and Interest Credited		4,509	4,242	3,774
Amortization of DAC and VOBA		701	455	709
Other Operating Expenses		633	678	642
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	[2]	3,383	1,998	1,940
Net Investment Income		259	167	176
Benefits and Interest Credited		2,460	1,352	1,324
Amortization of DAC and VOBA		92	79	126
Other Operating Expenses		968	611	579
Premiums Written
Other Operations [Member]
Supplementary Insurance Information, by Segment [Line Items]
Future Contract Benefits		12,419	5,832	5,215
Unearned Premiums	[1]
Other Contract Holder Funds		6,785	157	323
Insurance Premiums	[2]		(1)	2
Net Investment Income		200	222	214
Benefits and Interest Credited		155	166	190
Other Operating Expenses		319	205	153
Premiums Written

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

[2] Includes amounts ceded to LNBAR.