VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Assets:
Bonds available for sale	$ 233,914	$ 238,992
Other bond securities	12,397	12,772
Mortgage and other loans receivable	38,540	37,023
Other invested assets	21,183	20,822
Liabilities:
Long-term Debt	33,619	31,640
Real Estate and Investment Entities
Liabilities:
Off-balance sheet exposure	133	86
Consolidated VIE
Assets:
Bonds available for sale	8,484	9,632
Other bond securities	4,352	4,521
Mortgage and other loans receivable	2,759	2,290
Other invested assets	4,953	4,683
Other assets	2,193	2,218
Total assets	22,741	23,344
Liabilities:
Long-term Debt	4,680	4,134
Other liabilities	511	595
Total liabilities	5,191	4,729
Consolidated VIE | Real Estate and Investment Entities
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Mortgage and other loans receivable	0	0
Other invested assets	1,413	1,365
Other assets	308	302
Total assets	1,721	1,667
Liabilities:
Long-term Debt	741	680
Other liabilities	135	144
Total liabilities	876	824
Consolidated VIE | Securitization Vehicles
Assets:
Bonds available for sale	8,484	9,632
Other bond securities	4,349	4,518
Mortgage and other loans receivable	2,759	2,290
Other invested assets	201	206
Other assets	1,492	1,481
Total assets	17,285	18,127
Liabilities:
Long-term Debt	1,965	1,624
Other liabilities	164	244
Total liabilities	2,129	1,868
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total assets of consolidated securitization vehicles owed to Parent or its subsidiaries	16,700	17,600
Consolidated VIE | Affordable Housing Partnerships
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Mortgage and other loans receivable	0	0
Other invested assets	3,314	3,087
Other assets	309	350
Total assets	3,623	3,437
Liabilities:
Long-term Debt	1,969	1,825
Other liabilities	187	181
Total liabilities	2,156	2,006
Consolidated VIE | Other
Assets:
Bonds available for sale	0	0
Other bond securities	3	3
Mortgage and other loans receivable	0	0
Other invested assets	25	25
Other assets	84	85
Total assets	112	113
Liabilities:
Long-term Debt	5	5
Other liabilities	25	26
Total liabilities	30	31
Unconsolidated VIE
Assets:
Other invested assets	9,600	9,800
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	378,159	387,201
Maximum Exposure to Loss, On-Balance Sheet	9,942	10,232
Maximum Exposure to Loss, Off-Balance Sheet	3,191	3,248
Total maximum exposure to loss	13,133	13,480
Unconsolidated VIE | Real Estate and Investment Entities
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	371,105	380,030
Maximum Exposure to Loss, On-Balance Sheet	9,054	9,253
Maximum Exposure to Loss, Off-Balance Sheet	1,988	2,043
Total maximum exposure to loss	11,042	11,296
Unconsolidated VIE | Affordable Housing Partnerships
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	4,146	4,468
Maximum Exposure to Loss, On-Balance Sheet	669	725
Maximum Exposure to Loss, Off-Balance Sheet	0	0
Total maximum exposure to loss	669	725
Unconsolidated VIE | Other
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	2,908	2,703
Maximum Exposure to Loss, On-Balance Sheet	219	254
Maximum Exposure to Loss, Off-Balance Sheet	1,203	1,205
Total maximum exposure to loss	$ 1,422	$ 1,459