VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets:
Bonds available for sale	$ 241,776	$ 251,086
Other bond securities	5,353	6,682
Mortgage and other loans receivable	46,844	46,984
Other invested assets	17,966	18,792
Total assets	510,477	525,064
Liabilities:
Long-term debt	25,268	25,479
Total liabilities	448,634	457,637
Assets held-for-sale
Assets:
Bonds available for sale	2,308	2,187
Other bond securities	13	13
Other invested assets	58	45
Real Estate and Investment Entities
Liabilities:
Off-balance sheet exposure	2,400	2,600
Consolidated VIE
Assets:
Bonds available for sale	6,511	7,416
Other bond securities	2,267	3,325
Mortgage and other loans receivable	4,025	3,860
Other invested assets	8,857	8,737
Other assets	2,940	3,122
Total assets	24,600	26,460
Liabilities:
Long-term debt	9,514	9,244
Other liabilities	595	814
Total liabilities	10,109	10,058
Consolidated VIE | Real Estate and Investment Entities
Assets:
Bonds available for sale	256	177
Other bond securities	0	0
Mortgage and other loans receivable	0	0
Other invested assets	5,180	5,231
Other assets	500	615
Total assets	5,936	6,023
Liabilities:
Long-term debt	2,794	2,810
Other liabilities	184	236
Total liabilities	2,978	3,046
Consolidated VIE | Securitization Vehicles
Assets:
Bonds available for sale	6,255	7,239
Other bond securities	2,266	3,324
Mortgage and other loans receivable	4,025	3,860
Other invested assets	0	0
Other assets	1,915	1,996
Total assets	14,461	16,419
Liabilities:
Long-term debt	4,515	4,356
Other liabilities	193	359
Total liabilities	4,708	4,715
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total assets contributed into consolidated securitization vehicles	13,700	15,600
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	3,635	3,464
Other assets	483	469
Total assets	4,118	3,933
Liabilities:
Long-term debt	2,201	2,074
Other liabilities	195	195
Total liabilities	2,396	2,269
Consolidated VIE | Other
Assets:
Bonds available for sale	0	0
Other bond securities	1	1
Mortgage and other loans receivable	0	0
Other invested assets	42	42
Other assets	42	42
Total assets	85	85
Liabilities:
Long-term debt	4	4
Other liabilities	23	24
Total liabilities	27	28
Unconsolidated VIE
Assets:
Other invested assets	6,400	7,000
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	296,709	292,020
Maximum Exposure to Loss, On-Balance Sheet	6,565	7,282
Maximum Exposure to Loss, Off-Balance Sheet	4,107	3,847
Total maximum exposure to loss	10,672	11,129
Unconsolidated VIE | Real Estate and Investment Entities
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	288,131	283,349
Maximum Exposure to Loss, On-Balance Sheet	5,810	6,519
Maximum Exposure to Loss, Off-Balance Sheet	3,546	3,286
Total maximum exposure to loss	9,356	9,805
Unconsolidated VIE | Affordable Housing Partnerships
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	3,064	3,351
Maximum Exposure to Loss, On-Balance Sheet	397	453
Maximum Exposure to Loss, Off-Balance Sheet	0	0
Total maximum exposure to loss	397	453
Unconsolidated VIE | Other
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	5,514	5,320
Maximum Exposure to Loss, On-Balance Sheet	358	310
Maximum Exposure to Loss, Off-Balance Sheet	561	561
Total maximum exposure to loss	$ 919	$ 871