VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Assets:
Bonds available for sale	$ 229,391.0	$ 238,992.0
Other bond securities	11,415.0	12,772.0
Mortgage and other loans receivable	43,135.0	37,023.0
Other invested assets	19,341.0	20,822.0
Liabilities:
Long-term Debt	34,540.0	31,640.0
Real Estate and Investment Entities
Liabilities:
Off-balance sheet exposure	1,400.0	86.0
Securitization Vehicles
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	16,900.0
Consolidated VIE
Assets:
Bonds available for sale	7,662.0	9,632.0
Other bond securities	3,925.0	4,521.0
Mortgage and other loans receivable	3,693.0	2,290.0
Other invested assets	8,378.0	4,683.0
Other assets	2,625.0	2,218.0
Total assets	26,283.0	23,344.0
Liabilities:
Long-term Debt	7,569.0	4,134.0
Other liabilities	575.0	595.0
Total liabilities	8,144.0	4,729.0
Consolidated VIE | Real Estate and Investment Entities
Assets:
Bonds available for sale	0.0	0.0
Other bond securities	0.0	0.0
Mortgage and other loans receivable	0.0	0.0
Other invested assets	5,212.0	1,365.0
Other assets	580.0	302.0
Total assets	5,792.0	1,667.0
Liabilities:
Long-term Debt	2,577.0	680.0
Other liabilities	227.0	144.0
Total liabilities	2,804.0	824.0
Consolidated VIE | Securitization Vehicles
Assets:
Bonds available for sale	7,662.0	9,632.0
Other bond securities	3,923.0	4,518.0
Mortgage and other loans receivable	3,693.0	2,290.0
Other invested assets	0.0	206.0
Other assets	1,581.0	1,481.0
Total assets	16,859.0	18,127.0
Liabilities:
Long-term Debt	3,154.0	1,624.0
Other liabilities	165.0	244.0
Total liabilities	3,319.0	1,868.0
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total assets of consolidated securitization vehicles owed to Parent or its subsidiaries	16,000.0	17,600.0
Consolidated VIE | Affordable Housing Partnerships
Assets:
Bonds available for sale	0.0	0.0
Other bond securities	0.0	0.0
Mortgage and other loans receivable	0.0	0.0
Other invested assets	3,142.0	3,087.0
Other assets	394.0	350.0
Total assets	3,536.0	3,437.0
Liabilities:
Long-term Debt	1,834.0	1,825.0
Other liabilities	159.0	181.0
Total liabilities	1,993.0	2,006.0
Consolidated VIE | Other
Assets:
Bonds available for sale	0.0	0.0
Other bond securities	2.0	3.0
Mortgage and other loans receivable	0.0	0.0
Other invested assets	24.0	25.0
Other assets	70.0	85.0
Total assets	96.0	113.0
Liabilities:
Long-term Debt	4.0	5.0
Other liabilities	24.0	26.0
Total liabilities	28.0	31.0
Unconsolidated VIE
Assets:
Other invested assets	7,400.0	9,800.0
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	316,527.0	387,201.0
Maximum Exposure to Loss, On-Balance Sheet	7,711.0	10,232.0
Maximum Exposure to Loss, Off-Balance Sheet	3,723.0	3,248.0
Total maximum exposure to loss	11,434.0	13,480.0
Unconsolidated VIE | Real Estate and Investment Entities
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	309,598.0	380,030.0
Maximum Exposure to Loss, On-Balance Sheet	6,820.0	9,253.0
Maximum Exposure to Loss, Off-Balance Sheet	2,501.0	2,043.0
Total maximum exposure to loss	9,321.0	11,296.0
Unconsolidated VIE | Affordable Housing Partnerships
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	4,116.0	4,468.0
Maximum Exposure to Loss, On-Balance Sheet	607.0	725.0
Maximum Exposure to Loss, Off-Balance Sheet	0.0	0.0
Total maximum exposure to loss	607.0	725.0
Unconsolidated VIE | Other
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	2,813.0	2,703.0
Maximum Exposure to Loss, On-Balance Sheet	284.0	254.0
Maximum Exposure to Loss, Off-Balance Sheet	1,222.0	1,205.0
Total maximum exposure to loss	$ 1,506.0	$ 1,459.0