VARIABLE INTEREST ENTITIES (Details) - Major Types of Debt and Equity Securities [Domain] - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets:
Bonds available for sale	$ 259,821.0	$ 264,254.0
Other bond securities	16,598.0	19,712.0
Mortgage and other loans receivable	27,143.0	24,990.0
Other invested assets	29,829.0	34,518.0
Real estate and investment funds
Liabilities:
Off-balance sheet exposure	96.4	56.4
Consolidated VIE
Assets:
Bonds available for sale	11,047.0	11,494.0
Other bond securities	7,284.0	7,906.0
Mortgage and other loans receivable	2,749.0	2,560.0
Other invested assets	3,026.0	2,941.0
Other assets	1,308.0	1,752.0
Total assets	25,414.0	26,653.0
Liabilities:
Long-term debt	1,615.0	1,697.0
Other liabilities	477.0	446.0
Total liabilities	2,092.0	2,143.0
Consolidated VIE | Real estate and investment funds
Assets:
Mortgage and other loans receivable	1.0
Other invested assets	624.0	577.0
Other assets	52.0	40.0
Total assets	677.0	617.0
Liabilities:
Long-term debt	41.0	69.0
Other liabilities	48.0	32.0
Total liabilities	89.0	101.0
Consolidated VIE | Securitization vehicles
Assets:
Bonds available for sale	11,022.0	11,459.0
Other bond securities	6,751.0	7,251.0
Mortgage and other loans receivable	2,602.0	2,398.0
Other invested assets	596.0	651.0
Other assets	1,056.0	1,447.0
Total assets	22,027.0	23,206.0
Liabilities:
Long-term debt	1,246.0	1,370.0
Other liabilities	245.0	276.0
Total liabilities	1,491.0	1,646.0
Investment-grade debt securities, loans and other assets	0.0	0.0
Consolidated VIE | Structured investment vehicle
Assets:
Other bond securities	491.0	615.0
Other assets	53.0	140.0
Total assets	544.0	755.0
Liabilities:
Long-term debt	57.0	52.0
Other liabilities	0.0
Total liabilities	57.0	52.0
Consolidated VIE | Affordable housing partnerships
Assets:
Other invested assets	1,782.0	1,684.0
Other assets	57.0	49.0
Total assets	1,839.0	1,733.0
Liabilities:
Long-term debt	265.0	199.0
Other liabilities	141.0	101.0
Total liabilities	406.0	300.0
Consolidated VIE | Other
Assets:
Bonds available for sale	25.0	35.0
Other bond securities	42.0	40.0
Mortgage and other loans receivable	146.0	162.0
Other invested assets	24.0	29.0
Other assets	90.0	76.0
Total assets	327.0	342.0
Liabilities:
Long-term debt	6.0	7.0
Other liabilities	43.0	37.0
Total liabilities	49.0	44.0
Unconsolidated VIE
Assets:
Other invested assets	3,400.0	3,200.0
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	28,444.0	29,819.0
Maximum Exposure to Loss, On-Balance Sheet	3,650.0	3,514.0
Maximum Exposure to Loss, Off-Balance Sheet	1,417.0	1,446.0
Total maximum exposure to loss	5,067.0	4,960.0
Unconsolidated VIE | Real estate and investment funds
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	19,639.0	19,949.0
Maximum Exposure to Loss, On-Balance Sheet	3,022.0	2,785.0
Maximum Exposure to Loss, Off-Balance Sheet	425.0	454.0
Total maximum exposure to loss	3,447.0	3,239.0
Unconsolidated VIE | Affordable housing partnerships
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	7,694.0	7,911.0
Maximum Exposure to Loss, On-Balance Sheet	407.0	425.0
Total maximum exposure to loss	407.0	425.0
Unconsolidated VIE | Other
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	1,111.0	1,959.0
Maximum Exposure to Loss, On-Balance Sheet	221.0	304.0
Maximum Exposure to Loss, Off-Balance Sheet	992.0	992.0
Total maximum exposure to loss	$ 1,213.0	1,296.0
Unconsolidated VIE | Other | Scenario Previously Reported Member
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Maximum Exposure to Loss, On-Balance Sheet		32.0
Maximum Exposure to Loss, Off-Balance Sheet		$ 0.0