VARIABLE INTEREST ENTITIES (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Assets:
Bonds available for sale	$ 264,588,000,000	$ 264,254,000,000
Other bond securities	19,013,000,000	19,712,000,000
Mortgage and other loans receivable	25,313,000,000	24,990,000,000
Other invested assets	34,838,000,000	34,518,000,000
Real estate and investment funds
Liabilities:
Off-balance sheet exposure	81,900,000	56,400,000
Consolidated VIE
Assets:
Bonds available for sale	11,423,000,000	11,494,000,000
Other bond securities	7,416,000,000	7,906,000,000
Mortgage and other loans receivable	2,514,000,000	2,560,000,000
Other invested assets	3,116,000,000	2,941,000,000
Other assets	1,608,000,000	1,752,000,000
Total assets	26,077,000,000	26,653,000,000
Liabilities:
Long-term debt	1,709,000,000	1,697,000,000
Other liabilities	458,000,000	446,000,000
Total liabilities	2,167,000,000	2,143,000,000
Consolidated VIE | Real estate and investment funds
Assets:
Other invested assets	611,000,000	577,000,000
Other assets	41,000,000	40,000,000
Total assets	652,000,000	617,000,000
Liabilities:
Long-term debt	68,000,000	69,000,000
Other liabilities	37,000,000	32,000,000
Total liabilities	105,000,000	101,000,000
Consolidated VIE | Securitization vehicles
Assets:
Bonds available for sale	11,389,000,000	11,459,000,000
Other bond securities	6,850,000,000	7,251,000,000
Mortgage and other loans receivable	2,359,000,000	2,398,000,000
Other invested assets	632,000,000	651,000,000
Other assets	1,298,000,000	1,447,000,000
Total assets	22,528,000,000	23,206,000,000
Liabilities:
Long-term debt	1,318,000,000	1,370,000,000
Other liabilities	247,000,000	276,000,000
Total liabilities	1,565,000,000	1,646,000,000
Investment-grade debt securities, loans and other assets	0	0
Consolidated VIE | Structured investment vehicle
Assets:
Other bond securities	528,000,000	615,000,000
Other assets	142,000,000	140,000,000
Total assets	670,000,000	755,000,000
Liabilities:
Long-term debt	52,000,000	52,000,000
Other liabilities	1,000,000
Total liabilities	53,000,000	52,000,000
Consolidated VIE | Affordable housing partnerships
Assets:
Other invested assets	1,846,000,000	1,684,000,000
Other assets	57,000,000	49,000,000
Total assets	1,903,000,000	1,733,000,000
Liabilities:
Long-term debt	265,000,000	199,000,000
Other liabilities	140,000,000	101,000,000
Total liabilities	405,000,000	300,000,000
Consolidated VIE | Other
Assets:
Bonds available for sale	34,000,000	35,000,000
Other bond securities	38,000,000	40,000,000
Mortgage and other loans receivable	155,000,000	162,000,000
Other invested assets	27,000,000	29,000,000
Other assets	70,000,000	76,000,000
Total assets	324,000,000	342,000,000
Liabilities:
Long-term debt	6,000,000	7,000,000
Other liabilities	33,000,000	37,000,000
Total liabilities	39,000,000	44,000,000
Unconsolidated VIE
Assets:
Other invested assets	3,200,000,000	3,200,000,000
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	27,485,000,000	28,477,000,000
Maximum Exposure to Loss, On-Balance Sheet	3,236,000,000	3,242,000,000
Maximum Exposure to Loss, Off-Balance Sheet	433,000,000	454,000,000
Total maximum exposure to loss	3,669,000,000	3,696,000,000
Unconsolidated VIE | Real estate and investment funds
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	19,342,000,000	19,949,000,000
Maximum Exposure to Loss, On-Balance Sheet	2,817,000,000	2,785,000,000
Maximum Exposure to Loss, Off-Balance Sheet	433,000,000	454,000,000
Total maximum exposure to loss	3,250,000,000	3,239,000,000
Unconsolidated VIE | Affordable housing partnerships
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	7,760,000,000	7,911,000,000
Maximum Exposure to Loss, On-Balance Sheet	405,000,000	425,000,000
Total maximum exposure to loss	405,000,000	425,000,000
Unconsolidated VIE | Other
Total assets of unconsolidated VIEs as well as maximum exposure to loss
Total VIE Assets	383,000,000	617,000,000
Maximum Exposure to Loss, On-Balance Sheet	14,000,000	32,000,000
Total maximum exposure to loss	$ 14,000,000	$ 32,000,000