FAIR VALUE DISCLOSURES (LEVEL 3 UNOBSERVABLE INPUT RECONCILIATION) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Total Gains Losses Realized Unrealized Included In [Abstract]
Transfers into level 3			$ 6	$ 29
Transfers out of Level 3			(7)	(50)
Corporate | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	$ 1,068	$ 495	845	420
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	2	0	6	(1)
Investment Gains (Losses), Net	0	1	0	1
Subtotal	2	1	6	0
Other comprehensive income (loss)	6	(2)	0	8
Purchases	196	256	518	399
Sales	(119)	(21)	(224)	(89)
Transfers into level 3	0	11	6	29
Transfers out of Level 3	(7)	(1)	(5)	(28)
Closing Balance	1,146	739	1,146	739
State and Political Sub- divisions | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	42	45	42	45
Total Gains Losses Realized Unrealized Included In [Abstract]
Subtotal	0	0
Other comprehensive income (loss)	0	0	0	0
Sales	(1)	(1)	(1)	(1)
Closing Balance	41	44	41	44
Foreign Govts | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	0	0	0	1
Total Gains Losses Realized Unrealized Included In [Abstract]
Subtotal	0	0
Other comprehensive income (loss)			0	0
Transfers into level 3		0
Transfers out of Level 3	0	0	0	1
Closing Balance	0	0	0	0
Commercial Mortgage- backed | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	290	402	349	503
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	0	1	1	1
Investment Gains (Losses), Net	(9)	(12)	(29)	(36)
Subtotal	(9)	(11)	(28)	(35)
Other comprehensive income (loss)	8	10	27	(1)
Purchases	0	0	0
Sales	(40)	(21)	(99)	(81)
Transfers out of Level 3	(1)	(6)	(1)	(12)
Closing Balance	248	374	248	374
Asset- backed | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	12	26	24	40
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	0		15
Subtotal	0	0	15
Other comprehensive income (loss)	(3)	(1)	(10)	1
Sales	(1)	0	(20)	(7)
Transfers into level 3			0
Transfers out of Level 3	0	0	(1)	9
Closing Balance	8	25	8	25
Redeemable Preferred Stock | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	1	0	1	0
Total Gains Losses Realized Unrealized Included In [Abstract]
Subtotal	0	0
Other comprehensive income (loss)				0
Purchases			0	0
Closing Balance	1	0	1	0
Other Equity Investments | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	8	18	11	17
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)			0	0
Investment Gains (Losses), Net	(4)	0	(4)	(1)
Subtotal	(4)	0	(4)	(1)
Other comprehensive income (loss)		0	0	0
Purchases	0		5	0
Sales			(3)	0
Activity related to consolidated VIEs	0	15	(7)	17
Transfers into level 3	0		1	0
Transfers out of Level 3	0	(24)	0	(24)
Closing Balance	3	9	3	9
GMIB Reinsurance Asset | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	11,290	13,311	10,309	10,578
Total Gains Losses Realized Unrealized Included In [Abstract]
Increase (Decrease) in the Fair Value of the Reinsurance Contract Asset		(79)	537	2,576
Subtotal	(368)	(79)	537	2,576
Purchases	55	57	166	166
Sales	(44)	(176)	(79)	(207)
Closing Balance	10,933	13,113	10,933	13,113
Separate Accounts Assets | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	333	307	313	313
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)		0	0	0
Investment Gains (Losses), Net	4	7	22	19
Subtotal	4	7	22	19
Other comprehensive income (loss)			0	0
Purchases	1	3	7	12
Sales	0	0	(2)	0
Settlements	(1)	(1)	(4)	(6)
Transfers into level 3	0	0	1	1
Transfers out of Level 3	0	(1)	0	(24)
Closing Balance	337	315	337	315
GMxB derivative features liability | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	(4,606)	(7,286)	(5,289)	(5,150)
Total Gains Losses Realized Unrealized Included In [Abstract]
Subtotal	208	187	1,151	(1,712)
Purchases	23	1	(237)	(236)
Closing Balance	(4,375)	(7,098)	(4,375)	(7,098)
Contingent Payment Arrangement | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	17	31	18	31
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	0	0	0	0
Subtotal	0	0	0	0
Purchases		11	0	11
Settlements	(5)	(24)	(6)	(24)
Closing Balance	12	18	12	18
Assets and Liabilities Still Held | Corporate | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	4			9
Assets and Liabilities Still Held | State and Political Sub- divisions | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)				1
Assets and Liabilities Still Held | Commercial Mortgage- backed | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	9	10	26	(6)
Assets and Liabilities Still Held | Asset- backed | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	(2)	(1)	(9)	1
Assets and Liabilities Still Held | Fixed Maturities, Available-for-Sale [Member] | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	11	9	17	5
Assets and Liabilities Still Held | Total Debt Maturities Available For Sale | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	11	9	17	5
Assets and Liabilities Still Held | GMIB Reinsurance Asset | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	(368)
Assets and Liabilities Still Held | Separate Accounts Assets | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	$ 0	$ 0	$ 0	$ 0