FAIR VALUE DISCLOSURES (LEVEL 3 UNOBSERVABLE INPUT RECONCILIATION) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Total Gains Losses Realized Unrealized Included In [Abstract]
Transfers into level 3			$ 13	$ 19
Transfers out of Level 3			(6)	(43)
Corporate | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	$ 1,014	$ 498	845	420
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	3	0	4	(1)
Investment Gains (Losses), Net	0	1	0	0
Subtotal	3	1	4	(1)
Other comprehensive income (loss)	(51)	(1)	(6)	8
Purchases	169	97	322	150
Sales	(39)	(58)	(105)	(72)
Transfers into level 3	6	3	13	17
Transfers out of Level 3	(34)	(45)	(5)	(27)
Closing Balance	1,068	495	1,068	495
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	1	0	1
Sales	0	(1)	0	(1)
Closing Balance	42	45	42	45
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	324	448	349	503
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	1	0	1	0
Investment Gains (Losses), Net	(9)	(18)	(20)	(24)
Subtotal	(8)	(18)	(19)	(24)
Other comprehensive income (loss)	7	1	19	(11)
Purchases	0	0	0
Sales	(33)	(27)	(59)	(60)
Transfers out of Level 3	0	(2)	0	(6)
Closing Balance	290	402	290	402
Asset- backed | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	31	37	24	40
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	15		15
Subtotal	15	0	15
Other comprehensive income (loss)	(11)	2	(7)	2
Sales	(18)	(4)	(19)	(7)
Transfers into level 3			0
Transfers out of Level 3	(5)	9	(1)	9
Closing Balance	12	26	12	26
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	15	25	11	17
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)			0	0
Investment Gains (Losses), Net	0	(1)	0	(1)
Subtotal	0	(1)	0	(1)
Other comprehensive income (loss)		0	0	0
Purchases	0		4	0
Sales			(1)	0
Activity related to consolidated VIEs	(7)		(7)
Transfers into level 3	0		1	2
Transfers out of Level 3	0	(6)	0	0
Closing Balance	8	18	8	18
GMIB Reinsurance Asset | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	9,795	12,207	10,309	10,570
Total Gains Losses Realized Unrealized Included In [Abstract]
Increase (Decrease) in the Fair Value of the Reinsurance Contract Asset	1,446	1,065	906	2,662
Policyholders’ benefits			0
Subtotal	1,446	1,065	906	2,662
Purchases	70	55	110	110
Sales	(21)	(16)	(35)	(31)
Closing Balance	11,290	13,311	11,290	13,311
Separate Accounts Assets | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	325	323	313	313
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)		0	0	0
Investment Gains (Losses), Net	8	5	18	13
Subtotal	8	5	18	13
Other comprehensive income (loss)			0	0
Purchases	2	10	6	10
Sales	(1)	(1)	(2)	(1)
Settlements	(1)	(1)	(2)	(2)
Transfers into level 3	0	1	0	1
Transfers out of Level 3	0	(30)	0	(27)
Closing Balance	333	307	333	307
GWBL and Other Features’ Liability | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	106	265	164	184
Total Gains Losses Realized Unrealized Included In [Abstract]
Policyholders’ benefits	(48)	10	(166)	40
Subtotal	(48)	10	(166)	40
Purchases	63	55	123	106
Closing Balance	121	330	121	330
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	1	0	1
Subtotal	0	1	0	1
Purchases		0	0	0
Settlements	0	(1)	(1)	(1)
Closing Balance	17	31	17	31
Assets and Liabilities Still Held | Corporate | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	(45)	(2)	(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)	0	1	0	1
Assets and Liabilities Still Held | Commercial Mortgage- backed | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	5	(4)	17	(16)
Assets and Liabilities Still Held | Asset- backed | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	(11)	2	(7)	2
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)	(51)	(3)	6	(4)
Assets and Liabilities Still Held | Total Debt Maturities Available For Sale | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	8	6	18	13
Increase (Decrease) in the Fair Value of the Reinsurance Contract Asset	1,495	1,104	981	2,733
Policyholders’ benefits	15	65	(43)	146
Other comprehensive income (loss)	(51)	(3)	6	(4)
Assets and Liabilities Still Held | GMIB Reinsurance Asset | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Increase (Decrease) in the Fair Value of the Reinsurance Contract Asset	1,495	1,104	981	2,733
Assets and Liabilities Still Held | Separate Accounts Assets | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	8	6	18	13
Assets and Liabilities Still Held | GWBL and Other Features’ Liability | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Policyholders’ benefits	$ 15	$ 65	$ (43)	$ 146