FAIR VALUE DISCLOSURES (LEVEL 3 UNOBSERVABLE INPUT RECONCILIATION) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Total Gains Losses Realized Unrealized Included In [Abstract]
Transfers into level 3	$ 15	$ 42
Transfers out of Level 3		(4)
Corporate | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	845	420
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	1	0
Investment Gains (Losses), Net	0	0
Subtotal	1	0
Other comprehensive income (loss)	45	10
Purchases	169	62
Sales	(57)	(36)
Transfers into level 3	11	42
Transfers out of Level 3	0	0
Closing Balance	1,014	498
State and Political Sub- divisions | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	42	45
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	0	0
Sales	0	0
Closing Balance	42	45
Foreign Govts | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	0	1
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	0	0
Transfers out of Level 3	0	1
Closing Balance	0	0
Commercial Mortgage- backed | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	349	503
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	0	0
Investment Gains (Losses), Net	31	(6)
Subtotal	31	(6)
Other comprehensive income (loss)	12	(12)
Purchases	0
Sales	(68)	(34)
Transfers out of Level 3	0	(3)
Closing Balance	324	448
Residential Mortgage- backed | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	0	0
Total Gains Losses Realized Unrealized Included In [Abstract]
Sales	0	0
Closing Balance	0	0
Asset- backed | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	24	40
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	4	0
Sales	(1)	(3)
Transfers into level 3	4
Transfers out of Level 3	0	0
Closing Balance	31	37
Redeemable Preferred Stock | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	1	0
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)		0
Purchases	0	0
Closing Balance	1	0
Other Equity Investments | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	11	17
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	0	0
Investment Gains (Losses), Net	0	0
Subtotal	0	0
Other comprehensive income (loss)	0	0
Purchases	4	2
Sales	(1)	0
Activity related to consolidated VIEs	0
Transfers into level 3	1	6
Transfers out of Level 3	0	0
Closing Balance	15	25
GMIB Reinsurance Asset | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	10,309	10,570
Total Gains Losses Realized Unrealized Included In [Abstract]
Increase (Decrease) in the Fair Value of the Reinsurance Contract Asset	(540)	1,598
Policyholders’ benefits	0
Subtotal	(540)	1,598
Purchases	40	55
Sales	(14)	(16)
Closing Balance	9,795	12,207
Separate Accounts Assets | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	313	313
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	0	0
Investment Gains (Losses), Net	10	7
Subtotal	10	7
Other comprehensive income (loss)	0	0
Purchases	3	6
Sales	(1)	0
Settlements	(1)	(3)
Transfers into level 3	1	0
Transfers out of Level 3	0	0
Closing Balance	325	323
GWBL and Other Features’ Liability | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	164	184
Total Gains Losses Realized Unrealized Included In [Abstract]
Policyholders’ benefits	(118)	30
Subtotal	(118)	30
Purchases	60	51
Closing Balance	106	265
Contingent Payment Arrangement | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening Balance	18	31
Total Gains Losses Realized Unrealized Included In [Abstract]
Net investment income (loss)	0	1
Subtotal	0	1
Purchases	0	0
Settlements	(1)	(1)
Closing Balance	17	31
Assets and Liabilities Still Held | Corporate | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	41	11
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	0
Assets and Liabilities Still Held | Commercial Mortgage- backed | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	12	(12)
Assets and Liabilities Still Held | Asset- backed | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Other comprehensive income (loss)	4	0
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)	57	(1)
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	10	7
Increase (Decrease) in the Fair Value of the Reinsurance Contract Asset	(514)	1,637
Policyholders’ benefits	(58)	81
Other comprehensive income (loss)	57	(1)
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	(514)	1,637
Assets and Liabilities Still Held | Separate Accounts Assets | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Investment Gains (Losses), Net	10	7
Assets and Liabilities Still Held | GWBL and Other Features’ Liability | Level 3
Total Gains Losses Realized Unrealized Included In [Abstract]
Policyholders’ benefits	$ (58)	$ 81