FAIR VALUE DISCLOSURES (TEXTUAL) (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Quantitative Disclosure [Line Items]
Fixed maturities, available-for-sale	$ 33,435		$ 32,683
Fair value freestanding contract	$ 1,422		$ 51
Freestanding contract invested assets (as a percent)	47.50%		8.20%
Fair value adjustments on GMIB asset	$ 97		$ 139
Transfers out of Level 3	(7)	$ (50)
Transfers into level 3	$ 6	$ 29
Transfers out of Levels 2 and 3 to Total Equity (as a percent)	0.10%	0.50%
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Quantitative Disclosure [Line Items]
Assets measured at fair value on recurring basis (as a percent)	70.50%		71.10%
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Quantitative Disclosure [Line Items]
Assets measured at fair value on recurring basis (as a percent)	28.40%		27.90%
Mortgages and asset-backed securities owned	$ 282		$ 340
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Quantitative Disclosure [Line Items]
Assets measured at fair value on recurring basis (as a percent)	1.10%		1.00%
Mortgages and asset-backed securities owned	$ 256		$ 373
Fair value disclosures broker priced	100		111
Public Fixed Maturities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Quantitative Disclosure [Line Items]
Fixed maturities, available-for-sale	$ 25,492		$ 24,918
Available-for-sale fixed maturity assets measured at fair value on recurring basis (as a percent)	14.90%		16.00%
Private Fixed Maturities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Quantitative Disclosure [Line Items]
Fixed maturities, available-for-sale	$ 7,808		$ 7,652
Available-for-sale fixed maturity assets measured at fair value on recurring basis (as a percent)	4.60%		4.90%