INVESTMENTS (CREDIT LOSS IMPAIRMENTS) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Proceeds from sales, gross gains (losses) from sales and OTTI for AFS fixed maturities
Fixed maturities, available for sale	$ 1,287	$ 1,080	$ 1,822	$ 2,866
Gross gains on sales	5	9	34	94
Gross losses on sales	(2)	(1)	(29)	(47)
Total other-than-temporary impairment losses	0	(10)	(13)	(35)
Portion of loss recognized in other comprehensive income (loss)	0	0	0	0
Net impairment losses recognized	0	(10)	(13)	(35)
Fixed Maturities - Credit Loss Impairments
Balances at beginning of period	(115)	(166)	(190)	(198)
Previously recognized impairments on securities that matured, paid, prepaid or sold	32	8	(120)	(65)
Recognized impairments on securities impaired to fair value this period	0	0	0	(17)
Impairments recognized this period on securities not previously impaired	0	(8)	(13)	(16)
Additional impairments this period on securities previously impaired	0	(2)	0	(2)
Increases due to passage of time on previously recorded credit losses	0	0	0	0
Accretion of previously recognized impairments due to increases in expected cash flows	0	0	0	0
Balances at end of period	$ (83)	$ (168)	$ (83)	$ (168)