GMDB, GMIB, GIB, GWBL AND OTHER FEATURES AND NO LAPSE GUARANTEE FEATURES 4 (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Direct Liability, Gross [Roll Forward]
Balance, beginning of period	$ 8,789	$ 8,283
Balance, end of period	10,044	9,311
Direct Liability
Direct Liability, Gross [Roll Forward]
Balance, beginning of period	1,202	1,084
Other changes in reserves	120	85
Balance, end of period	1,322	1,169
Reinsurance Ceded
Reinsurance Ceded [Roll Forward]
Balance, beginning of period	(623)	(539)
Other changes in reserves	(21)	(32)
Balance, end of period	(644)	(571)
Net
Direct Liability, Net [Roll Forward]
Balance, beginning of period	579	545
Other changes in reserves	99	53
Balance, end of period	$ 678	$ 598