INCOME TAXES - Net Deferred Income Taxes and Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components of Deferred Tax Assets [Abstract]
Compensation and related benefits	$ 110	$ 150
Net operating losses and credits	$ 424	512
Other		112
Total	$ 534	774
Components of Deferred Tax Liabilities [Abstract]
Reserves and reinsurance	1,740	1,785
DAC	1,253	1,162
Unrealized investment gains or losses	134	614
Investments	1,437	1,490
Other	25	0
Total	4,589	5,051
Income Tax Uncertainties [Abstract]
Undistributed earnings of foreign subsidiaries	255
Amount of additional taxes that would need to be provided if earnings were remitted	103
Unrecognized tax benefits that would impact the effective rate	344	397
Interest and penalties invluded in unrecognized tax benefits	52	77
Interest expense related to unrecognized tax benefits	(25)	(43)	$ 15
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	475	592	573
Additions for tax positions of prior years	44	56	57
Reductions for tax positions of prior years	(101)	(181)	(38)
Additions for tax positions of current year	0	8	0
Unrecognized Tax Benefits, Ending Balance	$ 418	$ 475	$ 592