INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense	$ 130	$ 115	$ 357	$ 313
Effective income tax rate	30.50%	34.10%	31.90%	33.50%
Federal income tax rate			35.00%	35.00%
Deferred taxes, net	$ 994		$ 994		$ 730