INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
U.S. federal	$ 292	$ 162	$ 224
State and local	44	12	38
Total	336	174	262
Deferred
U.S. federal	159	225	145
State and local	(6)	24	(4)
Total	153	249	141
U.S. federal	451	387	369
State and local	38	36	34
Income tax expense (benefit)	$ 489	$ 423	$ 403