OTHER OPERATING EXPENSE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income and Expenses [Abstract]
Deposit insurance	$ 120	$ 115	$ 95
Promotional expense	98	101	86
Settlements and operating losses	62	43	89
Other	246	271	303
Other operating expense	$ 526	$ 530	$ 573