EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of earnings per share

	Year Ended December 31,
(in millions, except share and per-share data)	2017		2016		2015
Numerator (basic and diluted):
Net income		$1,652		$1,045		$840
Less: Preferred stock dividends	14		14		7
Net income available to common stockholders		$1,638		$1,031		$833
Denominator:
Weighted-average common shares outstanding - basic	502,157,440		522,093,545		535,599,731
Dilutive common shares: share-based awards	1,527,651		1,837,173		2,621,167
Weighted-average common shares outstanding - diluted	503,685,091		523,930,718		538,220,898
Earnings per common share:
Basic		$3.26		$1.97		$1.55
Diluted	3.25		1.97		1.55