EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of earnings per share

	Three Months Ended June 30,				Six Months Ended June 30,
(in millions, except share and per-share data)	2018		2017		2018		2017
Numerator (basic and diluted):
Net income		$425		$318		$813		$638
Less: Preferred stock dividends	—		—		7		7
Net income available to common stockholders		$425		$318		$806		$631
Denominator:
Weighted-average common shares outstanding - basic	484,744,354		506,371,846		486,114,872		507,903,141
Dilutive common shares: share-based awards	1,397,341		1,042,276		1,568,344		1,458,914
Weighted-average common shares outstanding - diluted	486,141,695		507,414,122		487,683,216		509,362,055
Earnings per common share:
Basic		$0.88		$0.63		$1.66		$1.24
Diluted	0.88		0.63		1.65		1.24