EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2017

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)	2017		2016		2017		2016
Numerator (basic and diluted):
Net income		$318		$243		$638		$466
Less: Preferred stock dividends	—		—		7		7
Net income available to common stockholders		$318		$243		$631		$459
Denominator:
Weighted-average common shares outstanding - basic	506,371,846		528,968,330		507,903,141		528,519,489
Dilutive common shares: share-based awards	1,042,276		1,396,873		1,458,914		1,877,382
Weighted-average common shares outstanding - diluted	507,414,122		530,365,203		509,362,055		530,396,871
Earnings per common share:
Basic		$0.63		$0.46		$1.24		$0.87
Diluted	0.63		0.46		1.24		0.87