EARNINGS PER SHARE

Basic EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during each period. Net income available to common stockholders represents net income after preferred stock dividends, accretion of the discount on preferred stock issuances, and gains or losses from any repurchases of preferred stock. Diluted EPS is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during each period, plus potential dilutive shares such as share-based payment awards and warrants using the treasury stock method.



	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

Potential dilutive common shares are excluded from the computation of diluted EPS in the periods where the effect would be antidilutive. The diluted EPS computation for the year ended December 31, 2017 excluded 533 average share-based awards because their inclusion would have been antidilutive. The Company did not have any antidilutive shares for the years ended December 31, 2016 and 2015.