Earnings per share

6 Months Ended

Jun. 30, 2018

The computation of basic earnings per share (EPS) is based on the weighted-average number of our common shares outstanding. The computation of diluted EPS is based on the weighted-average number of our common shares outstanding and dilutive potential common shares, which include primarily shares that may be issued under our stock option, restricted stock and performance unit award programs, as determined by using the treasury stock method (collectively, dilutive securities).

The computations for basic and diluted EPS were as follows (in millions, except per-share data):



	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Income (Numerator):
Net income for basic and diluted EPS	$	2,296	$	2,151	$	4,607	$	4,222

Shares (Denominator):
Weighted-average shares for basic EPS	656		734		682		736
Effect of dilutive securities	4		4		3		4
Weighted-average shares for diluted EPS	660		738		685		740

Basic EPS	$	3.50	$	2.93	$	6.76	$	5.74
Diluted EPS	$	3.48	$	2.91	$	6.73	$	5.71

For the three and six months ended June 30, 2018 and 2017, the number of anti-dilutive employee stock-based awards excluded from the computation of diluted EPS was not significant.