Earnings per share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Computation for basic and diluted earnings per share

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

	Three months ended				Six months ended
	June 30,				June 30,
	2015		2014		2015		2014
Income (Numerator):
Net income for basic and diluted EPS	$	1,653	$	1,547	$	3,276	$	2,620
Shares (Denominator):
Weighted-average shares for basic EPS	760		759		761		758
Effect of dilutive securities	8		9		8		10
Weighted-average shares for diluted EPS	768		768		769		768
Basic EPS	$	2.18	$	2.04	$	4.30	$	3.46
Diluted EPS	$	2.15	$	2.01	$	4.26	$	3.41