Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:

	Periods Ended September 30
	Third Quarter				Nine Months
	2013		2012		2013		2012
	(in millions, except for per share amounts)
Basic earnings per share:
Net income	$	541	$	533	$	1,776	$	1,443
Weighted average shares outstanding		256.0		267.3		259.9		271.0
Basic earnings per share	$	2.11	$	1.99	$	6.83	$	5.32
Diluted earnings per share:
Net income	$	541	$	533	$	1,776	$	1,443
Weighted average shares outstanding		256.0		267.3		259.9		271.0
Additional shares from assumed issuance of shares under stock- based compensation awards		1.1		1.9		1.2		1.9
Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share		257.1		269.2		261.1		272.9
Diluted earnings per share	$	2.10	$	1.98	$	6.80	$	5.29