Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2015

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 June 30
	Second Quarter				Six Months
	2015		2014		2015		2014
	(in millions, except for per share amounts)
Basic earnings per share:
Net income	$	494	$	499	$	869	$	948
Weighted average shares outstanding		230.6		245.7		232.0		247.1
Basic earnings per share	$	2.14	$	2.03	$	3.75	$	3.84
Diluted earnings per share:
Net income	$	494	$	499	$	869	$	948
Weighted average shares outstanding		230.6		245.7		232.0		247.1
Additional shares from assumed issuance of shares under stock-based compensation awards		.4		.5		.6		.6
Weighted average shares and potential shares assumed outstanding for computing diluted earnings per share		231.0		246.2		232.6		247.7
Diluted earnings per share	$	2.14	$	2.03	$	3.74	$	3.83