Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings (Loss) Per Share

The following table summarizes the calculation of basic and diluted earnings per share:

	Year Ended December 31,
(millions, except per share amounts)	2013		2012		2011
Income from Continuing Operations Used for Diluted Earnings Per Share Calculation	$	907	$	965	$	412
Weighted Average Number of Shares Outstanding, Basic	359		356		353
Incremental Shares From Assumed Conversion of Dilutive Stock Options and Restricted Stock	4		3		4
Weighted Average Number of Shares Outstanding, Diluted	363		359		357
Earnings from Continuing Operations Per Share, Basic	$	2.53	$	2.71	$	1.17
Earnings from Continuing Operations Per Share, Diluted	2.50		2.68		1.15
Additional Information
Number of antidilutive stock options, shares of restricted stock and shares of common stock in rabbi trust excluded from calculation above	3		5		4
Weighted average option exercise price per share	$	53.40	$	48.73	$	42.70