Basic and Diluted Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

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

	Three Months Ended March 31,
	2013		2012
(millions, except per share amounts)
Income from Continuing Operations	$	232	$	249
Weighted Average Number of Shares Outstanding, Basic	179		177
Incremental Shares From Assumed Conversion of Dilutive Stock Options, Restricted Stock and Shares of Common Stock in Rabbi Trust	2		3
Weighted Average Number of Shares Outstanding, Diluted	181		180
Earnings from Continuing Operations Per Share, Basic	$	1.29	$	1.40
Earnings from Continuing Operations Per Share, Diluted	1.28		1.39
Number of antidilutive stock options, shares of restricted stock and shares of common stock in rabbi trust excluded from calculation above	3		2

Retrospective Effect of Stock Split

Pro forma earnings per share and common shares outstanding, giving retrospective effect to the stock split, is as follows:

	Three Months Ended March 31,
	2013				2012
	As Reported		Pro Forma		As Reported		Pro Forma
(millions, except per share amounts)
Earnings Per Share, Basic
Income from Continuing Operations	$	1.29	$	0.65	$	1.40	$	0.70
Discontinued Operations, Net of Tax	0.17		0.08		0.08		0.04
Net Income	$	1.46	$	0.73	$	1.48	$	0.74
Earnings Per Share, Diluted
Income from Continuing Operations	$	1.28	$	0.64	$	1.39	$	0.69
Discontinued Operations, Net of Tax	0.17		0.08		0.08		0.04
Net Income	$	1.45	$	0.72	$	1.47	$	0.73
Weighted Avg Number of Shares Outstanding
Basic	179		358		177		355
Diluted	181		362		180		359