Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Weighted Average Common And Common Equivalent Shares

The computation of weighted average common and common equivalent shares used in the calculation of basic and diluted earnings per share is as follows:



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2012	2011	2012	2011
Weighted average common shares outstanding used in calculating basic earnings per share	121.7	147.4	126.0	148.2
Effect of dilutive stock options	2.0	2.6	2.0	2.7
Weighted average common and common equivalent shares used in calculating diluted earnings per share	123.7	150.0	128.0	150.9

Anti-Dilutive Options Excluded From The Computation Of Diluted Earnings Per Share

A summary of anti-dilutive options excluded from the computation of diluted earnings per share follows:



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2012	2011	2012	2011
Anti-dilutive options excluded from the computation of diluted earnings per share	1.0	0.4	1.0	0.4