Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Reconciliation of weighted average shares for the basic and diluted shares computations

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Weighted average shares outstanding for basic net earnings per share		187.7		198.7		190.6		201.2
Effect of dilutive stock options and other equity awards		1.1		1.0		1.2		1.1
Weighted average shares outstanding for diluted net earnings per share		188.8		199.7		191.8		202.3