Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Schedule Of Basic And Diluted Weighted Average Shares Outstanding

(In millions)	2011		2010		2009
Average number of common shares outstanding for basic computations		335.9		364.2		384.8
Dilutive stock options and restricted stock units		4.0		4.1		4.1
Average number of common shares outstanding for diluted computations		339.9		368.3		388.9