Earnings Per Share

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Earnings Per Share

Note 3 – Earnings Per Share

We compute basic and diluted per share amounts based on net earnings for the periods presented. We use the weighted average number of common shares outstanding during the period to calculate basic earnings per share. Our calculation of diluted per share amounts includes the dilutive effects of stock options and restricted stock units based on the treasury stock method. Basic and diluted weighted average shares outstanding were as follows:

(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

Stock options to purchase 13.4 million, 14.7 million, and 11.5 million shares of common stock outstanding at December 31, 2011, 2010, and 2009 were not included in the computation of diluted weighted average shares outstanding, as their effect would have been anti-dilutive.