Earnings Per Share

12 Months Ended

Dec. 31, 2012

Earnings Per Share

Note 2 – Earnings Per Share

The weighted average number of shares outstanding used to compute earnings per common share were as follows (in millions):

	2012		2011		2010
Weighted average common shares outstanding for basic computations		323.7		335.9		364.2
Weighted average dilutive effect of stock options and restricted stock units		4.7		4.0		4.1
Weighted average common shares outstanding for diluted computations		328.4		339.9		368.3

We compute basic and diluted earnings per common share by dividing net earnings by the respective weighted average number of common shares outstanding for the periods presented. Our calculation of diluted earnings per common share includes the dilutive effects for the assumed exercise of stock options and vesting of restricted stock units based on the treasury stock method.

The computation of diluted earnings per common share excluded 8.0 million, 13.4 million, and 14.7 million stock options for the years ended December 31, 2012, 2011, and 2010 because their inclusion would have been anti-dilutive, primarily due to their exercise prices exceeding the average market price of our common stock during each respective reporting period.