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NET EARNINGS PER SHARE (Policies)
3 Months Ended
Mar. 31, 2013
Earnings Per Share, Basic and Diluted [Abstract]  
Earnings Per Share, Policy
We use the treasury stock method to calculate the effect of our outstanding dilutive potential common shares. Share-based payment awards that are contingently issuable upon the achievement of specified performance or market conditions are included in our diluted earnings per share calculation in the period in which the conditions are satisfied.