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NET EARNINGS PER SHARE (Policies)
12 Months Ended
Dec. 31, 2012
Earnings Per Share, Basic and Diluted [Abstract]  
Earnings Per Share, Policy
“Basic earnings” per share is net earnings divided by the weighted average number of our outstanding common shares, including stock equivalent units where there is no circumstance under which those shares would not be issued.
“Diluted earnings” per share is net earnings divided by the sum of the:
weighted average number of our outstanding common shares and
the effect of our outstanding dilutive potential common shares.
Dilutive potential common shares may include:
outstanding stock options,
restricted stock units or
performance share units.
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.