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Earnings Per Share (Policies)
6 Months Ended
Jun. 30, 2011
Earnings Per Share  
Earnings per share

 

Basic earnings per share are calculated under the two-class method, which allocates earnings to each class of stock based on its dividend rights.  Class B shares are convertible into Class A shares at a conversion ratio of 2,400 to 1.  Class A diluted earnings per share are calculated under the if-converted method, which reflects the conversion of Class B shares and the effect of potentially dilutive outstanding employee stock-based awards and awards vested and not yet vested related to the outside directors’ stock compensation plan.