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Net Income per Share
3 Months Ended
Mar. 31, 2021
Net Income per Share [Abstract]  
Net Income per Share Net Income per Share
The computations of basic and diluted net income per share were (in millions, except per share amounts):
Three Months Ended March 31,
20212020
Net Income - Omnicom Group Inc.$287.8 $258.1 
Weighted Average Shares:  
Basic215.6 216.6 
Dilutive stock options and restricted shares1.2 0.9 
Diluted216.8 217.5 
Anti-dilutive stock options and restricted shares0.7 0.9 
Net Income per Share - Omnicom Group Inc.:  
Basic$1.33 $1.19 
Diluted$1.33 $1.19