Net Income Per Common Share
 3 Months Ended
Mar. 31, 2015
Net Income per Common Share [Abstract]  
Net Income per Common Share
Net Income per Common Share

The computation of basic and diluted net income per common share for the three months ended March 31, 2015 and 2014 was (in millions, except per share amounts):
 
2015
 
2014
Net Income Available for Common Shares:
 
 
 
Net income - Omnicom Group Inc.
$
209.1

 
$
205.5

Net income allocated to participating securities
(2.8
)
 
(4.1
)
 
$
206.3

 
$
201.4

Weighted Average Shares:
 
 
 
Basic
246.4

 
259.1

Dilutive stock options and restricted shares
1.0

 
2.3

Diluted
247.4

 
261.4

 
 
 
 
Anti-dilutive stock options and restricted shares
0.1

 
0.1

 
 
 
 
Net Income per Common Share - Omnicom Group Inc.:
 
 
 
Basic
$
0.84

 
$
0.78

Diluted
$
0.83

 
$
0.77