Net Income per Share (Tables)

3 Months Ended

Mar. 31, 2018

Net Income per Share [Abstract]

Computations of Basic and Diluted Net Income per Share

The computations of basic and diluted net income per share for the three months ended March 31, 2018 and 2017 were (in millions, except per share amounts):

	2018		2017
Net Income Available for Common Shares:
Net income - Omnicom Group Inc.	$	264.1	$	241.8
Net income allocated to participating securities	—		(0.5		)
	$	264.1	$	241.3
Weighted Average Shares:
Basic	230.2		234.6
Dilutive stock options and restricted shares	1.3		1.9
Diluted	231.5		236.5
Anti-dilutive stock options and restricted shares	1.0		1.0
Net Income per Share - Omnicom Group Inc.:
Basic	$	1.15	$	1.03
Diluted	$	1.14	$	1.02