Net Income per Share (Tables)

6 Months Ended

Jun. 30, 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 and six months ended June 30, 2018 and 2017 were (in millions, except per share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net Income Available for Common Shares:
Net income - Omnicom Group Inc.	$	364.2		$	328.6		$	628.3		$	570.4
Net income allocated to participating securities	(0.1		)	(0.5		)	(0.1		)	(1.0		)
	$	364.1		$	328.1		$	628.2		$	569.4
Weighted Average Shares:
Basic	226.8			232.1			228.5			233.3
Dilutive stock options and restricted shares	1.3			1.9			1.3			1.9
Diluted	228.1			234.0			229.8			235.2
Anti-dilutive stock options and restricted shares	1.0			1.0			1.0			1.0
Net Income per Share - Omnicom Group Inc.:
Basic	$	1.61		$	1.41		$	2.75		$	2.44
Diluted	$	1.60		$	1.40		$	2.73		$	2.42