Net Income per Share (Tables)

12 Months Ended

Dec. 31, 2021

Net Income per Share [Abstract]

Computations of Basic and Diluted Net Income per Share

The computations of basic and diluted net income per share were (in millions, except per share amounts):

	Year Ended December 31,
	2021		2020		2019
Net income available for common shares:
Net income - Omnicom Group Inc.	$	1,407.8	$	945.4	$	1,339.1
Weighted average shares:
Basic	214.3		215.6		219.8
Dilutive stock options and restricted shares	1.3		0.6		1.1
Diluted	215.6		216.2		220.9
Anti-dilutive stock options and restricted shares	4.7		0.8		0.9
Net income per share - Omnicom Group Inc.:
Basic	$6.57		$4.38		$6.09
Diluted	$6.53		$4.37		$6.06