Net Income per Share (Tables)

12 Months Ended

Dec. 31, 2024

Net Income per Share [Abstract]

Basic and Diluted Net Income per Share

Basic and diluted net income per share:

	Year Ended December 31,
	2024		2023		2022
Net income - Omnicom Group Inc.	$	1,480.6	$	1,391.4	$	1,316.5
Weighted average shares (millions):
Basic	196.4		199.4		205.6
Dilutive stock options and restricted shares	2.2		2.0		1.4
Diluted	198.6		201.4		207.0
Anti-dilutive stock options and restricted shares (millions):	—		—		4.3
Net income per share - Omnicom Group Inc.:
Basic	$7.54		$6.98		$6.40
Diluted	$7.46		$6.91		$6.36