Net Income per Share (Tables)

6 Months Ended

Jun. 30, 2025

Net Income per Share [Abstract]

Basic and Diluted Net Income per Share

Basic and diluted net income per share:

	Three Months Ended June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Net Income - Omnicom Group Inc.	$	257.6	$	328.1	$	545.3	$	646.7
Weighted Average Shares (millions):
Basic	194.9		195.9		195.8		196.9
Dilutive stock options and restricted shares	1.1		2.6		1.3		2.4
Diluted	196.0		198.5		197.1		199.3
Anti-dilutive stock options and restricted shares (millions)	6.5		—		5.8		—
Net Income per Share - Omnicom Group Inc.:
Basic	$1.32		$1.67		$2.78		$3.28
Diluted	$1.31		$1.65		$2.77		$3.24