Earnings Per Share (Notes)

9 Months Ended

Sep. 30, 2024

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings Per Share

The following sets forth basic and diluted earnings per common share available to IPG common stockholders.

	Three Months Ended September 30,				Nine months ended September 30,
	2024		2023		2024		2023
Net income available to IPG common stockholders	$	20.1	$	243.7	$	345.0	$	635.2
Weighted-average number of common shares outstanding - basic	373.9		383.6		376.2		385.0
Dilutive effect of stock options and restricted shares	2.9		1.9		2.5		1.8
Weighted-average number of common shares outstanding - diluted	376.8		385.5		378.7		386.8
Earnings per share available to IPG common stockholders:
Basic	$	0.05	$	0.64	$	0.92	$	1.65
Diluted	$	0.05	$	0.63	$	0.91	$	1.64