Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Net income available to IPG common stockholders	$	169.5	$	145.8	$	161.5	$	131.7
Weighted-average number of common shares outstanding - basic	386.2		383.6		385.4		383.5
Dilutive effect of stock options and restricted shares	5.0		5.9		4.7		5.4
Weighted-average number of common shares outstanding - diluted	391.2		389.5		390.1		388.9
Earnings per share available to IPG common stockholders:
Basic	$	0.44	$	0.38	$	0.42	$	0.34
Diluted	$	0.43	$	0.37	$	0.41	$	0.34