Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2017

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 March 31,
	2017		2016
Net income available to IPG common stockholders	$	21.5	$	5.4
Weighted-average number of common shares outstanding - basic	391.7		400.6
Add: Effect of dilutive securities
Restricted stock, stock options and other equity awards	7.6		8.7
Weighted-average number of common shares outstanding - diluted	399.3		409.3
Earnings per share available to IPG common stockholders:
Basic	$	0.05	$	0.01
Diluted	$	0.05	$	0.01