Earnings Per Share Basic and Diluted Earnings Per Common Share Available to IPG Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Common Share Available to IPG Common Stockholders

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

	Years ended December 31,
	2016		2015		2014
Net income available to IPG common stockholders	$	608.5	$	454.6	$	477.1
Weighted-average number of common shares outstanding - basic	397.9		408.1		419.2
Add: Effect of dilutive securities
Restricted stock, stock options and other equity awards	10.1		7.6		6.2
Weighted-average number of common shares outstanding - diluted	408.0		415.7		425.4
Earnings per share available to IPG common stockholders:
Basic	$	1.53	$	1.11	$	1.14
Diluted	$	1.49	$	1.09	$	1.12