Net Income Per Common Share

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Net Income Per Common Share

 Note 11 — Net Income Per Common Share

Computations of basic and diluted net income per common share for the years ended December 31, 2017, 2016 and 2015, are as follows:

(In millions, except per share data)	2017		2016		2015
Basic net income per common share:
Net income	$	284.0	$	249.8	$	237.2
Weighted average common shares outstanding		90.6		92.8		95.8
Basic net income per common share	$	3.13	$	2.69	$	2.48
Diluted net income per common share:
Weighted average common shares outstanding — Basic		90.6		92.8		95.8
Plus incremental shares from assumed conversions:
Restricted stock units		0.4		0.4		0.5
Stock options		0.9		1.0		0.9
Weighted average common shares outstanding — Dilutive		91.9		94.2		97.2
Dilutive net income per common share	$	3.09	$	2.65	$	2.44
Anti-dilutive shares outstanding, excluded from computation	0.2		0.4			—