Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Computation of basic and diluted net income per common share

The following table shows the computation of our basic and diluted net income per common share (in millions, except per share amounts):

	Three Months Ended September 30				Nine Months Ended September 30
	2019		2018		2019		2018
Numerator:
Net income	$	45.1	$	47.0	$	154.6	$	162.1
Denominator:
Weighted-average shares outstanding - basic	35.4		37.7		35.9		37.8
Effect of dilutive securities:
Equity compensation plans	0.6		0.8		0.7		0.7
Weighted-average shares outstanding - diluted	36.0		38.5		36.6		38.5
Basic earnings per share	$	1.28	$	1.25	$	4.30	$	4.29
Diluted earnings per share	$	1.25	$	1.22	$	4.22	$	4.21