Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Computation of basic and diluted net income per common share

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

	Three Months Ended March 31
	2015		2014
Numerator:
Net income	$	62.2	$	42.1
Denominator:
Weighted average shares outstanding - basic	44.1		46.0
Effect of dilutive securities:
Equity compensation plans	0.7		0.8
Weighted average shares outstanding - diluted	44.8		46.8
Basic earnings per share	$	1.41	$	0.92
Diluted earnings per share	$	1.39	$	0.90