Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2021

The following table sets forth the computation of basic and diluted net income per share:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Numerator:
Net income	$	146.5	$	73.7	$	268.8	$	142.8
Denominator:
Shares used in net income per common share – basic		55.4		55.1		55.3		55.0
Effect of dilutive securities:
Restricted stock units and stock appreciation rights		0.3		0.2		0.3		0.3
Shares used in net income per common share – diluted		55.7		55.3		55.6		55.3
Net income per common share:
Basic	$	2.64	$	1.34	$	4.86	$	2.60
Diluted	$	2.63	$	1.33	$	4.83	$	2.58