Earnings Per Share ("EPS") of Common Stock (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Summary of Reconciliation of Numerator and Denominator Used to Calculate Basic and Diluted Income (Loss) Per Share of Common Stock

The following table reconciles the numerator and denominator used to calculate basic and diluted EPS of common stock:

	Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020
	(In millions, except per share amounts)
Numerator:
Net income	$	42.6	$	31.7	$	105.7	$	102.3
Income allocated to participating securities	(0.3)		(0.3)		(0.7)		(1.3)
Net income for basic and diluted EPS	$	42.3	$	31.4	$	105.0	$	101.0
Denominator:
Basic weighted average shares	79.9		77.6		79.0		77.6
Effect of:
21/4% Notes	2.4		4.2		2.5		4.7
Awards issued under equity plans	—		0.1		—		0.1
Diluted weighted average shares	82.3		81.9		81.5		82.4
Basic
Basic EPS	$	0.53	$	0.40	$	1.33	$	1.30
Diluted
Diluted EPS	$	0.52	$	0.38	$	1.29	$	1.23