Net Income (Loss) Per Common Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Summary of Earnings Per Share Basic and Diluted

	Quarter Ended June 30,					Six Months Ended June 30,
(In millions, except per share data)	2020			2019		2020		2019
Basic net income (loss) per common share:
Net income (loss)	$	(1.0	)	$	80.9	$	41.4	$	153.1
Weighted average common shares outstanding		83.7			85.2		83.7		85.1
Basic net income (loss) per common share	$	(0.01	)	$	0.95	$	0.49	$	1.80
Diluted net income (loss) per common share:
Net income (loss)		(1.0	)		80.9		41.4		153.1
Weighted average common shares outstanding — Basic		83.7			85.2		83.7		85.1
Plus incremental shares from assumed conversions:
Restricted stock units		—			0.4		0.2		0.4
Stock options		—			0.6		0.2		0.6
Weighted average common shares outstanding — Dilutive (1)		83.7			86.2		84.1		86.1
Diluted net (loss) income per common share (1)	$	(0.01	)	$	0.94	$	0.49	$	1.78

(1) For the quarter ended June 30, 2020, the dilutive impact of outstanding options and restricted stock units was excluded from the dilutive share count as a result of the Company’s net loss for the period.