Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Schedule of Environmental Remediation Reserve Activity

Environmental remediation reserve activity for the three years ended December 31, 2020 was as follows:

(In millions)	2020			2019			2018
Beginning remediation accrual balance	$	2.5		$	2.7			2.8
Current period expenses	—				—			0.3
Cash expenditures		(0.1	)		(0.2	)		(0.4	)
Ending remediation accrual balance	$	2.4		$	2.5			2.7

Schedule of Product Warranty

Warranty expense for the years ended December 31, 2020, 2019 and 2018, and accrued warranty cost, included in “other accrued liabilities” in the consolidated balance sheets were as follows:

	Product
(In millions)	Warranties
Balance as of December 31, 2017	$	3.6
Warranty expense		4.6
Deductions and other		(3.4	)
Balance as of December 31, 2018	$	4.8
Warranty expense		2.9
Deductions and other		(2.2	)
Balance as of December 31, 2019	$	5.5
Warranty expense		1.7
Deductions and other		(4.6	)
Balance as of December 31, 2020	$	2.6