Restructuring and Other Charges (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring And Related Activities [Abstract]

Restructuring Accrual Activity

The following summarizes restructuring accrual activity for the years ended December 31, 2021, 2020, and 2019:

	Employee Related Costs			Tenancy and Other Costs			Total Restructuring Costs
	(In millions)
Balance at January 1, 2019	$	0.4		$	1.5		$	1.9
Restructuring charges		2.1			0.3			2.4
Cash payments		(1.5	)		(0.9	)		(2.4	)
Balance at December 31, 2019	$	1.0		$	0.9		$	1.9
Restructuring charges		2.2			—			2.2
Cash payments		(2.7	)		(0.3	)		(3.0	)
Addition to reserve		—			0.1			0.1
Balance at December 31, 2020	$	0.5		$	0.7		$	1.2
Cash payments		(0.5	)		—			(0.5	)
Balance at December 31, 2021	$	—		$	0.7		$	0.7