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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Restructuring Expenses and Asset Impairments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring expenses and asset impairments				$ 9.3	$ 11.8	$ 21.0
Asset impairments				0.8	3.1	10.2
Restructuring accrual	$ 3.9	$ 6.1		2.8	3.9	$ 6.1
Property, plant and equipment
Restructuring Cost and Reserve [Line Items]
Asset impairment charges				$ 0.8	$ 2.9
FMT
Restructuring Cost and Reserve [Line Items]
Asset impairments	2.5
FMT \| Corporate Office
Restructuring Cost and Reserve [Line Items]
Asset impairments	$ 0.6
HST
Restructuring Cost and Reserve [Line Items]
Operating lease, impairment		$ 0.4
Asset impairment charges			$ 9.7