Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Assets, Net [Abstract]
Deferred tax assets	$ 8.0	$ 16.5
Deferred tax liabilities	(2.7)	(2.0)
Net deferred tax assets	5.3	14.5
Deferred tax assets
Pension benefits	0.5	9.9
Accrued liabilities	1.5	0.7
Tax loss and credit carry forwards	28.3	25.8
Employee compensation benefits	2.9	1.9
Other	2.1	1.5
Total deferred tax assets	35.3	39.8
Valuation allowances	(18.0)	(19.3)
Deferred tax assets, net of valuation allowances	17.3	20.5
Deferred tax liabilities
Property, plant and equipment	4.5	1.7
Pension benefits	3.5	0.0
Goodwill and other intangibles	2.4	3.2
Other	1.6	1.1
Total deferred tax liabilities	$ 12.0	$ 6.0

Deferred Tax Assets, Operating Loss Carryforward And Tax Credit Carryforward

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Deferred Tax Liabilities, Tax Deferred Expense, Compensation and Benefits, Pensions

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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