Benefit Plans - Pension and Other Postretirement Benefit Liabilities in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Total Pension and Other Postretirement Benefit Liabilities Included in Balance Sheets [Abstract]
Other assets	$ 10.4	$ 2.3
Accrued liabilities	(10.9)	(17.9)
Pension and other postretirement benefits	$ (183.8)	$ (265.9)

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Name:	us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant