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Commitments and Contingencies Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Commitments [Line Items]
Restructuring reserve	$ 1.0
Other accrued expenses and liabilities
Other Commitments [Line Items]
Insurance liabilities, current	65.2	$ 48.2
Other long-term obligations
Other Commitments [Line Items]
Insurance liabilities, noncurrent	241.3	192.8
Prepaid expenses and other
Other Commitments [Line Items]
Anticipated insurance recoveries, current	28.9	14.4
Other assets
Other Commitments [Line Items]
Anticipated insurance recoveries, noncurrent	$ 102.2	$ 54.3

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Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of the insurance contracts. Represents the current amount receivable, that is amounts expected to be collected within one year.

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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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