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Cash, Cash Equivalents and Restricted Cash (Schedule of Restricted Cash) (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted cash included in other current assets $ 0.2 $ 0.2 $ 0.2
Restricted cash included in other long-term assets 12.2 2.8 $ 2.8
Collateral for Inventory Loan [Member]      
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted cash included in other current assets 0.0 0.0  
Restricted cash included in other long-term assets 9.4 0.0  
Workers compensation financial assurance [Member]      
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted cash included in other current assets 0.0 0.0  
Restricted cash included in other long-term assets 2.6 2.6  
Other financial assurance [Member]      
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted cash included in other current assets 0.2 0.2  
Restricted cash included in other long-term assets $ 0.2 $ 0.2