Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($) site
Loss Contingencies [Line Items]
Number of Superfund sites for which company may be liable | site	1
Outstanding letters of credit	$ 13.0
Workers Compensation Insurance Claims
Loss Contingencies [Line Items]
Insurance deductible amount	1.0
General Liability Insurance Claims
Loss Contingencies [Line Items]
Insurance deductible amount	3.0
Auto Liability Insurance Claims
Loss Contingencies [Line Items]
Insurance deductible amount	0.3
Insurance Claims
Loss Contingencies [Line Items]
Loss contingency accrual	$ 26.7