Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Environmental remediation liabilities - discounted	$ 35.1	$ 35.6
Accrual for environmental loss contingencies - weighted-average discount rate	3.70%	3.70%
Environmental remediation liabilities - undiscounted	$ 68.8	$ 69.2
Minimum
Loss Contingencies [Line Items]
Potential revision on future environmental remediation costs before tax	10.0
Maximum
Loss Contingencies [Line Items]
Potential revision on future environmental remediation costs before tax	30.0
Other noncurrent liabilities
Loss Contingencies [Line Items]
Tax Indemnification Liability	$ 31.6	$ 31.0