Commitments and Contingencies (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($) claims	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Number of claims dismissed | claims		110
Number of claims settled (claim) | claims		17
Claims settlements amount		$ 4.9
Asbestos-related claims	$ 75.7	$ 75.7	$ 76.2
Recorded third-party environmental recoveries receivable			$ 69.2
Primary coverage period		8 years
Excess coverage period		2 years
Indemnity and defense costs	0.2	$ 0.5
Connecticut Voluntary Corrective Action Program
Loss Contingencies [Line Items]
Environmental remediation expense		0.7
Estimated total cleanup costs, accrual	1.7	1.7
PCB Contamination Proceedings
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 0.2	$ 0.2