Commitments and Contingencies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) claim
Loss Contingencies [Line Items]
Number of claims dismissed | claim	34
Number of claims settled (claim) | claim	4
Claims settlements amount | $	$ 0.5
Connecticut Voluntary Corrective Action Program
Loss Contingencies [Line Items]
Estimated total cleanup costs, accrual | $	$ 1.7