Commitments and Contingencies (Details) - Damage from fire $ in Millions		3 Months Ended	12 Months Ended
	Sep. 30, 2019 USD ($) plaintiff	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Natural disasters
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff	38
Damages sought, value	$ 1.5
Loss contingency, costs incurred			$ 4.8
Loss contingency, receivable	$ 0.3	$ 4.0	0.6
Net of insurance proceeds		$ 0.8
Inventory and property, plant and equipment
Loss Contingencies [Line Items]
Loss contingency, costs incurred			1.9
Property-related cleanup and other costs
Loss Contingencies [Line Items]
Loss contingency, costs incurred			2.1
Self-insured retention for third-party claims
Loss Contingencies [Line Items]
Loss contingency, costs incurred			$ 0.8