Contingencies Environmental Liability (Details)				12 Months Ended
	Nov. 12, 2018 entity	Oct. 26, 2018	Oct. 30, 2009	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
BKK Working Group
Site Contingency [Line Items]
Loss contingency, number of entities cooperating with legal matter | entity	50
Minimum | BKK Working Group
Site Contingency [Line Items]
Loss contingency, number of companies involved	500
Syracuse China Company and Libbey Glass Inc.
Site Contingency [Line Items]
Loss contingency, claim for indemnification, incurred				$ 400,000
Syracuse China Company and Libbey Glass Inc. | TPC York
Site Contingency [Line Items]
Loss contingency, claim for indemnification, remaining liability of counterparty				2,900,000
Loss contingency, claim for indemnification, reimbursement received				1,300,000
Syracuse China Company and Libbey Glass Inc. | Maximum | TPC York
Site Contingency [Line Items]
Loss contingency, claim for indemnification				7,500,000
Lower Ley Creek sub-site
Site Contingency [Line Items]
Site contingency, number of potentially responsible parties			8
Lower Ley Creek sub-site | Unfavorable Regulatory Action | Other Long-Term Liabilities
Site Contingency [Line Items]
Accrued environmental loss contingencies, noncurrent				700,000	$ 800,000
Lower Ley Creek sub-site | Unfavorable Regulatory Action | Other Noncurrent Assets
Site Contingency [Line Items]
Recorded third-party environmental recoveries, noncurrent				400,000	$ 400,000
Lower Ley Creek sub-site | Syracuse China
Site Contingency [Line Items]
Site Contingency, Number of Potentially Responsible Related Parties			1
Lower Ley Creek sub-site | Motors Liquidation Company | Unfavorable Regulatory Action
Site Contingency [Line Items]
Loss contingency, damages paid, value				22,000,000
Lower Ley Creek sub-site | Minimum | Unfavorable Regulatory Action
Site Contingency [Line Items]
Site contingency, loss exposure not accrued, best estimate				17,000,000
Loss contingency, range of possible loss, minimum				0
Lower Ley Creek sub-site | Maximum | Unfavorable Regulatory Action
Site Contingency [Line Items]
Site contingency, loss exposure not accrued, best estimate				24,800,000
Upper Ley Creek sub-site | Minimum
Site Contingency [Line Items]
Loss contingency, number of companies involved		30
Upper Ley Creek sub-site | Syracuse China Company and Libbey Glass Inc. | Maximum
Site Contingency [Line Items]
Site contingency, loss exposure not accrued, best estimate				$ 93,500,000