Borrowings (ABL Credit Agreement Narrative) (Details) - Subsidiaries, Libbey Glass and Libbey Europe [Member] - Asset-backed Loan Facility - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Line of Credit
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity, Amount of Rent Reserves Offset	$ 0.5
Line of Credit Facility, Current Borrowing Capacity, Amount of Natural Gas Derivative Offset	0.1
Line of credit facility, maximum borrowing capacity	100.0
Line of credit facility, remaining borrowing capacity	83.5	$ 88.4
Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	30.0
Line of credit facility, amount outstanding	$ 7.2