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Borrowings (ABL Credit Agreement Narrative) (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Libbey Glass and Europe | Asset-backed Loan Facility | Letter of Credit    
Debt Instrument [Line Items]    
Line of credit facility, maximum borrowing capacity $ 15.0  
Line of credit facility, amount outstanding 8.6  
Libbey Glass and Europe | Asset-backed Loan Facility | Line of Credit    
Debt Instrument [Line Items]    
Line of credit facility, maximum borrowing capacity 100.0  
Line of credit facility, remaining borrowing capacity 43.7 $ 71.6
Subsidiary, Crisa Libbey Mexico S. de R.L. de C.V. | Line of Credit    
Debt Instrument [Line Items]    
Line of credit facility, maximum borrowing capacity $ 3.0