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Borrowings (Term Loan B) (Details) - Libbey Glass - Senior Loans
$ in Millions
Apr. 09, 2014
USD ($)
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]      
Debt instrument, face amount $ 440.0    
Proceeds from Term Loan B $ 438.9    
Debt Instrument, Discount, Percentage 0.25%    
Original issue discount $ 1.1    
Deferred finance costs, gross 6.7    
Aggregate Principal Payments, Quarterly $ 1.1    
Interest rate   4.43% 3.75%
Maximum business days for mandatory prepayment offer   10  
Minimum      
Debt Instrument [Line Items]      
Percentage Used For Mandatory Prepayments   0.00%  
Maximum      
Debt Instrument [Line Items]      
Percentage Used For Mandatory Prepayments   50.00%  
London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Applicable rates 3.00%    
London Interbank Offered Rate (LIBOR) | Minimum      
Debt Instrument [Line Items]      
Applicable rates 0.75%