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Unconsolidated Affiliated Companies (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Ownership threshold, investment as equity method 50.00%    
Unconsolidated affiliated companies $ 8.4 $ 17.5  
Equity in earnings of affiliated companies $ 0.4 $ 1.2 $ 1.7
Colada Continua Chilean, S.A. [Member]      
Ownership percentage in affiliated companies, less than 41.00%    
Nostag GmbH & Co. KG [Member]      
Ownership percentage in affiliated companies, less than 33.00%    
Pakistan Cables Limited [Member]      
Ownership percentage in affiliated companies, less than 24.60%