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Commitments and Contingencies (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 60 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Loss Contingencies [Line Items]          
Annual sales $ 1,032.3 $ 1,060.0 $ 2,074.8 $ 2,148.0  
PERU | Minimum [Member]          
Loss Contingencies [Line Items]          
Annual sales         $ 55.0
PERU | Maximum [Member]          
Loss Contingencies [Line Items]          
Annual sales         $ 85.0