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Commitments and Contingencies (Details) - Brazil
$ in Millions
2 Months Ended
Jan. 31, 2011
USD ($)
assessment
Dec. 31, 2016
USD ($)
Dec. 31, 2014
USD ($)
Commitments And Contingencies [Line Items]      
Number of tax assessments | assessment 2    
Value of assessments served on Brazilian subsidiary $ 13.0    
Court deposit   $ 8.8 $ 8.8