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Commitments and Contingencies - German Regulatory Investigation (Details) - Alleged Regulation Violations Regarding German Subsidiary
€ in Millions, $ in Millions
1 Months Ended
Oct. 31, 2015
EUR (€)
Sep. 30, 2015
EUR (€)
Sep. 30, 2015
USD ($)
Loss Contingencies [Line Items]      
Estimated Litigation Liability   € 17.4 $ 15.5
Subsequent Event      
Loss Contingencies [Line Items]      
Litigation Settlement, Amount € 15.5