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Commitments and Contingencies (Details) - USD ($)
$ in Millions
Oct. 24, 2016
May 29, 2014
Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]      
Alleged damages suffered   excess of $100 million  
Minimum      
Loss Contingencies [Line Items]      
Loss contingency, Estimate of possible loss     $ 0
Maximum      
Loss Contingencies [Line Items]      
Loss contingency, Estimate of possible loss     $ 25
Subsequent Event      
Loss Contingencies [Line Items]      
Litigation settlement amount $ (45)