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Legal Proceedings (Details)
$ in Millions
3 Months Ended 9 Months Ended 24 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2009
Sep. 30, 2016
USD ($)
Loss Contingencies          
Loss Contingency, Number of Defendants       20  
Michael Foods          
Loss Contingencies          
Claims filed, number       22  
Litigation Settlement, Amount   $ 75.0      
Litigation Settlement, Expense $ 10.0 $ 74.5 $ 10.0    
Estimated Litigation Liability         $ 28.5