Commitments and Contingencies (Details)		3 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) defendant facilities shares	Sep. 30, 2018 USD ($) shares	Jan. 12, 2018 $ / shares shares
Bob Evans Farms
Loss Contingencies
Business Acquisition, Share Price | $ / shares				$ 77.00
Shares for which merger consideration has been paid | shares		2,500,000
Shares not yet paid | shares			3,300,000	4,350,000
Lease Guarantee, Number of Properties | facilities		143
Current annual rent of guaranteed leases		$ 13,500,000
Lease Guarantee, Interest rate increase		1.50%
Lease Guarantee, Remaining Lease Term		17 years
Bob Evans Farms | Other Liabilities
Loss Contingencies
Payments to appraisal rights holders, including interest		$ 257,600,000
Payments to be made subsequent to the closing of the acquisition			$ 267,000,000
Bob Evans Farms | Other Current Liabilities
Loss Contingencies
Payments to be made subsequent to the closing of the acquisition		$ 13,700,000
Michael Foods
Loss Contingencies
Claims filed, number		22
Loss Contingency, Number of Defendants | defendant		20
Loss Contingency, Pending Claims, Number of Plaintiff Groups		3
Litigation Settlement, Amount Awarded to Other Party	$ 75,000,000
Estimated Litigation Liability, Current		$ 6,000,000.0	$ 6,000,000.0