Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2018	Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Deferred Compensation Investment	$ 43.4	$ 15.4
Derivative assets	38.2	5.9
Assets, Fair Value Disclosure	81.6	21.3
Deferred Compensation Liabilities	50.1	22.5
Derivative Liability	210.4	243.5
Other Liabilities, Fair Value Disclosure	260.5	266.0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Deferred Compensation Investment	43.4	15.4
Derivative assets	0.0	0.0
Assets, Fair Value Disclosure	43.4	15.4
Deferred Compensation Liabilities	0.0	0.0
Derivative Liability	0.0	0.0
Other Liabilities, Fair Value Disclosure	0.0	0.0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Deferred Compensation Investment	0.0	0.0
Derivative assets	38.2	5.9
Assets, Fair Value Disclosure	38.2	5.9
Deferred Compensation Liabilities	50.1	22.5
Derivative Liability	210.4	243.5
Other Liabilities, Fair Value Disclosure	260.5	266.0
Debt, Fair Value	7,308.2	$ 7,343.4
Bob Evans Farms
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Deferred Compensation Liability, Current	$ 26.8