Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	4 Months Ended	12 Months Ended
	Jan. 20, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Nonrecurring Income	$ 3.7
Other Nonrecurring Expense	35.4
Disposal Group, Including Discontinued Operation, Accrued Income Tax Payable	2.8
Lease Guarantee	$ 35.9
Term Loan [Member] | Qdoba
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of Debt		$ 260.0