Discontinued Operations - Qdoba, Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 07, 2019 USD ($)	Jul. 05, 2020 extnsion_option	Jul. 07, 2019 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Discontinued operation, period of continuing involvement after disposal		12 months
Discontinued operation, period of continuing involvement after disposal, number of extension options | extnsion_option		2
Discontinued operation, period of continuing involvement after disposal, service period extension option		3 months
Other nonrecurring income | $	$ 0.9		$ 6.5