Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 05, 2020	Apr. 12, 2020
Lessee, Lease, Description [Line Items]
Initial term of operating lease	20 years
Amount of rent deferred under temporary rent concessions	$ 15,500
Lease liabilities subject to accretion	934,500
Lease liabilities related to April rent deferrals	$ 12,700
Portion of April rents due from franchisees that has been postponed (percent)	40.00%
Portion of April rents due from franchisees that has been postponed	$ 2,900	$ 9,100
Rent concessions secured from landlords passed on to franchisees	5,600
Collected Postponed Marketing Fees	$ 6,200
Minimum
Lessee, Lease, Description [Line Items]
Renewal term of operating lease	1 year
Minimum | Restaurant and Office Equipment
Lessee, Lease, Description [Line Items]
Initial term of operating lease	3 years
Maximum
Lessee, Lease, Description [Line Items]
Renewal term of operating lease	20 years
Maximum | Restaurant and Office Equipment
Lessee, Lease, Description [Line Items]
Initial term of operating lease	8 years