Leases, Suplemental Cash Flow and Non-cash Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Apr. 12, 2020	Jul. 05, 2020	Jul. 07, 2019
Cash Paid for Amounts Included in the Measurement of Lease Liabilities [Abstract]
Operating cash flows from operating leases		$ 151,981
Operating cash flows from financing leases		88
Financing cash flows from financing leases		593
Right-of-use Assets Obtained in Exchange for Lease Obligations [Abstract]
Operating leases		143,604
Financing leases		132
Proceeds from the sale and leaseback of assets		$ 19,828	$ 3,056
Initial term of operating lease		20 years
Notice period for termination of lease without penalty	90 days
Multi-tenant Commercial Property
Right-of-use Assets Obtained in Exchange for Lease Obligations [Abstract]
Proceeds from the sale and leaseback of assets	$ 17,400
Gain (loss) on sale and leaseback transaction	$ (200)
Initial term of operating lease	20 years
Principal Executive Offices
Right-of-use Assets Obtained in Exchange for Lease Obligations [Abstract]
Proceeds from the sale and leaseback of assets	$ 20,600
Gain (loss) on sale and leaseback transaction	$ 10,800
Initial term of operating lease	18 months