Business Segments - Narrative (Details) $ in Thousands	9 Months Ended
Jul. 02, 2021 USD ($) segment nationalPark	Jun. 26, 2020 USD ($) reporting_Unit
Segment Reporting Information [Line Items]
Number of reportable segments \| segment	3
Possessory interest in National Park service sites \| nationalPark	1
Goodwill impairment and asset write-downs	$ 0	$ 198,600
FSS International
Segment Reporting Information [Line Items]
Goodwill impairment and asset write-downs		$ 198,600
Number of reporting units \| reporting_Unit		1
Cost of services provided \| FSS United States
Segment Reporting Information [Line Items]
Proceeds from recovery of investment	$ 10,000	$ 15,300
Sales \| Food Services \| Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	73.00%
Sales \| Facilities & Other \| Product Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	27.00%

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