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Business Segments - Narrative (Details) $ in Millions | 3 Months Ended
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Jan. 01, 2021 USD ($) segment nationalPark | Dec. 27, 2019 USD ($)
Segment Reporting Information [Line Items] |  |
Number of reportable segments | segment | 3 |
Possessory interest in National Park service sites | nationalPark | 1 |
Cost of services provided | FSS United States |  |
Segment Reporting Information [Line Items] |  |
Proceeds from recovery of investment | $ | $ 10.0 | $ 15.3
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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