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Business Segments - Narrative (Details) $ in Millions | 6 Months Ended
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Mar. 31, 2023 USD ($) segment nationalPark | Apr. 01, 2022 USD ($)
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 | $ | $ 19.8 | $ 9.0
Food Services | Sales | Product Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Concentration risk, percentage | 73.00% |
Facilities & Other | Sales | Product Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Concentration risk, percentage | 27.00% |

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