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Revenue Accounting for Contracts - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 27, 2024 | Dec. 29, 2023
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 2,932,956 | $ 2,810,227
United States |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,812,830 | 1,734,649
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 712,567 | 675,535
Canada |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 58,972 | 63,138
Asia |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 33,369 | 30,610
India |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 36,935 | 35,743
Australia and New Zealand |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 140,032 | 140,321
Middle East and Africa |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 138,251 | $ 130,231

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