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Goodwill and Intangibles (Tables) | 3 Months Ended
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Dec. 29, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Carrying Value of Goodwill by Reportable Segment Appearing in Accompanying Consolidated Balance Sheets | The carrying value of goodwill appearing in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 was as follows (in thousands):
| Critical Mission Solutions |  | People & Places Solutions |  | Divergent Solutions |  | PA Consulting |  | Total
Balance September 29, 2023 | $ | 2,244,985 |  |  | $ | 3,208,193 |  |  | $ | 595,712 |  |  | $ | 1,294,636 |  |  | $ | 7,343,526 |
Foreign currency translation and other | 6,530 |  |  | 8,954 |  |  | 1,733 |  |  | 60,655 |  |  | 77,872 |
Balance December 29, 2023 | $ | 2,251,515 |  |  | $ | 3,217,147 |  |  | $ | 597,445 |  |  | $ | 1,355,291 |  |  | $ | 7,421,398 |
Schedule of Acquired Intangibles in Accompanying Consolidated Balance Sheets | The following table provides certain information related to the Company’s acquired intangibles in the accompanying Consolidated Balance Sheets at December 29, 2023 and September 29, 2023 (in thousands):
| Customer Relationships, Contracts and Backlog |  |  |  | Developed Technology |  | Trade Names |  |  |  |  |  |  |  | Total
Balance September 29, 2023 | $ | 1,022,401 |  |  |  |  | $ | 74,791 |  |  | $ | 174,751 |  |  |  |  |  |  |  |  | $ | 1,271,943 |
Amortization | (44,602) |  |  |  |  | (3,971) |  |  | (2,546) |  |  |  |  |  |  |  |  | (51,119) |
Foreign currency translation and other | 25,655 |  |  |  |  | 244 |  |  | 21,606 |  |  |  |  |  |  |  |  | 47,505 |
Balance December 29, 2023 | $ | 1,003,454 |  |  |  |  | $ | 71,064 |  |  | $ | 193,811 |  |  |  |  |  |  |  |  | $ | 1,268,329 |
Schedule of Estimated Amortization Expense of Intangible Assets | The following table presents estimated amortization expense of intangible assets for the remainder of fiscal 2024 and for the succeeding years.
Fiscal Year |  | (in millions)
2024 |  | $ | 158.5 |
2025 |  | 211.0 |
2026 |  | 187.8 |
2027 |  | 155.3 |
2028 |  | 144.4 |
Thereafter |  | 411.3 |
Total |  | $ | 1,268.3 |

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