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v3.25.2

Goodwill and Intangible Assets - Narrative (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 01, 2024 USD ($) | Feb. 28, 2025 USD ($) | Jun. 29, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 29, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jan. 20, 2025 contract | Sep. 29, 2024 USD ($)
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill | $ 0 |  | $ 0 | $ 0 | $ 92,416 | $ 0 |  |
Percentage of excess of fair value over carrying value (less than) | 72.00% |  |  |  |  |  |  |
Percentage of cancellation programs |  |  |  |  |  |  | 83.00% |
Number of contracts cancelled | contract |  |  |  |  |  |  | 5,200 |
Goodwill |  |  | 2,084,872 |  | 2,084,872 |  |  | $ 2,046,569
Amortization expense |  |  | 8,300 | $ 13,800 | 27,600 | $ 38,400 |  |
GSG |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Gross amounts of goodwill |  |  | 770,200 |  | 770,200 |  |  | 768,500
Accumulated impairment |  |  | 110,100 |  | 110,100 |  |  | 17,700
Impairment of goodwill |  |  |  |  | 92,416 |  |  |
Goodwill |  |  | 660,131 |  | 660,131 |  |  | 750,817
CIG |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Gross amounts of goodwill |  |  | 1,546,300 |  | 1,546,300 |  |  | 1,417,300
Accumulated impairment |  |  | 121,500 |  | 121,500 |  |  | 121,500
Impairment of goodwill |  |  |  |  | 0 |  |  |
Goodwill |  |  | 1,424,741 |  | 1,424,741 |  |  | $ 1,295,752
Global Development Services |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill |  | $ 92,400 | 92,400 |  |  |  |  |
Goodwill |  | $ 130,500 | $ 38,100 |  | $ 38,100 |  |  |

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