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v3.25.3

Goodwill and Intangible Assets - Narrative (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) | Feb. 28, 2025 USD ($) | Mar. 30, 2025 USD ($) | Sep. 28, 2025 USD ($) | Sep. 29, 2024 USD ($) | Oct. 01, 2023 USD ($) | Jan. 20, 2025 contract
Goodwill [Line Items] |  |  |  |  |  |  |
Impairment of goodwill | $ 0 |  |  | $ 92,416 | $ 0 | $ 0 |
Percentage of excess of fair value over carrying value (less than) | 38.00% |  |  |  |  |  |
Percentage of cancellation programs |  |  |  |  |  |  | 83.00%
Number of contracts cancelled | contract |  |  |  |  |  |  | 5,200
Goodwill |  |  |  | 2,049,874 | 2,046,569 | 1,880,244 |
Amortization of intangible assets |  |  |  | 37,100 | 50,000 | 41,200 |
Reduction in intangible assets, foreign currency translation adjustment |  |  |  | 0 | 13,400 |  |
Global Development Services |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Impairment of goodwill |  | $ 92,400 | $ 92,400 |  |  |  |
Goodwill |  | $ 130,500 |  | 38,100 |  |  |
GSG |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Impairment of goodwill |  |  |  | 92,416 |  |  |
Goodwill |  |  |  | 658,511 | 750,817 | 659,942 |
Gross amounts of goodwill |  |  |  | 768,600 | 768,500 |  |
Accumulated impairment |  |  |  | 110,100 | 17,700 |  |
CIG |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Impairment of goodwill |  |  |  | 0 |  |  |
Goodwill |  |  |  | 1,391,363 | 1,295,752 | $ 1,220,302 |
Gross amounts of goodwill |  |  |  | 1,512,900 | 1,417,300 |  |
Accumulated impairment |  |  |  | $ 121,500 | $ 121,500 |  |

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