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Discontinued Operations- Schedule of Earnings (Loss) From Discontinued Operations, Net of tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 28, 2025 | Mar. 29, 2024 | Mar. 28, 2025 | Mar. 29, 2024
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |  |
Net (Loss) Earnings of the Group from Discontinued Operations | $ (5,550) | $ 72,889 | $ (6,551) | $ 119,530
Net Earnings Attributable to Noncontrolling Interests from Discontinued Operations | 0 | (3,013) | 0 | (6,388)
Net (loss) earnings attributable to Jacobs from discontinued operations | (5,550) | 69,876 | (6,551) | 113,142
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | SpinCo Business |  |  |  |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |  |
Revenues | (67) | 1,421,914 | (3) | 2,770,912
Direct cost of contracts | 58 |  |  |
Direct cost of contracts |  | (1,229,261) | (3) | (2,392,450)
Gross (loss) profit | (9) | 192,653 | (6) | 378,462
Selling, general and administrative expense | (5,683) | (94,908) | (7,031) | (218,653)
Operating (Loss) Profit | (5,692) | 97,745 | (7,037) | 159,809
Other income, net | 0 | (167) | 0 | 314
(Loss) Earnings Before Taxes from Discontinued Operations | (5,692) | 97,578 | (7,037) | 160,123
Income Tax Benefit (Expense) | 132 | (23,919) | 475 | (39,251)
Net (Loss) Earnings of the Group from Discontinued Operations | (5,560) | 73,659 | (6,562) | 120,872
Net Earnings Attributable to Noncontrolling Interests from Discontinued Operations | 0 | (3,013) | 0 | (6,388)
Net (loss) earnings attributable to Jacobs from discontinued operations | $ (5,560) | $ 70,646 | $ (6,562) | $ 114,484

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