v3.26.1
Discontinued Operations- Schedule of Earnings (Loss) From Discontinued Operations, Net of tax (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 27, 2026
Mar. 28, 2025
Mar. 27, 2026
Mar. 28, 2025
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]        
Net (Loss) Earnings of the Group from Discontinued Operations $ (2,890) $ (5,550) $ (2,336) $ (6,551)
Net Loss Attributable to Jacobs from Discontinued Operations (2,890) (5,550) (2,336) (6,551)
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | SpinCo Business        
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]        
Revenues 0 (67) 0 (3)
Direct cost of contracts 0 58 0 (3)
Gross (loss) profit 0 (9) 0 (6)
Selling, general and administrative expense (345) (5,683) 142 (7,031)
Operating (Loss) Profit (345) (5,692) 142 (7,037)
Other expense, net (2,641) 0 (2,641) 0
(Loss) Earnings Before Taxes from Discontinued Operations (2,986) (5,692) (2,499) (7,037)
Income Tax Benefit (Expense) 88 132 155 475
Net (Loss) Earnings of the Group from Discontinued Operations (2,898) (5,560) (2,344) (6,562)
Net Earnings Attributable to Noncontrolling Interests from Discontinued Operations 0 0 0 0
Net Loss Attributable to Jacobs from Discontinued Operations (2,898) $ (5,560) (2,344) $ (6,562)
Disposal group, including discontinued operation, foreign tax indemnity reserve release $ 2,600   $ 2,600