v3.26.1
Discontinued Operations- Schedule of Earnings (Loss) From Discontinued Operations, Net of tax (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 26, 2026
Jun. 27, 2025
Jun. 26, 2026
Jun. 27, 2025
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]        
Net Loss of the Group from Discontinued Operations $ (806) $ (1,629) $ (3,142) $ (8,180)
Net Loss Attributable to Jacobs from Discontinued Operations (806) (1,629) (3,142) (8,180)
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | SpinCo Business        
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]        
Revenues 0 (3,197) 0 (3,200)
Direct cost of contracts 0 3 0 0
Gross loss 0 (3,194) 0 (3,200)
Selling, general and administrative expense (1,080) (518) (938) (7,549)
Operating Loss (1,080) (3,712) (938) (10,749)
Other expense, net 0 0 (2,641) 0
Loss Before Taxes from Discontinued Operations (1,080) (3,712) (3,579) (10,749)
Income Tax Benefit 274 1,627 429 2,102
Net Loss of the Group from Discontinued Operations (806) (2,085) (3,150) (8,647)
Net Earnings Attributable to Noncontrolling Interests from Discontinued Operations 0 0 0 0
Net Loss Attributable to Jacobs from Discontinued Operations $ (806) $ (2,085) (3,150) $ (8,647)
Disposal group, including discontinued operation, foreign tax indemnity reserve release     $ 2,600