XML 18 R7.htm IDEA: XBRL DOCUMENT
v3.25.1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 28, 2025 | Mar. 29, 2024 | Mar. 28, 2025 | Mar. 29, 2024
Statement of Stockholders' Equity [Abstract] |  |  |  |
Pension and retiree medical plan liability, deferred taxes | $ 700 | $ 473 | $ 1,832 | $ 935
Derivative gains (losses), deferred tax expense (benefit) | $ (1,735) | $ 526 | $ (251) | $ (6,669)

X
- Definition Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment and Disposals, Tax + References No definition available. + Details
Name: | jec_OtherComprehensiveIncomeLossDefinedBenefitPlanAfterReclassificationAdjustmentAndDisposalsTax
Namespace Prefix: | jec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-12 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration