XML 78 R49.htm IDEA: XBRL DOCUMENT
v3.20.2

Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Oct. 02, 2020 | Sep. 28, 2019 | Sep. 27, 2019
Significant Accounting Policies [Line Items] |  |  |
Operating lease right-of-use assets | $ 576,915 | $ 767,000 | $ 0
Reclassifications of previously recorded lease incentives and deferred rent |  | 82,300 |
Restructured lease cease-use liabilities |  | 141,400 |
Operating lease liability | 164,312 | 180,700 | 0
Long-term operating lease liability | $ 735,202 | $ 810,100 | $ 0
Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Term of lease contract | 1 year |  |
Minimum | Buildings |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of assets | 20 years |  |
Minimum | Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of assets | 3 years |  |
Minimum | Leasehold improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of assets | 4 years |  |
Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Term of lease contract | 13 years |  |
Maximum | Buildings |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of assets | 40 years |  |
Maximum | Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of assets | 10 years |  |
Maximum | Leasehold improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of assets | 10 years |  |

X
- Definition Business Exit Cost, Lease Cease Use Liabilities + References No definition available. + Details
Name: | jec_BusinessExitCostLeaseCeaseUseLiabilities
Namespace Prefix: | jec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Operating Lease, Reclassification, Lease Incentives And Deferred Rent + References No definition available. + Details
Name: | jec_OperatingLeaseReclassificationLeaseIncentivesAndDeferredRent
Namespace Prefix: | jec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition [Line Items] for Significant Accounting Policies [Table] + References No definition available. + Details
Name: | jec_SignificantAccountingPoliciesLineItems
Namespace Prefix: | jec_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |