XML 128 R68.htm IDEA: XBRL DOCUMENT
v3.19.3

Goodwill and Intangibles - Narrative (Details) - CH2M HILL Companies, Ltd. $ in Millions | Sep. 27, 2019 USD ($)
--- | ---
Finite-Lived Intangible Assets [Line Items] |
Lease intangible liabilities | $ 4.7
Unamortized lease intangible liabilities | $ 4.0

X
- Definition Lease intangible liabilities. + References No definition available. + Details
Name: | jec_LeaseIntangibleLiabilities
Namespace Prefix: | jec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Unamortized Lease Intangible Liabilities + References No definition available. + Details
Name: | jec_UnamortizedLeaseIntangibleLiabilities
Namespace Prefix: | jec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=jec_CH2MHILLCompaniesLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |