Business Combination, Consideration Received From Acquiree

No definition available.

Name:	jec_BusinessCombinationConsiderationReceivedFromAcquiree
Namespace Prefix:	jec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of.

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+ Details

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Balance Type:	debit
Period Type:	instant

- 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_BusinessAcquisitionLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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Balance Type:	na
Period Type:	instant

- Definition

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

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Period Type:	instant

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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Balance Type:	credit
Period Type:	duration

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

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Balance Type:	debit
Period Type:	instant

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The number of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Balance Type:	na
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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- Details

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- Details

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- Details

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- Details

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- Details

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Basis of Presentation (Details) - USD ($) shares in Millions	Feb. 04, 2022	Nov. 19, 2021	Mar. 02, 2021	Nov. 24, 2020	Apr. 26, 2019	Oct. 01, 2021
Worley Stock
Business Acquisition [Line Items]
Ordinary shares included in purchase price (in shares)					58.2
Worley
Business Acquisition [Line Items]
Consideration transferred					$ 3,400,000,000
Consideration paid in cash					$ 2,800,000,000
Discontinued Operations \| Worley
Business Acquisition [Line Items]
Assets held for sale						$ 0
PA Consulting Employees
Business Acquisition [Line Items]
Ownership interest of employees			35.00%
BlackLynx
Business Acquisition [Line Items]
Net assets acquired		$ 235,800,000
Consideration paid in cash		235,400,000
Contingent consideration		400,000
Debt assumed		$ 5,300,000
PA Consulting Group Limited
Business Acquisition [Line Items]
Consideration transferred			$ 1,700,000,000
Net assets acquired			$ 1,701,900,000
Percentage of outstanding shares of common and preferred stock acquired			65.00%
Consideration received from acquiree			$ 261,000,000
Redeemable Noncontrolling interests			$ 582,400,000
Buffalo Group
Business Acquisition [Line Items]
Consideration transferred				$ 190,100,000
Net assets acquired				190,100,000
Consideration paid in cash				182,400,000
Contingent consideration				7,700,000
Debt assumed				$ 7,700,000
StreetLightData, Inc.
Business Acquisition [Line Items]
Net assets acquired	$ 196,800,000
Consideration paid in cash	190,700,000
Debt assumed	$ 1,000,000.0