XML 82 R53.htm IDEA: XBRL DOCUMENT
v3.21.2

Earnings Per Share and Certain Related Information - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | Sep. 23, 2021 | Jul. 14, 2021 | Apr. 22, 2021 | Jan. 27, 2021 | Oct. 30, 2020 | Jul. 09, 2020 | May 05, 2020 | Jan. 16, 2020 | Oct. 01, 2021 | Jan. 17, 2019
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Dividends declared (in dollars per share) | $ 0.21 | $ 0.21 | $ 0.21 | $ 0.21 | $ 0.19 | $ 0.19 | $ 0.19 | $ 0.19 |  |
2019 Stock Repurchase Program |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Amount authorized to be repurchased |  |  |  |  |  |  |  |  |  | $ 1,000.0
Remaining authorized repurchase amount |  |  |  |  |  |  |  |  | $ 0.0 |
2020 Stock Repurchase Program |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Amount authorized to be repurchased |  |  |  |  |  |  |  | $ 1,000.0 |  |
Remaining authorized repurchase amount |  |  |  |  |  |  |  |  | 782.9 |
Accelerated Share Repurchase Program |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Amount authorized to be repurchased |  |  |  |  |  |  |  |  | $ 250.0 |

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_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=jec_TwoThousandNineteenStockRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=jec_TwoThousandTwentyStockRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=jec_AcceleratedShareRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |