XML 86 R71.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Postretirement and Other Employee Benefits (Additional Information) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Company contributions | $ 40.5 | $ 33.6 | $ 33.3
Minimum |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Contributions expected to funded pension plans during fiscal year 2018 | 0.2 |  |
Maximum |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Contributions expected to funded pension plans during fiscal year 2018 | $ 0.4 |  |
Global equity securities |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Target allocation percentage | 35.00% |  |
Debt securities |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Target allocation percentage | 65.00% |  |
United Kingdom |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Service period | 3 years |  |

X
- Definition Defined Benefit Plan, Service Period + References No definition available. + Details
Name: | jbl_DefinedBenefitPlanServicePeriod
Namespace Prefix: | jbl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Pension and Other Postretirement Benefits Disclosure [Line Items] + References No definition available. + Details
Name: | jbl_PensionAndOtherPostretirementBenefitsDisclosureLineItems
Namespace Prefix: | jbl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of labor-related expenses classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
Name: | us-gaap_OtherLaborRelatedExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
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: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanDebtSecurityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |