XML 143 R123.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Segment Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 Segment | Jun. 30, 2017 Segment | Sep. 30, 2017 Segment Person | Sep. 30, 2016 Person
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments | 4 | 5 | 5 |
Number of primary businesses |  |  | 2 |
Percentage of individual customer sales to consolidated net sales threshold for disclosure as major customer |  |  | 10.00% | 10.00%
Number of customers that individually accounted for 10 % or more of consolidated net sales | Person |  |  | 0 | 0

X
- Definition Number of customers that individually accounted for 10% or more of consolidated net sales. + References No definition available. + Details
Name: | jci_NumberOfCustomersThatIndividuallyAccountedForTenPercentOrMoreOfConsolidatedNetSales
Namespace Prefix: | jci_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of primary businesses. + References No definition available. + Details
Name: | jci_NumberOfPrimaryBusinesses
Namespace Prefix: | jci_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of individual customer sales to consolidated net sales, threshold for disclosure as major customer. + References No definition available. + Details
Name: | jci_PercentageOfIndividualCustomerSalesToConsolidatedNetSalesThresholdForDisclosureAsMajorCustomer
Namespace Prefix: | jci_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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