XML 81 R66.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Income Taxes - Tax Jurisdictions and Years Currently under Audit Exam (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2018
Income Tax Examination [Line Items] |  |  |
Estimated benefit to tax expense |  | $ 25 |
UNITED STATES | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam |  |  | 2015
UNITED STATES | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam |  |  | 2016
BELGIUM | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2015 |  |
BELGIUM | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2016 |  |
Brazil | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2011 |  |
Brazil | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2012 |  |
CANADA | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2013 |  |
CANADA | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2014 |  |
CHINA | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2008 |  |
CHINA | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2016 |  |
France | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2010 |  |
France | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2016 |  |
Germany | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2007 |  |
Germany | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2015 |  |
SPAIN | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2010 |  |
SPAIN | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2014 |  |
SWITZERLAND | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2011 |  |
SWITZERLAND | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2014 |  |
United Kingdom | Earliest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2011 |  |
United Kingdom | Latest tax year under exam |  |  |
Income Tax Examination [Line Items] |  |  |
Tax years currently under audit exam | 2015 |  |

X
- Definition Estimated amount of benefit resulting from favorable tax position. + References No definition available. + Details
Name: | jci_IncomeTaxExaminationestimateofpossiblebenefit
Namespace Prefix: | jci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_IncomeTaxExaminationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax year being audited in the income tax examination, in CCYY format. + References No definition available. + Details
Name: | us-gaap_IncomeTaxExaminationYearUnderExamination
Namespace Prefix: | us-gaap_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_EarliestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=us-gaap_LatestTaxYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_BE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_BR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_FR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_DE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_ES
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_CH
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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