Amount of Credit Facilities Expired

No definition available.

Name:	jci_AmountofCreditFacilitiesExpired
Namespace Prefix:	jci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Line-of-Credit Arrangement
-URI http://asc.fasb.org/extlink&oid=6517033

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20
-Article 5

+ Details

Name:	us-gaap_LinesOfCreditCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_RepaymentsOfLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying amount at the balance sheet date of borrowings from a bank, not elsewhere enumerated in the taxonomy, with a maturity within one year (or within one operating cycle if longer) from the date of borrowing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_ShortTermBankLoansAndNotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt and Financing Arrangements - Additional Information (Detail) € in Millions, $ in Millions, ¥ in Billions	3 Months Ended								12 Months Ended
	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2016 EUR (€)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 EUR (€)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2015 USD ($)	Mar. 31, 2016 EUR (€)	Jun. 30, 2015 JPY (¥)
500 Million USD Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Term	5 months
Short-term Bank Loans and Notes Payable	$ 500
7.7% due 2015
Debt Instrument [Line Items]
Extinguishment of Debt, Amount							$ 125
Debt Instrument, Interest Rate, Stated Percentage							7.70%
150 million USD floating rate term loan maturing in September 2015 [Member]
Debt Instrument [Line Items]
Debt Instrument, Term							7 months
Short-term Bank Loans and Notes Payable							$ 150
Extinguishment of Debt, Amount					$ 150
$35M revolving credit facility
Debt Instrument [Line Items]
Credit facility, expired				$ 35
Credit facility				35
Credit facility, amount drawn	$ 0
$100M revolving credit facility
Debt Instrument [Line Items]
Credit facility, expired				100
Credit facility				$ 100
100 Million USD floating rate term loan maturing in November 2016 [Member] [Domain]
Debt Instrument [Line Items]
Debt Instrument, Term		9 months	9 months
Short-term Bank Loans and Notes Payable		$ 100
37 Million Euro Revolving Credit Facility [Domain]
Debt Instrument [Line Items]
Credit facility, expired \| €			€ 37
100 Million Euro Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility \| €										€ 100
Debt Instrument, Term		9 months	9 months
200 Million USD floating rate term loan maturing in October 2016 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Term		10 months	10 months
Short-term Bank Loans and Notes Payable		$ 200
125 Million USD floating rate term loan maturing in October 2016 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Term		10 months	10 months
Short-term Bank Loans and Notes Payable		$ 125
$500M floating rate term loan, maturing Sep 2015
Debt Instrument [Line Items]
Debt Instrument, Term								9 months
Short-term Bank Loans and Notes Payable								$ 500
Extinguishment of Debt, Amount					500
$100M floating rate term loan, maturing Sep 2015
Debt Instrument [Line Items]
Debt Instrument, Term								9 months
Short-term Bank Loans and Notes Payable								$ 100
Extinguishment of Debt, Amount					100
$125 Million USD floating rate term loan maturing in September 2016 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Term				9 months
Short-term Bank Loans and Notes Payable				$ 125
$200 Million USD floating rate term loan maturing in September 2016 [Domain]
Debt Instrument [Line Items]
Debt Instrument, Term				9 months
Short-term Bank Loans and Notes Payable				$ 200
37 billion yen floating rate syndicated term loan maturing in June 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Term						5 years
Long-term Debt \| ¥											¥ 37
70 million euro floating rate credit facility [Member]
Debt Instrument [Line Items]
Credit facility \| €						€ 70
Repayments of Lines of Credit \| €						€ 32
90 million USD revolving credit facility [Member]
Debt Instrument [Line Items]
Credit facility		$ 90					$ 90
Debt Instrument, Term		1 year	1 year				1 year
Credit facility, amount drawn		$ 90					$ 90
Extinguishment of Debt, Amount					$ 90				$ 90
5.5% due 2016
Debt Instrument [Line Items]
Extinguishment of Debt, Amount		$ 800
Debt Instrument, Interest Rate, Stated Percentage		5.50%	5.50%
Contingent on consumation of Tyco merger [Domain] \| 2.0 billion USD revolving credit facility [Member] [Domain]
Debt Instrument [Line Items]
Credit facility		$ 2,000