XML 82 R72.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Equity and Noncontrolling Interests Equity and Noncontrolling Interests - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | Jun. 30, 2018 | Jun. 30, 2017 | Sep. 30, 2016
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Deferred tax asset from stock options exercised and restricted stock vestings |  | $ 179 |  |  |  |  |
Stock repurchase program, authorized amount |  | $ 1,000 |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 56 |  | $ 307 |  | $ 255 | $ 426 |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | 1,100 |  |  |  | 1,100 |  |
Post Merger Stock Repurchase Program [Member] |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  | $ 1,000
Parent |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stockholder's equity, spin-off of Adient |  |  |  | $ (4,020) | 0 | (4,038) |
Treasury Stock, Value, Acquired, Cost Method | $ 56 |  | $ 307 |  | $ 255 | $ 426 |

X
- Definition Deferred tax asset from stock options exercised and restricted stock vestings on a modified retrospective basis through a cumulative-effect adjustment to retained earnings. + References No definition available. + Details
Name: | jci_Deferredtaxassetfromstockoptionsexercisedandrestrictedstockvestings
Namespace Prefix: | jci_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Stockholder's equity, spin-off of Adient + References No definition available. + Details
Name: | jci_StockholdersequityspinoffofAdient
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_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_ParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |