XML 107 R89.htm IDEA: XBRL DOCUMENT
v3.21.2

Equity and Noncontrolling Interests Equity Attributable to Johnson Controls and Noncontrolling Interests (Additional Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2020
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Stock Repurchase Program, Increase in Authorized Amount | $ 4,000 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  | $ 5,100 |  |  | $ 2,000
Repurchases and retirements of ordinary shares |  | 1,307 | $ 2,204 | $ 5,983 |
Stock Repurchased and Retired During Period Value Tender Offer |  |  |  | 4,035 |
Stock Repurchased and Retired During Period Value Open Market |  |  |  | 1,948 |
Parent |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Repurchases and retirements of ordinary shares |  | 1,307 | 2,204 | 5,983 |
Stockholders' Equity, Total |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Repurchases and retirements of ordinary shares |  | $ 1,307 | $ 2,204 | $ 5,983 |

X
- Definition Stock Repurchase Program, Increase in Authorized Amount + References No definition available. + Details
Name: | jci_StockRepurchaseProgramIncreaseInAuthorizedAmount
Namespace Prefix: | jci_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Stock Repurchased and Retired During Period Value, Open Market + References No definition available. + Details
Name: | jci_StockRepurchasedandRetiredDuringPeriodValueOpenMarket
Namespace Prefix: | jci_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Stock Repurchased and Retired During Period Value, Tender Offer + References No definition available. + Details
Name: | jci_StockRepurchasedandRetiredDuringPeriodValueTenderOffer
Namespace Prefix: | jci_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 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 value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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