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Acquisitions and Divestitures (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Sep. 30, 2023
Business Acquisition [Line Items] |  |  |
Cash paid for business acquisition | $ (1) | $ 260 |
Goodwill | 17,676 |  | $ 17,936
Global Products |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill | 5,426 |  | 5,491
Building Solutions Asia Pacific |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill | 1,177 |  | 1,179
Building Solutions EMEA/LA |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill | $ 1,686 |  | $ 1,885
Individually Immaterial Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Purchase price, net of cash acquired |  | 306 |
Cash paid for business acquisition |  | 260 |
Individually Immaterial Acquisitions | Global Products |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | 121 |
Individually Immaterial Acquisitions | Building Solutions Asia Pacific |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | 51 |
Individually Immaterial Acquisitions | Building Solutions EMEA/LA |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 12 |

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