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Impairment of Long-Lived Assets (Details) - USD ($) $ in Millions | 12 Months Ended | 24 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020
Impairment of Long Lived Assets [Line Items] |  |  |  |
Asset Impairment Charges | $ 98 | $ 582 | $ 235 |
Impairment of Long-Lived Assets Held-for-use | 98 | 81 |  |
Building Solutions Asia Pacific |  |  |  |
Impairment of Long Lived Assets [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 4 | 24 |  |
Building Solutions EMEA/LA |  |  |  |
Impairment of Long Lived Assets [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 5 |  |  |
Building Solutions North America |  |  |  |
Impairment of Long Lived Assets [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 33 | 15 |  |
Global Products |  |  |  |
Impairment of Long Lived Assets [Line Items] |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  | 15 | $ 235 | $ 250
Impairment of Long-Lived Assets Held-for-use | 50 | $ 42 |  |
Corporate |  |  |  |
Impairment of Long Lived Assets [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | $ 6 |  |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2611-110228 + Details
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