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Business Segments Information (Financial Information) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | $ 969 | $ 854 | $ 822
Capital expenditures | 581 | 538 | 594
Operating Segments [Member] | Automation Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 632 | 557 | 535
Capital expenditures | 325 | 308 | 297
Operating Segments [Member] | Commercial & Residential Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 267 | 261 | 247
Capital expenditures | 237 | 216 | 281
Operating Segments [Member] | Climate Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 191 | 184 | 176
Capital expenditures | 143 | 158 | 222
Operating Segments [Member] | Tools & Home Products [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 76 | 77 | 71
Capital expenditures | 94 | 58 | 59
Corporate, Non-Segment [Member] | Corporate and other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 70 | 36 | 40
Capital expenditures | $ 19 | $ 14 | $ 16

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