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Business Segments - Schedule of Financial Information By Geographic Area (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | $ 4,136 | $ 3,388
Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 2,087 | 1,775
AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 1,241 | 994
Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 808 | 619
Intelligent Devices |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 2,822 | 2,539
Intelligent Devices | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 1,458 | 1,369
Intelligent Devices | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 873 | 746
Intelligent Devices | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 491 | 424
Intelligent Devices | Operating Segments | Final Control |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 940 | 862
Intelligent Devices | Operating Segments | Final Control | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 454 | 446
Intelligent Devices | Operating Segments | Final Control | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 370 | 308
Intelligent Devices | Operating Segments | Final Control | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 116 | 108
Intelligent Devices | Operating Segments | Measurement & Analytical |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 947 | 749
Intelligent Devices | Operating Segments | Measurement & Analytical | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 475 | 396
Intelligent Devices | Operating Segments | Measurement & Analytical | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 325 | 246
Intelligent Devices | Operating Segments | Measurement & Analytical | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 147 | 107
Intelligent Devices | Operating Segments | Discrete Automation |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 613 | 618
Intelligent Devices | Operating Segments | Discrete Automation | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 286 | 291
Intelligent Devices | Operating Segments | Discrete Automation | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 162 | 175
Intelligent Devices | Operating Segments | Discrete Automation | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 165 | 152
Intelligent Devices | Operating Segments | Safety & Productivity |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 322 | 310
Intelligent Devices | Operating Segments | Safety & Productivity | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 243 | 236
Intelligent Devices | Operating Segments | Safety & Productivity | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 16 | 17
Intelligent Devices | Operating Segments | Safety & Productivity | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 63 | 57
Software and Control |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 1,314 | 849
Software and Control | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 629 | 406
Software and Control | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 368 | 248
Software and Control | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 317 | 195
Software and Control | Operating Segments | Control Systems & Software |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 675 | 606
Software and Control | Operating Segments | Control Systems & Software | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 325 | 294
Software and Control | Operating Segments | Control Systems & Software | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 209 | 185
Software and Control | Operating Segments | Control Systems & Software | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 141 | 127
Software and Control | Operating Segments | Test & Measurement |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 382 | 0
Software and Control | Operating Segments | Test & Measurement | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 164 | 0
Software and Control | Operating Segments | Test & Measurement | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 99 | 0
Software and Control | Operating Segments | Test & Measurement | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 119 | 0
Software and Control | Operating Segments | AspenTech |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 257 | 243
Software and Control | Operating Segments | AspenTech | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 140 | 112
Software and Control | Operating Segments | AspenTech | AMEA |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | 60 | 63
Software and Control | Operating Segments | AspenTech | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Sales, excluding intersegment eliminations | $ 57 | $ 68

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