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BUSINESS SEGMENTS - Schedule of Financial Information By Geographic Area (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | $ 4,393 | $ 3,777 | $ 8,529 | $ 7,165
Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 2,192 | 1,960 | 4,279 | 3,735
AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,306 | 1,113 | 2,547 | 2,107
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 895 | 704 | 1,703 | 1,323
Intelligent Devices |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 3,061 | 2,924 | 5,883 | 5,463
Intelligent Devices | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,588 | 1,532 | 3,046 | 2,901
Intelligent Devices | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 918 | 866 | 1,791 | 1,612
Intelligent Devices | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 555 | 526 | 1,046 | 950
Intelligent Devices | Operating Segments | Final Control |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,051 | 992 | 1,991 | 1,854
Intelligent Devices | Operating Segments | Final Control | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 513 | 494 | 967 | 940
Intelligent Devices | Operating Segments | Final Control | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 404 | 362 | 774 | 670
Intelligent Devices | Operating Segments | Final Control | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 134 | 136 | 250 | 244
Intelligent Devices | Operating Segments | Measurement & Analytical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,013 | 888 | 1,960 | 1,637
Intelligent Devices | Operating Segments | Measurement & Analytical | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 512 | 455 | 987 | 851
Intelligent Devices | Operating Segments | Measurement & Analytical | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 334 | 304 | 659 | 550
Intelligent Devices | Operating Segments | Measurement & Analytical | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 167 | 129 | 314 | 236
Intelligent Devices | Operating Segments | Discrete Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 632 | 683 | 1,245 | 1,301
Intelligent Devices | Operating Segments | Discrete Automation | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 294 | 311 | 580 | 602
Intelligent Devices | Operating Segments | Discrete Automation | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 161 | 184 | 323 | 359
Intelligent Devices | Operating Segments | Discrete Automation | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 177 | 188 | 342 | 340
Intelligent Devices | Operating Segments | Safety & Productivity |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 365 | 361 | 687 | 671
Intelligent Devices | Operating Segments | Safety & Productivity | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 269 | 272 | 512 | 508
Intelligent Devices | Operating Segments | Safety & Productivity | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 19 | 16 | 35 | 33
Intelligent Devices | Operating Segments | Safety & Productivity | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 77 | 73 | 140 | 130
Software and Control |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,332 | 853 | 2,646 | 1,702
Software and Control | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 604 | 428 | 1,233 | 834
Software and Control | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 388 | 247 | 756 | 495
Software and Control | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 340 | 178 | 657 | 373
Software and Control | Operating Segments | Control Systems & Software |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 687 | 623 | 1,362 | 1,229
Software and Control | Operating Segments | Control Systems & Software | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 321 | 314 | 646 | 608
Software and Control | Operating Segments | Control Systems & Software | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 217 | 186 | 426 | 371
Software and Control | Operating Segments | Control Systems & Software | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 149 | 123 | 290 | 250
Software and Control | Operating Segments | Test & Measurement |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 367 | 0 | 749 | 0
Software and Control | Operating Segments | Test & Measurement | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 162 | 0 | 326 | 0
Software and Control | Operating Segments | Test & Measurement | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 98 | 0 | 197 | 0
Software and Control | Operating Segments | Test & Measurement | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 107 | 0 | 226 | 0
Software and Control | Operating Segments | AspenTech |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 278 | 230 | 535 | 473
Software and Control | Operating Segments | AspenTech | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 121 | 114 | 261 | 226
Software and Control | Operating Segments | AspenTech | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 73 | 61 | 133 | 124
Software and Control | Operating Segments | AspenTech | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | $ 84 | $ 55 | $ 141 | $ 123

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