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BUSINESS SEGMENTS - Schedule of Financial Information By Geographic Area (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | $ 4,395 | $ 3,962 | $ 12,924 | $ 11,127
Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 2,206 | 1,994 | 6,485 | 5,729
AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,312 | 1,211 | 3,859 | 3,318
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 877 | 757 | 2,580 | 2,080
Intelligent Devices |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 2,997 | 2,979 | 8,880 | 8,442
Intelligent Devices | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,553 | 1,561 | 4,599 | 4,462
Intelligent Devices | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 915 | 900 | 2,706 | 2,512
Intelligent Devices | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 529 | 518 | 1,575 | 1,468
Intelligent Devices | Operating Segments | Final Control |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,046 | 1,035 | 3,037 | 2,889
Intelligent Devices | Operating Segments | Final Control | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 509 | 498 | 1,476 | 1,438
Intelligent Devices | Operating Segments | Final Control | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 398 | 399 | 1,172 | 1,069
Intelligent Devices | Operating Segments | Final Control | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 139 | 138 | 389 | 382
Intelligent Devices | Operating Segments | Measurement & Analytical |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 982 | 913 | 2,942 | 2,550
Intelligent Devices | Operating Segments | Measurement & Analytical | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 488 | 482 | 1,475 | 1,333
Intelligent Devices | Operating Segments | Measurement & Analytical | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 345 | 303 | 1,004 | 853
Intelligent Devices | Operating Segments | Measurement & Analytical | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 149 | 128 | 463 | 364
Intelligent Devices | Operating Segments | Discrete Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 618 | 668 | 1,863 | 1,969
Intelligent Devices | Operating Segments | Discrete Automation | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 294 | 312 | 874 | 914
Intelligent Devices | Operating Segments | Discrete Automation | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 154 | 180 | 477 | 539
Intelligent Devices | Operating Segments | Discrete Automation | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 170 | 176 | 512 | 516
Intelligent Devices | Operating Segments | Safety & Productivity |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 351 | 363 | 1,038 | 1,034
Intelligent Devices | Operating Segments | Safety & Productivity | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 262 | 269 | 774 | 777
Intelligent Devices | Operating Segments | Safety & Productivity | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 18 | 18 | 53 | 51
Intelligent Devices | Operating Segments | Safety & Productivity | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 71 | 76 | 211 | 206
Software and Control |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 1,398 | 983 | 4,044 | 2,685
Software and Control | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 653 | 433 | 1,886 | 1,267
Software and Control | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 397 | 311 | 1,153 | 806
Software and Control | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 348 | 239 | 1,005 | 612
Software and Control | Operating Segments | Control Systems & Software |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 700 | 663 | 2,062 | 1,892
Software and Control | Operating Segments | Control Systems & Software | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 326 | 322 | 972 | 930
Software and Control | Operating Segments | Control Systems & Software | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 224 | 207 | 650 | 578
Software and Control | Operating Segments | Control Systems & Software | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 150 | 134 | 440 | 384
Software and Control | Operating Segments | Test & Measurement |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 355 | 0 | 1,104 | 0
Software and Control | Operating Segments | Test & Measurement | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 160 | 0 | 486 | 0
Software and Control | Operating Segments | Test & Measurement | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 98 | 0 | 295 | 0
Software and Control | Operating Segments | Test & Measurement | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 97 | 0 | 323 | 0
Software and Control | Operating Segments | AspenTech |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 343 | 320 | 878 | 793
Software and Control | Operating Segments | AspenTech | Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 167 | 111 | 428 | 337
Software and Control | Operating Segments | AspenTech | AMEA |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | 75 | 104 | 208 | 228
Software and Control | Operating Segments | AspenTech | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales, excluding intersegment eliminations | $ 101 | $ 105 | $ 242 | $ 228

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