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BUSINESS SEGMENTS - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Sep. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | $ 4,553 | $ 4,380 |  | $ 13,161 | $ 12,873 |
Earnings (Loss) | 734 | 455 |  | 2,138 | 1,341 |
Gain on subordinated interest | 0 | 0 |  | 0 | 79 |
Eliminations/Interest | (95) | (56) |  | (145) | (157) |
Amortization of acquisition-related inventory step-up |  |  |  | 0 | 231 |
Loss on divestiture of business | 0 | 0 | $ 39 | 0 | 39 |
Acquisition and divestiture fees and related costs excluding stock compensation expense related items | 38 | 13 |  | 216 | 159 |
AspenTech |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Stock compensation | 24 |  |  | 30 |  |
National Instruments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  |  |  |  |  | $ 1,700
Earnings (Loss) |  |  |  |  |  | $ 170
Stock compensation | 2 | 9 |  | 7 | 53 |
Restructuring Charges | AspenTech |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Stock compensation | 20 |  |  | 21 |  |
Restructuring Charges | National Instruments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Stock compensation | 5 |  |  |  | 41 |
Operating Segments | Intelligent Devices |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 3,125 | 2,997 |  | 8,997 | 8,880 |
Earnings (Loss) | 704 | 693 |  | 2,115 | 2,019 |
Operating Segments | Software and Control |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 1,444 | 1,398 |  |  |  |
Earnings (Loss) | 241 | 129 |  |  |  |
Operating Segments | Final Control | Intelligent Devices |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 1,116 | 1,046 |  | 3,165 | 3,037 |
Earnings (Loss) | 267 | 253 |  | 770 | 706 |
Operating Segments | Measurement & Analytical | Intelligent Devices |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 1,014 | 982 |  | 2,992 | 2,942 |
Earnings (Loss) | 246 | 252 |  | 796 | 761 |
Operating Segments | Discrete Automation | Intelligent Devices |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 649 | 618 |  | 1,844 | 1,863 |
Earnings (Loss) | 118 | 109 |  | 333 | 322 |
Operating Segments | Safety & Productivity | Intelligent Devices |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 346 | 351 |  | 996 | 1,038 |
Earnings (Loss) | 73 | 79 |  | 216 | 230 |
Operating Segments | Control Systems & Software | Software and Control |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 1,083 | 1,043 |  | 3,138 | 2,940 |
Earnings (Loss) | 267 | 217 |  | 713 | 474 |
Operating Segments | Test & Measurement | Software and Control |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | 361 | 355 |  | 1,079 | 1,104 |
Earnings (Loss) | (26) | (88) |  | (63) | (245) |
Operating Segments | Software and Control | Software and Control |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales |  |  |  | 4,217 | 4,044 |
Earnings (Loss) |  |  |  | 650 | 229 |
Segment Reconciling |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Stock compensation | (71) | (56) |  | (198) | (203) |
Unallocated pension and postretirement costs | 27 | 38 |  | 82 | 107 |
Gain on subordinated interest | 0 | 0 |  | 0 | 79 |
Loss on Copeland note receivable | 0 | (279) |  | 0 | (279) |
Segment Reconciling | Related Party |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Interest income from related party | 0 | 24 |  | 0 | 86 |
Corporate and other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Earnings (Loss) | (72) | (38) |  | (366) | (540) |
Eliminations/Interest |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net sales | (16) | (15) |  | (53) | (51) |
Eliminations/Interest | $ (95) | $ (56) |  | $ (145) | $ (157) |

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