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RESTRUCTURING COSTS - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Sep. 30, 2025
Restructuring [Line Items] |  |  |  |  |
Expense | $ 37 | $ 57 | $ 70 | $ 170 |
Restructuring costs included in cost of sales and selling and general and administrative expenses | 4 | 3 | 11 | 10 |
Corporate and other | AspenTech |  |  |  |  |
Restructuring [Line Items] |  |  |  |  |
Expense |  |  | 21 |  |
Corporate and other | National Instruments |  |  |  |  |
Restructuring [Line Items] |  |  |  |  |
Expense | $ 20 | $ 5 | $ 23 | $ 42 |
Forecast |  |  |  |  |
Restructuring [Line Items] |  |  |  |  |
Expected fiscal year restructuring expense |  |  |  |  | $ 140

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