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RESTRUCTURING COSTS - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 USD ($) position facilty | Sep. 30, 2023 USD ($) position facilty | Sep. 30, 2022 USD ($) facilty position | Sep. 30, 2025 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs | $ 228 | $ 72 | $ 75 |
Number of positions eliminated | position | 2,250 | 700 | 2,150 |
Total number of facilities exited | facilty | 22 | 10 | 7 |
Costs incurred related to restructuring actions | $ 16 | $ 20 | $ 40 |
Corporate and other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs | 51 | $ 14 | $ 13 |
Corporate and other | National Instruments |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs | $ 43 |  |  |
Forecast |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs, expected future cost |  |  |  | $ 120

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