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GOODWILL AND INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Changes in Carrying Value of Goodwill | The following is a summary of changes in the carrying value of goodwill by segment for the fiscal years ended September 30, 2024 and 2025 (in millions):
| Power & Control |  | Airframe |  | Non-aviation |  | Total
Balance at September 30, 2023 | $ | 4,208 |  |  | $ | 4,701 |  |  | $ | 79 |  |  | $ | 8,988 |
Goodwill acquired during the period | 786 |  |  | 563 |  |  | — |  |  | 1,349 |
Purchase price allocation adjustments (1) | — |  |  | 35 |  |  | — |  |  | 35 |
Currency translation adjustments and other | 40 |  |  | 7 |  |  | — |  |  | 47 |
Balance at September 30, 2024 | 5,034 |  |  | 5,306 |  |  | 79 |  |  | 10,419 |
Goodwill acquired during the period | 189 |  |  | 13 |  |  | — |  |  | 202 |
Purchase price allocation adjustments (2) | 18 |  |  | (56) |  |  | — |  |  | (38) |
Currency translation adjustments and other | 32 |  |  | (3) |  |  | — |  |  | 29 |
Balance at September 30, 2025 | $ | 5,273 |  |  | $ | 5,260 |  |  | $ | 79 |  |  | $ | 10,612 |
(1)Primarily related to the opening balance sheet adjustments recorded from the fiscal 2023 acquisition of Calspan Corporation within the allowable measurement period (not to exceed one year). (2)Primarily related to the opening balance sheet adjustments recorded from the acquisition of Raptor Scientific (Airframe) completed during the fourth quarter of fiscal 2024 and CPI's Electron Device Business (Power & Control) completed during the third quarter of fiscal 2024, within the allowable measurement period (not to exceed one year).
Schedule of Intangible Assets | Other intangible assets–net in the consolidated balance sheets consist of the following at September 30 (in millions):
| 2025 |  | 2024
| Gross Carrying Amount |  | Accumulated Amortization |  | Net |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net
Trademarks and trade names | $ | 1,162 |  |  | $ | — |  |  | $ | 1,162 |  |  | $ | 1,165 |  |  | $ | — |  |  | $ | 1,165 |
Technology | 2,647 |  |  | 1,137 |  |  | 1,510 |  |  | 2,510 |  |  | 1,003 |  |  | 1,507 |
Order backlog | 59 |  |  | 28 |  |  | 31 |  |  | 61 |  |  | 13 |  |  | 48 |
Customer relationships | 971 |  |  | 225 |  |  | 746 |  |  | 895 |  |  | 175 |  |  | 720 |
Other | 12 |  |  | 7 |  |  | 5 |  |  | 12 |  |  | 6 |  |  | 6 |
Total | $ | 4,851 |  |  | $ | 1,397 |  |  | $ | 3,454 |  |  | $ | 4,643 |  |  | $ | 1,197 |  |  | $ | 3,446 |
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Schedule of Acquired Indefinite-lived Intangible Assets by Major Class | Intangible assets acquired during the fiscal year ended September 30, 2025 are summarized in the table below (in millions):
| Gross Amount |  | Amortization Period
Intangible assets not subject to amortization: |  |  |
Trademarks and trade names | $ | 11 |  |  |
Intangible assets subject to amortization: |  |  |
Technology & Other | 71 |  |  | 10 to 20 years
Order backlog | 17 |  |  | 1 year
Customer relationships | 37 |  |  | 10 to 20 years
| 125 |  |  |
Total | $ | 136 |  |  |
Schedule of Aggregate Amortization Expense | Information regarding the amortization expense of amortizable intangible assets is detailed below (in millions): Annual Amortization Expense:
Fiscal Years Ended September 30, |
2025 | $ | 201 |
2024 | 161 |
2023 | 139 |
Schedule of Finite-Lived Intangible Assets, Future Amortization | Estimated Amortization Expense:
Fiscal Years Ended September 30, |
2026 | $ | 203 |
2027 | 187 |
2028 | 179 |
2029 | 178 |
2030 | 170 |

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