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Segment Information (Narrative) (Details) - Segment | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Entity Wide Revenue Major Customer [Line Items] |  |  |
Number of Reportable Segments | 2 |  |
RTX Corporation [Member] | Sales [Member] | Product Concentration Risk [Member] |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Percentage of total attributable to major customer | 9.00% | 10.00% | 11.00%
RTX Corporation [Member] | Trade Accounts Receivable [Member] | Product Concentration Risk [Member] |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Percentage of total attributable to major customer | 6.00% | 4.00% |

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