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Joint Venture (Accounts Receivable, Accounts Payable, and Other Assets Related to JV) (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Sep. 30, 2025
--- | --- | ---
Schedule Of Equity Method Investments [Line Items] |  |
Accounts receivable | $ 536,474 | $ 477,321
Accounts payable | 305,855 | 289,417
Woodward and General Electric Joint Venture [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
Other assets | 28,504 | 23,069
Woodward and General Electric Joint Venture [Member] | Related Party [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
Accounts receivable | 6,523 | 5,377
Accounts payable | $ 9,571 | $ 8,370

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