Joint Venture (Accounts Receivable, Accounts Payable, and Other Assets Related to JV) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Schedule Of Equity Method Investments [Line Items]
Accounts receivable	$ 485,227	$ 368,769
Accounts payable	234,328	230,519
Woodward and General Electric Joint Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Other assets	16,028	8,181
Woodward and General Electric Joint Venture [Member] | Related Party [Member]
Schedule Of Equity Method Investments [Line Items]
Accounts receivable	3,666	4,172
Accounts payable	$ 6,276	$ 4,069