Other Liabilities (Schedule of Other Liabilities) (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Sep. 30, 2024
Other Liabilities, Noncurrent [Abstract]
Net accrued retirement benefits, less amounts recognized within accrued liabilities		$ 90,821	$ 83,094
Total unrecognized tax benefits		13,465	10,104
Noncurrent income taxes payable		0	5,894
Deferred economic incentives	[1]	6,435	7,062
Noncurrent operating lease liabilities		20,177	22,670
Net noncurrent contract liabilities		431,235	424,609
Cross-currency swap derivative liability		30,892	10,562
Other		8,466	13,385
Other liabilities		$ 601,491	$ 577,380

[1] Woodward receives certain economic incentives from various state and local authorities related to capital expansion projects. Such amounts are initially recorded as deferred credits and are being recognized as a reduction to pre-tax expense over the economic lives of the related capital expansion projects.