Other Liabilities (Schedule of Other Liabilities) (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Sep. 30, 2021
Other Liabilities Noncurrent [Abstract]
Net accrued retirement benefits, less amounts recognized within accrued liabilities		$ 101,994	$ 107,074
Total unrecognized tax benefits		11,753	13,412
Noncurrent income taxes payable		14,329	16,257
Deferred economic incentives	[1]	7,658	8,173
Cross-currency swap derivative liability		24,724	50,185
Operating lease liabilities		19,125	14,770
Net noncurrent contract liabilities		396,175	386,324
Other		10,522	21,713
Other liabilities		$ 586,280	$ 617,908

[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.