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Other Liabilities (Schedule of Other Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Sep. 30, 2021
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Other Liabilities Noncurrent [Abstract] |  |  |
Net accrued retirement benefits, less amounts recognized within accrued liabilities |  | $ 106,815 | $ 107,074
Total unrecognized tax benefits |  | 11,392 | 13,412
Noncurrent income taxes payable |  | 16,257 | 16,257
Deferred economic incentives | [1] | 7,918 | 8,173
Cross-currency swap derivative liability |  | 37,426 | 50,185
Operating lease liabilities |  | 16,294 | 14,770
Net noncurrent contract liabilities |  | 389,437 | 386,324
Other |  | 10,766 | 21,713
Other liabilities |  | $ 596,305 | $ 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.

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- Definition Aggregate carrying amount, as of the balance sheet date, of economic incentives from various state and local taxing authorities not included in income tax expense related to capital expansion projects. Such amounts are initially recorded as deferred credits and will be recognized as a reduction to expense over the economic lives of the related capital expansion projects. + References No definition available. + Details
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