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Other Liabilities (Schedule of Other Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | ---
Other Liabilities Noncurrent [Abstract] |  |  |
Net accrued retirement benefits, less amounts recognized within accrued liabilities |  | $ 120,313 | $ 114,013
Total unrecognized tax benefits |  | 10,602 | 10,230
Noncurrent income taxes payable |  | 18,322 | 18,322
Deferred economic incentives | [1] | 8,852 | 9,105
Cross-currency swap derivative liability |  | 83,137 | 51,387
Operating lease liabilities |  | 15,683 | 14,569
Net noncurrent contract liabilities |  | 371,024 | 366,642
Other |  | 26,355 | 33,637
Other liabilities |  | $ 654,288 | $ 617,905
[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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