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Revenue (Narrative - Performance Obligations) (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Remaining performance obligation amount | $ 2,120,096 | $ 1,558,588
Material Rights [Member] |  |
Remaining performance obligation amount | $ 481,417 | $ 448,370

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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | srt_ProductOrServiceAxis=wwd_MaterialRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |