XML 57 R43.htm IDEA: XBRL DOCUMENT
v3.19.3

Basis Of Presentation And Summary Of Significant Accounting Policies (Shipping And Handling Costs) (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract] |  |  |
Shipping and handling costs | $ 16.3 | $ 17.7 | $ 16.4

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Out-Bound Shipping And Handling Costs + References No definition available. + Details
Name: | wdfc_OutBoundShippingAndHandlingCosts
Namespace Prefix: | wdfc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration