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Business Segments And Foreign Operations (Schedule Of Net Sales By Product Group) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014
Revenue from External Customer [Line Items]
Net sales	$ 97,331us-gaap_SalesRevenueNet	$ 94,184us-gaap_SalesRevenueNet	$ 193,684us-gaap_SalesRevenueNet	$ 189,725us-gaap_SalesRevenueNet
Multi-purpose maintenance products [Member]
Revenue from External Customer [Line Items]
Net sales	86,589us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_MultiPurposeMaintenanceProductsMember	83,804us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_MultiPurposeMaintenanceProductsMember	171,493us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_MultiPurposeMaintenanceProductsMember	167,790us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_MultiPurposeMaintenanceProductsMember
Homecare and cleaning products [Member]
Revenue from External Customer [Line Items]
Net sales	$ 10,742us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_HomecareAndCleaningProductsMember	$ 10,380us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_HomecareAndCleaningProductsMember	$ 22,191us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_HomecareAndCleaningProductsMember	$ 21,935us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = wdfc_HomecareAndCleaningProductsMember

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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