Revenue - Schedule of Revenues by Segment and Major Source (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	$ 687,993	$ 619,985	$ 590,557
Total maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	665,942	590,966
WD-40 Multi-Use Product
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	532,651	477,961
WD-40 Specialist
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	99,083	81,962
Other maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	34,208	31,043
HCCP
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	22,051	29,019	$ 32,521
Americas
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	326,177	290,599
Americas \| Total maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	313,738	276,834
Americas \| WD-40 Multi-Use Product
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	254,482	224,811
Americas \| WD-40 Specialist
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	40,219	34,990
Americas \| Other maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	19,037	17,033
Americas \| HCCP
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	12,439	13,765
EIMEA
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	259,290	236,434
EIMEA \| Total maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	259,290	230,218
EIMEA \| WD-40 Multi-Use Product
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	200,662	181,604
EIMEA \| WD-40 Specialist
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	44,543	35,651
EIMEA \| Other maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	14,085	12,963
EIMEA \| HCCP
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	0	6,216
Asia-Pacific
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	102,526	92,952
Asia-Pacific \| Total maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	92,914	83,914
Asia-Pacific \| WD-40 Multi-Use Product
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	77,507	71,546
Asia-Pacific \| WD-40 Specialist
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	14,321	11,321
Asia-Pacific \| Other maintenance products
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	1,086	1,047
Asia-Pacific \| HCCP
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total net sales	$ 9,612	$ 9,038