Business Segment, Geographic and Customer Information - Additional Information (Detail)	12 Months Ended
Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Segment Reporting Information [Line Items]
Sales Percentage Represented By Major Customers	3.00%
Percentage Of Export Sales From Domestic To Total Net Sales	7.40%	7.90%	6.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration