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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends per share paid (in dollars per share)	$ 0.52	$ 0.52	$ 0.52
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