Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Feb. 28, 2022	Nov. 30, 2021	Aug. 31, 2021	Feb. 28, 2021	Nov. 30, 2020	Aug. 31, 2020
Statement of Stockholders' Equity [Abstract]
Dividends declared and paid per share	$ 0.40	$ 0.40	$ 0.38	$ 0.38	$ 0.38	$ 0.36