CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 28, 2018	Feb. 28, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends per share (in USD per share)	$ 0.12	$ 0.12	$ 0.24	$ 0.24