CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 64,093	$ 83,348
Other comprehensive income, net of income taxes:
Foreign currency translation adjustment	(8,388)	6,924
Net unrealized gain (loss) on derivatives:
Unrealized holding gain	1,164	714
Reclassification for gain included in net earnings	(54)	(89)
Net unrealized gain on derivatives	1,110	625
Defined benefit obligation:
Amortization of prior services	(13)	(8)
Defined benefit obligation	(13)	(8)
Other comprehensive income (loss)	(7,291)	7,541
Comprehensive income	$ 56,802	$ 90,889