Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 372,938	$ 352,790	$ 267,085
Other comprehensive income, net of tax:
Net unrealized gain (loss) on cash flow hedges	[1]	674	504	(7,288)
Foreign currency translation adjustments		34,577	(24,325)	(9,431)
Other comprehensive income (loss)		35,251	(23,821)	(16,719)
Comprehensive income		$ 408,189	$ 328,969	$ 250,366

[1] The unrealized gain (loss) on cash flow hedges disclosed above was net of tax (expense) benefit of ($251), ($387), and $3,518 for the fiscal years ended August 31, 2020, 2019 and 2018, respectively.