Consolidated Statements of Comprehensive Income - Unaudited - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Statement of Comprehensive Income [Abstract]
Net income		$ 101,216	$ 92,265	$ 283,859	$ 261,263
Other comprehensive (loss), net of tax
Net unrealized (loss) gain on cash flow hedges	[1]	(3,948)	(160)	(2,105)	1,405
Foreign currency translation adjustments		(4,633)	(11,326)	1,589	(15,804)
Other comprehensive (loss)		(8,581)	(11,486)	(516)	(14,399)
Comprehensive income		92,635	80,779	283,343	246,864
Unrealized (loss) gain on cash flow hedges, net of tax benefit (expense)		$ 1,337	$ 65	$ 696	$ (702)

[1] For the three and nine months ended May 31, 2020, the net unrealized loss on cash flow hedges were net of a tax benefit of $1,337 thousand and $696 thousand, respectively. For the three and nine months ended May 31, 2019, the net unrealized loss and gain on cash flow hedges were net of a tax benefit of $65 thousand and a tax expense of $702 thousand, respectively.