Consolidated Statements of Comprehensive Income - Unaudited - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Statement of Comprehensive Income [Abstract]
Net income		$ 96,643	$ 88,686	$ 197,849	$ 182,643
Other comprehensive income, net of tax:
Net unrealized (loss) gain on cash flow hedges	[1]	1,303	(208)	1,187	1,843
Foreign currency translation adjustments		9,277	(1,565)	9,610	6,222
Other comprehensive gain (loss)		10,580	(1,773)	10,797	8,065
Comprehensive income		$ 107,223	$ 86,913	$ 208,646	$ 190,708

[1] For the three and six months ended February 28, 2021, the net unrealized gain on cash flow hedges were net of a tax expense of $441 thousand and a tax expense of $400 thousand, respectively. For the three months ended February 29, 2020, the net unrealized loss on cash flow hedges were net of a tax benefit of $73 thousand and for the six months ended February 29, 2020, the net unrealized gain on cash flow hedges were net of a tax expense of $641 thousand.