SEGMENT INFORMATION - Geographic Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 2,085,508	$ 1,843,892	$ 1,591,445
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,265,002	1,106,602	952,423
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	223,809	215,369	190,044
Other European Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	316,034	268,910	237,656
All Other Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 280,663	$ 253,011	$ 211,322