BUSINESS SEGMENTS (Long-Lived Assets by Geographic Area) (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 1,708,344	$ 1,599,218	$ 1,172,607
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	1,483,127	1,426,131	1,001,102
Poland
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	225,166	173,045	171,460
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 51	$ 42	$ 45