BUSINESS SEGMENTS - Schedule of Segment Reporting Information, by Segment Geographic Region Item (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 8,167,933	$ 7,864,758	$ 8,328,909
Property, plant and equipment, net	1,107,649	1,092,471
United States
Segment Reporting Information [Line Items]
Net sales	5,296,482	5,803,373	7,540,015
Property, plant and equipment, net	564,171	569,641
Germany
Segment Reporting Information [Line Items]
Net sales	1,494,419	836,151	1,687
Property, plant and equipment, net	444,981	424,333
Other Europe
Segment Reporting Information [Line Items]
Net sales	966,023	636,105	4,358
Property, plant and equipment, net	93,220	92,553
Canada
Segment Reporting Information [Line Items]
Net sales	377,053	561,172	776,068
Other foreign
Segment Reporting Information [Line Items]
Net sales	33,956	27,957	$ 6,781
Other
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 5,277	$ 5,944