INVENTORIES - Schedule of Major Classifications of Inventories (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jul. 31, 2022
Inventory [Line Items]
Work in process	$ 313,006	$ 397,495
Raw materials	563,614	838,474
Chassis	681,122	293,375
Subtotal	1,815,674	1,892,225
Excess of FIFO costs over LIFO costs	(162,604)	(137,452)
Inventories, net	1,653,070	1,754,773
Recreational vehicles
Inventory [Line Items]
Finished goods	164,456	236,311
Other
Inventory [Line Items]
Finished goods	$ 93,476	$ 126,570