INVENTORIES - Schedule of Major Classifications of Inventories (Details) - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021
Inventory [Line Items]
Work in process	$ 397,495	$ 376,594
Raw materials	838,474	602,106
Chassis	293,375	292,921
Subtotal	1,892,225	1,444,274
Excess of FIFO costs over LIFO costs	(137,452)	(74,890)
Inventories, net	1,754,773	1,369,384
Recreational vehicles
Inventory [Line Items]
Finished goods	236,311	114,843
Other
Inventory [Line Items]
Finished goods	$ 126,570	$ 57,810