Inventories - Schedule of Major Classifications of Inventories (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jul. 31, 2022
Inventory [Line Items]
Work in process	$ 347,744	$ 397,495
Raw materials	705,853	838,474
Chassis	620,917	293,375
Subtotal	2,015,399	1,892,225
Excess of FIFO costs over LIFO costs	(150,752)	(137,452)
Total inventories, net	1,864,647	1,754,773
Recreational vehicles
Inventory [Line Items]
Finished products	221,577	236,311
Other
Inventory [Line Items]
Finished products	$ 119,308	$ 126,570