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Inventories - Schedule of Major Classifications of Inventories (Detail) - USD ($) $ in Thousands | Oct. 31, 2021 | Jul. 31, 2021
--- | --- | ---
Inventory [Line Items] |  |
Work in process | $ 432,513 | $ 376,594
Raw materials | 706,689 | 602,106
Chassis | 392,575 | 292,921
Subtotal | 1,750,087 | 1,444,274
Excess of FIFO costs over LIFO costs | (78,240) | (74,890)
Total inventories, net | 1,671,847 | 1,369,384
Recreational vehicles |  |
Inventory [Line Items] |  |
Finished products | 124,858 | 114,843
Other |  |
Inventory [Line Items] |  |
Finished products | $ 93,452 | $ 57,810

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