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REVENUE RECOGNITION (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ 12,317,380 | $ 8,167,933 | $ 7,864,758
Operating Segments |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 12,091,398 | 8,015,971 | 7,694,758
Operating Segments | Total North America |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 8,891,319 | 5,530,580 | 6,207,780
Operating Segments | North American Towables |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 6,221,928 | 4,140,482 | 4,558,451
Operating Segments | North American Motorized |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,669,391 | 1,390,098 | 1,649,329
Operating Segments | European |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 3,200,079 | 2,485,391 | 1,486,978
Operating Segments | Travel Trailers And Other Towables | North American Towables |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 3,791,235 | 2,449,239 | 2,710,308
Operating Segments | Fifth Wheels Towables | North American Towables |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 2,430,693 | 1,691,243 | 1,848,143
Operating Segments | Class A Motorized | North American Motorized |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,052,982 | 495,520 | 761,176
Operating Segments | Class C Motorized | North American Motorized |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,266,624 | 776,191 | 824,449
Operating Segments | Class B Motorized | North American Motorized |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 349,785 | 118,387 | 63,704
Operating Segments | Motorcaravan | European |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 1,779,906 | 1,505,353 | 960,155
Operating Segments | Campervan | European |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 779,755 | 433,398 | 201,089
Operating Segments | Caravan | European |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 292,708 | 273,475 | 172,144
Operating Segments | Other RV-related | European |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 347,710 | 273,165 | 153,590
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | 373,174 | 234,481 | 263,374
Intercompany Eliminations |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net sales | $ (147,192) | $ (82,519) | $ (93,374)

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