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Revenue (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 3,459,264 | $ 1,681,735 | $ 8,724,412 | $ 5,843,653
Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3,395,735 | 1,652,771 |  |
Operating segments | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 3,395,735 | 1,652,771 | 8,567,761 | 5,727,257
Operating segments | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 2,501,495 | 1,037,428 | 6,337,570 | 3,981,792
Operating segments | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 894,240 | 615,343 | 2,230,191 | 1,745,465
Operating segments | Travel Trailers | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,060,058 | 455,434 | 2,729,317 | 1,748,220
Operating segments | Fifth Wheels | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 666,044 | 317,957 | 1,762,010 | 1,209,966
Operating segments | North American Towables | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,726,102 | 773,391 | 4,491,327 | 2,958,186
Operating segments | Class A | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 323,547 | 96,849 | 704,230 | 384,055
Operating segments | Class C | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 342,425 | 144,826 | 912,124 | 561,424
Operating segments | Class B | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 109,421 | 22,362 | 229,889 | 78,127
Operating segments | North American Motorized | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 775,393 | 264,037 | 1,846,243 | 1,023,606
Operating segments | Motorcaravan | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 489,702 | 380,023 | 1,227,182 | 1,044,178
Operating segments | Campervan | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 236,988 | 104,486 | 529,500 | 280,006
Operating segments | Caravan | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 84,074 | 65,790 | 210,923 | 196,731
Operating segments | Other RV-related | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 83,476 | 65,044 | 262,586 | 224,550
Corporate and eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 106,960 | 45,632 | 262,381 | 176,943
Intercompany eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ (43,431) | $ (16,668) | $ (105,730) | $ (60,547)

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