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Revenue Recognition (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Oct. 31, 2021 | Oct. 31, 2020
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 3,958,224 | $ 2,537,360
Operating segments | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 3,798,859 | 2,488,387
Operating segments | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 3,165,862 | 1,885,899
Operating segments | European | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 632,997 | 602,488
Operating segments | Travel Trailers | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 1,409,624 | 837,900
Operating segments | Fifth Wheels | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 831,210 | 554,144
Operating segments | North American Towables | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 2,240,834 | 1,392,044
Operating segments | Class A | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 409,499 | 158,555
Operating segments | Class C | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 360,006 | 275,399
Operating segments | Class B | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 155,523 | 59,901
Operating segments | North American Motorized | North America | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 925,028 | 493,855
Operating segments | Motorcaravan | European | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 316,264 | 318,343
Operating segments | Campervan | European | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 177,783 | 143,400
Operating segments | Caravan | European | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 60,680 | 55,195
Operating segments | Other RV-related | European | Recreational vehicles |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 78,270 | 85,550
Other |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 257,830 | 80,707
Intercompany eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | $ (98,465) | $ (31,734)

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