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Revenue Recognition (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 2,003,133 | $ 1,290,576 | $ 4,161,918 | $ 3,046,552
Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,964,702 | 1,253,059 |  |
Operating Segments | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,964,702 | 1,253,059 | 4,074,486 | 2,963,355
Operating Segments | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,327,587 | 1,253,059 | 2,944,364 | 2,963,355
Operating Segments | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 637,115 | 0 | 1,130,122 | 0
Operating Segments | Travel Trailers And Other Towables | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 583,121 | 535,779 | 1,292,786 | 1,297,263
Operating Segments | Fifth Wheels Towables | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 400,786 | 345,785 | 892,009 | 863,399
Operating Segments | Towables | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 983,907 | 881,564 | 2,184,795 | 2,160,662
Operating Segments | Class A Motorized | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 125,474 | 173,488 | 287,206 | 400,762
Operating Segments | Class C Motorized | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 186,761 | 182,502 | 416,598 | 366,886
Operating Segments | Class B Motorized | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 31,445 | 15,505 | 55,765 | 35,045
Operating Segments | Motorized | North America | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 343,680 | 371,495 | 759,569 | 802,693
Operating Segments | Motorcaravan | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 382,422 | 0 | 664,155 | 0
Operating Segments | Campervan | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 97,923 | 0 | 175,520 | 0
Operating Segments | Caravan | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 69,909 | 0 | 130,941 | 0
Operating Segments | Other RV Related | Europe | Recreational vehicles |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 86,861 | 0 | 159,506 | 0
Corporate and Eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 57,745 | 55,114 | 131,311 | 128,962
Intercompany eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ (19,314) | $ (17,597) | $ (43,879) | $ (45,765)

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