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Business Segments - Schedule of Reporting Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Jul. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Net sales | $ 2,537,360 | $ 2,158,785 |
Income (loss) from continuing operations before income taxes | 146,319 | 68,634 |
Total assets | 5,860,922 |  | $ 5,771,460
Depreciation and amortization expense, total | 54,239 | 50,207 |
Capital acquisitions | 22,852 | 30,023 |
Operating segments | Recreational vehicles |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 2,488,387 | 2,109,784 |
Income (loss) from continuing operations before income taxes | 177,240 | 103,073 |
Total assets | 5,314,980 |  | 5,112,209
Depreciation and amortization expense, total | 50,900 | 47,248 |
Capital acquisitions | 21,047 | 28,870 |
Operating segments | Recreational vehicles | North American |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,885,899 | 1,616,777 |
Income (loss) from continuing operations before income taxes | 182,746 | 126,097 |
Total assets | 2,342,270 |  | 2,010,138
Depreciation and amortization expense, total | 19,577 | 19,765 |
Capital acquisitions | 11,153 | 13,843 |
Operating segments | Recreational vehicles | North American | North American Towables |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,392,044 | 1,200,888 |
Income (loss) from continuing operations before income taxes | 141,179 | 104,322 |
Total assets | 1,698,128 |  | 1,529,913
Depreciation and amortization expense, total | 15,807 | 16,271 |
Capital acquisitions | 9,408 | 11,275 |
Operating segments | Recreational vehicles | North American | North American Motorized |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 493,855 | 415,889 |
Income (loss) from continuing operations before income taxes | 41,567 | 21,775 |
Total assets | 644,142 |  | 480,225
Depreciation and amortization expense, total | 3,770 | 3,494 |
Capital acquisitions | 1,745 | 2,568 |
Operating segments | Recreational vehicles | European |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 602,488 | 493,007 |
Income (loss) from continuing operations before income taxes | (5,506) | (23,024) |
Total assets | 2,972,710 |  | 3,102,071
Depreciation and amortization expense, total | 31,323 | 27,483 |
Capital acquisitions | 9,894 | 15,027 |
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 80,707 | 73,566 |
Income (loss) from continuing operations before income taxes | 11,490 | 11,751 |
Total assets | 236,081 |  | 212,378
Depreciation and amortization expense, total | 2,911 | 2,511 |
Capital acquisitions | 1,444 | 655 |
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Income (loss) from continuing operations before income taxes | (42,411) | (46,190) |
Total assets | 309,861 |  | $ 446,873
Depreciation and amortization expense, total | 428 | 448 |
Capital acquisitions | 361 | 498 |
Intercompany eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | $ (31,734) | $ (24,565) |

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