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Intangible Assets and Goodwill - Components of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands | Apr. 30, 2021 | Jul. 31, 2020
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Cost | $ 1,406,004 | $ 1,255,441
Accumulated amortization | 429,743 | 340,717
Dealer networks/customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 867,483 | 766,198
Accumulated amortization | 309,523 | 252,320
Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 313,309 | 275,775
Accumulated amortization | 59,037 | 47,743
Design technology and other intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 219,012 | 213,468
Accumulated amortization | 57,537 | 40,654
Backlog |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 4,800 | 0
Accumulated amortization | 3,471 | 0
Non-compete agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 1,400 | 0
Accumulated amortization | $ 175 | $ 0

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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