INTANGIBLE ASSETS, GOODWILL AND LONG-LIVED ASSETS - Components of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	Jul. 31, 2020	Jul. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Cost	$ 1,255,441	$ 1,216,035
Accumulated amortization	340,717	245,224
Dealer networks/customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	766,198	750,641
Accumulated amortization	252,320	191,017
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	275,775	268,778
Accumulated amortization	47,743	34,518
Design technology and other intangibles
Finite-Lived Intangible Assets [Line Items]
Cost	213,468	196,616
Accumulated amortization	$ 40,654	$ 19,689