REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 16,312,525	$ 12,317,380	$ 8,167,933
Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	15,529,045	12,091,398	8,015,971
Operating Segments | Total North America
Disaggregation of Revenue [Line Items]
Net sales	12,641,592	8,891,319	5,530,580
Operating Segments | North American Towables
Disaggregation of Revenue [Line Items]
Net sales	8,661,945	6,221,928	4,140,482
Operating Segments | North American Motorized
Disaggregation of Revenue [Line Items]
Net sales	3,979,647	2,669,391	1,390,098
Operating Segments | European
Disaggregation of Revenue [Line Items]
Net sales	2,887,453	3,200,079	2,485,391
Operating Segments | Travel Trailers and Other | North American Towables
Disaggregation of Revenue [Line Items]
Net sales	5,430,526	3,791,235	2,449,239
Operating Segments | Fifth Wheels | North American Towables
Disaggregation of Revenue [Line Items]
Net sales	3,231,419	2,430,693	1,691,243
Operating Segments | Class A | North American Motorized
Disaggregation of Revenue [Line Items]
Net sales	1,779,295	1,052,982	495,520
Operating Segments | Class C | North American Motorized
Disaggregation of Revenue [Line Items]
Net sales	1,408,470	1,266,624	776,191
Operating Segments | Class B | North American Motorized
Disaggregation of Revenue [Line Items]
Net sales	791,882	349,785	118,387
Operating Segments | Motorcaravan | European
Disaggregation of Revenue [Line Items]
Net sales	1,457,226	1,779,906	1,505,353
Operating Segments | Campervan | European
Disaggregation of Revenue [Line Items]
Net sales	750,310	779,755	433,398
Operating Segments | Caravan | European
Disaggregation of Revenue [Line Items]
Net sales	365,902	292,708	273,475
Operating Segments | Other RV-related | European
Disaggregation of Revenue [Line Items]
Net sales	314,015	347,710	273,165
Other
Disaggregation of Revenue [Line Items]
Net sales	1,225,824	373,174	234,481
Intercompany eliminations
Disaggregation of Revenue [Line Items]
Net sales	$ (442,344)	$ (147,192)	$ (82,519)