Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 4,657,517	$ 3,459,264	$ 12,490,759	$ 8,724,412
Operating segments | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	4,417,184	3,395,735	11,901,667	8,567,761
Operating segments | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	3,693,182	2,501,495	9,820,938	6,337,570
Operating segments | Europe | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	724,002	894,240	2,080,729	2,230,191
Operating segments | North American Towables | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	2,640,137	1,726,102	6,866,059	4,491,327
Operating segments | Travel Trailers | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	1,655,846	1,060,058	4,316,049	2,729,317
Operating segments | Fifth Wheels | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	984,291	666,044	2,550,010	1,762,010
Operating segments | North American Motorized | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	1,053,045	775,393	2,954,879	1,846,243
Operating segments | Class A | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	474,674	323,547	1,314,067	704,230
Operating segments | Class C | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	335,444	342,425	1,057,015	912,124
Operating segments | Class B | North America | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	242,927	109,421	583,797	229,889
Operating segments | Motorcaravan | Europe | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	389,914	489,702	1,057,039	1,227,182
Operating segments | Campervan | Europe | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	150,157	236,988	520,778	529,500
Operating segments | Caravan | Europe | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	114,772	84,074	266,605	210,923
Operating segments | Other RV-related | Europe | Recreational vehicles
Disaggregation of Revenue [Line Items]
Net sales	69,159	83,476	236,307	262,586
Other, net
Disaggregation of Revenue [Line Items]
Net sales	383,170	106,960	935,146	262,381
Intercompany eliminations
Disaggregation of Revenue [Line Items]
Net sales	$ (142,837)	$ (43,431)	$ (346,054)	$ (105,730)