Business Segments - Schedule of Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021	Jul. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 4,657,517	$ 3,459,264	$ 12,490,759	$ 8,724,412
Income (loss) from continuing operations before income taxes	462,407	232,679	1,121,502	542,957
Total assets	7,735,500		7,735,500		$ 6,654,088
Depreciation and amortization expense, total	71,646	58,689	212,494	169,643
Capital acquisitions	55,664	33,140	172,087	81,201
Operating segments | Recreational vehicles
Segment Reporting Information [Line Items]
Net sales	4,417,184	3,395,735	11,901,667	8,567,761
Income (loss) from continuing operations before income taxes	463,549	266,466	1,190,350	645,223
Total assets	6,082,384		6,082,384		5,919,904
Depreciation and amortization expense, total	55,038	55,163	170,191	159,323
Capital acquisitions	45,891	31,355	150,051	76,367
Operating segments | Recreational vehicles | North America
Segment Reporting Information [Line Items]
Net sales	3,693,182	2,501,495	9,820,938	6,337,570
Income (loss) from continuing operations before income taxes	442,990	222,473	1,178,102	596,520
Total assets	3,516,400		3,516,400		2,944,083
Depreciation and amortization expense, total	23,537	23,912	70,281	65,141
Capital acquisitions	29,718	16,466	79,651	38,262
Operating segments | Recreational vehicles | North America | North American Towables
Segment Reporting Information [Line Items]
Net sales	2,640,137	1,726,102	6,866,059	4,491,327
Income (loss) from continuing operations before income taxes	326,697	167,693	868,874	456,752
Total assets	2,268,957		2,268,957		1,870,577
Depreciation and amortization expense, total	16,149	16,904	48,764	49,029
Capital acquisitions	19,833	9,750	54,446	26,071
Operating segments | Recreational vehicles | North America | North American Motorized
Segment Reporting Information [Line Items]
Net sales	1,053,045	775,393	2,954,879	1,846,243
Income (loss) from continuing operations before income taxes	116,293	54,780	309,228	139,768
Total assets	1,247,443		1,247,443		1,073,506
Depreciation and amortization expense, total	7,388	7,008	21,517	16,112
Capital acquisitions	9,885	6,716	25,205	12,191
Operating segments | Recreational vehicles | Europe
Segment Reporting Information [Line Items]
Net sales	724,002	894,240	2,080,729	2,230,191
Income (loss) from continuing operations before income taxes	20,559	43,993	12,248	48,703
Total assets	2,565,984		2,565,984		2,975,821
Depreciation and amortization expense, total	31,501	31,251	99,910	94,182
Capital acquisitions	16,173	14,889	70,400	38,105
Other, net
Segment Reporting Information [Line Items]
Net sales	383,170	106,960	935,146	262,381
Income (loss) from continuing operations before income taxes	46,910	16,667	93,531	37,801
Total assets	1,270,417		1,270,417		272,350
Depreciation and amortization expense, total	16,177	3,108	41,014	9,058
Capital acquisitions	9,272	1,427	21,452	4,087
Corporate
Segment Reporting Information [Line Items]
Income (loss) from continuing operations before income taxes	(48,052)	(50,454)	(162,379)	(140,067)
Total assets	382,699		382,699		$ 461,834
Depreciation and amortization expense, total	431	418	1,289	1,262
Capital acquisitions	501	358	584	747
Intercompany eliminations
Segment Reporting Information [Line Items]
Net sales	$ (142,837)	$ (43,431)	$ (346,054)	$ (105,730)