Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Stockholders' Equity Attributable to THOR	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interests
Beginning balance (in shares) at Jul. 31, 2021			65,651,570
Beginning balance at Jul. 31, 2021	$ 2,948,106	$ 2,921,843	$ 6,565	$ 460,482	$ 2,770,401	$ 44,621	$ (360,226)	$ 26,263
Beginning balance (in shares) at Jul. 31, 2021							10,285,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,138,243	1,137,804			1,137,804			439
Purchase of treasury shares (in shares)							1,944,243
Purchase of treasury shares	(165,107)	(165,107)					$ (165,107)
Restricted stock unit activity (in shares)			407,833				152,869
Restricted stock unit activity	(13,443)	(13,443)	$ 41	4,527			$ (18,011)
Cash dividends per common share	(94,944)	(94,944)			(94,944)
Stock compensation expense	31,421	31,421		31,421
Other comprehensive income (loss)	(227,661)	(226,228)				(226,228)		(1,433)
Dividend paid to non-controlling interest	(555)							(555)
Acquisitions	(15,406)	1,516		1,516				(16,922)
Ending balance (in shares) at Jul. 31, 2022			66,059,403
Ending balance at Jul. 31, 2022	3,600,654	3,592,862	$ 6,606	497,946	3,813,261	(181,607)	$ (543,344)	7,792
Ending balance (in shares) at Jul. 31, 2022							12,382,441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	374,240	374,271			374,271			(31)
Purchase of treasury shares (in shares)							549,532
Purchase of treasury shares	(42,007)	(42,007)					$ (42,007)
Restricted stock unit activity (in shares)			284,937				98,057
Restricted stock unit activity	(5,714)	(5,714)	$ 28	1,574			$ (7,316)
Cash dividends per common share	(95,969)	(95,969)			(95,969)
Stock compensation expense	39,512	39,512		39,512
Other comprehensive income (loss)	112,682	113,060				113,060		(378)
Ending balance (in shares) at Jul. 31, 2023			66,344,340
Ending balance at Jul. 31, 2023	$ 3,983,398	3,976,015	$ 6,634	539,032	4,091,563	(68,547)	$ (592,667)	7,383
Ending balance (in shares) at Jul. 31, 2023	13,030,030						13,030,030
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 265,400	265,308			265,308			92
Purchase of treasury shares (in shares)	720,997						720,997
Purchase of treasury shares	$ (68,387)	(68,387)					$ (68,387)
Restricted stock unit activity (in shares)			515,398				177,287
Restricted stock unit activity	(16,111)	(16,111)	$ 52	82			$ (16,245)
Cash dividends per common share	(102,137)	(102,137)			(102,137)
Stock compensation expense	37,901	37,901		37,901
Other comprehensive income (loss)	(26,011)	(25,159)				(25,159)		(852)
Ending balance (in shares) at Jul. 31, 2024			66,859,738
Ending balance at Jul. 31, 2024	$ 4,074,053	$ 4,067,430	$ 6,686	$ 577,015	$ 4,254,734	$ (93,706)	$ (677,299)	$ 6,623
Ending balance (in shares) at Jul. 31, 2024	13,928,314						13,928,314