Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2026	Jan. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 4,299,273	$ 4,061,956	$ 4,289,552	$ 4,074,053
Total other comprehensive income (loss), net of tax	54,182	(79,482)	74,042	(67,539)
Ending balance	4,322,713	3,953,495	4,322,713	3,953,495
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	28,697	(82,083)	8,847	(93,984)
OCI before reclassifications	54,082	(76,115)	73,932	(64,214)
Total other comprehensive income (loss), net of tax	54,082	(76,115)	73,932	(64,214)
Ending balance	82,779	(158,198)	82,779	(158,198)
Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1,543	278	1,543	278
OCI before reclassifications	64	0	64	0
Total other comprehensive income (loss), net of tax	64	0	64	0
Ending balance	1,607	278	1,607	278
AOCI, net of tax, Attributable to THOR
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	30,240	(81,805)	10,390	(93,706)
OCI before reclassifications	54,146	(76,115)	73,996	(64,214)
Total other comprehensive income (loss), net of tax	54,146	(76,115)	73,996	(64,214)
Ending balance	84,386	(157,920)	84,386	(157,920)
Non-controlling Interests
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(7,026)	(3,393)	(7,036)	(3,435)
OCI before reclassifications	36	(3,367)	46	(3,325)
Total other comprehensive income (loss), net of tax	36	(3,367)	46	(3,325)
Ending balance	(6,990)	(6,760)	(6,990)	(6,760)
Total AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	23,214	(85,198)	3,354	(97,141)
OCI before reclassifications	54,182	(79,482)	74,042	(67,539)
Total other comprehensive income (loss), net of tax	54,182	(79,482)	74,042	(67,539)
Ending balance	$ 77,396	$ (164,680)	$ 77,396	$ (164,680)