ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	$ 2,948,106	$ 2,345,569	$ 2,095,228
Total other comprehensive income (loss), net of tax	(227,661)	17,711	83,736
Balance at end of period	3,600,654	2,948,106	2,345,569
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	54,152	46,512	(46,484)
OCI before reclassifications	(237,605)	7,640	92,996
Income taxes associated with OCI before reclassifications	0	0	0
Amounts reclassified from AOCI	0	0	0
Income taxes associated with amounts reclassified from AOCI	0	0	0
Total other comprehensive income (loss), net of tax	(237,605)	7,640	92,996
Balance at end of period	(183,453)	54,152	46,512
Unrealized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	(8,655)	(18,823)	(9,472)
OCI before reclassifications	3,775	(1,100)	(20,557)
Income taxes associated with OCI before reclassifications	(866)	327	4,906
Amounts reclassified from AOCI	8,502	14,433	8,180
Income taxes associated with amounts reclassified from AOCI	(2,081)	(3,492)	(1,880)
Total other comprehensive income (loss), net of tax	9,330	10,168	(9,351)
Balance at end of period	675	(8,655)	(18,823)
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	(876)	(696)	(1,048)
OCI before reclassifications	2,047	(180)	352
Income taxes associated with OCI before reclassifications	0	0	0
Amounts reclassified from AOCI	0	0	0
Income taxes associated with amounts reclassified from AOCI	0	0	0
Total other comprehensive income (loss), net of tax	2,047	(180)	352
Balance at end of period	1,171	(876)	(696)
AOCI, net of tax, Attributable to THOR
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	44,621	26,993	(57,004)
OCI before reclassifications	(231,783)	6,360	72,791
Income taxes associated with OCI before reclassifications	(866)	327	4,906
Amounts reclassified from AOCI	8,502	14,433	8,180
Income taxes associated with amounts reclassified from AOCI	(2,081)	(3,492)	(1,880)
Total other comprehensive income (loss), net of tax	(226,228)	17,628	83,997
Balance at end of period	(181,607)	44,621	26,993
Non-controlling Interests
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	(772)	(855)	(594)
OCI before reclassifications	(1,433)	83	(261)
Income taxes associated with OCI before reclassifications	0	0	0
Amounts reclassified from AOCI	0	0	0
Income taxes associated with amounts reclassified from AOCI	0	0	0
Total other comprehensive income (loss), net of tax	(1,433)	83	(261)
Balance at end of period	(2,205)	(772)	(855)
Total AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period, net of tax	43,849	26,138	(57,598)
OCI before reclassifications	(233,216)	6,443	72,530
Income taxes associated with OCI before reclassifications	(866)	327	4,906
Amounts reclassified from AOCI	8,502	14,433	8,180
Income taxes associated with amounts reclassified from AOCI	(2,081)	(3,492)	(1,880)
Total other comprehensive income (loss), net of tax	(227,661)	17,711	83,736
Balance at end of period	$ (183,812)	$ 43,849	$ 26,138