Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2021	Oct. 31, 2020	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Mountain									$ 1,689,878	$ 1,710,443	$ 1,956,201
Lodging									218,062	248,414	314,662
Total Resort net revenue									1,907,940	1,958,857	2,270,863
Real Estate									1,770	4,847	712
Total net revenue	$ 204,202	$ 889,078	$ 684,644	$ 131,786	$ 77,209	$ 694,087	$ 924,638	$ 267,770	1,909,710	1,963,704	2,271,575
Mountain									1,146,187	1,212,053	1,279,567
Lodging									223,795	245,145	286,562
Resort									1,369,982	1,457,198	1,566,129
Real estate									6,676	9,182	5,609
Total segment operating expense									1,376,658	1,466,380	1,571,738
Gain on sale of real property									324	207	580
Mountain equity investment income, net									6,698	1,690	1,960
Total Reported EBITDA									540,074	499,221	702,377
Real estate held for sale or investment	95,615				96,844				95,615	96,844	101,021
Income before provision for income taxes									125,183	116,433	398,965
Depreciation and amortization									252,585	249,572	218,117
Asset impairments									0	28,372	0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property									5,373	(838)	664
Change in fair value of contingent consideration									14,402	(2,964)	5,367
Investment Income, Interest									(586)	(1,305)	(3,086)
Foreign Currency Transaction Gain (Loss), before Tax									(8,282)	3,230	2,854
Interest Expense									151,399	106,721	79,496
Provision for income taxes (Note 11)									(726)	(7,378)	(75,472)
Net income	(144,942)	277,290	149,130	(157,021)	(157,965)	159,831	217,018	(109,829)	124,457	109,055	323,493
Net loss (income) attributable to noncontrolling interests									3,393	(10,222)	(22,330)
Net income	(140,811)	$ 274,629	$ 147,798	$ (153,766)	(153,608)	$ 152,546	$ 206,370	$ (106,475)	127,850	98,833	301,163
Property, Plant and Equipment, Net	$ 2,067,876				$ 2,192,679				2,067,876	2,192,679
Resort [Member]
Total Reported EBITDA									544,656	503,349	706,694
Mountain [Member]
Total Reported EBITDA									550,389	500,080	678,594
Lodging [Member]
Total Reported EBITDA									(5,733)	3,269	28,100
Real Estate Segment
Total Reported EBITDA									$ (4,582)	$ (4,128)	$ (4,317)