Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Total Mountain net revenue									$ 1,956,201	$ 1,722,922	$ 1,611,786
Lodging									314,662	284,643	278,514
Resort									2,270,863	2,007,565	1,890,300
Real Estate									712	3,988	16,918
Total net revenue	$ 244,006	$ 957,987	$ 849,578	$ 220,004	$ 211,637	$ 844,491	$ 734,575	$ 220,850	2,271,575	2,011,553	1,907,218
Mountain									1,279,567	1,132,840	1,047,331
Lodging									286,562	259,637	251,427
Resort									1,566,129	1,392,477	1,298,758
Real estate									5,609	3,546	24,083
Total segment operating expense									1,571,738	1,396,023	1,322,841
Gain on sale of real property									580	515	6,766
Mountain equity investment income, net									1,960	1,523	1,883
Total Reported EBITDA									702,377	617,568	593,026
Real estate held for sale and investment	101,021				99,385				101,021	99,385	103,405
Depreciation and amortization									(218,117)	(204,462)	(189,157)
Change in Fair Value of Contingent Consideration									(5,367)	1,854	(16,300)
Loss on disposal of fixed assets and other, net									(664)	(4,620)	(6,430)
Investment income and other, net									3,086	1,944	6,114
Foreign currency (loss) gain on intercompany loans (Note 5)									(2,854)	(8,966)	15,285
Interest expense									(79,496)	(63,226)	(54,089)
Income before provision for income taxes									398,965	340,092	348,449
(Provision) benefit from income taxes (Note 10)									(75,472)	61,138	(116,731)
Net income	(92,301)	308,530	217,990	(110,726)	(87,791)	272,275	248,673	(31,927)	323,493	401,230	231,718
Net income attributable to noncontrolling interests									(22,330)	(21,332)	(21,165)
Net income	(89,525)	$ 292,134	$ 206,349	$ (107,795)	(83,660)	$ 256,252	$ 235,691	$ (28,385)	301,163	379,898	210,553
Property, Plant and Equipment, Net	$ 1,842,500				$ 1,627,219				1,842,500	1,627,219
Resort [Member]
Total Reported EBITDA									706,694	616,611	593,425
Mountain [Member]
Total Reported EBITDA									678,594	591,605	566,338
Lodging [Member]
Total Reported EBITDA									28,100	25,006	27,087
Real Estate [Member]
Total Reported EBITDA									$ (4,317)	$ 957	$ (399)