Supplementary Balance Sheet Information (Changes In Goodwill Amount) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Goodwill, beginning balance	$ 1,608,206	$ 1,475,686
Acquisition	135,987	152,049
Goodwill, Impairment Loss	(25,688)
Goodwill, Translation Adjustments	(9,485)	(19,529)
Goodwill, ending balance	1,709,020	1,608,206
Mountain [Member]
Goodwill, beginning balance	1,540,307	1,407,787
Acquisition	135,987	152,049
Goodwill, Impairment Loss	0
Goodwill, Translation Adjustments	(9,485)	(19,529)
Goodwill, ending balance	1,666,809	1,540,307
Lodging [Member]
Goodwill, beginning balance	67,899	67,899
Acquisition	0	0
Goodwill, Impairment Loss	(25,688)
Goodwill, Translation Adjustments	0	0
Goodwill, ending balance	$ 42,211	$ 67,899