Net Income Per Common Share Net Income per Common Share (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 17, 2016	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021	Jul. 31, 2021	Dec. 18, 2020
Anti-dilutive securities (in shares)		8,000	1,000	3,000	2,000
Common Stock, Dividends, Per Share, Cash Paid		$ 1.91	$ 0	$ 3.67	$ 0
Cash dividends declared per share				$ 1.91
Payments of Dividends				$ 148,851	$ 0
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Dividends, Cash		$ 77,500		$ 148,900
Dividends Payable, Date to be Paid				Jul. 12, 2022
Dividends Payable, Date of Record				Jun. 27, 2022
Dividends Payable, Date Declared				Jun. 08, 2022
Net Income (Loss) Attributable to Parent		$ 372,550	$ 274,629	$ 456,609	$ 268,661
Weighted-average Vail Shares outstanding		40,537,000	40,262,000	40,485,000	40,242,000
Weighted-average Exchangeco Shares outstanding		31,000	34,000	33,000	35,000
Weighted Average Number of Shares Outstanding, Basic		40,568,000	40,296,000	40,518,000	40,277,000
Effect of dilutive securities		110,000	600,000	266,000	530,000
Total shares		40,678,000	40,896,000	40,784,000	40,807,000
Earnings Per Share, Basic		$ 9.18	$ 6.82	$ 11.27	$ 6.67
Earnings Per Share, Diluted		$ 9.16	$ 6.72	$ 11.20	$ 6.58
Convertible Debt [Member]
Debt Instrument, Face Amount							$ 575,000
Debt Instrument, Interest Rate, Stated Percentage							0.00%
Common Stock [Member]
Stock Issued During Period, Shares, New Issues	3,327,719
Exchangeable Shares [Member]
Stock Issued During Period, Shares, New Issues	418,095