Net Income Per Common Share Net Income per Common Share (Narrative) (Details) $ / shares in Units, SFr in Thousands, $ in Thousands					3 Months Ended		6 Months Ended
	Apr. 11, 2023	Mar. 27, 2023	Mar. 07, 2023 $ / shares	Oct. 17, 2016 shares	Jan. 31, 2023 USD ($) $ / shares shares	Jan. 31, 2022 USD ($) $ / shares shares	Jan. 31, 2023 USD ($) $ / shares shares	Jan. 31, 2022 USD ($) $ / shares shares	Aug. 03, 2022 CHF (SFr)	Jul. 31, 2022 $ / shares	Dec. 18, 2020 USD ($)
Anti-dilutive securities (in shares)					25,000	0	26,000	1,000,000,000
Common Stock, Dividends, Per Share, Cash Paid | $ / shares					$ 1.91	$ 0.88	$ 3.82	$ 1.76
Payments of Dividends | $							$ 154,047	$ 71,338
Preferred Stock, Par or Stated Value Per Share | $ / shares					$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.01
Dividends, Cash | $					$ 77,000	$ 35,700	$ 154,000	$ 71,300
Debt Instrument, Face Amount									SFr 40,000		$ 575,000
Net Income (Loss) Attributable to Parent | $					$ 208,679	$ 223,391	$ 71,708	$ 84,059
Weighted-average Vail Shares outstanding					40,327,000	40,505,000	40,312,000	40,460,000
Weighted-average Exchangeco Shares outstanding					0	33,000	1,000	33,000
Weighted Average Number of Shares Outstanding, Basic					40,327,000	40,538,000	40,313,000	40,493,000
Effect of dilutive securities					107,000	282,000	95,000	344,000
Total shares					40,434,000	40,820,000	40,408,000	40,837,000
Earnings Per Share, Basic | $ / shares					$ 5.17	$ 5.51	$ 1.78	$ 2.08
Earnings Per Share, Diluted | $ / shares					5.16	5.47	1.77	2.06
Exchangeable Shares Par Value Per Share | $ / shares					$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.01
Subsequent Event
Cash dividends declared per share | $ / shares			$ 2.06
Convertible Debt [Member]
Debt Instrument, Face Amount | $											$ 575,000
Forecast
Dividends Payable, Date to be Paid	Apr. 11, 2023
Dividends Payable, Date of Record		Mar. 27, 2023
Dividends Payable, Date Declared			Mar. 07, 2023
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