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Net Income Per Common Share Net Income per Common Share (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 17, 2016 | Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2022 | Jan. 31, 2021 | Jul. 31, 2021 | Dec. 18, 2020
Anti-dilutive securities (in shares) |  | 0 | 5,000 | 1,000 | 600,000 |  |
Common Stock, Dividends, Per Share, Cash Paid |  | $ 0.88 | $ 0 | $ 1.76 | $ 0 |  |
Cash dividends declared per share |  |  |  | $ 1.91 |  |  |
Payments of Dividends |  |  |  | $ 71,338 | $ 0 |  |
Preferred Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 |
Dividends, Cash |  | $ 35,700 |  | $ 71,300 |  |  |
Dividends Payable, Date to be Paid |  |  |  | Apr. 14, 2022 |  |  |
Dividends Payable, Date of Record |  |  |  | Mar. 30, 2022 |  |  |
Dividends Payable, Date Declared |  |  |  | Mar. 11, 2022 |  |  |
Net Income (Loss) Attributable to Parent |  | $ 223,391 | $ 147,798 | $ 84,059 | $ (5,968) |  |
Weighted-average Vail Shares outstanding |  | 40,505,000 | 40,253,000 | 40,460,000 | 40,233,000 |  |
Weighted-average Exchangeco Shares outstanding |  | 33,000 | 35,000 | 33,000 | 35,000 |  |
Weighted Average Number of Shares Outstanding, Basic |  | 40,538,000 | 40,288,000 | 40,493,000 | 40,268,000 |  |
Effect of dilutive securities |  | 282,000 | 521,000 | 344,000 | 0 |  |
Total shares |  | 40,820,000 | 40,809,000 | 40,837,000 | 40,268,000 |  |
Earnings Per Share, Basic |  | $ 5.51 | $ 3.67 | $ 2.08 | $ (0.15) |  |
Earnings Per Share, Diluted |  | $ 5.47 | $ 3.62 | $ 2.06 | $ (0.15) |  |
Convertible Debt [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 575,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 0.00%
Debt Instrument, Convertible, Conversion Price |  |  |  |  |  |  | $ 407.17
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 |  |  |  |  |  |

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