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Earnings per Share - Summary of Buyback Activity by Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended | 21 Months Ended
--- | --- | --- | ---
Nov. 30, 2021 | Aug. 31, 2021 | Nov. 30, 2020 | Aug. 31, 2020 | Nov. 30, 2021 | Nov. 30, 2020 | Jul. 31, 2021
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock purchased under share buyback (shares) | 0 |  | 0 |  |  |  |
Stock purchased under share buyback | $ 5,491 | $ 659,235 | $ 2,371 | $ 69,011 |  |  |
Share Buyback Programs |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock purchased under share buyback (shares) |  |  |  |  | 1,590 | 0 |
Stock purchased under share buyback, average price (in dollars per share) |  |  |  |  | $ 365.41 | $ 0 |
Stock purchased under share buyback |  |  |  |  | $ 581,220 | $ 0 |
October 29, 2019 Plan |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock purchased under share buyback (shares) |  |  |  |  | 1,590 | 0 | 2,800
Stock purchased under share buyback, average price (in dollars per share) |  |  |  |  | $ 365.41 | $ 0 | $ 358.93
Stock purchased under share buyback |  |  |  |  | $ 581,220 | $ 0 | $ 1,000,000
July 27, 2021 Plan |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |
Stock purchased under share buyback (shares) |  |  |  |  | 0 | 0 |
Stock purchased under share buyback, average price (in dollars per share) |  |  |  |  | $ 0 | $ 0 |
Stock purchased under share buyback |  |  |  |  | $ 0 | $ 0 |

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