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Stock Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2021 | Feb. 28, 2022 | Aug. 31, 2021 | Feb. 28, 2021 | Feb. 28, 2022 | Feb. 28, 2021 | May 31, 2021
Stock Repurchase Programs [Line Items] |  |  |  |  |  |  |
Authorization of stock repurchase program |  |  | Jan. 08, 2008 |  |  |  |
Capital to be returned to stockholders through share repurchases |  |  |  |  |  |  | $ 1,000,000
Stock repurchase program, remaining authorized repurchase, value | $ 469,700 | $ 392,300 |  |  | $ 392,300 |  | $ 600,000
Stock repurchase program expiration date | May 31, 2021 |  |  |  |  |  |
Shares repurchased |  | 171,933 |  | 290,174 | 305,321 | 290,174 |
Shares repurchased, value |  | $ 15,000 | $ 12,500 | $ 24,628 | $ 27,500 | $ 24,600 |
Repurchase of common stock price per shares |  | $ 87.24 |  | $ 84.87 | $ 90.07 | $ 84.87 |

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