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Stock Repurchase Program - Share Repurchase Activity (Detail) - USD ($) $ in Thousands | 2 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 18, 2021 | Aug. 28, 2021 | Aug. 29, 2020 | Aug. 31, 2019 | Oct. 05, 2021 | Mar. 23, 2021 | Dec. 15, 2020 | Dec. 14, 2020
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Amount |  | $ 3,378,321 | $ 930,903 | $ 2,004,896 |  |  |  |
Shares |  | 2,592,000 | 826,000 | 2,182,000 |  |  |  |
Subsequent Events [Member] |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Amount | $ 362,800 |  |  |  |  |  |  |
Shares | 220,022 |  |  |  |  |  |  |
Remaining value authorized for share repurchases | $ 1,555,000 |  |  |  |  |  |  |
Stock Repurchase Program 1998 |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchase authorized |  |  |  |  |  | $ 26,150,000 | $ 24,650,000 | $ 23,150,000
Remaining value authorized for share repurchases |  | $ 417,600 |  |  |  |  |  |
Stock Repurchase Program 1998 | Subsequent Events [Member] |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchase authorized |  |  |  |  | $ 27,650,000 |  |  |
Common Stock | Subsequent Events [Member] |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchase authorized |  |  |  |  | $ 1,500,000 |  |  |

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