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Interim Financial Statements - Additional Information (Detail) - USD ($) | Nov. 30, 2021 | Sep. 01, 2021 | Aug. 31, 2021
--- | --- | --- | ---
Equity Class Of Treasury Stock [Line Items] |  |  |
Increase in retained earnings | $ 888,700,000 |  | $ 881,700,000
Reduction to additional paid in capital | $ (408,500,000) |  | $ (469,700,000)
ASU 2020-06 |  |  |
Equity Class Of Treasury Stock [Line Items] |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] | true |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date | Sep. 01, 2021 |  |
ASU 2020-06 | Cumulative Effect Adjustment Due to Adoption |  |  |
Equity Class Of Treasury Stock [Line Items] |  |  |
Increase in retained earnings |  | $ 5,000,000 |
Reduction to additional paid in capital |  | (59,000,000) |
Derecognition of deferred tax liabilities |  | 17,000,000 |
Increase in convertible note due to derecognition of debt discount |  | $ 71 |
ASU 2019-12 |  |  |
Equity Class Of Treasury Stock [Line Items] |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] | true |  |
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] | true |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date | Sep. 01, 2021 |  |

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