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Notes Payable, Net - Notes Payable, Net (Detail) - USD ($) $ in Thousands | Aug. 31, 2021 | Aug. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
Term loans | $ 492,319 | $ 498,858
Other notes payable | 1,710 | 10,135
Notes payable, gross | 915,525 | 833,993
Debt discount and issuance costs | (89,019) | (29,905)
Notes payable, net | 826,506 | 804,088
2.875% Convertible senior notes, due 2028 |  |
Debt Instrument [Line Items] |  |
Convertible senior notes | 373,750 |
2.875% Convertible senior notes, due 2024 |  |
Debt Instrument [Line Items] |  |
Convertible senior notes | $ 47,746 | 275,000
2.25% Convertible senior notes, due 2024 |  |
Debt Instrument [Line Items] |  |
Convertible senior notes |  | $ 50,000

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