Income Taxes Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2020 |
Aug. 31, 2019 |
Aug. 31, 2018 |
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| Income Tax Disclosure [Abstract] | |||
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | $ 4.5 | $ 3.7 | $ 3.0 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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