Income Taxes (Details) - USD ($)		3 Months Ended	9 Months Ended	12 Months Ended
	May 31, 2018	May 31, 2018	May 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Income Tax Contingency [Line Items]
Impaired income tax receivable due to Brazilian tax legislation		$ 15,500,000
Current tax expense, sale of assets		21,300,000
Current tax expense, performance of foreign guarantees		$ 10,000,000
Provisional tax liability			$ 0
Discrete provisional net benefit	$ 133,600,000
Scenario, Forecast
Income Tax Contingency [Line Items]
Corporate Tax Rate				21.00%	25.70%