Derivative Financial Instruments and Hedging Activities - Narrative (Details) bbl in Millions, $ in Millions	12 Months Ended
	Aug. 31, 2022 USD ($) bbl	Aug. 31, 2021 USD ($) bbl
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Noncurrent, Excluding Fair Value Hedges	$ 8.5	$ 21.6
Derivative Liability, Noncurrent, Excluding Fair Value Hedges	$ 4.0	$ 4.8
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Nonmonetary Notional Amount, Volume | bbl	3.8	2.7
Foreign exchange derivatives | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 1,900.0	$ 1,200.0