FAIR VALUE (Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)	Nov. 30, 2021	Aug. 31, 2021	Nov. 30, 2020
Significant Unobservable Inputs (Level 3) | Minimum | Commodity | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Energy floating rate	$ 252.79		$ 151.66
Significant Unobservable Inputs (Level 3) | Maximum | Commodity | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Energy floating rate	540.39		247.56
Significant Unobservable Inputs (Level 3) | Average | Commodity | Valuation Technique, Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Energy floating rate	348.99		$ 203.96
Fair value, measurements, recurring | Money market investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	361,387,000	$ 441,297,000
Fair value, measurements, recurring | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	50,253,000	27,323,000
Derivative liabilities	375,000	1,352,000
Fair value, measurements, recurring | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,207,000	2,537,000
Derivative liabilities	4,072,000	1,880,000
Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	361,387,000	441,297,000
Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,361,000	910,000
Derivative liabilities	375,000	1,352,000
Fair value, measurements, recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2) | Money market investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	0	0
Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2) | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair value, measurements, recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,207,000	2,537,000
Derivative liabilities	4,072,000	1,880,000
Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3) | Money market investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	0	0
Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3) | Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	47,892,000	26,413,000
Derivative liabilities	0	0
Fair value, measurements, recurring | Significant Unobservable Inputs (Level 3) | Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	$ 0	$ 0