FAIR VALUE (Financial Assets and Financial Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)	Aug. 31, 2023	Aug. 31, 2022
Commodity \| Significant Unobservable Inputs (Level 3) \| Valuation Technique, Discounted Cash Flow \| Low
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Energy Floating Rate	$ 480	$ 460
Commodity \| Significant Unobservable Inputs (Level 3) \| Valuation Technique, Discounted Cash Flow \| High
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Energy Floating Rate	855	1,299
Commodity \| Significant Unobservable Inputs (Level 3) \| Valuation Technique, Discounted Cash Flow \| Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Energy Floating Rate	630	717
Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	508,227,000	572,384,000
Fair value, measurements, recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	508,227,000	572,384,000
Fair value, measurements, recurring \| Significant Other Observable Inputs (Level 2)
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)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market investments	0	0
Fair value, measurements, recurring \| Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	195,689,000	160,847,000
Derivative liabilities	4,068,000	1,260,000
Fair value, measurements, recurring \| Commodity \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,264,000	17,347,000
Derivative liabilities	4,068,000	1,260,000
Fair value, measurements, recurring \| Commodity \| Significant Other Observable Inputs (Level 2)
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 \| Commodity \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	194,425,000	143,500,000
Derivative liabilities	0	0
Fair value, measurements, recurring \| Foreign exchange
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,898,000	1,296,000
Derivative liabilities	2,566,000	3,126,000
Fair value, measurements, recurring \| Foreign exchange \| Quoted Prices in Active Markets for Identical Assets (Level 1)
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 \| Foreign exchange \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	1,898,000	1,296,000
Derivative liabilities	2,566,000	3,126,000
Fair value, measurements, recurring \| Foreign exchange \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	$ 0	$ 0