DERIVATIVES (Commodity Contract Commitments) (Details) MWh in Thousands	6 Months Ended
	Feb. 28, 2023 MWh MMBTU t
Aluminum | Long
Derivative [Line Items]
Commodity contract commitments	2,750
Aluminum | Short
Derivative [Line Items]
Commodity contract commitments	675
Copper | Long
Derivative [Line Items]
Commodity contract commitments	1,123
Copper | Short
Derivative [Line Items]
Commodity contract commitments	9,321
Electricity | Long
Derivative [Line Items]
Commodity contract commitment, energy | MWh	3,405
Natural Gas | Long
Derivative [Line Items]
Commodity contract commitment, energy | MMBTU	4,910,400