Fair Value Measurements (Tables)

6 Months Ended

Feb. 28, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

	February 28, 2023
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
	(Dollars in thousands)
Assets
Commodity derivatives	$	2,996	$	395,773	$	—	$	398,769
Foreign exchange derivatives	—		56,962		—		56,962
Segregated investments and marketable securities	240,005		—		—		240,005
Other assets	79,161		—		—		79,161
Total	$	322,162	$	452,735	$	—	$	774,897
Liabilities
Commodity derivatives	$	1,179	$	288,023	$	—	$	289,202
Foreign exchange derivatives	—		11,256		—		11,256
Total	$	1,179	$	299,279	$	—	$	300,458

	August 31, 2022
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
	(Dollars in thousands)
Assets
Commodity derivatives	$	1,161	$	490,160	$	—	$	491,321
Foreign exchange derivatives	—		52,923		—		52,923
Segregated investments and marketable securities	238,124		—		—		238,124
Other assets	58,280		—		—		58,280
Total	$	297,565	$	543,083	$	—	$	840,648
Liabilities
Commodity derivatives	$	10,256	$	379,883	$	—	$	390,139
Foreign exchange derivatives	—		12,649		—		12,649
Total	$	10,256	$	392,532	$	—	$	402,788