Fair Value Measurements (Tables)

6 Months Ended

Feb. 28, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

	February 28, 2018
	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 and freight derivatives	$	26,002	$	397,976	$	—	$	423,978
Foreign currency derivatives	—		6,026		—		6,026
Deferred compensation assets	53,041		—		—		53,041
Deferred purchase price receivable	—		—		517,759		517,759
Embedded derivative asset	—		22,704		—		22,704
Other assets	17,342		—		—		17,342
Total	$	96,385	$	426,706	$	517,759	$	1,040,850
Liabilities:
Commodity and freight derivatives	$	55,696	$	312,012	$	—	$	367,708
Foreign currency derivatives	—		12,906		—		12,906
Interest rate swap derivatives	—		8,617		—		8,617
Total	$	55,696	$	333,535	$	—	$	389,231

	August 31, 2017
	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 and freight derivatives	$	48,491	$	336,157	$	—	$	384,648
Foreign currency derivatives	—		8,771		—		8,771
Interest rate swap derivatives	—		9,978		—		9,978
Deferred compensation assets	52,414		—		—		52,414
Deferred purchase price receivable	—		—		548,602		548,602
Embedded derivative asset	—		25,533		—		25,533
Other assets	14,846		—		—		14,846
Total	$	115,751	$	380,439	$	548,602	$	1,044,792
Liabilities:
Commodity and freight derivatives	$	31,189	$	278,573	$	—	$	309,762
Foreign currency derivatives	—		19,931		—		19,931
Interest rate swap derivatives	—		707		—		707
Total	$	31,189	$	299,211	$	—	$	330,400