Fair Value Measurements (Tables)

3 Months Ended

Nov. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

	November 30, 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	$	29,637	$	295,230	$	—	$	324,867
Foreign currency derivatives	—		4,297		—		4,297
Interest rate swap derivatives	—		3,596		—		3,596
Deferred compensation assets	53,348		—		—		53,348
Deferred purchase price receivable	—		—		521,502		521,502
Embedded derivative asset	—		22,271		—		22,271
Other assets	17,784		—		—		17,784
Total	$	100,769	$	325,394	$	521,502	$	947,665
Liabilities:
Commodity and freight derivatives	$	25,299	$	199,357	$	—	$	224,656
Foreign currency derivatives	—		7,556		—		7,556
Interest rate swap derivatives	—		2,641		—		2,641
Total	$	25,299	$	209,554	$	—	$	234,853

	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