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Derivative Financial Instruments and Hedging Activities - Schedule of Derivative Instruments, Effect on Earnings (Details) - Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Derivative [Line Items]
Gain (loss) on fair value hedging relationship	$ 0	$ 0	$ 0	$ 0
Interest Expense | Interest rate swap derivatives
Derivative [Line Items]
Gain (loss) on fair value hedging relationship	5,763	(6,052)	2,808	(7,007)
Interest Expense | Hedged Item
Derivative [Line Items]
Gain (loss) on fair value hedging relationship	$ (5,763)	$ 6,052	$ (2,808)	$ 7,007

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+ References

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- Definition

Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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