Fair Value Measurements (Fair Value Measurements on a Recurring Basis) (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Nov. 30, 2019	Aug. 31, 2019
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 47,257	$ 27,804
Short-term investments	16,350	14,088
Level 2 \| Prepaid expenses and other current assets \| Designated as Hedging Instruments \| Foreign exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward foreign exchange contracts	1,623	904
Level 2 \| Prepaid expenses and other current assets \| Not Designated as Hedging Instruments \| Foreign exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Forward foreign exchange contracts	14,240	6,878
Level 2 \| Accrued expenses \| Designated as Hedging Instruments \| Foreign exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	3,357	15,999
Level 2 \| Accrued expenses \| Designated as Hedging Instruments \| Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	4,319	5,918
Level 2 \| Accrued expenses \| Not Designated as Hedging Instruments \| Foreign exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	13,154	55,391
Level 2 \| Other liabilities \| Designated as Hedging Instruments \| Forward interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	28,784	35,045
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Non-Convertible Preferred Stock	$ 25,200	$ 33,102

Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Fair value portion of other assets.

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