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Financial Derivatives (Schedule Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2011		Nov. 30, 2010		Nov. 30, 2011 Designated as Hedging Instrument [Member]	Aug. 31, 2011 Designated as Hedging Instrument [Member]	Nov. 30, 2010 Designated as Hedging Instrument [Member]	Nov. 30, 2011 Designated as Hedging Instrument [Member] Other Current Assets [Member] Forward Contracts [Member]	Aug. 31, 2011 Designated as Hedging Instrument [Member] Other Current Liabilities [Member] Forward Contracts [Member]	Nov. 30, 2010 Designated as Hedging Instrument [Member] Other Current Liabilities [Member] Forward Contracts [Member]	Nov. 30, 2011 Designated as Hedging Instrument [Member] Other Current Liabilities [Member] Interest Rate Swap [Member]	Aug. 31, 2011 Designated as Hedging Instrument [Member] Other Current Liabilities [Member] Interest Rate Swap [Member]	Nov. 30, 2010 Designated as Hedging Instrument [Member] Other Current Liabilities [Member] Interest Rate Swap [Member]	Nov. 30, 2011 Designated as Hedging Instrument [Member] Other Noncurrent Liabilties [Member] Interest Rate Swap [Member]	Aug. 31, 2011 Designated as Hedging Instrument [Member] Other Noncurrent Liabilties [Member] Interest Rate Swap [Member]	Nov. 30, 2010 Designated as Hedging Instrument [Member] Other Noncurrent Liabilties [Member] Interest Rate Swap [Member]	Nov. 30, 2010 Not Designated as Hedging Instrument [Member]	Nov. 30, 2010 Not Designated as Hedging Instrument [Member] Other Current Assets [Member] Forward Contracts [Member]
Derivative assets								$ 282										$ 7
Derivative liabilities									(218)	(27)
Interest rate swap liabilities											(225)	(267)	(384)	(86)	(149)	(392)
Derivative Assets (Liabilities), at Fair Value, Net					(29)	(634)	(803)										7
Foreign currency forward contracts (losses)	591	[1]	(430)	[1]
Net of tax expense (benefit)	$ 360		$ (263)
[1] Net of tax expense (benefit) of $360 and ($263) for the three months ended November 30, 2011 and 2010, respectively.

X

- Definition

Amount of gain or loss recognized in OCI on net investment hedge derivatives.

+ References

No definition available.

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X

- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 4, 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

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- Definition

Fair value as of the balance sheet date of foreign currency derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

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- Definition

Fair value as of the balance sheet date of foreign currency derivative assets, net of foreign currency derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

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-Topic 815

-SubTopic 10

-Section 45

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- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

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-Paragraph 10

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- Definition

Tax effect of current period adjustment resulting from gains and losses on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 52

-Paragraph 31

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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