Derivative Instruments (Summary Of Activity Associated With All Of The Company's Designated Cash Flow Hedges) (Details) (USD $) In Thousands	12 Months Ended
Aug. 31, 2011	Aug. 31, 2010
Derivative Instruments [Abstract]
Beginning balance, net of tax	$ (238)	$ 851
Changes in fair value	5,010	(287)
Realized gain reclassified to earnings	(4,182)	(802)
Ending balance, net of tax	$ 590	$ (238)

Net of tax effect of the reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.

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-Name Accounting Research Bulletin (ARB)

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-Glossary Reclassification Adjustments

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+ Details

- Definition

Change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

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+ Details