Income Taxes (Reconciliation Of Consolidated Liability For Unrecognized Income Tax Benefits) (Details) (USD $) In Thousands	12 Months Ended
Aug. 31, 2011	Aug. 31, 2010	Aug. 31, 2009
Income Taxes
Beginning balance	$ 78,140	$ 79,576	$ 75,178
Additions for tax positions of prior years	2,979	4,931	11,201
Reductions for tax positions of prior years	(12,631)	(11,669)	(10,729)
Additions for tax positions related to current year	18,431	18,249	11,936
Additions for tax positions related to acquired entities	3,648		368
Cash settlements	(1,667)	(3,103)	(258)
Reductions from lapses in statutes of limitations	(2,840)	(4,184)	(1,609)
Reductions from settlements with taxing authorities	(5,349)	(4,450)	(6,421)
Foreign exchange rate adjustment	4,231	(1,210)	(90)
Ending balance	$ 84,942	$ 78,140	$ 79,576

The gross amount of decreases in unrecognized tax benefits resulting from cash settlements.

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The gross amount of decreases in unrecognized tax benefits resulting from Foreign exchange rate adjustments.

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Unrecognized tax benefits, increases resulting from acquired entity tax positions.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations.

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