Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Income Taxes
Statutory income tax rate	35.00%	35.00%	35.00%
Resolution of prior period tax items		1.00%	(1.00%)
Increase in tax rate resulting from - Valuation allowance		2.00%
Increases to the reserve for uncertain tax positions	2.00%	1.00%	1.00%
Decrease in tax rate resulting from - Foreign tax rate differentials, net of foreign tax credit utilization	(23.00%)	(19.00%)	(20.00%)
Effective income tax rate	16.00%	20.00%	15.00%

Effective Income Tax Reconciliation Increases To The Reserve For Uncertain Tax Positions

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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-Publisher FASB

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to changes in the valuation allowance for deferred tax assets.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the difference between statutory income tax rates in foreign jurisdictions and the domestic federal statutory income tax rate recorded during the period.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to revisions in previously reported amounts of income tax provision.

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