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Income Taxes (Narrative) (Details) (USD $)	3 Months Ended
Income Taxes (Narrative) (Details) (USD $)	Dec. 31, 2011
Income Taxes [Abstract]
Effective income tax rate	16.00%
Reserves for uncertain tax positions	$ 16,900,000
Estimated accrued interest and penalties	$ 5,000,000

- Definition

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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