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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective income tax rate	13.00%
Reserves for uncertain tax positions	$ 8.3
Estimated accrued interest and penalties	$ 2.6

- 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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