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Stock-Based Compensation Level 4 - Stock-based Compensation Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Note 13 – Stock-Based Compensation [Abstract]
Allocated Share-based Compensation Expense	$ 1.5	$ 0.5	$ 3.8	$ 1.6

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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