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COMMON STOCK (Schedule of Stock-Based Compensation Cost) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
COMMON STOCK [Abstract]
Total stock-based compensation cost (pre-tax)	$ 11.6	$ 12.2	$ 12.0
Total income tax benefit	(4.2)	(4.5)	(4.4)
Total stock-based compensation cost, net of tax	$ 7.4	$ 7.7	$ 7.6

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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