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Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 years	Dec. 31, 2010
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 8.3	$ 8.7	$ 13.8	$ 14.9
Related tax benefits	3.0	3.3	5.1	5.6
Unrecognized compensation cost of non-vested stock options	2.6		2.6
Unrecognized compensation cost of restricted stock awards			$ 37.5
Amortization period (years) of unrecognized compensation cost for non-vested stock options			2.4
Amortization period (years) of unrecognized compensation cost for restricted stock awards			1.8

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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