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Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 5.5	$ 6.2
Related tax benefits	2.1	2.4
Unrecognized compensation cost of non-vested stock options	3.8
Unrecognized compensation cost of restricted stock awards	$ 23.8
Amortization period (years) of unrecognized compensation cost	2.5
Amortization period (years) of unrecognized compensation cost for restricted stock awards	1.5

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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