STATEMENT OF CASH FLOWS (Details) (USD $) In Millions	3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash:
Cash paid during the year for interest	$ 4.7	$ 2.7
Cash paid during the year for income taxes	27.7	12.2
Non-cash investing and financing activities:
Incremental tax benefit from the exercise of stock options	(0.3)	(1.8)
Capital lease obligations incurred	0.4	0.3
Interest rate swap derivative mark to market		$ 8.7