Business and Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012 Hospitals Beds Centers	Dec. 31, 2011	Dec. 31, 2012 Hospitals Beds Centers	Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of acute care hospitals owned and managed	28		28
Number of licensed beds	7,064		7,064
Number of surgery centers	2		2
Corporate office costs	$ 18.2	$ 12.6	$ 33.0	$ 26.9