Summary of Significant Accounting Policies (Accrued Health Plan Claims and Settlements) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011
Accrued Health Plan Claim and Settlements [Abstract]
Health plan claims expense	$ 577.4	[1]	$ 578.9	[1]	$ 686.3	[1]
Accrued health plan claims and settlements	72.6		74.8
Decrease in health plan claims and settlement reserve	1.7		14.5		12.7
Decrease in health plan claims and settlement reserve, net of taxes	1.0		8.8		7.8
Decrease in health plan claims and settlement reserve, per diluted share	$ 0.01		$ 0.11		$ 0.17
Intercompany expense, health claims expenses	$ 40.1		$ 42.4		$ 41.3

[1] The Company eliminates in consolidation those patient service revenues earned by its health care facilities attributable to services provided to members in its owned health plans and eliminates the corresponding medical claims expenses incurred by the health plans for those services.