Revenues and Revenue Deductions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012
Health Care Organization, Disclosures for Certain Health Care Entities [Abstract]
Minimum days aged for 100% reserve			365 days
Maximum days aged for standard percentage reserve for uninsured accounts			365 days
Maximum days aged for standard percentage reserve for self-pay after insurance/Medicare accounts			365 days
Allowance for doubtful accounts	$ 371.4		$ 371.4		$ 366.5
Allowance for doubtful accounts as a percentage of accounts receivable			36.30%		34.30%
Allowance for doubtful accounts, uninsured discounts and charity care as a percentage of accounts receivable			100.00%		100.00%
Uncompensated care, prior to uncompensated care deductions			324	291
Charity Care [Abstract]
Revenue deduction	62.9	57.4	180.0	169.2
Estimated costs	14.7	15.3	42.0	45.0
Health Care Organization, Third Party Settlements [Abstract]
Change in income from continuing operations due to adjustment for final settlement	(0.3)	1.8	(0.8)	6.7
Change in income from continuing operations due to adjustment for final settlement, net of tax	(0.2)	1.1	(0.5)	4.1
Change in earnings per diluted share due to adjustment for final settlement		$ 0.01	$ 0.01	$ 0.05
Health Care Organization, Recovery Audit Program [Abstract]
Maximum period from claim date for Recovery Audit			3 years
Increase (decrease) in Recovery Audit Program reserve			(14.5)
Increase (decrease) in Recovery Audit Program reserve, net of taxes			(8.9)
Increase (decrease) in diluted earnings per share due to change in Recovery Audit Program reserve			$ (0.11)
Patient service revenues	1,467.2	1,525.5	4,412.6	4,305.1
Patient Service Revenues, Gross, as Percentage of Patient Service Revenues, Net	111.50%	109.60%	112.30%	110.30%
Less: Provision for doubtful accounts	(151.2)	(133.8)	(482.5)	(401.5)
Patient Service Revenue Provision for Bad Debts, As Percentage of Patient Service Revenues, Net	(11.50%)	(9.60%)	(12.30%)	(10.30%)
Patient service revenues, net	1,316.0	1,391.7	3,930.1	3,903.6
Percentage of patient service revenues, net	100.00%	100.00%	100.00%	100.00%
Other accrued expenses and current liabilities [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Recovery Audit Program reserve, current	2.2		2.2		1.9
Other liabilities [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Recovery Audit Program reserve, noncurrent	9.2		9.2		23.8
Minimum [Member]
Charity Care [Abstract]
Percent of federal poverty guidelines			200.00%
Maximum [Member]
Charity Care [Abstract]
Percent of federal poverty guidelines			500.00%
Medicare [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	361.8	408.0	1,055.4	1,068.1
Percentage of patient service revenues, net	27.50%	29.30%	26.90%	27.40%
Medicaid [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	156.5	189.0	499.5	535.0
Percentage of patient service revenues, net	11.90%	13.60%	12.70%	13.70%
Managed Medicare [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	161.6	145.7	451.5	403.0
Percentage of patient service revenues, net	12.30%	10.50%	11.50%	10.30%
Managed Medicaid [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	140.6	129.3	398.2	364.1
Percentage of patient service revenues, net	10.70%	9.30%	10.10%	9.30%
Managed Care [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	411.3	444.4	1,268.5	1,280.9
Percentage of patient service revenues, net	31.30%	31.90%	32.30%	32.80%
Commercial [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	22.0	17.4	62.3	50.7
Percentage of patient service revenues, net	1.70%	1.30%	1.60%	1.30%
Third-Party Payor [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	1,253.8	1,333.8	3,735.4	3,701.8
Percentage of patient service revenues, net	95.30%	95.80%	95.00%	94.80%
Self-Pay [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	152.8	131.6	502.1	421.2
Percentage of patient service revenues, net	11.60%	9.50%	12.80%	10.80%
Other [Member]
Health Care Organization, Recovery Audit Program [Abstract]
Patient service revenues	$ 60.6	$ 60.1	$ 175.1	$ 182.1
Percentage of patient service revenues, net	4.60%	4.30%	4.50%	4.70%