Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued self insurance	$ 22.4	$ 16.3
Operating loss carryforward	10.6	11.5
Compensation and benefits	8.3	12.3
Property and equipment	7.8	7.2
Bed debts	3.9	2.5
Other	9.9	9.0
Valuation allowance	(2.0)	(2.8)
Total deferred tax assets	60.9	56.0
Property and equipment	70.4	61.5
Goodwill	32.8	34.6
Other intangible assets	26.7	34.3
Other	19.5	14.9
Total deferred tax liabilities	177.0	168.0
Deferred tax liabilities, net	(116.1)	(112.0)
Noncontrolling Interest and Earnings Losses Equity Investments [Member] | E C Source Services Llc Investee [Member]
Deferred tax liabilities, tax deferred income	11.1	11.1
Trade Accounts Receivable [Member]
Deferred tax liabilities, tax deferred income	$ 16.5	$ 11.6