Subsequent Events (Acquisitions Narrative) (Details) (Memorial Health Systems [Member], Subsequent Event [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Jul. 02, 2012
Subsequent Event [Line Items]
Business Acquisition, Effective Date of Acquisition	Jul. 01, 2012
Business Acquisition, Cost of Acquired Entity, Cash Paid for Fixed Assets	$ 45.0
Business Acquisition, Cost of Aquired Entity, Cash Paid Including Working Capital	2.6
Business Acquisition, Purchase Agreement Clause on Required Minimum Spending to Build Replacement Hospital	$ 75.0
Business Acquisition, Maximum Number of Years for Completion of Replacement Hospital Construction	five
Memorial Hospital [Member]
Subsequent Event [Line Items]
Business Acquisition, Number of Licensed Hospital or Facility Beds	100