Significant Accounting Policies (State Health Programs Rate Adjustment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Significant Accounting Policies [Abstract]
Percent Reduction In Provider Reimbursement Rates			10.00%
Medicaid Retro Rate Adjustment	$ 31.5	$ 21.7