Summary of Business Organization, Operations and Significant Accounting Policies (Reserve for Insurance Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General liability insurance maximum recoverage per occurrence	$ 67.0
GEO care insurance maximum recoverable per occurrence	35.0
Deductible amount for general insurance liability and hospital professional insurance liability	3.0
Deductible amount for worker's compensation insurance liability	2.0
Deductible amount for automobile insurance liability	1.0
Undiscounted reserves for workers compensation and general liability claims	$ 49.5	$ 47.6