Business Combinations - Textual (Details) $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Oct. 31, 2015 USD ($)	Aug. 31, 2015 USD ($)	Apr. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Oct. 01, 2015	May. 31, 2015
Business Acquisition (Textual) [Abstract]
Net cash paid for acquisition						$ 87.1	$ 15.9
Inpatient Rehabilitation Hospital [Member]
Business Acquisition (Textual) [Abstract]
Number of Beds Acquired			50						158
Net cash paid for acquisition				$ 0.0	$ 0.0	56.6	15.9
Noncontrolling Interest, Ownership Percentage by Parent			83.00%
Goodwill, Acquired During Period			$ 0.7	0.0	0.0	0.7	34.8
Number of Beds Acquired, Skilled Nursing Facility									74
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 0.0
Home Health and Hospice [Member]
Business Acquisition (Textual) [Abstract]
Net cash paid for acquisition				9.3	0.0	30.5	0.0
Payments to Acquire Businesses, Gross		$ 170.0
Goodwill, Acquired During Period				7.5	$ 0.0	20.3	$ 0.0
Business Acquisition, Goodwill, Expected Tax Deductible Amount				$ 20.3		$ 20.3
Subsequent Event [Member] | Inpatient Rehabilitation Hospital [Member]
Business Acquisition (Textual) [Abstract]
Number of Locations of an Acquired Entity								11
Number of Beds Acquired								902
Net cash paid for acquisition	$ 730.0