| **Basis of Presentation (Tables)**                                                  | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| **Organization, Consolidation and Presentation of Financial Statements [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Concentration of Net Operating Revenues by Payor                                    | We derived consolidated Net operating revenues from the following payor sources: Three Months Ended September 30,  Nine Months Ended September 30, 2016 2015 2016 2015Medicare74.8% 75.1% 75.0% 74.8%Medicare Advantage7.9% 7.5% 7.9% 7.8%Managed care10.1% 9.9% 9.9% 10.0%Medicaid3.3% 3.4% 3.3% 3.0%Other third-party payors1.5% 1.5% 1.4% 1.6%Workers’ compensation0.8% 0.8% 0.8% 0.9%Patients0.5% 0.5% 0.5% 0.6%Other income1.1% 1.3% 1.2% 1.3%Total100.0% 100.0% 100.0% 100.0%Inpatient Rehabilitation RevenuesOur inpatient rehabilitation segment derived its Net operating revenues from the following payor sources: Three Months Ended September 30,  Nine Months Ended September 30, 2016 2015 2016 2015Medicare73.3% 73.2% 73.3% 73.0%Medicare Advantage7.6% 7.7% 7.7% 7.9%Managed care11.4% 11.2% 11.3% 11.3%Medicaid3.0% 3.0% 3.0% 2.6%Other third-party payors1.8% 1.7% 1.7% 1.9%Workers’ compensation1.0% 1.0% 1.0% 1.1%Patients0.6% 0.6% 0.6% 0.7%Other income1.3% 1.6% 1.4% 1.5%Total100.0% 100.0% 100.0% 100.0%Home Health and Hospice RevenuesOur home health and hospice segment derived its Net operating revenues from the following payor sources: Three Months Ended September 30,  Nine Months Ended September 30, 2016 2015 2016 2015Medicare81.8% 84.7% 82.4% 84.1%Medicare Advantage8.8% 6.7% 8.9% 7.1%Managed care4.5% 2.9% 3.7% 2.9%Medicaid4.7% 5.7% 4.8% 5.7%Other third-party payors—% —% —% 0.1%Patients0.1% —% 0.1% 0.1%Other income0.1% —% 0.1% —%Total100.0% 100.0% 100.0% 100.0% |

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No definition available.
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| - Definition
Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.
+ References
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