| **Basis of Presentation (Tables)**                                            | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
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| **Health Care Organization, Receivable and Revenue Disclosures [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Concentration of Net Operating Revenues by Payor                              | We derived consolidated Net operating revenues from the following payor sources: Three Months Ended June 30,  Six Months Ended June 30, 2016 2015 2016 2015Medicare74.7% 74.5% 75.1% 74.7%Medicare Advantage8.1% 7.7% 7.9% 8.0%Managed care10.0% 10.1% 9.8% 10.0%Medicaid3.2% 3.1% 3.3% 2.9%Other third-party payors1.4% 1.8% 1.4% 1.6%Workers’ compensation0.7% 0.9% 0.8% 0.9%Patients0.5% 0.6% 0.5% 0.6%Other income1.4% 1.3% 1.2% 1.3%Total100.0% 100.0% 100.0% 100.0%                           |
| Inpatient Rehabilitation Hospital [Member]                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| **Health Care Organization, Receivable and Revenue Disclosures [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Concentration of Net Operating Revenues by Payor                              | Our inpatient rehabilitation segment derived its Net operating revenues from the following payor sources: Three Months Ended June 30,  Six Months Ended June 30, 2016 2015 2016 2015Medicare73.1% 72.7% 73.3% 73.1%Medicare Advantage7.8% 7.8% 7.7% 8.1%Managed care11.5% 11.4% 11.2% 11.3%Medicaid2.9% 2.6% 3.0% 2.3%Other third-party payors1.7% 2.1% 1.7% 1.9%Workers’ compensation0.8% 1.1% 1.0% 1.1%Patients0.6% 0.7% 0.6% 0.7%Other income1.6% 1.6% 1.5% 1.5%Total100.0% 100.0% 100.0% 100.0% |
| Home Health and Hospice [Member]                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| **Health Care Organization, Receivable and Revenue Disclosures [Line Items]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Concentration of Net Operating Revenues by Payor                              | Our home health and hospice segment derived its Net operating revenues from the following payor sources: Three Months Ended June 30,  Six Months Ended June 30, 2016 2015 2016 2015Medicare82.3% 83.9% 82.9% 83.8%Medicare Advantage9.0% 7.2% 8.9% 7.3%Managed care3.7% 2.9% 3.2% 3.0%Medicaid4.8% 5.8% 4.8% 5.7%Other third-party payors—% 0.1% —% 0.1%Patients0.1% 0.1% 0.1% 0.1%Other income0.1% —% 0.1% —%Total100.0% 100.0% 100.0% 100.0%                                                   |

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Tabular disclosure of the concentration of net operating revenues by payor class as a percentage of total net operating revenues.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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No definition available.
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