| **Segment Reporting Segment Reporting - Table 4 (Details) - USD ($) $ in Millions**                                                                                                                                                                                                                                                                                                    | 6 Months Ended | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|-----------------|
||
| **Segment Reporting, Asset Reconciling Item [Line Items]**                                                                                                                                                                                                                                                                                                                             |           |                 |   |
| Total assets for reportable segments                                                                                                                                                                                                                                                                                                                                                   | $ 4,632.6      | [1]             | $ 4,606.1 |
| Reclassification of noncurrent deferred income tax liabilities to net noncurrent deferred income tax assets                                                                                                                                                                                                                                                                            | (71.3)         |                 | (71.3) |
| Total assets                                                                                                                                                                                                                                                                                                                                                                           | 4,632.6        | [1]             | 4,606.1 |
| Inpatient Rehabilitation Hospital and Home Health and Hospice [Member]                                                                                                                                                                                                                                                                                                                 |           |                 |   |
| **Segment Reporting, Asset Reconciling Item [Line Items]**                                                                                                                                                                                                                                                                                                                             |           |                 |   |
| Total assets for reportable segments                                                                                                                                                                                                                                                                                                                                                   | 4,703.9        |                 | 4,677.4 |
| Total assets                                                                                                                                                                                                                                                                                                                                                                           | $ 4,703.9      |                 | $ 4,677.4 |
|                                                                                                                                                                                                                                                                                                                                                                                        |
| [1](1) Our consolidated assets as of June 30, 2016 include total assets of variable interest entities of $255.3 million, which cannot be used by us to settle the obligations of other entities. Our consolidated liabilities as of June 30, 2016 include total liabilities of the variable interest entities of $54.6 million. See Note 3, Variable Interest Entities. |

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7
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The amount of a reclassification adjustment made to prior period financial statement amounts.
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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.
+ References
No definition available.
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