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Basis of Presentation - Net Operating Revenues (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | $ 1,135.0 | $ 1,067.7 | $ 2,259.0 | $ 2,113.7
Inpatient Rehabilitation Segment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 873.9 | 834.6 | 1,744.0 | 1,674.9
Home Health and Hospice Segment [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 261.1 | 233.1 | 515.0 | 438.8
Net operating revenues [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 1,135.0 | 1,067.7 | 2,259.0 | 2,113.7
Net operating revenues [Member] | Other income [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 12.0 | 11.7 | 24.3 | 21.7
Net operating revenues [Member] | Inpatient Rehabilitation Segment [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 873.9 | 834.6 | 1,744.0 | 1,674.9
Net operating revenues [Member] | Inpatient Rehabilitation Segment [Member] | Other income [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 11.7 | 11.5 | 23.7 | 21.3
Net operating revenues [Member] | Home Health and Hospice Segment [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 261.1 | 233.1 | 515.0 | 438.8
Net operating revenues [Member] | Home Health and Hospice Segment [Member] | Other income [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 0.3 | 0.2 | 0.6 | 0.4
Net operating revenues [Member] | Third-Party Payor [Member] | Medicare [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 850.1 | 806.3 | 1,704.5 | 1,607.7
Net operating revenues [Member] | Third-Party Payor [Member] | Medicare Advantage [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 123.7 | 100.5 | 233.7 | 193.0
Net operating revenues [Member] | Third-Party Payor [Member] | Managed Care [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 94.5 | 95.3 | 186.4 | 187.9
Net operating revenues [Member] | Third-Party Payor [Member] | Medicaid [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 31.7 | 29.5 | 62.3 | 54.7
Net operating revenues [Member] | Third-Party Payor [Member] | Other third-party payors [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 10.5 | 12.7 | 20.5 | 24.7
Net operating revenues [Member] | Third-Party Payor [Member] | Workers' compensation [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 6.8 | 7.0 | 15.1 | 14.5
Net operating revenues [Member] | Third-Party Payor [Member] | Inpatient Rehabilitation Segment [Member] | Medicare [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 629.0 | 607.1 | 1,268.4 | 1,231.6
Net operating revenues [Member] | Third-Party Payor [Member] | Inpatient Rehabilitation Segment [Member] | Medicare Advantage [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 97.0 | 78.7 | 181.5 | 151.2
Net operating revenues [Member] | Third-Party Payor [Member] | Inpatient Rehabilitation Segment [Member] | Managed Care [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 86.5 | 86.6 | 170.1 | 171.6
Net operating revenues [Member] | Third-Party Payor [Member] | Inpatient Rehabilitation Segment [Member] | Medicaid [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 27.1 | 26.8 | 53.4 | 51.5
Net operating revenues [Member] | Third-Party Payor [Member] | Inpatient Rehabilitation Segment [Member] | Other third-party payors [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 10.5 | 12.7 | 20.5 | 24.7
Net operating revenues [Member] | Third-Party Payor [Member] | Inpatient Rehabilitation Segment [Member] | Workers' compensation [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 6.5 | 6.8 | 14.7 | 14.2
Net operating revenues [Member] | Third-Party Payor [Member] | Home Health and Hospice Segment [Member] | Medicare [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 221.1 | 199.2 | 436.1 | 376.1
Net operating revenues [Member] | Third-Party Payor [Member] | Home Health and Hospice Segment [Member] | Medicare Advantage [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 26.7 | 21.8 | 52.2 | 41.8
Net operating revenues [Member] | Third-Party Payor [Member] | Home Health and Hospice Segment [Member] | Managed Care [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 8.0 | 8.7 | 16.3 | 16.3
Net operating revenues [Member] | Third-Party Payor [Member] | Home Health and Hospice Segment [Member] | Medicaid [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 4.6 | 2.7 | 8.9 | 3.2
Net operating revenues [Member] | Third-Party Payor [Member] | Home Health and Hospice Segment [Member] | Other third-party payors [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 0.0 | 0.0 | 0.0 | 0.0
Net operating revenues [Member] | Third-Party Payor [Member] | Home Health and Hospice Segment [Member] | Workers' compensation [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 0.3 | 0.2 | 0.4 | 0.3
Net operating revenues [Member] | Self-Pay [Member] | Patients [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 5.7 | 4.7 | 12.2 | 9.5
Net operating revenues [Member] | Self-Pay [Member] | Inpatient Rehabilitation Segment [Member] | Patients [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | 5.6 | 4.4 | 11.7 | 8.8
Net operating revenues [Member] | Self-Pay [Member] | Home Health and Hospice Segment [Member] | Patients [Member] | Payor Source [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net operating revenues | $ 0.1 | $ 0.3 | $ 0.5 | $ 0.7

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