| **Basis of Presentation Basis of Presentation - Table 3 (Details)**           | 3 Months Ended                                                                                                   |
|-------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------|
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| **Health Care Organization, Receivable and Revenue Disclosures [Line Items]** |                                                                                                             |   |
| Medicare                                                                      | 74.90%hls_PercentageOfNetOperatingRevenuesMedicare                                                               | 75.20%hls_PercentageOfNetOperatingRevenuesMedicare |
| Medicaid                                                                      | 2.60%hls_PercentageOfNetOperatingRevenuesMedicaid                                                                | 1.30%hls_PercentageOfNetOperatingRevenuesMedicaid |
| Workers’ compensation                                                  | 0.90%hls_PercentageOfNetOperatingRevenuesWorkersCompensation                                                     | 1.30%hls_PercentageOfNetOperatingRevenuesWorkersCompensation |
| Managed care and other discount plans, including Medicare Advantage           | 18.20%hls_PercentageOfNetOperatingRevenuesManagedCare                                                            | 18.10%hls_PercentageOfNetOperatingRevenuesManagedCare |
| Other third-party payors                                                      | 1.50%hls_PercentageOfNetOperatingRevenuesOtherThirdPartyPayors                                                   | 1.60%hls_PercentageOfNetOperatingRevenuesOtherThirdPartyPayors |
| Patients                                                                      | 0.70%hls_PercentageOfNetOperatingRevenuesPatients                                                                | 1.00%hls_PercentageOfNetOperatingRevenuesPatients |
| Other income                                                                  | 1.20%hls_PercentageOfNetOperatingRevenuesOtherIncome                                                             | 1.50%hls_PercentageOfNetOperatingRevenuesOtherIncome |
| Total                                                                         | 100.00%hls_PercentageOfNetOperatingRevenuesTotal                                                                 | 100.00%hls_PercentageOfNetOperatingRevenuesTotal |
| Home Health and Hospice [Member]                                              |                                                                                                             |   |
| **Health Care Organization, Receivable and Revenue Disclosures [Line Items]** |                                                                                                             |   |
| Medicare                                                                      | 83.80%hls_PercentageOfNetOperatingRevenuesMedicare/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082             | 96.20%hls_PercentageOfNetOperatingRevenuesMedicare/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |
| Medicaid                                                                      | 5.60%hls_PercentageOfNetOperatingRevenuesMedicaid/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082              | 0.00%hls_PercentageOfNetOperatingRevenuesMedicaid/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |
| Workers’ compensation                                                  | 0.00%hls_PercentageOfNetOperatingRevenuesWorkersCompensation/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082   | 0.40%hls_PercentageOfNetOperatingRevenuesWorkersCompensation/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |
| Managed care and other discount plans, including Medicare Advantage           | 10.40%hls_PercentageOfNetOperatingRevenuesManagedCare/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082          | 2.00%hls_PercentageOfNetOperatingRevenuesManagedCare/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |
| Other third-party payors                                                      | 0.10%hls_PercentageOfNetOperatingRevenuesOtherThirdPartyPayors/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 | 1.40%hls_PercentageOfNetOperatingRevenuesOtherThirdPartyPayors/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |
| Patients                                                                      | 0.10%hls_PercentageOfNetOperatingRevenuesPatients/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082              | 0.00%hls_PercentageOfNetOperatingRevenuesPatients/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |
| Total                                                                         | 100.00%hls_PercentageOfNetOperatingRevenuesTotal/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082               | 100.00%hls_PercentageOfNetOperatingRevenuesTotal/ us-gaap_StatementBusinessSegmentsAxis= sic_Z8082 |

| X                                                                                                                                                                                                                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to managed care and other discount plans.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesManagedCare**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to Medicaid.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesMedicaid**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to Medicare.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesMedicare**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to miscelleneous or non-core income.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesOtherIncome**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to other third-party payors.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesOtherThirdPartyPayors**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to self-pay patients.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesPatients**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total percentage of net operating revenues as it relates to the Company's concentration of revenue by payor.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesTotal**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of net operating revenues related to workers’ compensation.
+ References
No definition available.
+ Details**Name:**hls_PercentageOfNetOperatingRevenuesWorkersCompensation**Namespace Prefix:**hls_**Data Type:**num:percentItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_HealthCareOrganizationReceivableAndRevenueDisclosuresLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_StatementBusinessSegmentsAxis=sic_Z8082**Namespace Prefix:****Data Type:**na**Balance Type:****Period Type:** |