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Label | Element | Value
--- | --- | ---
Loss Contingency, Minimum Amount to Consider Accruing an Estimate of Related Legal Fees | hls_LossContingencyMinimumAmounttoConsiderAccruinganEstimateofRelatedLegalFees | $ 5,000,000
Medicare Denials, Percentage Collected After Appeal, Including Administrative Law Judge Hearings | hls_MedicareDenialsPercentageCollectedAfterAppealIncludingAdministrativeLawJudgeHearings | 70.00%
Advertising Expense | us-gaap_AdvertisingExpense | $ 5,300,000
Advertising Expense | us-gaap_AdvertisingExpense | 7,300,000
Advertising Expense | us-gaap_AdvertisingExpense | $ 7,500,000
Sales Revenue, Net [Member] | Payor Source [Member] | Medicare [Member] | RAC Audits [Member] |  |
Concentration Risk, Percentage | us-gaap_ConcentrationRiskPercentage1 | 1.00%

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- Definition The minimum dollar amount that must be accrued for a loss contingency related to a specific legal dispute that can be utilized for consideration prior to accruing an estimate of the legal fees related to this specific legal dispute. + References No definition available. + Details
Name: | hls_LossContingencyMinimumAmounttoConsiderAccruinganEstimateofRelatedLegalFees
Namespace Prefix: | hls_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The historical collection percentage of accounts receivable that have been denied and appealed up to an administrative law judge hearing as of the balance sheet date. The denial of certain diagnosis codes by Medicare contractors are based on medical necessity and in most instances are disputed or appealed by the Company. + References No definition available. + Details
Name: | hls_MedicareDenialsPercentageCollectedAfterAppealIncludingAdministrativeLawJudgeHearings
Namespace Prefix: | hls_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=hls_PayorSourceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_CounterpartyNameAxis=hls_MedicareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=hls_RACAuditsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |