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Description containing the percentage ownership required in order for a variable interest entity (VIE) to be consolidated in the entity's financial statements.

No definition available.

Name:	amed_MinimumPercentOwnershipForControllingInterestPercent
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Description containing the number of care centers owned by the entity as of the balance sheet date.

No definition available.

Name:	amed_OperatingCareCenters
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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.

No definition available.

Name:	us-gaap_ConcentrationRiskLineItems
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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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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-Name Accounting Standards Codification
-Topic 210
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-Subparagraph (SX 210.5-02.12)
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Name:	us-gaap_EquityMethodInvestmentAggregateCost
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of realized and unrealized gain (loss) on investment.

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-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Name:	us-gaap_ProceedsFromSaleOfEquityMethodInvestments
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Name:	amed_TypeofEquityMethodInvestmentAxis=amed_HeritageHealthcareInnovationFundLPMember
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Name:	amed_TypeofEquityMethodInvestmentAxis=amed_MedalogixMember
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Name:	us-gaap_StatementBusinessSegmentsAxis=amed_HomeHealthMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_StatementBusinessSegmentsAxis=amed_HospiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementBusinessSegmentsAxis=amed_PersonalCareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_RevenueFromContractWithCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_ProductConcentrationRiskMember
Namespace Prefix:
Data Type:	na
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