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Description containing the percentage ownership required in order for an investment to be treated under the equity method of accounting in the entity's financial statements.

No definition available.

Name:	amed_MaximumPercentOwnershipForEquityMethodPercent
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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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Noncontrolling Interest Repurchased

No definition available.

Name:	amed_NoncontrollingInterestRepurchased
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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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- References

No definition available.

Name:	amed_OrganizationAndNatureOfOperationsLineItems
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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.

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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Data Type:	xbrli:monetaryItemType
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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
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The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
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Data Type:	xbrli:integerItemType
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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Name Accounting Standards Codification
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Name:	us-gaap_RetainedEarningsAccumulatedDeficit
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Name:	us-gaap_ConcentrationRiskByTypeAxis=amed_MedicareRevenueMember
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Data Type:	na
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