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Acquisitions and Dispositions (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2013	Jun. 14, 2013	Dec. 31, 2012
Acquisitions And Dispositions
Units issue to Sponsor, value	$ 500us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
3.5% Convertible Perpetual Preferred Units
Acquisitions And Dispositions
Preferred Units converted into Class A units		653,492amh_ConversionOfPreferredUnits / us-gaap_StatementClassOfStockAxis = amh_ThreePointFivePercentageConvertiblePerpetualPreferredUnitsMember
Class A common shares
Acquisitions And Dispositions
Units issued upon conversion		653,492us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Sponsor | 3.5% Convertible Perpetual Preferred Units
Acquisitions And Dispositions
Preferred Units converted into Class A units		653,492amh_ConversionOfPreferredUnits / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = amh_SponsorMember / us-gaap_StatementClassOfStockAxis = amh_ThreePointFivePercentageConvertiblePerpetualPreferredUnitsMember
Rate of Preferred units			3.50%amh_DividendRateForPreferredUnits / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = amh_SponsorMember / us-gaap_StatementClassOfStockAxis = amh_ThreePointFivePercentageConvertiblePerpetualPreferredUnitsMember
Sponsor | Class A common shares
Acquisitions And Dispositions
Common shares issue to Sponsor in 2012 offering		705,167us-gaap_StockIssuedDuringPeriodSharesAcquisitions / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = amh_SponsorMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Units issue to Sponsor, value		11,300us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = amh_SponsorMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Conversion ratio		1amh_StockIssuedDuringPeriodAcquisitionsConversionRatio / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = amh_SponsorMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
RJ LLC, RJ1 and RJ2
Acquisitions And Dispositions
Number of single-family properties		377amh_ContributionOfPropertyNumberOfProperties / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Estimated fair values of the net assets
Land		10,340us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Building and improvements		54,123us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Value of in-place leases		539amh_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLease / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Cash and cash equivalents		1,128us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Other current assets and liabilities, net		(311)amh_BusinessCombinationRecognizedIdentifiableOtherCurrentAssetsAcquiredAndOtherCurrentLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Note payable		(7,600)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Noncontrolling interest		(39,321)us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
Fair value of acquired net assets		18,898us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCRJAmericanHomesFourRentOneLLCRJAmericanHomesFourRentTwoLLCMember
RJ LLC
Acquisitions And Dispositions
Ownership interest (as a percent)		100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RJAmericanHomesFourRentInvestmentsLLCMember

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

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