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Acquisitions and Dispositions (Details 2)	0 Months Ended
	Dec. 31, 2012	Dec. 31, 2014 property	Dec. 31, 2013 property	Sep. 20, 2012 property	Mar. 15, 2013 property
Acquisitions And Dispositions
Number of properties		34,599us-gaap_NumberOfRealEstateProperties	23,268us-gaap_NumberOfRealEstateProperties
Class B common shares
Acquisitions And Dispositions
Preferred units issued	653,492us-gaap_PreferredUnitsIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Percentage of promoted interest distributions made from RJ1 to RJ LLC	20.00%amh_PercentageOfPromotionalInterestOfAllDistributableCashAvailableForDistribution / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
RJ American Homes 4 Rent One, LLC [Member]
Acquisitions And Dispositions
Number of properties				177us-gaap_NumberOfRealEstateProperties / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesOneMember
Ownership interest (as a percent)				100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesOneMember
RJ American Homes 4 Rent One, LLC [Member] | Class B common shares
Acquisitions And Dispositions
Ownership interest (as a percent)				33.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesOneMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
RJ American Homes 4 Rent One, LLC [Member] | Class A common shares
Acquisitions And Dispositions
Ownership interest (as a percent)				67.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesOneMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
RJ American Homes 4 Rent Two, LLC [Member]
Acquisitions And Dispositions
Number of properties					214us-gaap_NumberOfRealEstateProperties / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesTwoMember
Ownership interest (as a percent)					100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesTwoMember
RJ American Homes 4 Rent Two, LLC [Member] | Class B common shares
Acquisitions And Dispositions
Ownership interest (as a percent)					33.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesTwoMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
RJ American Homes 4 Rent Two, LLC [Member] | Class A common shares
Acquisitions And Dispositions
Ownership interest (as a percent)					67.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = amh_RaymondJamesTwoMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember

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Percentage Of Promotional Interest Of All Distributable Cash Available For Distribution

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055



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-Name Accounting Standards Codification

-Topic 505

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