XML 83 R67.htm IDEA: XBRL DOCUMENT
v3.20.4

Shareholders' Equity / Partners' Capital - Noncontrolling Interest Narrative (Details) - Operating Partnership - Class A Units - shares | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Class of Stock [Line Items] |  |
Units outstanding (in shares) | 368,383,440 | 352,769,654
American Residential Properties Inc. |  |
Class of Stock [Line Items] |  |
Percentage of units outstanding | 0.20% | 0.20%
Units outstanding (in shares) | 596,990 | 596,990
AH LLC |  |
Class of Stock [Line Items] |  |
Units owned (in shares) | 51,129,990 | 51,429,990
Percentage of units outstanding | 13.90% | 14.60%

X
- Definition The number of units of the operating partnership owned by the noncontrolling interest, a related party. + References No definition available. + Details
Name: | amh_NoncontrollingInterestUnitsOwnedInOperatingPartnership
Namespace Prefix: | amh_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16(a)) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16(b)) -URI http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
Name: | us-gaap_PartnersCapitalAccountUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_OwnershipAxis=amh_OperatingPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalUnitsByClassAxis=amh_ClassAUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=amh_AmericanResidentialPropertiesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=amh_AHLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |