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Estimated number of apartment homes in communities awaiting development.

No definition available.

Name:	avb_EstimatedNumberOfApartmentHomesInCommunitiesExpectedToBeDeveloped
Namespace Prefix:	avb_
Data Type:	xbrli:integerItemType
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Expected aggregate number of homes to be constructed.

No definition available.

Name:	avb_ExpectedAggregateNumberOfApartmentHomesToBeConstructed
Namespace Prefix:	avb_
Data Type:	xbrli:integerItemType
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Number of apartment homes under reconstruction within communities with apartments under reconstruction.

No definition available.

Name:	avb_NumberOfApartmentHomesUnderReconstruction
Namespace Prefix:	avb_
Data Type:	xbrli:integerItemType
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Period Type:	instant

Number of communities with apartments under reconstruction.

No definition available.

Name:	avb_NumberOfCommunitiesWithApartmentsUnderReconstruction
Namespace Prefix:	avb_
Data Type:	xbrli:integerItemType
Balance Type:	na
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Number of owned communities (or where a direct or indirect interest is owned) that are under construction.

No definition available.

Name:	avb_NumberOfOwnedCommunitiesUnderConstruction
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Data Type:	xbrli:integerItemType
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Represents the period for life of lease.

No definition available.

Name:	avb_PeriodOfLeaseLife
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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
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Data Type:	xbrli:durationItemType
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The number of real estate properties owned as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfRealEstateProperties
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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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The number of units in a real estate property owned as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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- References

No definition available.

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
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Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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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_RealEstatePropertiesLineItems
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Data Type:	xbrli:stringItemType
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Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
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Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
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