XML 73 R34.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Organization and Basis of Presentation (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 community property home state
Organization and Basis of Presentation |
Number of operating apartment communities owned | 251 us-gaap_NumberOfRealEstateProperties
Number of apartment homes included in operating apartment communities owned | 73,963 us-gaap_NumberOfUnitsInRealEstateProperty
Number of states where operating apartment communities owned are located | 11 us-gaap_NumberOfStatesInWhichEntityOperates
Number of communities with apartments under reconstruction | 8 avb_NumberOfCommunitiesWithApartmentsUnderReconstruction
Number of apartment homes under reconstruction | 2,938 avb_NumberOfApartmentHomesUnderReconstruction
Number of owned communities under construction | 26 avb_NumberOfOwnedCommunitiesUnderConstruction
Expected number of apartment homes under construction | 8,524 avb_ExpectedAggregateNumberOfApartmentHomesToBeConstructed
Communities under development rights | 37 avb_AdditionalNumberofCommunitiesExpectedToBeDeveloped
Estimated number of apartment homes in communities to be developed | 10,384 avb_EstimatedNumberOfApartmentHomesInCommunitiesExpectedToBeDeveloped
Period of lease (in years) | 1 year
Real Estate |
Number of land parcels acquired under development rights | 1 avb_NumberOfLandParcelsAcquired
Buildings and Building Improvements |
Real Estate |
Capitalization of minimum improvements and upgrades | 15,000 avb_MinimumAmountOfImprovementsAndUpgradesForCapitalization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingAndBuildingImprovementsMember
Buildings and Building Improvements | Minimum |
Real Estate |
Estimated useful life of buildings and improvements (in years) | 7 years
Buildings and Building Improvements | Maximum |
Real Estate |
Estimated useful life of buildings and improvements (in years) | 30 years
Computers and furniture |
Real Estate |
Capitalization of minimum improvements and upgrades | 2,500 avb_MinimumAmountOfImprovementsAndUpgradesForCapitalization / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember
Computers and furniture | Minimum |
Real Estate |
Estimated useful life of buildings and improvements (in years) | 3 years
Computers and furniture | Maximum |
Real Estate |
Estimated useful life of buildings and improvements (in years) | 7 years

X
- Definition Additional number of communities owned (or in which a direct or indirect ownership interest is held) that can be expected to be developed. + References No definition available. + Details
Name: | avb_AdditionalNumberofCommunitiesExpectedToBeDeveloped
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Estimated number of apartment homes in communities awaiting development. + References No definition available. + Details
Name: | avb_EstimatedNumberOfApartmentHomesInCommunitiesExpectedToBeDeveloped
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expected aggregate number of homes to be constructed. + References No definition available. + Details
Name: | avb_ExpectedAggregateNumberOfApartmentHomesToBeConstructed
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minimum amount of improvements and upgrades for land, building structures, furniture, fixtures and equipment, and other costs incurred during their development, redevelopment and acquisition. + References No definition available. + Details
Name: | avb_MinimumAmountOfImprovementsAndUpgradesForCapitalization
Namespace Prefix: | avb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of apartment homes under reconstruction within communities with apartments under reconstruction. + References No definition available. + Details
Name: | avb_NumberOfApartmentHomesUnderReconstruction
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of communities with apartments under reconstruction. + References No definition available. + Details
Name: | avb_NumberOfCommunitiesWithApartmentsUnderReconstruction
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of land parcels acquired as development rights. + References No definition available. + Details
Name: | avb_NumberOfLandParcelsAcquired
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of owned communities (or where a direct or indirect interest is owned) that are under construction. + References No definition available. + Details
Name: | avb_NumberOfOwnedCommunitiesUnderConstruction
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the period for life of lease. + References No definition available. + Details
Name: | avb_PeriodOfLeaseLife
Namespace Prefix: | avb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RealEstatePropertiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |