XML 48 R45.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Investments in Real Estate Entities (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 community | Dec. 31, 2014 community | Dec. 31, 2013 | Dec. 31, 2012
Investment in Real Estate Entities |  |  |  |
Number of apartment communities sold | 8 avb_NumberofApartmentCommunitiesSold | 4 avb_NumberofApartmentCommunitiesSold |  |
Proceeds from sale of real estate |  | $ 281,125 us-gaap_ProceedsFromSaleOfRealEstate | $ 919,442 us-gaap_ProceedsFromSaleOfRealEstate | $ 274,018 us-gaap_ProceedsFromSaleOfRealEstate
Gain on sale of communities |  | 333,221 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 96,152 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 106,195 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Gain on sale of land |  | 490 us-gaap_GainLossOnSaleOfOtherAssets | 240 us-gaap_GainLossOnSaleOfOtherAssets | 280 us-gaap_GainLossOnSaleOfOtherAssets
Repayments of secured mortgages |  | 16,341 us-gaap_RepaymentsOfSecuredDebt | 0 us-gaap_RepaymentsOfSecuredDebt | 0 us-gaap_RepaymentsOfSecuredDebt
Loss on extinguishment of debt, net | 412 us-gaap_GainsLossesOnExtinguishmentOfDebt | 412 us-gaap_GainsLossesOnExtinguishmentOfDebt | 14,921 us-gaap_GainsLossesOnExtinguishmentOfDebt | 1,179 us-gaap_GainsLossesOnExtinguishmentOfDebt
Fund I |  |  |  |
Investment in Real Estate Entities |  |  |  |
Number of extension options |  | 2 avb_DebtInstrumentNumberOfExtensions / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Period of extension (in years) |  | 1 year |  |
Number of apartment communities sold |  | 4 avb_NumberofApartmentCommunitiesSold / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Number of Institutional Investors |  | 9 avb_NumberOfInstitutionalInvestors / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Combined general partner and limited partner equity interest (as a percent) |  | 15.20%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Percentage of gain (loss) from sale of real estate recognized in income |  | 100.00%avb_PercentageofGainLossfromSaleofRealEstateRecognized / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Repayments of secured mortgages |  | 43,771 us-gaap_RepaymentsOfSecuredDebt / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Loss on extinguishment of debt, net |  | (328)us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Fund I | Weymouth Place |  |  |  |
Investment in Real Estate Entities |  |  |  |
Proceeds from sale of real estate |  | 25,750 us-gaap_ProceedsFromSaleOfRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_WeymouthPlaceMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Fund I | South Hills |  |  |  |
Investment in Real Estate Entities |  |  |  |
Proceeds from sale of real estate |  | 21,800 us-gaap_ProceedsFromSaleOfRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_SouthHillsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Fund I | Avalon at Cedar Place |  |  |  |
Investment in Real Estate Entities |  |  |  |
Proceeds from sale of real estate |  | 43,200 us-gaap_ProceedsFromSaleOfRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_AvalonAtCedarPlaceMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Fund I | Avalon Sunset Towers |  |  |  |
Investment in Real Estate Entities |  |  |  |
Proceeds from sale of real estate |  | 34,250 us-gaap_ProceedsFromSaleOfRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_AvalonSunsetTowersMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Fund I | The Springs |  |  |  |
Investment in Real Estate Entities |  |  |  |
Gain on sale of land |  | 16,656 us-gaap_GainLossOnSaleOfOtherAssets / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_TheSpringsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Joint Venture Partners | The Springs |  |  |  |
Investment in Real Estate Entities |  |  |  |
Gain on sale of communities |  | 14,132 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_TheSpringsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_JointVenturePartnersMember |  |
Noncontrolling interest, ownership percentage by noncontrolling owners |  | 84.80%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_TheSpringsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_JointVenturePartnersMember |  |
Fund II |  |  |  |
Investment in Real Estate Entities |  |  |  |
Number of apartment communities sold |  | 2 avb_NumberofApartmentCommunitiesSold / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Number of Institutional Investors |  | 6 avb_NumberOfInstitutionalInvestors / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Combined general partner and limited partner equity interest (as a percent) |  | 31.30%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Repayments of secured mortgages |  | 63,407 us-gaap_RepaymentsOfSecuredDebt / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Loss on extinguishment of debt, net |  | 1,364 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Real Estate Investments, Joint Ventures |  | 92,162 us-gaap_RealEstateInvestmentsJointVentures / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Number of loans secured by individual assets |  | 10 us-gaap_MortgageLoansOnRealEstateNumberOfLoans / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Debt outstanding |  | 358,811 us-gaap_DebtInstrumentCarryingAmount / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Maximum amount that will be paid for capital contributions made by partners (as a percent) |  | 10.00%us-gaap_GuaranteeObligationsLiquidationProceedsPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Maximum amount that will be paid for capital contributions made by partners |  | 8,910 us-gaap_GuaranteeObligationsMaximumExposure / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Fund II | Avalon Bellevue Park |  |  |  |
Investment in Real Estate Entities |  |  |  |
Proceeds from sale of real estate |  | 58,750 us-gaap_ProceedsFromSaleOfRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_AvalonBellevueParkMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Fund II | Avalon Fair Oaks |  |  |  |
Investment in Real Estate Entities |  |  |  |
Proceeds from sale of real estate |  | 108,200 us-gaap_ProceedsFromSaleOfRealEstate / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_AvalonFairOaksMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember |  |
Fund II |  |  |  |
Investment in Real Estate Entities |  |  |  |
Gain on sale of communities |  | 21,624 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember | 2,790 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember |
Eaves Plainsboro | Fund II |  |  |  |
Investment in Real Estate Entities |  |  |  |
Repayments of secured mortgages |  | 42,023 us-gaap_RepaymentsOfSecuredDebt / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundIILPMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_EavesPlainsboroMember |  |
Secured notes |  |  |  |
Investment in Real Estate Entities |  |  |  |
Repayments of secured mortgages | 5,914 us-gaap_RepaymentsOfSecuredDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  |
Secured notes | Notes payable maturing in 2014 | Fund I | The Springs |  |  |  |
Investment in Real Estate Entities |  |  |  |
Repayments of secured mortgages |  | $ 21,748 us-gaap_RepaymentsOfSecuredDebt / us-gaap_DebtInstrumentAxis = avb_NotesPayableMaturities2014Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_TheSpringsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |
Fixed rate (as a percent) |  | 6.06%us-gaap_LongTermDebtPercentageBearingFixedInterestRate / us-gaap_DebtInstrumentAxis = avb_NotesPayableMaturities2014Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = avb_TheSpringsMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = avb_AvalonBayValueAddedFundLPMember |  |

X
- Definition Length of the extension period for the date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (years, months, etc.). + References No definition available. + Details
Name: | avb_DebtInstrumentLengthOfExtensionPeriod
Namespace Prefix: | avb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of times which the maturity date of the unsecured credit facility can be extended. + References No definition available. + Details
Name: | avb_DebtInstrumentNumberOfExtensions
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Operating Apartment Communities Sold + References No definition available. + Details
Name: | avb_NumberofApartmentCommunitiesSold
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of institutional investors. + References No definition available. + Details
Name: | avb_NumberOfInstitutionalInvestors
Namespace Prefix: | avb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of Gain (Loss) from Sale of Real Estate Recognized + References No definition available. + Details
Name: | avb_PercentageofGainLossfromSaleofRealEstateRecognized
Namespace Prefix: | avb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of gain (loss) on sale or disposal of an equity method investment. + References No definition available. + Details
Name: | us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) on sale or disposal of other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Indicates, if estimable, (as a percentage) the approximate extent to which the proceeds from liquidation of any assets held either as collateral or by third parties would be expected to cover the maximum potential amount of future payments under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsLiquidationProceedsPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtPercentageBearingFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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 parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Indicates the number of mortgages under each classification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.3) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Paragraph 3 -Article 12 + Details
Name: | us-gaap_MortgageLoansOnRealEstateNumberOfLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash received for the sale of real estate that is not part of an investing activity during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The book value of investments in real estate joint ventures including direct and indirect investments. + References 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 + Details
Name: | us-gaap_RealEstateInvestmentsJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_RepaymentsOfSecuredDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=avb_AvalonBayValueAddedFundIILPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=avb_EavesPlainsboroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |