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Investments in Real Estate Entities (Details 3) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Assets: |  |  |
Real estate, net | $ 1,617,627 avb_EquityMethodInvestmentSummarizedFinancialInformationRealEstateNet | $ 1,905,005 avb_EquityMethodInvestmentSummarizedFinancialInformationRealEstateNet |
Other assets | 72,290 avb_EquityMethodInvestmentSummarizedFinancialInformationAssetsOtherAssets | 164,183 avb_EquityMethodInvestmentSummarizedFinancialInformationAssetsOtherAssets |
Total assets | 1,689,917 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets | 2,069,188 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets |
Liabilities and partners' capital: |  |  |
Mortgage notes payable and credit facility | 980,128 avb_EquityMethodInvestmentSummarizedFinancialInformationMortgageNotesPayableAndCreditFacility | 1,251,067 avb_EquityMethodInvestmentSummarizedFinancialInformationMortgageNotesPayableAndCreditFacility |
Other liabilities | 24,884 avb_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesOtherLiabilities | 32,257 avb_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesOtherLiabilities |
Partners' capital | 684,905 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital | 785,864 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital |
Total liabilities and partners' capital | 1,689,917 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity | 2,069,188 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Rental and other income | 198,939 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 212,994 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 172,076 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
Operating and other expenses | (80,301)avb_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOtherExpenses | (86,434)avb_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOtherExpenses | (73,955)avb_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOtherExpenses
Gain on sale of real estate | 333,221 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 96,152 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 106,195 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Interest expense, net | (61,458)avb_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense | (61,404)avb_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense | (53,904)avb_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense
Depreciation expense | (52,116)avb_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization | (61,002)avb_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization | (47,748)avb_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization
Net income | 338,285 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | 100,306 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | 102,664 us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 148,766 us-gaap_IncomeLossFromEquityMethodInvestments | (11,154)us-gaap_IncomeLossFromEquityMethodInvestments | 20,914 us-gaap_IncomeLossFromEquityMethodInvestments
Business acquisition transaction costs expensed | (7,681)us-gaap_BusinessCombinationAcquisitionRelatedCosts | 44,052 us-gaap_BusinessCombinationAcquisitionRelatedCosts | 9,593 us-gaap_BusinessCombinationAcquisitionRelatedCosts
Land held for development | 180,516 us-gaap_LandAvailableForDevelopment | 300,364 us-gaap_LandAvailableForDevelopment |
Fund I |  |  |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Gain on sale of real estate | 3,317 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 475 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember | 10,924 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember | 7,041 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember
Fund II |  |  |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Gain on sale of real estate | 21,624 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember | 2,790 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 24,808 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember | 6,206 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember | 2,130 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundIILPMember
US Fund |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 342 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_USFundMember | (661)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_USFundMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_USFundMember
ACJV |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 1,579 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ACJVMember | 2,569 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ACJVMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ACJVMember
CVP I, LLC |  |  |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Gain on sale of real estate | 50,478 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 113,127 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember | 5,783 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember | 5,394 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember
Equity in income of unconsolidated entities relating to the Company's recognition of promoted interest | 61,218 avb_IncomeLossFromEquityMethodInvestmentsDueToRecognitionOfPromotedInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember | 5,527 avb_IncomeLossFromEquityMethodInvestmentsDueToRecognitionOfPromotedInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember | 5,260 avb_IncomeLossFromEquityMethodInvestmentsDueToRecognitionOfPromotedInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_CVPILLCMember
MVPI LLC |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 1,651 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_MVPILLCMember | 1,137 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_MVPILLCMember | 493 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_MVPILLCMember
Equity in income of unconsolidated entities relating to the Company's recognition of promoted interest | 930 avb_IncomeLossFromEquityMethodInvestmentsDueToRecognitionOfPromotedInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_MVPILLCMember | 516 avb_IncomeLossFromEquityMethodInvestmentsDueToRecognitionOfPromotedInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_MVPILLCMember |
Brandywine |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 828 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_BrandywineMember | 661 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_BrandywineMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_BrandywineMember
Arna Valley View LP |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 2,406 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ArnaValleyViewLPMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ArnaValleyViewLPMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ArnaValleyViewLPMember
Residual JV |  |  |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Gain on sale of real estate | 8,510 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ResidualJointVentureMember |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 3,547 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ResidualJointVentureMember | (38,332)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ResidualJointVentureMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_ResidualJointVentureMember
Avalon Del Rey LLC |  |  |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Gain on sale of real estate |  |  | 45 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonDelReyApartmentsLLCMember
Costs in excess of equity in underlying net assets of the respective investments | 3,880 us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonDelReyApartmentsLLCMember | 5,439 us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonDelReyApartmentsLLCMember |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 0 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonDelReyApartmentsLLCMember | 181 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonDelReyApartmentsLLCMember | 4,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonDelReyApartmentsLLCMember
Juanita Village |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Equity in income (loss) of unconsolidated entities | 3 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_JuanitaVillageMember | 378 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_JuanitaVillageMember | 1,856 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_JuanitaVillageMember
Joint Venture |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage | 70.00%us-gaap_VariableInterestEntityOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_JointVentureMember |  |
Variable Interest Entity, Ownership Interest by Noncontrolling Interest | 30.00%avb_VariableInterestEntityOwnershipInterestbyNoncontrollingInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_JointVentureMember |  |
Land held for development | 11,161 us-gaap_LandAvailableForDevelopment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_JointVentureMember |  |
Avalon Mission Oaks |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Number of apartment homes acquired | 160 avb_NumberOfApartmentHomesAcquired / us-gaap_BusinessAcquisitionAxis = avb_AvalonMissionOaksMember |  |
Purchase price | 47,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = avb_AvalonMissionOaksMember |  |
Prepaid Expenses and Other Assets |  |  |
Summary of the Company's equity in income of unconsolidated entities |  |  |
Due from Related Parties | 5,354 us-gaap_DueFromRelatedParties / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember |  |
Unconsolidated Properties [Member] | Fund I |  |  |
Combined summary of the operating results of the accounted for using the equity method |  |  |
Gain on sale of real estate | $ 944 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_RealEstatePropertiesAxis = us-gaap_UnconsolidatedPropertiesMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember | $ 11,484 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_RealEstatePropertiesAxis = us-gaap_UnconsolidatedPropertiesMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember | $ 7,971 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / us-gaap_RealEstatePropertiesAxis = us-gaap_UnconsolidatedPropertiesMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = avb_AvalonBayValueAddedFundLPMember

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- Definition The amount of mortgage notes payable and credit facility reported by an equity method investment of the entity. + References No definition available. + Details
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- Definition Represents the net amount of real estate reported by an equity method investment of the entity. + References No definition available. + Details
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