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Organization and Basis of Presentation (Details 2) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accounting Policies [Abstract]                      
Minimum distribution of adjusted taxable income for deducting dividends from federally taxable income (as a percent)                 90.00%avb_MinimumPercentageOfDistributionOfAdjustedTaxableIncomeForDeductingDividendsFromFederallyTaxableIncome    
Minimum distribution of REIT taxable income for federal income tax exemption (as a percent)                 100.00%avb_MinimumPercentageOfDistributionOfREITTaxableIncomeForFederalIncomeTaxExemption    
Income Taxes [Line Items]                      
Unrecognized tax benefits $ 0us-gaap_UnrecognizedTaxBenefits       $ 0us-gaap_UnrecognizedTaxBenefits       $ 0us-gaap_UnrecognizedTaxBenefits $ 0us-gaap_UnrecognizedTaxBenefits  
Excise and Sales Taxes                 0us-gaap_ExciseAndSalesTaxes 0us-gaap_ExciseAndSalesTaxes 0us-gaap_ExciseAndSalesTaxes
Excise Tax Refund 0avb_ExciseTaxRefund       0avb_ExciseTaxRefund       0avb_ExciseTaxRefund 0avb_ExciseTaxRefund 0avb_ExciseTaxRefund
Income tax expense                 9,368,000us-gaap_IncomeTaxExpenseBenefit 0us-gaap_IncomeTaxExpenseBenefit 0us-gaap_IncomeTaxExpenseBenefit
Reconciliation of Income from Book Basis to Tax Basis Adjustment                      
Net income attributable to common stockholders 142,642,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 241,100,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 158,086,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 141,739,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 252,212,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic (10,715,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 36,218,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 75,427,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 683,567,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 353,141,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 423,869,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
GAAP gain on sale of communities (in excess of) less than tax gain                 17,688,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisGainOnSaleOfCommunities 29,388,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisGainOnSaleOfCommunities 37,525,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisGainOnSaleOfCommunities
Depreciation/amortization timing differences on real estate                 42,195,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisDepreciationAndAmortization 180,293,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisDepreciationAndAmortization 9,572,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisDepreciationAndAmortization
Deductible acquisition costs                 (7,681,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisDeductibleAcquisitionCosts (26,427,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisDeductibleAcquisitionCosts 0avb_ReconciliationOfIncomeFromBookBasisToTaxBasisDeductibleAcquisitionCosts
Amortization of debt/mark to market interest                 (38,202,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisMarkToMarketInterest (31,965,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisMarkToMarketInterest 0avb_ReconciliationOfIncomeFromBookBasisToTaxBasisMarkToMarketInterest
Tax compensation expense less than (in excess of) GAAP                 (6,789,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisCompensationExpense 12,886,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisCompensationExpense (26,314,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisCompensationExpense
Casualty and impairment loss                 0avb_ReconciliationOfIncomeFromBookBasisToTaxBasisCasualtyAndImpairmentLoss 0avb_ReconciliationOfIncomeFromBookBasisToTaxBasisCasualtyAndImpairmentLoss 1,449,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisCasualtyAndImpairmentLoss
Other adjustments                 (39,726,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisOtherAdjustments 1,018,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisOtherAdjustments (9,034,000)avb_ReconciliationOfIncomeFromBookBasisToTaxBasisOtherAdjustments
Taxable net income                 651,052,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisNetIncomeLossTaxBasis 518,334,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisNetIncomeLossTaxBasis 437,067,000avb_ReconciliationOfIncomeFromBookBasisToTaxBasisNetIncomeLossTaxBasis
Tax components of common stock dividends declared                      
Ordinary income (as a percent)                 62.00%avb_CommonStockDividendsOrdinaryTaxableDistributionPercentage 42.00%avb_CommonStockDividendsOrdinaryTaxableDistributionPercentage 47.00%avb_CommonStockDividendsOrdinaryTaxableDistributionPercentage
15% capital gain (20% for 2013) (as a percent)                 29.00%avb_CommonStockDividendsLongTermCapitalGainPercentage 40.00%avb_CommonStockDividendsLongTermCapitalGainPercentage 33.00%avb_CommonStockDividendsLongTermCapitalGainPercentage
Capital gain tax rate (as a percent)                 20.00%avb_CapitalGainTaxRate 20.00%avb_CapitalGainTaxRate 15.00%avb_CapitalGainTaxRate
Unrecaptured 1250 gain (as a percent)                 9.00%avb_CommonStockDividendsUnrecapturedSection1250GainPercentage 18.00%avb_CommonStockDividendsUnrecapturedSection1250GainPercentage 20.00%avb_CommonStockDividendsUnrecapturedSection1250GainPercentage
Deferred Financing Costs                      
Accumulated amortization of deferred finance costs $ 24,444,000us-gaap_AccumulatedAmortizationDeferredFinanceCosts       $ 19,719,000us-gaap_AccumulatedAmortizationDeferredFinanceCosts       $ 24,444,000us-gaap_AccumulatedAmortizationDeferredFinanceCosts $ 19,719,000us-gaap_AccumulatedAmortizationDeferredFinanceCosts