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Archstone Acquisition (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended | 0 Months Ended | 10 Months Ended
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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 | Feb. 27, 2013 | Dec. 31, 2013
Business Acquisition Additional Disclosure |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related expenses recognized |  |  |  |  |  |  |  |  | $ (7,681)us-gaap_BusinessCombinationAcquisitionRelatedCosts | $ 44,052 us-gaap_BusinessCombinationAcquisitionRelatedCosts | $ 9,593 us-gaap_BusinessCombinationAcquisitionRelatedCosts |  |
Equity in income (loss) of unconsolidated entities |  |  |  |  |  |  |  |  | 148,766 us-gaap_IncomeLossFromEquityMethodInvestments | (11,154)us-gaap_IncomeLossFromEquityMethodInvestments | 20,914 us-gaap_IncomeLossFromEquityMethodInvestments |  |
Information for acquisition that is included in condensed consolidated statement of operations comprehensive income from the acquisition date |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 440,656 us-gaap_Revenues | 430,525 us-gaap_Revenues | 413,806 us-gaap_Revenues | 400,075 us-gaap_Revenues | 394,169 us-gaap_Revenues | 389,189 us-gaap_Revenues | 378,207 us-gaap_Revenues | 301,356 us-gaap_Revenues | 1,685,061 us-gaap_Revenues | 1,462,921 us-gaap_Revenues | 1,000,627 us-gaap_Revenues |  |
Net income attributable to common stockholders | 142,642 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 241,100 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 158,086 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 141,739 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 252,212 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (10,715)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 36,218 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 75,427 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 683,567 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 353,141 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 423,869 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |
Supplemental consolidated pro forma information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 1,534,868 us-gaap_BusinessAcquisitionsProFormaRevenue | 1,411,504 us-gaap_BusinessAcquisitionsProFormaRevenue |  |
Income from continuing operations |  |  |  |  |  |  |  |  |  | 348,160 us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax | 158,738 us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax |  |
Earnings per common share - diluted (from continuing operations) (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 2.67 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted | $ 1.22 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted |  |
Archstone |  |  |  |  |  |  |  |  |  |  |  |  |
Archstone acquisition |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of assets and liabilities acquired |  |  |  |  |  |  |  |  |  |  |  | 40.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Land and land improvements |  |  |  |  |  |  |  |  |  |  |  | 1,745,520 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Buildings and improvements |  |  |  |  |  |  |  |  |  |  |  | 3,711,853 avb_BusinessAcquisitionPurchasePriceAllocationBuildingsAndImprovements / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
FF&E |  |  |  |  |  |  |  |  |  |  |  | 52,290 avb_BusinessAcquisitionPurchasePriceAllocationFurnitureFixturesAndEquipments / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Construction-in-progress, including land and land held for development (1) |  |  |  |  |  |  |  |  |  |  |  | 401,747 avb_BusinessAcquisitionPurchasePriceAllocationConstructionInProgress / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
In-place lease intangibles |  |  |  |  |  |  |  |  |  |  |  | 182,467 avb_BusinessAcquisitionPurchasePriceAllocationInPlaceLeaseIntangibles / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Other assets |  |  |  |  |  |  |  |  |  |  |  | 109,717 avb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsOther / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Total consolidated assets |  |  |  |  |  |  |  |  |  |  |  | 6,203,594 avb_BusinessAcquisitionPurchasePriceAllocationConsolidatedInterestInJointVentures / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Interest in unconsolidated real estate entities |  |  |  |  |  |  |  |  |  |  |  | 276,954 avb_BusinessAcquisitionPurchasePriceAllocationUnconsolidatedInterestInJointVentures / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Total assets |  |  |  |  |  |  |  |  |  |  |  | 6,480,548 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Fair value of assumed mortgage notes payable |  |  |  |  |  |  |  |  |  |  |  | 3,732,980 avb_BusinessAcquisitionPurchasePriceAllocationMortgageNotesPayable / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Liability for preferred obligations |  |  |  |  |  |  |  |  |  |  |  | 67,493 avb_BusinessAcquisitionPurchasePriceAllocationPreferredObligationsLiability / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Other liabilities |  |  |  |  |  |  |  |  |  |  |  | 31,984 avb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Noncontrolling interest |  |  |  |  |  |  |  |  |  |  |  | 13,262 us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Net assets acquired |  |  |  |  |  |  |  |  |  |  |  | 2,634,829 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Common shares issued |  |  |  |  |  |  |  |  |  |  |  | 1,875,210 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Cash consideration |  |  |  |  |  |  |  |  |  |  |  | 759,619 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Business Acquisition Additional Disclosure |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related expenses recognized |  |  |  |  |  |  |  |  |  | 83,594 us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  |  |
Equity in income (loss) of unconsolidated entities |  |  |  |  |  |  |  |  |  | 39,543 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  |  |
Consideration |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  |  |  |  |  |  |  |  |  | 14,889,706 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  | 14,889,706 us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Common shares issued |  |  |  |  |  |  |  |  |  |  |  | 1,875,210 us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Cash consideration |  |  |  |  |  |  |  |  |  |  |  | 759,619 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Fair value of indebtedness assumed |  |  |  |  |  |  |  |  |  |  |  | 3,732,980 us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Principal amount of consolidated indebtedness |  |  |  |  | 3,512,202 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  |  |  |  | 3,512,202 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  | 3,512,202 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember | 3,512,202 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember
Debt fair value exceeds the principal face value |  |  |  |  |  |  |  |  |  |  |  | 220,777 avb_BusinessAcquisitionPurchasePriceAllocationFairValueOfDebtAssumedExceedsPrincipalFaceAmountOfDebt / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Debt fair value exceeds the principal face value relating to debt repaid |  |  |  |  |  |  |  |  |  |  |  | 70,479 avb_BusinessAcquisitionPurchasePriceAllocationFairValueOfDebtAssumedExceedsPrincipalFaceAmountOfDebtRelatingToDebtRepaid / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |
Redemption value of preferred equity |  |  |  |  | 67,500 avb_BusinessAcquisitionPurchasePriceAllocationRedemptionValueOfPreferredEquityUnits / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  |  |  |  | 67,500 avb_BusinessAcquisitionPurchasePriceAllocationRedemptionValueOfPreferredEquityUnits / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember |  | 67,500 avb_BusinessAcquisitionPurchasePriceAllocationRedemptionValueOfPreferredEquityUnits / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember | 67,500 avb_BusinessAcquisitionPurchasePriceAllocationRedemptionValueOfPreferredEquityUnits / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember
Information for acquisition that is included in condensed consolidated statement of operations comprehensive income from the acquisition date |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  | 353,427 us-gaap_Revenues / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember
Net income attributable to common stockholders |  |  |  |  |  |  |  |  |  |  |  |  | $ (105,589)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember
Archstone | Equity |  |  |  |  |  |  |  |  |  |  |  |  |
Archstone acquisition |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of assets and liabilities acquired |  |  |  |  |  |  |  |  |  |  |  | 60.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = avb_ArchstoneEnterpriseLPMember / us-gaap_CounterpartyNameAxis = avb_EquityResidentialAndItsOperatingPartnershipAndERPOperatingLimitedPartnershipMember |

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