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v2.4.1.9

Equity (Details) (USD $) | 0 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 09, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Aug. 31, 2012
Class of Stock [Line Items] |  |  |  |  |
Common stock, shares authorized |  | 280,000,000 us-gaap_CommonStockSharesAuthorized | 280,000,000 us-gaap_CommonStockSharesAuthorized |  |
Preferred stock, shares authorized |  | 50,000,000 us-gaap_PreferredStockSharesAuthorized | 50,000,000 us-gaap_PreferredStockSharesAuthorized |  |
Common stock shares issued in connection with stock options exercised |  | 500,197 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised |  |  |
Common stock shares issued through dividend reinvestment plan |  | 2,434 us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan | 2,002 us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan | 2,331 us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan |
Common stock shares issued in connection with stock grants |  | 115,163 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross | 123,977 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross | 96,592 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross |
Number of shares of stock grants withheld |  | 55,523 us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation | 48,310 us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation | 121,351 us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation |
Number of shares forfeited |  | 7,970 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited | 7,653 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited | 7,558 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited |
Common shares issued under Employee Stock Purchase Plan |  | 9,848 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans |  |  |
Proceeds from issuance of common stock |  | $ 346,134,000 us-gaap_ProceedsFromIssuanceOfCommonStock | $ 4,703,000 us-gaap_ProceedsFromIssuanceOfCommonStock | $ 2,430,190,000 us-gaap_ProceedsFromIssuanceOfCommonStock |
Market closing price (in dollars per share) | $ 155.83 us-gaap_SharePrice |  |  |  |
Option Indexed to Issuer's Equity, Shares | 4,500,000 us-gaap_ForwardContractIndexedToIssuersEquityShares |  |  |  |
Forward rate (in dollars per share) | $ 151.74 us-gaap_ForwardContractIndexedToIssuersEquityForwardRate |  |  |  |
CEP III |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common stock shares issued |  | 2,069,538 us-gaap_StockIssuedDuringPeriodSharesNewIssues / avb_EquityIssuanceProgramAxis = avb_ContinuousEquityProgramCEPIIIMember |  |  |
Maximum value of shares of common stock that can be sold |  |  |  |  | 750,000,000 avb_CommonStockValueAuthorized / avb_EquityIssuanceProgramAxis = avb_ContinuousEquityProgramCEPIIIMember
Period during which common stock can be sold (in months) |  | 36 months |  |  |
Percentage of compensation received by sales agent |  | 1.50%avb_SalesAgentCompensationPercentage / avb_EquityIssuanceProgramAxis = avb_ContinuousEquityProgramCEPIIIMember |  |  |
Value of additional shares authorized for issuance |  | 346,304,000 avb_CommonStockAuthorizedRemainingToBeIssued / avb_EquityIssuanceProgramAxis = avb_ContinuousEquityProgramCEPIIIMember |  |  |
Average sales price of shares issued (in dollars per share) |  | $ 144.95 avb_Avb_SharesIssuedAveragePricePerShare / avb_EquityIssuanceProgramAxis = avb_ContinuousEquityProgramCEPIIIMember |  |  |
Proceeds from issuance of common stock |  | $ 295,465,000 us-gaap_ProceedsFromIssuanceOfCommonStock / avb_EquityIssuanceProgramAxis = avb_ContinuousEquityProgramCEPIIIMember |  |  |

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- Definition The average price at which common shares were issued during the period. + References No definition available. + Details
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- Definition Value of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The maximum value of common stock which the entity is authorized to issue under the program. + References No definition available. + Details
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- Definition Represents the period during which common stock can be sold under the program. + References No definition available. + Details
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + 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 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879 + Details
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- Definition The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + 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 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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- Definition For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer. + References No definition available. + Details
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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References No definition available. + Details
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