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Notes Payable, Unsecured Notes and Credit Facility (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Notes Payable, Unsecured Notes and Credit Facility |  |
Total notes payable and unsecured notes | $ 6,448,138,000 us-gaap_NotesPayable | $ 6,019,571,000 us-gaap_NotesPayable
Variable rate unsecured credit facility | 0 us-gaap_LineOfCredit | 0 us-gaap_LineOfCredit
Total mortgage notes payable, unsecured notes and Credit Facility | 6,448,138,000 us-gaap_LongTermDebt | 6,019,571,000 us-gaap_LongTermDebt
Unsecured notes |  |
Notes Payable, Unsecured Notes and Credit Facility |  |
Fixed rate notes | 2,750,000,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember | 2,600,000,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Total notes payable and unsecured notes | 3,000,000,000 us-gaap_NotesPayable / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember |
Amount of debt discount | 6,735,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember | 5,291,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Term loan |  |
Notes Payable, Unsecured Notes and Credit Facility |  |
Variable rate notes | 250,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_LongtermDebtTypeAxis = avb_VariableRateUnsecuredTermLoanMember | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_LongtermDebtTypeAxis = avb_VariableRateUnsecuredTermLoanMember
Mortgage notes payable |  |
Notes Payable, Unsecured Notes and Credit Facility |  |
Fixed rate notes | 2,400,677,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember | 2,407,962,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember
Variable rate notes | 1,047,461,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember | 1,011,609,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember
Total notes payable and unsecured notes | 3,334,039,000 us-gaap_NotesPayable / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |
Amount of debt premium | 84,449,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember | 120,071,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember
Variable rate unsecured credit facility |  |
Notes Payable, Unsecured Notes and Credit Facility |  |
Variable rate unsecured credit facility | $ 0 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember | $ 0 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember

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- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 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 FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition 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 No definition available. + Details
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- Definition 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 rate subject to change from time to time. + References No definition available. + Details
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 + Details
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