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Loss Contingency, Number of Other Defendants

No definition available.

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Number of commercial properties owned.

No definition available.

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Number of Finance Leases for Parking Garages Adjacent to Communities

No definition available.

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Number of Office Leases

No definition available.

Name:	avb_NumberOfOfficeLeases
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Balance Type:	na
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Represents the sum of the age of an employee at Retirement plus years of employment with the entity, which is considered as a criterion for Retirement.

No definition available.

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Represents the compensation (base salary plus annual cash bonus) multiplier considered for executives terminated.

No definition available.

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Represents the time period that an employee will have to exercise any options held upon termination without cause or retirement.

No definition available.

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Represents the minimum period of written notice to be provided by an employee for communicating his intention to retire.

No definition available.

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Represents the age of an employee that is considered for Retirement, which results in vesting of the equity-based payment award.

No definition available.

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Represents the period following a sale within which if an employee, not covered by a severance agreement, terminates his employment, receives a lump sum payment.

No definition available.

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Data Type:	xbrli:durationItemType
Balance Type:	na
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Present value of lessee's discounted obligation for lease payments from finance lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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Indicates line item in statement of financial position that includes finance lease liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-2

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Amount, after accumulated amortization, of right-of-use asset from finance lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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Indicates line item in statement of financial position that includes finance lease right-of-use asset.

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The number of real estate properties owned as of the balance sheet date.

No definition available.

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Amount of operating lease expense. Excludes sublease income.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-4

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Present value of lessee's discounted obligation for lease payments from operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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Indicates line item in statement of financial position that includes operating lease liability.

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Amount of lessee's right to use underlying asset under operating lease.

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Period Type:	instant

Indicates line item in statement of financial position that includes operating lease right-of-use asset.

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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
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Period Type:	instant

Cash received for the settlement of litigation during the current period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-25

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Data Type:	xbrli:durationItemType
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Period Type:	duration

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=avb_PropertiesOnLandSubjectToLandLeasesMember
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Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=avb_AssetsHeldunderOperatingLeasesMember
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Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=avb_AssetsHeldunderFinanceLeasesMember
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Data Type:	na
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Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=avb_AvalonatAssemblyRowMember
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Data Type:	na
Balance Type:
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Name:	us-gaap_AwardTypeAxis=us-gaap_StockCompensationPlanMember
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Name:	srt_RangeAxis=srt_MinimumMember
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Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_AwardTypeAxis=avb_OfficerSeveranceProgramMember
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