$AVB
AVALONBAY COMMUNITIES INC Stock $avb

$avb Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000091591220000004 Filed on February 21, 2020

Income Statement

Concept	2019 Q4	2019	2018 Q4
Revenue	$593.6M	$2.325B	$578.5M
YoY Change	2.6%	1.75%	4.18%
Cost Of Revenue	$190.4M	$768.1M	$192.7M
YoY Change	-1.19%	-0.32%	6.0%
Gross Profit	$403.2M	$1.557B	$385.8M
YoY Change	4.51%	2.81%	3.29%
Gross Profit Margin	67.93%	66.96%	66.69%
Selling, General & Admin	$12.60M	$58.00M	$14.40M
YoY Change	-12.5%	2.84%	21.01%
% of Gross Profit	3.13%	3.73%	3.73%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$171.4M	$661.6M	$158.9M
YoY Change	7.87%	4.81%	1.15%
% of Gross Profit	42.51%	42.5%	41.19%
Operating Expenses	$184.0M	$1.697B	$173.3M
YoY Change	6.17%	-0.19%	2.54%
Operating Profit	$219.2M	$1.552B	$212.5M
YoY Change	3.15%	4.5%	3.91%
Interest Expense	-$46.30M	$203.6M	-$52.50M
YoY Change	-11.81%	-7.87%	0.77%
% of Operating Profit	-21.12%	13.12%	-24.71%
Other Income/Expense, Net		-$4.991M
YoY Change
Pretax Income	$169.5M	$799.1M	$385.4M
YoY Change	-56.02%	-17.96%	62.27%
Income Tax	$1.800M	$13.00M	-$200.0K
% Of Pretax Income	1.06%	1.63%	-0.05%
Net Earnings	$167.7M	$786.1M	$385.6M
YoY Change	-56.52%	-19.33%	62.38%
Net Earnings / Revenue	28.25%	33.82%	66.66%
Basic Earnings Per Share	$1.20	$5.64	$2.79
Diluted Earnings Per Share	$1.20	$5.63	$2.79
COMMON SHARES
Basic Shares Outstanding	139.7M shares	139.1M shares	138.2M shares
Diluted Shares Outstanding		139.6M shares

Balance Sheet

Concept	2019 Q4	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$40.00M	$40.00M	$92.00M
YoY Change	-56.52%	-56.52%	37.31%
Cash & Equivalents	$39.69M	$40.00M	$91.66M
Short-Term Investments
Other Short-Term Assets	$165.0M	$165.0M	$135.0M
YoY Change	22.22%	22.22%	-46.64%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$205.0M	$205.0M	$227.0M
YoY Change	-9.69%	-9.69%	-29.06%
LONG-TERM ASSETS
Property, Plant & Equipment	$18.56B	$18.56B	$17.73B
YoY Change	4.66%	4.66%	0.07%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$166.0M	$166.0M	$217.0M
YoY Change	-23.5%	-23.5%	33.13%
Other Assets	$158.0M	$158.0M	$174.0M
YoY Change	-9.2%	-9.2%	-3.87%
Total Long-Term Assets	$18.92B	$18.92B	$18.15B
YoY Change	4.2%	4.2%	0.32%
TOTAL ASSETS
Total Short-Term Assets	$205.0M	$205.0M	$227.0M
Total Long-Term Assets	$18.92B	$18.92B	$18.15B
Total Assets	$19.12B	$19.12B	$18.38B
YoY Change	4.03%	4.03%	-0.19%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$92.00M	$92.00M	$97.00M
YoY Change	-5.15%	-5.15%	14.12%
Accrued Expenses	$441.0M	$441.0M	$344.0M
YoY Change	28.2%	28.2%	-1.99%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$810.0M	$810.0M	$704.0M
YoY Change	15.06%	15.06%	1.88%
LONG-TERM LIABILITIES
Long-Term Debt	$7.316B	$7.316B	$7.040B
YoY Change	3.92%	3.92%	-3.94%
Other Long-Term Liabilities	$0.00	$0.00	$0.00
YoY Change
Total Long-Term Liabilities	$7.316B	$7.316B	$7.040B
YoY Change	3.92%	3.92%	-3.94%
TOTAL LIABILITIES
Total Short-Term Liabilities	$810.0M	$810.0M	$704.0M
Total Long-Term Liabilities	$7.316B	$7.316B	$7.040B
Total Liabilities	$8.128B	$8.132B	$7.744B
YoY Change	4.95%	4.96%	-3.45%
SHAREHOLDERS EQUITY
Retained Earnings	$282.9M		$350.8M
YoY Change	-19.35%		85.98%
Common Stock	$1.406M		$1.385M
YoY Change	1.52%		0.29%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$10.99B	$10.99B	$10.63B
YoY Change
Total Liabilities & Shareholders Equity	$19.12B	$19.12B	$18.38B
YoY Change	4.03%	4.03%	-0.19%

Cashflow Statement

Concept	2019 Q4	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$167.7M	$786.1M	$385.6M
YoY Change	-56.52%	-19.33%	62.38%
Depreciation, Depletion And Amortization	$171.4M	$661.6M	$158.9M
YoY Change	7.87%	4.81%	1.15%
Cash From Operating Activities	$306.9M	$1.322B	$320.5M
YoY Change	-4.24%	1.59%	-0.62%
INVESTING ACTIVITIES
Capital Expenditures	-$438.0M	-$1.613B	-$554.8M
YoY Change	-21.05%	3.06%	1462.82%
Acquisitions
YoY Change
Other Investing Activities	$1.400M	$419.6M	$453.6M
YoY Change	-99.69%	-56.69%	-248.67%
Cash From Investing Activities	-$436.7M	-$1.194B	-$101.2M
YoY Change	331.52%	100.1%	-70.29%
FINANCING ACTIVITIES
Cash Dividend Paid		$839.6M
YoY Change		4.27%
Common Stock Issuance & Retirement, Net		-$409.7M
YoY Change		684.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-77.40M	-$218.2M	-283.1M
YoY Change	-72.66%	-68.31%	-9536.67%
NET CHANGE
Cash From Operating Activities	306.9M	$1.322B	320.5M
Cash From Investing Activities	-436.7M	-$1.194B	-101.2M
Cash From Financing Activities	-77.40M	-$218.2M	-283.1M
Net Change In Cash	-207.2M	-$90.25M	-63.80M
YoY Change	224.76%	-665.55%	322.52%
FREE CASH FLOW
Cash From Operating Activities	$306.9M	$1.322B	$320.5M
Capital Expenditures	-$438.0M	-$1.613B	-$554.8M
Free Cash Flow	$744.9M	$2.935B	$875.3M
YoY Change	-14.9%	2.39%	144.5%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019Q4	avb	Excise Tax Refund ExciseTaxRefund	0	USD
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	avb	Capital Gain Tax Rate CapitalGainTaxRate	0.2
CY2018	avb	Capital Gain Tax Rate CapitalGainTaxRate	0.2
CY2019	avb	Capital Gain Tax Rate CapitalGainTaxRate	0.2
CY2017Q4	avb	Excise Tax Refund ExciseTaxRefund	0	USD
CY2018Q4	avb	Excise Tax Refund ExciseTaxRefund	0	USD
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000915912
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.68
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.88
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	6.08
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	280000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	139660299	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	140643962	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	139660299	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	140643962	shares
CY2017	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	0	USD
CY2018	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	0	USD
CY2019	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	0	USD
CY2017	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2018Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Entity File Number EntityFileNumber	1-12672
CY2019	dei	Entity Registrant Name EntityRegistrantName	AVALONBAY COMMUNITIES, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0404318
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	Ballston Tower
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	671 N. Glebe Rd, Suite 800
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Arlington
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	VA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	22203
CY2019	dei	City Area Code CityAreaCode	703
CY2019	dei	Local Phone Number LocalPhoneNumber	329-6300
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2019	dei	Trading Symbol TradingSymbol	AVB
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	28279444401	USD
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CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	439000	USD
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	345000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	141000	USD
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-10907000	USD
CY2019	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	3812000	USD
CY2018	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	1044000	USD
CY2017	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	0	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	799106000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	974015000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	876801000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13003000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-160000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	786103000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	974175000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	876660000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	129000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-350000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-261000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	785974000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	974525000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	876921000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-11930000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	5132000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-13979000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6571000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6143000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-7070000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	780615000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	985800000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	870012000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.64
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.05
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.36
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.63
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.05
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.35
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10171416000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	876921000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-13979000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-7070000	USD
CY2017	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	2026000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	783912000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	100304000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	28200000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10388046000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	974525000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	5132000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6143000	USD
CY2018	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	223000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	813722000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	40554000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	31705000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10632606000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	785974000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-11930000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6571000	USD
CY2019	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-373000	USD
CY2019	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	649000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	851287000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	393118000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	34870000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10990198000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	786103000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	974175000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	876660000	USD
CY2019	us-gaap	Depreciation Depreciation	661578000	USD
CY2018	us-gaap	Depreciation Depreciation	631196000	USD
CY2017	us-gaap	Depreciation Depreciation	584150000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7346000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7939000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	7657000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1591000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1701000	USD
CY2017	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-5915000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-602000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-17492000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-25472000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	25621000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	20280000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	17920000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-12278000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-6583000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	19798000	USD
CY2019	avb	Casualty Gain And Impairment Loss Net Operating Activities CasualtyGainAndImpairmentLossNetOperatingActivities	0	USD
CY2018	avb	Casualty Gain And Impairment Loss Net Operating Activities CasualtyGainAndImpairmentLossNetOperatingActivities	826000	USD
CY2017	avb	Casualty Gain And Impairment Loss Net Operating Activities CasualtyGainAndImpairmentLossNetOperatingActivities	8568000	USD
CY2019	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	2943000	USD
CY2018	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	501000	USD
CY2017	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	388000	USD
CY2019	us-gaap	Derivative Instruments Loss Reclassified From Accumulated Oci Into Income Effective Portion DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion	6571000	USD
CY2018	us-gaap	Derivative Instruments Loss Reclassified From Accumulated Oci Into Income Effective Portion DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion	6143000	USD
CY2017	us-gaap	Derivative Instruments Loss Reclassified From Accumulated Oci Into Income Effective Portion DerivativeInstrumentsLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortion	7070000	USD
CY2019	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	172332000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	385976000	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	281745000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	19118000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-12583000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-9382000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	8621000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	7668000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	26448000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1321804000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1301111000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1256257000	USD
CY2019	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	1052011000	USD
CY2018	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	1139954000	USD
CY2017	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	979947000	USD
CY2019	us-gaap	Payments To Acquire Other Real Estate PaymentsToAcquireOtherRealEstate	420517000	USD
CY2018	us-gaap	Payments To Acquire Other Real Estate PaymentsToAcquireOtherRealEstate	338620000	USD
CY2017	us-gaap	Payments To Acquire Other Real Estate PaymentsToAcquireOtherRealEstate	462317000	USD
CY2019	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	135626000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	83607000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	65181000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	5266000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3325000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	8809000	USD
CY2019	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	-4848000	USD
CY2018	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	11606000	USD
CY2017	us-gaap	Increase Decrease In Construction Payables IncreaseDecreaseInConstructionPayables	-15621000	USD
CY2019	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	422041000	USD
CY2018	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	883313000	USD
CY2017	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	503039000	USD
CY2019	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2018	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2017	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	16233000	USD
CY2019	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	692000	USD
CY2018	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	3699000	USD
CY2017	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	17590000	USD
CY2019	us-gaap	Proceeds From Sale And Collection Of Notes Receivable ProceedsFromSaleAndCollectionOfNotesReceivable	2779000	USD
CY2018	us-gaap	Proceeds From Sale And Collection Of Notes Receivable ProceedsFromSaleAndCollectionOfNotesReceivable	53136000	USD
CY2017	us-gaap	Proceeds From Sale And Collection Of Notes Receivable ProceedsFromSaleAndCollectionOfNotesReceivable	0	USD
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	10454000	USD
CY2018	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	35516000	USD
CY2017	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	89305000	USD
CY2019	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	10183000	USD
CY2018	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	11017000	USD
CY2017	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	24493000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1193869000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-596651000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-965381000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	409725000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	52261000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	111093000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	839646000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	805239000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	772657000	USD
CY2019	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	30250000	USD
CY2018	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	295939000	USD
CY2017	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	206800000	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	227570000	USD
CY2018	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	255452000	USD
CY2017	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	1313025000	USD
CY2019	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	449804000	USD
CY2018	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	299442000	USD
CY2017	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	1696826000	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2018	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	258579000	USD
CY2017	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	300000000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	10909000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	16258000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	17552000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1070000	USD
CY2017	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	18951000	USD
CY2019	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	12309000	USD
CY2018	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-12598000	USD
CY2017	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-391000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	456000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	16101000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10556000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10450000	USD
CY2019	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	46000	USD
CY2018	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	44000	USD
CY2017	us-gaap	Payments Of Capital Distribution PaymentsOfCapitalDistribution	42000	USD
CY2019	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	0	USD
CY2018	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	0	USD
CY2017	us-gaap	Proceeds From Distributions Received From Real Estate Partnerships ProceedsFromDistributionsReceivedFromRealEstatePartnerships	1038000	USD
CY2019	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	439000	USD
CY2018	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	424000	USD
CY2017	us-gaap	Payments For Proceeds From Real Estate Partnership Investment Net PaymentsForProceedsFromRealEstatePartnershipInvestmentNet	418000	USD
CY2019	avb	Payment For Redemption Of Preferred Interest Obligation PaymentForRedemptionOfPreferredInterestObligation	1400000	USD
CY2018	avb	Payment For Redemption Of Preferred Interest Obligation PaymentForRedemptionOfPreferredInterestObligation	1120000	USD
CY2017	avb	Payment For Redemption Of Preferred Interest Obligation PaymentForRedemptionOfPreferredInterestObligation	2000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-218185000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-688502000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-418947000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-90250000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	15958000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-128071000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	217864000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	201906000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	329977000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	127614000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	217864000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	201906000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	187570000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	201659000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	207842000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	39687000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	91659000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	67088000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	87927000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	126205000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	134818000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	127614000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	217864000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	201906000	USD
CY2019	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	2069	shares
CY2019	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	418000	USD
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	84710	shares
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	16101000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation Forfeited StockIssuedDuringPeriodValueShareBasedCompensationForfeited	399000	USD
CY2019Q4	avb	Dividends Declared But Not Yet Paid DividendsDeclaredButNotYetPaid	214832000	USD
CY2019	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	-6379000	USD
CY2019	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	388000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6571000	USD
CY2018	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	2272	shares
CY2018	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	387000	USD
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	68565	shares
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	10556000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation Forfeited StockIssuedDuringPeriodValueShareBasedCompensationForfeited	717000	USD
CY2018Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	204191000	USD
CY2018	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	6366000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6143000	USD
CY2017	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	3058	shares
CY2017	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	558000	USD
CY2017	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	60319	shares
CY2017	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	10542000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation Forfeited StockIssuedDuringPeriodValueShareBasedCompensationForfeited	588000	USD
CY2017Q4	avb	Dividends Declared But Not Yet Paid DividendsDeclaredButNotYetPaid	196094000	USD
CY2017	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	12114000	USD
CY2017	us-gaap	Increase Decrease In Derivative Liabilities IncreaseDecreaseInDerivativeLiabilities	1171000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-7070000	USD
CY2019Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	275	community
CY2019Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	79886	home
CY2019Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	11	state
CY2019Q4	avb	Number Of Communities With Apartments Under Reconstruction NumberOfCommunitiesWithApartmentsUnderReconstruction	2	community
CY2019Q4	avb	Number Of Apartment Homes Under Reconstruction NumberOfApartmentHomesUnderReconstruction	665	home
CY2019Q4	avb	Number Of Owned Communities Under Construction NumberOfOwnedCommunitiesUnderConstruction	22	community
CY2019Q4	avb	Expected Aggregate Number Of Apartment Homes To Be Constructed ExpectedAggregateNumberOfApartmentHomesToBeConstructed	6960	home
CY2019Q4	avb	Additional Numberof Communities Expected To Be Developed AdditionalNumberofCommunitiesExpectedToBeDeveloped	27	community
CY2019Q4	avb	Estimated Number Of Apartment Homes In Communities Expected To Be Developed EstimatedNumberOfApartmentHomesInCommunitiesExpectedToBeDeveloped	9587	home
CY2019	avb	Minimum Percentage Of Distribution Of Adjusted Taxable Income For Deducting Dividends From Federally Taxable Income MinimumPercentageOfDistributionOfAdjustedTaxableIncomeForDeductingDividendsFromFederallyTaxableIncome	0.90
CY2019	avb	Minimum Percentage Of Distribution Of Reit Taxable Income For Federal Income Tax Exemption MinimumPercentageOfDistributionOfREITTaxableIncomeForFederalIncomeTaxExemption	1
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13003000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-160000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	141000	USD
CY2019	avb	Number Of Communities Sold With Deferred Tax Obligations NumberOfCommunitiesSoldWithDeferredTaxObligations	2	community
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	785974000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	974525000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	876921000	USD
CY2019	avb	Reconciliation Of Income From Book Basis To Tax Basis Gain On Sale Of Communities ReconciliationOfIncomeFromBookBasisToTaxBasisGainOnSaleOfCommunities	108962000	USD
CY2018	avb	Reconciliation Of Income From Book Basis To Tax Basis Gain On Sale Of Communities ReconciliationOfIncomeFromBookBasisToTaxBasisGainOnSaleOfCommunities	192722000	USD
CY2017	avb	Reconciliation Of Income From Book Basis To Tax Basis Gain On Sale Of Communities ReconciliationOfIncomeFromBookBasisToTaxBasisGainOnSaleOfCommunities	86661000	USD
CY2019	avb	Reconciliation Of Income From Book Basis To Tax Basis Depreciation And Amortization ReconciliationOfIncomeFromBookBasisToTaxBasisDepreciationAndAmortization	-5619000	USD
CY2018	avb	Reconciliation Of Income From Book Basis To Tax Basis Depreciation And Amortization ReconciliationOfIncomeFromBookBasisToTaxBasisDepreciationAndAmortization	-15590000	USD
CY2017	avb	Reconciliation Of Income From Book Basis To Tax Basis Depreciation And Amortization ReconciliationOfIncomeFromBookBasisToTaxBasisDepreciationAndAmortization	-3642000	USD
CY2019	avb	Reconciliation Of Income From Book Basis To Tax Basis Mark To Market Interest ReconciliationOfIncomeFromBookBasisToTaxBasisMarkToMarketInterest	594000	USD
CY2018	avb	Reconciliation Of Income From Book Basis To Tax Basis Mark To Market Interest ReconciliationOfIncomeFromBookBasisToTaxBasisMarkToMarketInterest	2276000	USD
CY2017	avb	Reconciliation Of Income From Book Basis To Tax Basis Mark To Market Interest ReconciliationOfIncomeFromBookBasisToTaxBasisMarkToMarketInterest	18096000	USD
CY2019	avb	Reconciliation Of Income From Book Basis To Tax Basis Compensation Expense ReconciliationOfIncomeFromBookBasisToTaxBasisCompensationExpense	-4738000	USD
CY2018	avb	Reconciliation Of Income From Book Basis To Tax Basis Compensation Expense ReconciliationOfIncomeFromBookBasisToTaxBasisCompensationExpense	-13126000	USD
CY2017	avb	Reconciliation Of Income From Book Basis To Tax Basis Compensation Expense ReconciliationOfIncomeFromBookBasisToTaxBasisCompensationExpense	-20243000	USD
CY2019	avb	Reconciliation Of Income From Book Basis To Tax Basis Other Adjustments ReconciliationOfIncomeFromBookBasisToTaxBasisOtherAdjustments	22637000	USD
CY2018	avb	Reconciliation Of Income From Book Basis To Tax Basis Other Adjustments ReconciliationOfIncomeFromBookBasisToTaxBasisOtherAdjustments	19617000	USD
CY2017	avb	Reconciliation Of Income From Book Basis To Tax Basis Other Adjustments ReconciliationOfIncomeFromBookBasisToTaxBasisOtherAdjustments	-392000	USD
CY2019	avb	Reconciliation Of Income From Book Basis To Tax Basis Net Income Loss Tax Basis ReconciliationOfIncomeFromBookBasisToTaxBasisNetIncomeLossTaxBasis	698174000	USD
CY2018	avb	Reconciliation Of Income From Book Basis To Tax Basis Net Income Loss Tax Basis ReconciliationOfIncomeFromBookBasisToTaxBasisNetIncomeLossTaxBasis	796680000	USD
CY2017	avb	Reconciliation Of Income From Book Basis To Tax Basis Net Income Loss Tax Basis ReconciliationOfIncomeFromBookBasisToTaxBasisNetIncomeLossTaxBasis	788373000	USD
CY2019	avb	Common Stock Dividends Ordinary Taxable Distribution Percentage CommonStockDividendsOrdinaryTaxableDistributionPercentage	0.96
CY2018	avb	Common Stock Dividends Ordinary Taxable Distribution Percentage CommonStockDividendsOrdinaryTaxableDistributionPercentage	0.76
CY2017	avb	Common Stock Dividends Ordinary Taxable Distribution Percentage CommonStockDividendsOrdinaryTaxableDistributionPercentage	0.75
CY2019	avb	Common Stock Dividends Long Term Capital Gain Percentage CommonStockDividendsLongTermCapitalGainPercentage	0.03
CY2018	avb	Common Stock Dividends Long Term Capital Gain Percentage CommonStockDividendsLongTermCapitalGainPercentage	0.11
CY2017	avb	Common Stock Dividends Long Term Capital Gain Percentage CommonStockDividendsLongTermCapitalGainPercentage	0.18
CY2019	avb	Common Stock Dividends Unrecaptured Section1250 Gain Percentage CommonStockDividendsUnrecapturedSection1250GainPercentage	0.01
CY2018	avb	Common Stock Dividends Unrecaptured Section1250 Gain Percentage CommonStockDividendsUnrecapturedSection1250GainPercentage	0.13
CY2017	avb	Common Stock Dividends Unrecaptured Section1250 Gain Percentage CommonStockDividendsUnrecapturedSection1250GainPercentage	0.07
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	139054191	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137844755	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137523771	shares
CY2019	us-gaap	Weighted Average Number Of Limited Partnership And General Partnership Unit Outstanding Basic And Diluted WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted	7500	shares
CY2018	us-gaap	Weighted Average Number Of Limited Partnership And General Partnership Unit Outstanding Basic And Diluted WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted	7500	shares
CY2017	us-gaap	Weighted Average Number Of Limited Partnership And General Partnership Unit Outstanding Basic And Diluted WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted	7500	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	509859	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	436986	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	535415	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139571550	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	138289241	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	138066686	shares
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	785974000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	974525000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	876921000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	2063000	USD
CY2018	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	2839000	USD
CY2017	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	2463000	USD
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	783911000	USD
CY2018	us-gaap	Undistributed Earnings UndistributedEarnings	971686000	USD
CY2017	us-gaap	Undistributed Earnings UndistributedEarnings	874458000	USD
CY2019	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	1441000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	139054191	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137844755	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	137523771	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.64
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.05
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.36
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	785974000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	974525000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	876921000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-46000	USD
CY2018	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-44000	USD
CY2017	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-42000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	786020000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	974569000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	876963000	USD
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139571550	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	138289241	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	138066686	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.63
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.05
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.35
CY2019	avb	Business Combination Acquisition Related Costs Abandoned Pursuit Costs BusinessCombinationAcquisitionRelatedCostsAbandonedPursuitCosts	4896000	USD
CY2018	avb	Business Combination Acquisition Related Costs Abandoned Pursuit Costs BusinessCombinationAcquisitionRelatedCostsAbandonedPursuitCosts	4388000	USD
CY2017	avb	Business Combination Acquisition Related Costs Abandoned Pursuit Costs BusinessCombinationAcquisitionRelatedCostsAbandonedPursuitCosts	2370000	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2018	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	26000	USD
CY2017	us-gaap	Gain On Business Interruption Insurance Recovery GainOnBusinessInterruptionInsuranceRecovery	3498000	USD
CY2019Q4	avb	Number Of Communities Held For Sale NumberOfCommunitiesHeldForSale	1	community
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.</span></div>
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;">Reclassifications</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Certain reclassifications have been made to amounts in prior years' notes to financial statements to conform to current year presentations as a result of changes in held for sale classification, disposition activity and segment classification.</span></div>
CY2019Q4	us-gaap	Notes Payable NotesPayable	7355371000	USD
CY2018Q4	us-gaap	Notes Payable NotesPayable	7102355000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	62823000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	60331000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	64420000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	7355371000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	7102355000	USD
CY2019Q4	us-gaap	Pledged Assets Not Separately Reported Real Estate PledgedAssetsNotSeparatelyReportedRealEstate	1592764000	USD
CY2019	us-gaap	Debt Instrument Redemption Price Percentage DebtInstrumentRedemptionPricePercentage	1
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	280000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	109804	shares
CY2019	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	2069	shares
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	84710	shares
CY2019	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	13894	shares
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation Forfeited StockIssuedDuringPeriodSharesShareBasedCompensationForfeited	2361	shares
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	1467786000	USD
CY2019	avb	Payment For Redemption Of Preferred Interest Obligation PaymentForRedemptionOfPreferredInterestObligation	1400000	USD
CY2018	avb	Payment For Redemption Of Preferred Interest Obligation PaymentForRedemptionOfPreferredInterestObligation	1120000	USD
CY2017	avb	Payment For Redemption Of Preferred Interest Obligation PaymentForRedemptionOfPreferredInterestObligation	2000000	USD
CY2019Q4	avb	Equity Method Investment Summarized Financial Information Real Estate Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateNet	1204470000	USD
CY2018Q4	avb	Equity Method Investment Summarized Financial Information Real Estate Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateNet	1420453000	USD
CY2019Q4	avb	Equity Method Investment Summarized Financial Information Assets Other Assets EquityMethodInvestmentSummarizedFinancialInformationAssetsOtherAssets	196488000	USD
CY2018Q4	avb	Equity Method Investment Summarized Financial Information Assets Other Assets EquityMethodInvestmentSummarizedFinancialInformationAssetsOtherAssets	47333000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	1400958000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	1467786000	USD
CY2019Q4	avb	Equity Method Investment Summarized Financial Information Mortgage Notes Payable And Credit Facility EquityMethodInvestmentSummarizedFinancialInformationMortgageNotesPayableAndCreditFacility	782257000	USD
CY2018Q4	avb	Equity Method Investment Summarized Financial Information Mortgage Notes Payable And Credit Facility EquityMethodInvestmentSummarizedFinancialInformationMortgageNotesPayableAndCreditFacility	837311000	USD
CY2019Q4	avb	Equity Method Investment Summarized Financial Information Liabilities Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesOtherLiabilities	157379000	USD
CY2018Q4	avb	Equity Method Investment Summarized Financial Information Liabilities Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesOtherLiabilities	15627000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity Or Capital EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital	461322000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity Or Capital EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital	614848000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	1400958000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	144431000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	92533000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	102261000	USD
CY2019	avb	Equity Method Investment Summarized Financial Information Operating And Other Expenses EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOtherExpenses	55732000	USD
CY2018	avb	Equity Method Investment Summarized Financial Information Operating And Other Expenses EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOtherExpenses	35840000	USD
CY2017	avb	Equity Method Investment Summarized Financial Information Operating And Other Expenses EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOtherExpenses	40341000	USD
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	21748000	USD
CY2018	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	54202000	USD
CY2017	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	136333000	USD
CY2019	avb	Equity Method Investment Summarized Financial Information Interest Expense EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	33896000	USD
CY2018	avb	Equity Method Investment Summarized Financial Information Interest Expense EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	22500000	USD
CY2017	avb	Equity Method Investment Summarized Financial Information Interest Expense EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	27122000	USD
CY2019	avb	Equity Method Investment Summarized Financial Information Depreciation And Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization	58387000	USD
CY2018	avb	Equity Method Investment Summarized Financial Information Depreciation And Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization	26706000	USD
CY2017	avb	Equity Method Investment Summarized Financial Information Depreciation And Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization	25914000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	18164000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	61689000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	145217000	USD
CY2019	avb	Equity Method Investment Net Income Loss Portion Attributable To Parent EquityMethodInvestmentNetIncomeLossPortionAttributableToParent	10779000	USD
CY2018	avb	Equity Method Investment Net Income Loss Portion Attributable To Parent EquityMethodInvestmentNetIncomeLossPortionAttributableToParent	17519000	USD
CY2017	avb	Equity Method Investment Net Income Loss Portion Attributable To Parent EquityMethodInvestmentNetIncomeLossPortionAttributableToParent	73120000	USD
CY2019	avb	Equity Method Investments Amortization Of Excess Investment And Other EquityMethodInvestmentsAmortizationOfExcessInvestmentAndOther	-2127000	USD
CY2018	avb	Equity Method Investments Amortization Of Excess Investment And Other EquityMethodInvestmentsAmortizationOfExcessInvestmentAndOther	-2249000	USD
CY2017	avb	Equity Method Investments Amortization Of Excess Investment And Other EquityMethodInvestmentsAmortizationOfExcessInvestmentAndOther	-2376000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8652000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	15270000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	70744000	USD
CY2019	avb	Number Of Communities Acquired NumberOfCommunitiesAcquired	5	community
CY2018	avb	Number Of Communities Acquired NumberOfCommunitiesAcquired	4	community
CY2018	avb	Number Of Apartment Homes Acquired NumberOfApartmentHomesAcquired	1096	home
CY2017	avb	Number Of Communities Acquired NumberOfCommunitiesAcquired	3	community
CY2017	avb	Number Of Apartment Homes Acquired NumberOfApartmentHomesAcquired	1062	home
CY2019	avb	Number Of Land Parcels Sold NumberOfLandParcelsSold	2	land_parcel
CY2019Q4	avb	Number Of Communities Held For Sale NumberOfCommunitiesHeldForSale	1	community
CY2019	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	3812000	USD
CY2018	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	1044000	USD
CY2019Q4	us-gaap	Inventory Real Estate InventoryRealEstate	457809000	USD
CY2019	us-gaap	Proceeds From Legal Settlements ProceedsFromLegalSettlements	6292000	USD
CY2018	us-gaap	Proceeds From Legal Settlements ProceedsFromLegalSettlements	946000	USD
CY2017	us-gaap	Proceeds From Legal Settlements ProceedsFromLegalSettlements	6118000	USD
CY2019Q4	avb	Number Of Office Leases NumberOfOfficeLeases	17	Lease
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	103063000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	120261000	USD
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	14371000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	21788000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	23431000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	21898000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	20207000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1087000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	40133000	USD
CY2019Q4	avb	Lease Liability Payments Remainder Of Fiscal Year LeaseLiabilityPaymentsRemainderOfFiscalYear	13127000	USD
CY2019Q4	avb	Lease Liability Payments Due Year Two LeaseLiabilityPaymentsDueYearTwo	15135000	USD
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P26Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P53Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0463
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0506
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	12050000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	14055000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	14003000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	13473000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	13320000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	364284000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	1077000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1080000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1082000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1084000	USD
CY2019Q4	avb	Lease Liability Payments Due Year Three LeaseLiabilityPaymentsDueYearThree	15085000	USD
CY2019Q4	avb	Lease Liability Payments Due Year Four LeaseLiabilityPaymentsDueYearFour	14557000	USD
CY2019Q4	avb	Lease Liability Payments Due Year Five LeaseLiabilityPaymentsDueYearFive	14407000	USD
CY2019Q4	avb	Lease Liability Payments Due After Year Five LeaseLiabilityPaymentsDueAfterYearFive	404417000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	431185000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	120261000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	310924000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	45543000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	20207000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	25336000	USD
CY2019Q4	avb	Lease Liability Payments Due LeaseLiabilityPaymentsDue	476728000	USD
CY2019Q4	avb	Lease Liability LeaseLiability	140468000	USD
CY2019Q4	avb	Lease Liability Undiscounted Excess Amount LeaseLiabilityUndiscountedExcessAmount	336260000	USD
CY2019	avb	Attainment Percentage Of Physical Occupancy AttainmentPercentageOfPhysicalOccupancy	0.95
CY2019	avb	Anniversary Of Completion Of Development Or Redevelopment AnniversaryOfCompletionOfDevelopmentOrRedevelopment	P1Y
CY2019	us-gaap	Profit Loss ProfitLoss	786103000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	974175000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	876660000	USD
CY2019	avb	Indirect Operating Expenses Net Of Corporate Income IndirectOperatingExpensesNetOfCorporateIncome	83008000	USD
CY2018	avb	Indirect Operating Expenses Net Of Corporate Income IndirectOperatingExpensesNetOfCorporateIncome	80227000	USD
CY2017	avb	Indirect Operating Expenses Net Of Corporate Income IndirectOperatingExpensesNetOfCorporateIncome	68312000	USD
CY2019	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	4991000	USD
CY2018	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	3265000	USD
CY2017	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	2736000	USD
CY2019	us-gaap	Interest Expense InterestExpense	203585000	USD
CY2018	us-gaap	Interest Expense InterestExpense	220974000	USD
CY2017	us-gaap	Interest Expense InterestExpense	199661000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-602000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-17492000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-25472000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	58042000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	60369000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	53695000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	8652000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	15270000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	70744000	USD
CY2019	us-gaap	Depreciation Depreciation	661578000	USD
CY2018	us-gaap	Depreciation Depreciation	631196000	USD
CY2017	us-gaap	Depreciation Depreciation	584150000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13003000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-160000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	141000	USD
CY2019	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	215000	USD
CY2017	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	6250000	USD
CY2019	avb	Gain On Sale Of Real Estate Assets In Continuing Operations GainOnSaleOfRealEstateAssetsInContinuingOperations	166105000	USD
CY2018	avb	Gain On Sale Of Real Estate Assets In Continuing Operations GainOnSaleOfRealEstateAssetsInContinuingOperations	374976000	USD
CY2017	avb	Gain On Sale Of Real Estate Assets In Continuing Operations GainOnSaleOfRealEstateAssetsInContinuingOperations	252599000	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	439000	USD
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	345000	USD
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-10907000	USD
CY2019	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	3812000	USD
CY2018	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	1044000	USD
CY2017	us-gaap	Other Selling General And Administrative Expense OtherSellingGeneralAndAdministrativeExpense	0	USD
CY2019	avb	Disposal Group Not Discontinued Operation Net Operating Income From Assets Held For Sale Not Classified As Discontinued Operations DisposalGroupNotDiscontinuedOperationNetOperatingIncomeFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	12318000	USD
CY2018	avb	Disposal Group Not Discontinued Operation Net Operating Income From Assets Held For Sale Not Classified As Discontinued Operations DisposalGroupNotDiscontinuedOperationNetOperatingIncomeFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	79372000	USD
CY2017	avb	Disposal Group Not Discontinued Operation Net Operating Income From Assets Held For Sale Not Classified As Discontinued Operations DisposalGroupNotDiscontinuedOperationNetOperatingIncomeFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	105663000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	1627210000	USD
CY2019Q4	avb	Real Estate Gross At Carrying Value Excluding Gross Real Estate Assets Held For Sale RealEstateGrossAtCarryingValueExcludingGrossRealEstateAssetsHeldForSale	23558460000	USD
CY2019	avb	Disposal Group Not Discontinued Operation Net Operating Income From Assets Held For Sale Not Classified As Discontinued Operations DisposalGroupNotDiscontinuedOperationNetOperatingIncomeFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	12318000	USD
CY2018	avb	Disposal Group Not Discontinued Operation Net Operating Income From Assets Held For Sale Not Classified As Discontinued Operations DisposalGroupNotDiscontinuedOperationNetOperatingIncomeFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	79372000	USD
CY2017	avb	Disposal Group Not Discontinued Operation Net Operating Income From Assets Held For Sale Not Classified As Discontinued Operations DisposalGroupNotDiscontinuedOperationNetOperatingIncomeFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	105663000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	14072000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	1627210000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	1518834000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	1398978000	USD
CY2019	avb	Revenue From Assets Heldfor Sale Not Classified As Discontinued Operations RevenueFromAssetsHeldforSaleNotClassifiedAsDiscontinuedOperations	21441000	USD
CY2018	avb	Revenue From Assets Heldfor Sale Not Classified As Discontinued Operations RevenueFromAssetsHeldforSaleNotClassifiedAsDiscontinuedOperations	124373000	USD
CY2017	avb	Revenue From Assets Heldfor Sale Not Classified As Discontinued Operations RevenueFromAssetsHeldforSaleNotClassifiedAsDiscontinuedOperations	170172000	USD
CY2019	avb	Operating Expenses From Assets Held For Sale Not Classified As Discontinued Operations OperatingExpensesFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	9123000	USD
CY2018	avb	Operating Expenses From Assets Held For Sale Not Classified As Discontinued Operations OperatingExpensesFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	45001000	USD
CY2017	avb	Operating Expenses From Assets Held For Sale Not Classified As Discontinued Operations OperatingExpensesFromAssetsHeldForSaleNotClassifiedAsDiscontinuedOperations	64509000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	1518834000	USD
CY2018Q4	avb	Real Estate Gross At Carrying Value Excluding Gross Real Estate Assets Held For Sale RealEstateGrossAtCarryingValueExcludingGrossRealEstateAssetsHeldForSale	21942927000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	1398978000	USD
CY2017Q4	avb	Real Estate Gross At Carrying Value Excluding Gross Real Estate Assets Held For Sale RealEstateGrossAtCarryingValueExcludingGrossRealEstateAssetsHeldForSale	20380549000	USD
CY2019Q4	avb	Real Estate Held For Sale Gross RealEstateHeldForSaleGross	48412000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	24885000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19707000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17085000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	9396000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	10208000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	9474000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4960000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3572000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4147000	USD
CY2017	us-gaap	Derivative Excluded Component Gain Recognized In Earnings DerivativeExcludedComponentGainRecognizedInEarnings	753000	USD
CY2019	avb	Derivative Notional Amounts Settled During Period DerivativeNotionalAmountsSettledDuringPeriod	250000000	USD
CY2019	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	12309000	USD
CY2019	us-gaap	Amortization Period Of Deferred Gain Loss On Discontinuation Of Interest Rate Fair Value Hedge1 AmortizationPeriodOfDeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge1	P10Y
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-11930000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6571000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-6143000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-7070000	USD
CY2019Q1	us-gaap	Revenues Revenues	566184000	USD
CY2019Q2	us-gaap	Revenues Revenues	577263000	USD
CY2019Q3	us-gaap	Revenues Revenues	587613000	USD
CY2019Q4	us-gaap	Revenues Revenues	593566000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	170418000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	168305000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	279709000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	167671000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	170366000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	168281000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	279677000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	167650000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.21
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.00
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.20
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.21
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.00
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.20
CY2018Q1	us-gaap	Revenues Revenues	560792000	USD
CY2018Q2	us-gaap	Revenues Revenues	569239000	USD
CY2018Q3	us-gaap	Revenues Revenues	575982000	USD
CY2018Q4	us-gaap	Revenues Revenues	578522000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	141590000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	254543000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	192407000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	385636000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	141643000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	254662000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	192486000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	385734000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.84
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.39
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.79
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.84
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.39
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.79
CY2019Q4	avb	Number Of Apartment Homes In Communities Owned NumberOfApartmentHomesInCommunitiesOwned	83329	home
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	4534157000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	15637317000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	3435398000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	4534157000	USD
CY2019Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	19072715000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	23606872000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	5173883000	USD
CY2019Q4	avb	Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements Net RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsNet	18432989000	USD
CY2018Q4	avb	Real Estate And Accumulated Depreciation Carrying Amount Of Land And Buildings And Improvements Net RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndBuildingsAndImprovementsNet	17730930000	USD
CY2019Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	7355371000	USD
CY2019Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	22635619000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	22342576000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	21935936000	USD
CY2016Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	20776626000	USD
CY2019	avb	Real Estate Acquisitions Construction Costs And Improvements RealEstateAcquisitionsConstructionCostsAndImprovements	1615949000	USD
CY2018	avb	Real Estate Acquisitions Construction Costs And Improvements RealEstateAcquisitionsConstructionCostsAndImprovements	1568878000	USD
CY2017	avb	Real Estate Acquisitions Construction Costs And Improvements RealEstateAcquisitionsConstructionCostsAndImprovements	1526516000	USD
CY2019	avb	Real Estate Dispositions Including Impairment Loss On Planned Dispositions RealEstateDispositionsIncludingImpairmentLossOnPlannedDispositions	351653000	USD
CY2018	avb	Real Estate Dispositions Including Impairment Loss On Planned Dispositions RealEstateDispositionsIncludingImpairmentLossOnPlannedDispositions	1162238000	USD
CY2017	avb	Real Estate Dispositions Including Impairment Loss On Planned Dispositions RealEstateDispositionsIncludingImpairmentLossOnPlannedDispositions	367206000	USD
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	23606872000	USD
CY2018Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	22342576000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	21935936000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	4218379000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	4611646000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	4218379000	USD
CY2016Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3743632000	USD
CY2019	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	661578000	USD
CY2018	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	631196000	USD
CY2017	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	584150000	USD
CY2019	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	99341000	USD
CY2018	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	237929000	USD
CY2017	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	109403000	USD
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	5173883000	USD
CY2018Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	4611646000	USD

Files In Submission

Name	View Source	Status
0000915912-20-000004-index-headers.html	Edgar Link	pending
0000915912-20-000004-index.html	Edgar Link	pending
0000915912-20-000004.txt	Edgar Link	pending
0000915912-20-000004-xbrl.zip	Edgar Link	pending
a201910-k.htm	Edgar Link	pending
a201910-k_htm.xml	Edgar Link	completed
avb-20191231.xsd	Edgar Link	pending
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avb-20191231_def.xml	Edgar Link	unprocessable
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avb-20191231_pre.xml	Edgar Link	unprocessable
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2019 Q4 Form 10-K Financial Statement

#000091591220000004 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AVB AVALONBAY COMMUNITIES INC Stock $avb

2019 Q4 Form 10-K Financial Statement

#000091591220000004 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AVB
AVALONBAY COMMUNITIES INC Stock $avb