$EQR
EQUITY RESIDENTIAL Stock $eqr

$eqr Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000095017023003060 Filed on February 16, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$705.1M	$699.7M	$2.735B
YoY Change	7.92%	8.46%	11.01%
Cost Of Revenue	$275.7M	$231.4M	$982.6M
YoY Change	7.57%	-1.71%	3.56%
Gross Profit	$429.4M	$468.3M	$1.753B
YoY Change	8.14%	14.3%	15.67%
Gross Profit Margin	60.9%	66.93%	64.08%
Selling, General & Admin	$16.17M	$11.68M	$58.71M
YoY Change	-6.22%	-12.88%	3.9%
% of Gross Profit	3.76%	2.49%	3.35%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$215.8M	$214.3M	$882.2M
YoY Change	-6.14%	-3.59%	5.24%
% of Gross Profit	50.27%	45.75%	50.33%
Operating Expenses	$232.0M	$225.9M	$940.9M
YoY Change	-6.15%	-4.11%	5.15%
Operating Profit	$297.6M	$242.4M	$1.116B
YoY Change	98.6%	39.23%	-33.4%
Interest Expense	-$66.84M	-$70.79M	-$289.5M
YoY Change	-6.31%	-1.59%	13.27%
% of Operating Profit	-22.46%	-29.2%	-25.94%
Other Income/Expense, Net	-$8.995M	-$4.473M	-$13.66M
YoY Change	194.34%	-46.54%	-29.11%
Pretax Income	$221.8M	$167.1M	$812.9M
YoY Change	194.33%	-70.24%	-41.98%
Income Tax	$298.0K	$175.0K	$900.0K
% Of Pretax Income	0.13%	0.1%	0.11%
Net Earnings	$212.0M	$158.2M	$776.9M
YoY Change	199.63%	-69.97%	-41.71%
Net Earnings / Revenue	30.07%	22.62%	28.4%
Basic Earnings Per Share	$0.56		$2.06
Diluted Earnings Per Share	$0.56	$0.43	$2.05
COMMON SHARES
Basic Shares Outstanding	378.6M	377.9M	376.2M
Diluted Shares Outstanding	390.7M		389.5M

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments	$133.5M	$53.87M	$53.87M
YoY Change	224.4%	-56.5%	-56.5%
Cash & Equivalents	$133.5M	$53.87M	$53.87M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$133.5M	$53.87M	$53.87M
YoY Change	224.4%	-56.5%	-56.5%
LONG-TERM ASSETS
Property, Plant & Equipment	$19.36B	$19.52B	$19.52B
YoY Change	-4.79%	-4.26%	-4.26%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$292.3M	$279.0M	$279.0M
YoY Change	94.73%	118.93%	118.93%
Other Assets	$85.63M	$83.30M	$83.30M
YoY Change	21.35%	-64.76%	-64.76%
Total Long-Term Assets	$19.97B	$20.16B	$20.16B
YoY Change	-3.94%	-4.19%	-4.19%
TOTAL ASSETS
Total Short-Term Assets	$133.5M	$53.87M	$53.87M
Total Long-Term Assets	$19.97B	$20.16B	$20.16B
Total Assets	$20.10B	$20.22B	$20.22B
YoY Change	-3.49%	-4.49%	-4.49%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$144.7M	$96.03M	$96.03M
YoY Change	-8.26%	-10.27%	-10.27%
Accrued Expenses	$364.6M	$375.1M	$306.1M
YoY Change	-0.96%	-1.78%	120.26%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$130.0M	$130.0M
YoY Change	-100.0%	-58.75%	-58.75%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$837.0M	$914.6M	$845.7M
YoY Change	-13.35%	-17.12%	-1.74%
LONG-TERM LIABILITIES
Long-Term Debt	$7.312B	$7.296B	$7.365B
YoY Change	-8.94%	-9.1%	-10.94%
Other Long-Term Liabilities	$283.4M	$306.9M	$306.9M
YoY Change	-6.66%	-13.07%	-13.07%
Total Long-Term Liabilities	$7.596B	$7.603B	$7.672B
YoY Change	-8.86%	-9.27%	-11.03%
TOTAL LIABILITIES
Total Short-Term Liabilities	$837.0M	$914.6M	$845.7M
Total Long-Term Liabilities	$7.596B	$7.603B	$7.672B
Total Liabilities	$8.433B	$8.517B	$9.045B
YoY Change	-15.81%	-10.18%	-11.45%
SHAREHOLDERS EQUITY
Retained Earnings	$1.619B	$1.659B
YoY Change		-9.21%
Common Stock	$3.789M	$3.784M
YoY Change		0.77%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$11.14B	$11.17B	$11.17B
YoY Change
Total Liabilities & Shareholders Equity	$20.10B	$20.22B	$20.22B
YoY Change	-3.49%	-4.49%	-4.49%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$212.0M	$158.2M	$776.9M
YoY Change	199.63%	-69.97%	-41.71%
Depreciation, Depletion And Amortization	$215.8M	$214.3M	$882.2M
YoY Change	-6.14%	-3.59%	5.24%
Cash From Operating Activities	$393.3M	$334.5M	$1.455B
YoY Change	6.85%	18.64%	15.44%
INVESTING ACTIVITIES
Capital Expenditures	$72.78M	$108.7M	$447.5M
YoY Change	-141.93%	-114.16%	-121.61%
Acquisitions
YoY Change
Other Investing Activities	$116.5M	-$26.89M	$555.3M
YoY Change	-596.17%	-104.19%	-66.07%
Cash From Investing Activities	$43.72M	-$135.5M	$107.8M
YoY Change	-122.19%	8.41%	-124.8%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$139.6M
YoY Change
Debt Paid & Issued, Net	$40.00K		$3.392M
YoY Change	-97.93%		-54.56%
Cash From Financing Activities	-355.1M	-183.3M	-1.786B
YoY Change	-15.37%	681.47%	216.01%
NET CHANGE
Cash From Operating Activities	393.3M	334.5M	1.455B
Cash From Investing Activities	43.72M	-135.5M	107.8M
Cash From Financing Activities	-355.1M	-183.3M	-1.786B
Net Change In Cash	81.91M	15.71M	-223.1M
YoY Change	-132.96%	-88.23%	-185.63%
FREE CASH FLOW
Cash From Operating Activities	$393.3M	$334.5M	$1.455B
Capital Expenditures	$72.78M	$108.7M	$447.5M
Free Cash Flow	$320.5M	$225.9M	$1.007B
YoY Change	-40.82%	-78.47%	-69.77%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000906107
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	us-gaap	Derivative Instrument Gain Loss Reclassified From Aoci Into Income Effective Portion Statement Of Income Or Comprehensive Income Extensible Enumeration DerivativeInstrumentGainLossReclassifiedFromAociIntoIncomeEffectivePortionStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2022#InterestExpenseDebt
CY2021Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseLiability
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseRightOfUseAsset
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022	us-gaap	Derivative Instrument Gain Loss Reclassified From Aoci Into Income Effective Portion Statement Of Income Or Comprehensive Income Extensible Enumeration DerivativeInstrumentGainLossReclassifiedFromAociIntoIncomeEffectivePortionStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2022#InterestExpenseDebt
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseRightOfUseAsset
CY2020	us-gaap	Derivative Instrument Gain Loss Reclassified From Aoci Into Income Effective Portion Statement Of Income Or Comprehensive Income Extensible Enumeration DerivativeInstrumentGainLossReclassifiedFromAociIntoIncomeEffectivePortionStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2022#InterestExpenseDebt
CY2022Q4	us-gaap	Derivative Liability Statement Of Financial Position Extensible Enumeration DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2022#OtherLiabilities
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseLiability
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseRightOfUseAsset
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseLiability
CY2022Q4	us-gaap	Derivative Asset Statement Of Financial Position Extensible Enumeration DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2022#OtherAssets
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://www.equityapartments.com/20221231#OperatingAndFinanceLeaseRightOfUseAsset
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	1-12252
CY2022	dei	Entity Registrant Name EntityRegistrantName	EQUITY RESIDENTIAL
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3675988
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	Two North Riverside Plaza
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60606
CY2022	dei	City Area Code CityAreaCode	312
CY2022	dei	Local Phone Number LocalPhoneNumber	474-1300
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Security12b Title Security12bTitle	Common Shares of Beneficial Interest, $0.01 Par Value (Equity Residential)
CY2022	dei	Trading Symbol TradingSymbol	EQR
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	26800000000
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	378602684
CY2022	dei	Auditor Firm AuditorFirmId	42
CY2022	dei	Auditor Name AuditorName	Ernst and Young LLP
CY2022	dei	Auditor Location AuditorLocation	Chicago, Illinois, USA
CY2022Q4	us-gaap	Land Land	5580878000
CY2021Q4	us-gaap	Land Land	5814790000
CY2022Q4	eqr	Depreciable Property DepreciableProperty	22334369000
CY2021Q4	eqr	Depreciable Property DepreciableProperty	22370811000
CY2022Q4	us-gaap	Development In Process DevelopmentInProcess	112940000
CY2021Q4	us-gaap	Development In Process DevelopmentInProcess	24307000
CY2022Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	60567000
CY2021Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	62998000
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28088754000
CY2021Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28272906000
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	9027850000
CY2021Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	8354282000
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19060904000
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19918624000
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	279024000
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	127448000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53869000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	123832000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83303000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	236404000
CY2022Q4	eqr	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	462956000
CY2021Q4	eqr	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	474713000
CY2022Q4	us-gaap	Other Assets OtherAssets	278206000
CY2021Q4	us-gaap	Other Assets OtherAssets	288220000
CY2022Q4	us-gaap	Assets Assets	20218262000
CY2021Q4	us-gaap	Assets Assets	21169241000
CY2022Q4	us-gaap	Secured Debt SecuredDebt	1953438000
CY2021Q4	us-gaap	Secured Debt SecuredDebt	2191201000
CY2022Q4	us-gaap	Notes Payable NotesPayable	5342329000
CY2020	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	381562000
CY2021Q4	us-gaap	Notes Payable NotesPayable	5835222000
CY2022Q4	eqr	Line Of Credit And Commercial Paper LineOfCreditAndCommercialPaper	129955000
CY2021Q4	eqr	Line Of Credit And Commercial Paper LineOfCreditAndCommercialPaper	315030000
CY2022Q4	eqr	Accounts Payable And Accrued Liabilities Current And Noncurrent Other Than Interest And Dividend Payable AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentOtherThanInterestAndDividendPayable	96028000
CY2021Q4	eqr	Accounts Payable And Accrued Liabilities Current And Noncurrent Other Than Interest And Dividend Payable AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentOtherThanInterestAndDividendPayable	107013000
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	66310000
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	69510000
CY2022Q4	eqr	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	308748000
CY2021Q4	eqr	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	312335000
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	306941000
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	353102000
CY2022Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	68940000
CY2021Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	66141000
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	244621000
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CY2022Q4	us-gaap	Liabilities Liabilities	8517310000
CY2021Q4	us-gaap	Liabilities Liabilities	9483056000
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	318273000
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	498977000
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
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CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	745600
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CY2022	eqr	Cost Of Property Management CostOfPropertyManagement	110304000
CY2021	eqr	Cost Of Property Management CostOfPropertyManagement	98155000
CY2020	eqr	Cost Of Property Management CostOfPropertyManagement	93825000
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	58710000
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	56506000
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CY2022	us-gaap	Depreciation Depreciation	882168000
CY2021	us-gaap	Depreciation Depreciation	838272000
CY2020	us-gaap	Depreciation Depreciation	820832000
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	1923459000
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CY2020	us-gaap	Costs And Expenses CostsAndExpenses	1785522000
CY2022	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	304325000
CY2021	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	1072183000
CY2020	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	531807000
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	16769000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1116046000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1675841000
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	1317990000
CY2022	us-gaap	Interest And Other Income InterestAndOtherIncome	2193000
CY2021	us-gaap	Interest And Other Income InterestAndOtherIncome	25666000
CY2020	us-gaap	Interest And Other Income InterestAndOtherIncome	5935000
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	13664000
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	19275000
CY2020	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	17510000
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	282920000
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	272473000
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	365073000
CY2022	eqr	Amortization Of Deferred Financing Costs AmortizationOfDeferredFinancingCosts	8729000
CY2021	eqr	Amortization Of Deferred Financing Costs AmortizationOfDeferredFinancingCosts	8737000
CY2020	eqr	Amortization Of Deferred Financing Costs AmortizationOfDeferredFinancingCosts	8939000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	812926000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1401022000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	932403000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	900000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	915000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	852000
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5031000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3398000
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3284000
CY2021	eqr	Gain Loss On Sales Of Land Parcels GainLossOnSalesOfLandParcels	5000
CY2020	eqr	Gain Loss On Sales Of Land Parcels GainLossOnSalesOfLandParcels	34234000
CY2022	us-gaap	Profit Loss ProfitLoss	806995000
CY2021	us-gaap	Profit Loss ProfitLoss	1396714000
CY2020	us-gaap	Profit Loss ProfitLoss	962501000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	776911000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1332850000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	913636000
CY2022	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3090000
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3090000
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3090000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	773821000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1329760000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	910546000
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.06
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.56
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.45
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	376209000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	373833000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	371791000
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.05
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.54
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.45
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	389450000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	388089000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	385874000
CY2022	us-gaap	Profit Loss ProfitLoss	806995000
CY2021	us-gaap	Profit Loss ProfitLoss	1396714000
CY2020	us-gaap	Profit Loss ProfitLoss	962501000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	20654000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1190000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-11071000
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-9394000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-35087000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	31725000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9394000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	33897000
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	838720000
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1406108000
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	996398000
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	31132000
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	64183000
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	50084000
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	807588000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1341925000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	946314000
CY2022	us-gaap	Profit Loss ProfitLoss	806995000
CY2021	us-gaap	Profit Loss ProfitLoss	1396714000
CY2020	us-gaap	Profit Loss ProfitLoss	962501000
CY2022	us-gaap	Depreciation Depreciation	882168000
CY2021	us-gaap	Depreciation Depreciation	838272000
CY2020	us-gaap	Depreciation Depreciation	820832000
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8729000
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8737000
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8939000
CY2021	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-154000
CY2020	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-71000
CY2022	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5004000
CY2021	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5302000
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5231000
CY2022	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	11059000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1454756000
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1260184000
CY2021	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	9382000
CY2020	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	35075000
CY2022	eqr	Operating And Finance Lease Right Of Use Asset Amortization OperatingAndFinanceLeaseRightOfUseAssetAmortization	12157000
CY2021	eqr	Operating And Finance Lease Right Of Use Asset Amortization OperatingAndFinanceLeaseRightOfUseAssetAmortization	13266000
CY2020	eqr	Operating And Finance Lease Right Of Use Asset Amortization OperatingAndFinanceLeaseRightOfUseAssetAmortization	11682000
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	16769000
CY2022	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	4780000
CY2021	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	6526000
CY2020	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	6869000
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5031000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3398000
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3284000
CY2022	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	398000
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	56000
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	100000
CY2022	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	304325000
CY2021	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	1072183000
CY2020	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	531807000
CY2021	eqr	Gain Loss On Sales Of Land Parcels GainLossOnSalesOfLandParcels	5000
CY2020	eqr	Gain Loss On Sales Of Land Parcels GainLossOnSalesOfLandParcels	34234000
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-26150000
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-50000
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2061000
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	23432000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	29513000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	27810000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	23174000
CY2020	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1805000
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10893000
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5906000
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	53021000
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-266000
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	15381000
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	470000
CY2022	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-3200000
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	3614000
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-956000
CY2022	eqr	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-1524000
CY2021	eqr	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-5122000
CY2020	eqr	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-2204000
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-13394000
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4286000
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-8751000
CY2022	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	2799000
CY2021	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	5661000
CY2020	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	-9582000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1265536000
CY2022	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	113046000
CY2021	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1712131000
CY2020	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	48898000
CY2022	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	109345000
CY2021	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	206421000
CY2020	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	230332000
CY2022	eqr	Payments For Capital Expenditures To Real Estate PaymentsForCapitalExpendituresToRealEstate	221086000
CY2021	eqr	Payments For Capital Expenditures To Real Estate PaymentsForCapitalExpendituresToRealEstate	151019000
CY2022	eqr	Non Real Estate Capital Additions NonRealEstateCapitalAdditions	4050000
CY2021	eqr	Non Real Estate Capital Additions NonRealEstateCapitalAdditions	1696000
CY2020	eqr	Non Real Estate Capital Additions NonRealEstateCapitalAdditions	20100000
CY2020	eqr	Payments For Capital Expenditures To Real Estate PaymentsForCapitalExpendituresToRealEstate	135979000
CY2022	eqr	Payments Of Interest Capitalized For Real Estate And Unconsolidated Entities Under Development PaymentsOfInterestCapitalizedForRealEstateAndUnconsolidatedEntitiesUnderDevelopment	7105000
CY2021	eqr	Payments Of Interest Capitalized For Real Estate And Unconsolidated Entities Under Development PaymentsOfInterestCapitalizedForRealEstateAndUnconsolidatedEntitiesUnderDevelopment	15932000
CY2020	eqr	Payments Of Interest Capitalized For Real Estate And Unconsolidated Entities Under Development PaymentsOfInterestCapitalizedForRealEstateAndUnconsolidatedEntitiesUnderDevelopment	10165000
CY2022	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	720302000
CY2021	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	1707747000
CY2020	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	1113972000
CY2022	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	49855000
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	48534000
CY2022	eqr	Payments To Acquire Equity Method Investments Development And Other PaymentsToAcquireEquityMethodInvestmentsDevelopmentAndOther	109846000
CY2021	eqr	Payments To Acquire Equity Method Investments Development And Other PaymentsToAcquireEquityMethodInvestmentsDevelopmentAndOther	31257000
CY2020	eqr	Payments To Acquire Equity Method Investments Development And Other PaymentsToAcquireEquityMethodInvestmentsDevelopmentAndOther	5775000
CY2022	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	300000
CY2021	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1516000
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	1636000
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2061000
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	168291000
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	773000
CY2022	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	3584000
CY2021	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	191398000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	107792000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-434620000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	663586000
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	9894000
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6446000
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2923000
CY2022	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	48054000
CY2021	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	58428000
CY2020	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	519204000
CY2022	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	286461000
CY2021	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	156815000
CY2020	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	160522000
CY2022	eqr	Repayments Of Mortgage Notes Payable RepaymentsOfMortgageNotesPayable	3392000
CY2021	eqr	Repayments Of Mortgage Notes Payable RepaymentsOfMortgageNotesPayable	7465000
CY2020	eqr	Repayments Of Mortgage Notes Payable RepaymentsOfMortgageNotesPayable	7759000
CY2021	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	497470000
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	500000000
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	750000000
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	10000000
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1870000000
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	10000000
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1890000000
CY2022	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	6036083000
CY2021	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	7590200000
CY2020	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	7450997000
CY2022	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	6221158000
CY2021	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	7690000000
CY2020	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	8034000000
CY2020	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	1240000
CY2022	eqr	Finance Ground Lease Principal Payments FinanceGroundLeasePrincipalPayments	2463000
CY2021	eqr	Finance Ground Lease Principal Payments FinanceGroundLeasePrincipalPayments	365000
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	139623000
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	4178000
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	4265000
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	4508000
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	25069000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	85445000
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12275000
CY2022	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	783000
CY2021	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	428000
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-63000
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-63000
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-63000
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	32178000
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	603000
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	1394000
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	417000
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	883938000
CY2022	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	1000
CY2020	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	13000
CY2022	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	2318000
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	931783000
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	900468000
CY2020	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	2234000
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3090000
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3090000
CY2022	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	30324000
CY2021	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	31316000
CY2020	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	32403000
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	18406000
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	5802000
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	11719000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1785612000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-565056000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1946393000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-223064000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	260508000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-17271000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	360236000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	99728000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	116999000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	137172000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	360236000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	99728000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53869000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	123832000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42591000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83303000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	236404000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	57137000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	137172000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	360236000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	99728000
CY2022	us-gaap	Interest Paid Net InterestPaidNet	267612000
CY2021	us-gaap	Interest Paid Net InterestPaidNet	252838000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	320854000
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	748000
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1179000
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1038000
CY2022	eqr	Amortization Of Deferred Financing Costs Investment In Real Estate Net AmortizationOfDeferredFinancingCostsInvestmentInRealEstateNet	506000
CY2021	eqr	Amortization Of Deferred Financing Costs Investment In Real Estate Net AmortizationOfDeferredFinancingCostsInvestmentInRealEstateNet	353000
CY2020	eqr	Amortization Of Deferred Financing Costs Investment In Real Estate Net AmortizationOfDeferredFinancingCostsInvestmentInRealEstateNet	240000
CY2022	eqr	Amortization Of Deferred Financing Costs Other Assets AmortizationOfDeferredFinancingCostsOtherAssets	2768000
CY2021	eqr	Amortization Of Deferred Financing Costs Other Assets AmortizationOfDeferredFinancingCostsOtherAssets	2338000
CY2020	eqr	Amortization Of Deferred Financing Costs Other Assets AmortizationOfDeferredFinancingCostsOtherAssets	2338000
CY2022	eqr	Amortization Of Deferred Financing Costs Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsMortgageNotesPayableNet	2080000
CY2021	eqr	Amortization Of Deferred Financing Costs Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsMortgageNotesPayableNet	2743000
CY2020	eqr	Amortization Of Deferred Financing Costs Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsMortgageNotesPayableNet	1815000
CY2022	eqr	Amortization Of Deferred Financing Costs Notes Net AmortizationOfDeferredFinancingCostsNotesNet	4387000
CY2021	eqr	Amortization Of Deferred Financing Costs Notes Net AmortizationOfDeferredFinancingCostsNotesNet	4009000
CY2022	eqr	Amortization Of Discounts And Premiums On Debt Notes Net AmortizationOfDiscountsAndPremiumsOnDebtNotesNet	2820000
CY2020	eqr	Amortization Of Deferred Financing Costs Notes Net AmortizationOfDeferredFinancingCostsNotesNet	5026000
CY2022	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	2184000
CY2021	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	2764000
CY2021	eqr	Amortization Of Discounts And Premiums On Debt Notes Net AmortizationOfDiscountsAndPremiumsOnDebtNotesNet	2538000
CY2020	eqr	Amortization Of Discounts And Premiums On Debt Notes Net AmortizationOfDiscountsAndPremiumsOnDebtNotesNet	2997000
CY2022	eqr	Amortization Of Deferred Settlements On Derivative Instruments Other Liabilities AmortizationOfDeferredSettlementsOnDerivativeInstrumentsOtherLiabilities	12000
CY2021	eqr	Amortization Of Deferred Settlements On Derivative Instruments Other Liabilities AmortizationOfDeferredSettlementsOnDerivativeInstrumentsOtherLiabilities	12000
CY2020	eqr	Amortization Of Deferred Settlements On Derivative Instruments Other Liabilities AmortizationOfDeferredSettlementsOnDerivativeInstrumentsOtherLiabilities	12000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-11071000
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-9394000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-35087000
CY2022	eqr	Write Off Pursuit Costs Investment In Real Estate WriteOffPursuitCostsInvestmentInRealEstate	1150000
CY2021	eqr	Write Off Pursuit Costs Investment In Real Estate WriteOffPursuitCostsInvestmentInRealEstate	5918000
CY2020	eqr	Write Off Pursuit Costs Investment In Real Estate WriteOffPursuitCostsInvestmentInRealEstate	6566000
CY2022	eqr	Write Off Of Pursuit Costs Investments In Unconsolidated Entities WriteOffOfPursuitCostsInvestmentsInUnconsolidatedEntities	2898000
CY2022	eqr	Write Off Of Pursuit Costs Other Assets WriteOffOfPursuitCostsOtherAssets	732000
CY2021	eqr	Write Off Of Pursuit Costs Other Assets WriteOffOfPursuitCostsOtherAssets	582000
CY2020	eqr	Write Off Of Pursuit Costs Other Assets WriteOffOfPursuitCostsOtherAssets	271000
CY2021	eqr	Write Off Of Pursuit Costs Accounts Payable And Accrued Expenses WriteOffOfPursuitCostsAccountsPayableAndAccruedExpenses	26000
CY2020	eqr	Write Off Of Pursuit Costs Accounts Payable And Accrued Expenses WriteOffOfPursuitCostsAccountsPayableAndAccruedExpenses	32000
CY2022	eqr	Income Loss From Equity Method Investments Merger IncomeLossFromEquityMethodInvestmentsMerger	3778000
CY2021	eqr	Income Loss From Equity Method Investments Merger IncomeLossFromEquityMethodInvestmentsMerger	2122000
CY2020	eqr	Income Loss From Equity Method Investments Merger IncomeLossFromEquityMethodInvestmentsMerger	1995000
CY2022	eqr	Other Liabilities Loss From Investments In Unconsolidated Entities Merger OtherLiabilitiesLossFromInvestmentsInUnconsolidatedEntitiesMerger	1253000
CY2021	eqr	Other Liabilities Loss From Investments In Unconsolidated Entities Merger OtherLiabilitiesLossFromInvestmentsInUnconsolidatedEntitiesMerger	1276000
CY2020	eqr	Other Liabilities Loss From Investments In Unconsolidated Entities Merger OtherLiabilitiesLossFromInvestmentsInUnconsolidatedEntitiesMerger	1289000
CY2022	eqr	Unrealized Gain Loss On Derivative Instruments Other Assets UnrealizedGainLossOnDerivativeInstrumentsOtherAssets	-21865000
CY2022	eqr	Unrealized Gain Loss On Derivative Instruments Other Liabilities UnrealizedGainLossOnDerivativeInstrumentsOtherLiabilities	1211000
CY2020	eqr	Unrealized Gain Loss On Derivative Instruments Other Liabilities UnrealizedGainLossOnDerivativeInstrumentsOtherLiabilities	1240000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	20654000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1190000
CY2022	eqr	Investment In Real Estate Net Under Development InvestmentInRealEstateNetUnderDevelopment	2365000
CY2021	eqr	Investment In Real Estate Net Under Development InvestmentInRealEstateNetUnderDevelopment	15318000
CY2020	eqr	Investment In Real Estate Net Under Development InvestmentInRealEstateNetUnderDevelopment	10165000
CY2022	eqr	Investments In Unconsolidated Entities Under Development InvestmentsInUnconsolidatedEntitiesUnderDevelopment	-4740000
CY2021	eqr	Investments In Unconsolidated Entities Under Development InvestmentsInUnconsolidatedEntitiesUnderDevelopment	-614000
CY2021	eqr	Investment In Real Estate Net Unconsolidated Entities Other InvestmentInRealEstateNetUnconsolidatedEntitiesOther	1395000
CY2022	eqr	Investments In Unconsolidated Entities InvestmentsInUnconsolidatedEntities	108556000
CY2021	eqr	Investments In Unconsolidated Entities InvestmentsInUnconsolidatedEntities	30642000
CY2020	eqr	Investments In Unconsolidated Entities InvestmentsInUnconsolidatedEntities	4275000
CY2022	eqr	Investments In Unconsolidated Entities Other Liabilities InvestmentsInUnconsolidatedEntitiesOtherLiabilities	1290000
CY2021	eqr	Investments In Unconsolidated Entities Other Liabilities InvestmentsInUnconsolidatedEntitiesOtherLiabilities	2010000
CY2020	eqr	Investments In Unconsolidated Entities Other Liabilities InvestmentsInUnconsolidatedEntitiesOtherLiabilities	1500000
CY2022	eqr	Debt Financing Costs Other Assets DebtFinancingCostsOtherAssets	-9566000
CY2021	eqr	Debt Financing Costs Other Assets DebtFinancingCostsOtherAssets	229000
CY2020	eqr	Debt Financing Costs Other Assets DebtFinancingCostsOtherAssets	-231000
CY2022	eqr	Debt Financing Costs Mortgage Notes Payable Net DebtFinancingCostsMortgageNotesPayableNet	-228000
CY2021	eqr	Debt Financing Costs Mortgage Notes Payable Net DebtFinancingCostsMortgageNotesPayableNet	-2344000
CY2020	eqr	Debt Financing Costs Mortgage Notes Payable Net DebtFinancingCostsMortgageNotesPayableNet	-2692000
CY2022	eqr	Debt Financing Costs Notes Net DebtFinancingCostsNotesNet	-100000
CY2021	eqr	Debt Financing Costs Notes Net DebtFinancingCostsNotesNet	-4331000
CY2022	eqr	Initial Measurement And Reclassifications Right Of Use Assets InitialMeasurementAndReclassificationsRightOfUseAssets	400000
CY2021	eqr	Initial Measurement And Reclassifications Right Of Use Assets InitialMeasurementAndReclassificationsRightOfUseAssets	-11308000
CY2022	eqr	Initial Measurement And Reclassifications Lease Liabilities InitialMeasurementAndReclassificationsLeaseLiabilities	400000
CY2021	eqr	Initial Measurement And Reclassifications Lease Liabilities InitialMeasurementAndReclassificationsLeaseLiabilities	-11308000
CY2022	eqr	Non Cash Share Distribution From Unconsolidated Entities Investments In Unconsolidated Entities NonCashShareDistributionFromUnconsolidatedEntitiesInvestmentsInUnconsolidatedEntities	4201000
CY2021	eqr	Non Cash Share Distribution From Unconsolidated Entities Investments In Unconsolidated Entities NonCashShareDistributionFromUnconsolidatedEntitiesInvestmentsInUnconsolidatedEntities	1430000
CY2022	eqr	Non Cash Share Distribution From Unconsolidated Entities Changes In Other Assets NonCashShareDistributionFromUnconsolidatedEntitiesChangesInOtherAssets	-4201000
CY2021	eqr	Non Cash Share Distribution From Unconsolidated Entities Changes In Other Assets NonCashShareDistributionFromUnconsolidatedEntitiesChangesInOtherAssets	-1430000
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	308
CY2022Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	10
CY2022Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	79597
CY2022Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	308
CY2022Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	79597
CY2022	eqr	Capitalized Costs Development And Renovation CapitalizedCostsDevelopmentAndRenovation	15600000
CY2021	eqr	Capitalized Costs Development And Renovation CapitalizedCostsDevelopmentAndRenovation	13900000
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020	eqr	Remaining Amount Of Alternative Minimum Tax Refund Received RemainingAmountOfAlternativeMinimumTaxRefundReceived	1600000
CY2022	eqr	State And Local Income Franchise And Excise Tax Benefit StateAndLocalIncomeFranchiseAndExciseTaxBenefit	900000
CY2021	eqr	State And Local Income Franchise And Excise Tax Benefit StateAndLocalIncomeFranchiseAndExciseTaxBenefit	915000
CY2020	eqr	State And Local Income Franchise And Excise Tax Benefit StateAndLocalIncomeFranchiseAndExciseTaxBenefit	852000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	900000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	915000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	852000
CY2022	eqr	Tax Treatment Of Dividends And Distributions Ordinary Dividends TaxTreatmentOfDividendsAndDistributionsOrdinaryDividends	1.75466
CY2021	eqr	Tax Treatment Of Dividends And Distributions Ordinary Dividends TaxTreatmentOfDividendsAndDistributionsOrdinaryDividends	1.40791
CY2020	eqr	Tax Treatment Of Dividends And Distributions Ordinary Dividends TaxTreatmentOfDividendsAndDistributionsOrdinaryDividends	1.34739
CY2022	eqr	Tax Treatment Of Dividends And Distributions Long Term Capital Gain TaxTreatmentOfDividendsAndDistributionsLongTermCapitalGain	0.42850
CY2021	eqr	Tax Treatment Of Dividends And Distributions Long Term Capital Gain TaxTreatmentOfDividendsAndDistributionsLongTermCapitalGain	0.73687
CY2020	eqr	Tax Treatment Of Dividends And Distributions Long Term Capital Gain TaxTreatmentOfDividendsAndDistributionsLongTermCapitalGain	0.77923
CY2022	eqr	Tax Treatment Of Dividends And Distributions Unrecaptured Section Twelve Hundred And Fifty Gain TaxTreatmentOfDividendsAndDistributionsUnrecapturedSectionTwelveHundredAndFiftyGain	0.29434
CY2021	eqr	Tax Treatment Of Dividends And Distributions Unrecaptured Section Twelve Hundred And Fifty Gain TaxTreatmentOfDividendsAndDistributionsUnrecapturedSectionTwelveHundredAndFiftyGain	0.26522
CY2020	eqr	Tax Treatment Of Dividends And Distributions Unrecaptured Section Twelve Hundred And Fifty Gain TaxTreatmentOfDividendsAndDistributionsUnrecapturedSectionTwelveHundredAndFiftyGain	0.24838
CY2022	eqr	Tax Treatment Of Dividends And Distributions Per Common Share Or Unit Outstanding TaxTreatmentOfDividendsAndDistributionsPerCommonShareOrUnitOutstanding	2.47750
CY2021	eqr	Tax Treatment Of Dividends And Distributions Per Common Share Or Unit Outstanding TaxTreatmentOfDividendsAndDistributionsPerCommonShareOrUnitOutstanding	2.41000
CY2020	eqr	Tax Treatment Of Dividends And Distributions Per Common Share Or Unit Outstanding TaxTreatmentOfDividendsAndDistributionsPerCommonShareOrUnitOutstanding	2.37500
CY2022Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.625
CY2021Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.6025
CY2020Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.6025
CY2022	eqr	Alternative Minimum Tax Preference Adjustment Per Share AlternativeMinimumTaxPreferenceAdjustmentPerShare	-0.01
CY2022	eqr	Alternative Minimum Tax Preference Adjustment Disclosed Under Treasury Regulation One Year Amounts Disclosure Per Share AlternativeMinimumTaxPreferenceAdjustmentDisclosedUnderTreasuryRegulationOneYearAmountsDisclosurePerShare	0.00979
CY2022	eqr	Alternative Minimum Tax Preference Adjustment Disclosed Under Treasury Regulation Year Three Amounts Disclosure Per Share AlternativeMinimumTaxPreferenceAdjustmentDisclosedUnderTreasuryRegulationYearThreeAmountsDisclosurePerShare	0.00000
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	239695
CY2022	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	66835
CY2021	eqr	Restricted Share Grants Net RestrictedShareGrantsNet	89593
CY2021	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	70702
CY2020	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	90196
CY2022	eqr	Restricted Share Grants Net RestrictedShareGrantsNet	174575
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1710692
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<p style="text-indent:2.267%;font-size:10.0pt;margin-top:18.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Use of Estimates</span></p><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">In preparation of the Company’s financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. </span>
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	375527195
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	372302000
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	371670884
CY2022	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	452532
CY2021	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	1354208
CY2020	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	122505
CY2022	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1740550
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	468021
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	378429708
CY2020	eqr	Restricted Share Grants Net RestrictedShareGrantsNet	178720
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	375527195
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	372302000
CY2021Q4	eqr	Units Outstanding UnitsOutstanding	12659027
CY2020Q4	eqr	Units Outstanding UnitsOutstanding	13858073
CY2019Q4	eqr	Units Outstanding UnitsOutstanding	13731315
CY2022	eqr	Issuance Of Ltips IssuanceOfLtips	223242
CY2021	eqr	Issuance Of Ltips IssuanceOfLtips	155162
CY2020	eqr	Issuance Of Ltips IssuanceOfLtips	249263
CY2022	eqr	Shares Issued During Period Shares Conversion Of Units To Common Shares SharesIssuedDuringPeriodSharesConversionOfUnitsToCommonShares	452532
CY2021	eqr	Shares Issued During Period Shares Conversion Of Units To Common Shares SharesIssuedDuringPeriodSharesConversionOfUnitsToCommonShares	1354208
CY2020	eqr	Shares Issued During Period Shares Conversion Of Units To Common Shares SharesIssuedDuringPeriodSharesConversionOfUnitsToCommonShares	122505
CY2022Q4	eqr	Units Outstanding UnitsOutstanding	12429737
CY2021Q4	eqr	Units Outstanding UnitsOutstanding	12659027
CY2020Q4	eqr	Units Outstanding UnitsOutstanding	13858073
CY2022Q4	eqr	Common Shares And Units Outstanding CommonSharesAndUnitsOutstanding	390859445
CY2021Q4	eqr	Common Shares And Units Outstanding CommonSharesAndUnitsOutstanding	388186222
CY2020Q4	eqr	Common Shares And Units Outstanding CommonSharesAndUnitsOutstanding	386160073
CY2022Q4	eqr	Units Ownership Interest In Operating Partnership UnitsOwnershipInterestInOperatingPartnership	0.032
CY2021Q4	eqr	Units Ownership Interest In Operating Partnership UnitsOwnershipInterestInOperatingPartnership	0.033
CY2020Q4	eqr	Units Ownership Interest In Operating Partnership UnitsOwnershipInterestInOperatingPartnership	0.036
CY2022Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	318300000
CY2021Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	499000000.0
CY2021Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	498977000
CY2020Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	338951000
CY2019Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	463400000
CY2022	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-176490000
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	158598000
CY2020	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-125224000
CY2022	eqr	Minority Interest Change In Carrying Value MinorityInterestChangeInCarryingValue	-4214000
CY2021	eqr	Minority Interest Change In Carrying Value MinorityInterestChangeInCarryingValue	1428000
CY2020	eqr	Minority Interest Change In Carrying Value MinorityInterestChangeInCarryingValue	775000
CY2022Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	318273000
CY2021Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	498977000
CY2020Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	338951000
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000
CY2022Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	13000000.0
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
CY2022Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	13000000.0
CY2022Q4	us-gaap	Land Land	5580878000
CY2021Q4	us-gaap	Land Land	5814790000
CY2022Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	19471503000
CY2021Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	19632284000
CY2022Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	2352050000
CY2021Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	2220203000
CY2022Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	510816000
CY2021Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	518324000
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28088754000
CY2021Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28272906000
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	9027850000
CY2021Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	8354282000
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19060904000
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19918624000
CY2022	eqr	Properties Acquired PropertiesAcquired	1
CY2022	eqr	Property Units Acquired PropertyUnitsAcquired	172
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	113000000
CY2021	eqr	Properties Acquired PropertiesAcquired	17
CY2021	eqr	Property Units Acquired PropertyUnitsAcquired	4747
CY2021Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	1709379000
CY2022	eqr	Disposed Properties DisposedProperties	3
CY2022	eqr	Disposed Units DisposedUnits	945
CY2022	eqr	Proceeds From Sale Of Property ProceedsFromSaleOfProperty	746150000
CY2022	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	304300000
CY2021	eqr	Disposed Properties DisposedProperties	14
CY2021	eqr	Disposed Units DisposedUnits	3053
CY2021	eqr	Proceeds From Sale Of Property ProceedsFromSaleOfProperty	1716775000
CY2021	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	1100000000
CY2022	eqr	Properties Agreed To Acquired PropertiesAgreedToAcquired	1
CY2022	eqr	Property Units Agreed To Be Acquired PropertyUnitsAgreedToBeAcquired	262
CY2022	eqr	Real Estate Commitments To Acquire Purchase Price RealEstateCommitmentsToAcquirePurchasePrice	78600000
CY2022Q4	eqr	Properties Contracted To Be Disposed PropertiesContractedToBeDisposed	1
CY2022Q4	eqr	Units Contracted To Be Disposed UnitsContractedToBeDisposed	18
CY2022Q4	eqr	Sales Price For Commitments To Dispose SalesPriceForCommitmentsToDispose	26750000
CY2022Q4	us-gaap	Sale Leaseback Transaction Net Book Value SaleLeasebackTransactionNetBookValue	17546000
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	279024000
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	127448000
CY2022Q4	us-gaap	Replacement Reserve Escrow ReplacementReserveEscrow	12549000
CY2021Q4	us-gaap	Replacement Reserve Escrow ReplacementReserveEscrow	11156000
CY2022Q4	us-gaap	Debt Instrument Cumulative Sinking Fund Payments DebtInstrumentCumulativeSinkingFundPayments	25304000
CY2021Q4	us-gaap	Debt Instrument Cumulative Sinking Fund Payments DebtInstrumentCumulativeSinkingFundPayments	19104000
CY2022Q4	eqr	Escrow Deposits For Mortgage And Replacement Reserves EscrowDepositsForMortgageAndReplacementReserves	37853000
CY2021Q4	eqr	Escrow Deposits For Mortgage And Replacement Reserves EscrowDepositsForMortgageAndReplacementReserves	30260000
CY2021Q4	eqr	Tax Deferred Exchange Proceeds TaxDeferredExchangeProceeds	166362000
CY2022Q4	eqr	Earnest Money On Pending Acquisitions EarnestMoneyOnPendingAcquisitions	4500000
CY2021Q4	eqr	Earnest Money On Pending Acquisitions EarnestMoneyOnPendingAcquisitions	2000000
CY2022Q4	eqr	Restricted Deposits On Real Estate Investments RestrictedDepositsOnRealEstateInvestments	229000
CY2021Q4	eqr	Restricted Deposits On Real Estate Investments RestrictedDepositsOnRealEstateInvestments	284000
CY2022Q4	eqr	Resident Security And Utility Deposits ResidentSecurityAndUtilityDeposits	38432000
CY2021Q4	eqr	Resident Security And Utility Deposits ResidentSecurityAndUtilityDeposits	35663000
CY2022Q4	eqr	Other Restricted Cash OtherRestrictedCash	2289000
CY2021Q4	eqr	Other Restricted Cash OtherRestrictedCash	1835000
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	45450000
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	206144000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83303000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	236404000
CY2022	eqr	Operating Lease Lease Income Loss OperatingLeaseLeaseIncomeLoss	2618375000
CY2021	eqr	Operating Lease Lease Income Loss OperatingLeaseLeaseIncomeLoss	2364447000
CY2020	eqr	Operating Lease Lease Income Loss OperatingLeaseLeaseIncomeLoss	2464790000
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2735180000
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2463997000
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2571705000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	2959000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	2971000
CY2022	eqr	Operating Lease Lease Income Bad Debt Net From Resident Payments OperatingLeaseLeaseIncomeBadDebtNetFromResidentPayments	34100000
CY2021	eqr	Operating Lease Lease Income Bad Debt Net From Resident Payments OperatingLeaseLeaseIncomeBadDebtNetFromResidentPayments	34800000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	462956000
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	474713000
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	308748000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	312335000
CY2021	eqr	Increase Decrease In Lease Liabilities Due To Change In Classification IncreaseDecreaseInLeaseLiabilitiesDueToChangeInClassification	11300000
CY2021	eqr	Increase Decrease In Rou Assets IncreaseDecreaseInROUAssets	11300000
CY2022	eqr	Finance Lease Right Of Use Asset Amortization Capitalized FinanceLeaseRightOfUseAssetAmortizationCapitalized	351000
CY2021	eqr	Finance Lease Right Of Use Asset Amortization Capitalized FinanceLeaseRightOfUseAssetAmortizationCapitalized	351000
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1391000
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1391000
CY2021	eqr	Finance Lease Interest Expense Capitalized FinanceLeaseInterestExpenseCapitalized	452000
CY2020	eqr	Finance Lease Interest Expense Capitalized FinanceLeaseInterestExpenseCapitalized	1029000
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1904000
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1464000
CY2022	us-gaap	Lease Cost LeaseCost	30817000
CY2021	us-gaap	Lease Cost LeaseCost	29587000
CY2020	us-gaap	Lease Cost LeaseCost	31489000
CY2021	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	383000
CY2020	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	567000
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2463000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1898000
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P24Y1M6D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P25Y2M12D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P18Y8M12D
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.028
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.028
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.030
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2662000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2880000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2946000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	85238000
CY2022Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	99656000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15173000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	15255000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	15024000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	14849000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	14923000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	816532000
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	891756000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	58776000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	54271000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	48333000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	40461000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	35808000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	119008000
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	356657000
CY2022Q4	eqr	Lessee Operating And Financing Lease Liability Payments Due LesseeOperatingAndFinancingLeaseLiabilityPaymentsDue	991412000
CY2022Q4	eqr	Lessee Operating And Financing Lease Liability Undiscounted Excess Amount LesseeOperatingAndFinancingLeaseLiabilityUndiscountedExcessAmount	682664000
CY2022Q4	eqr	Operating And Financing Lease Liability OperatingAndFinancingLeaseLiability	308748000
CY2021Q4	us-gaap	Secured Debt SecuredDebt	2191201000
CY2022	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	48054000
CY2022	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	286461000
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3392000
CY2022	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	2184000
CY2022	eqr	Amortization Of Deferred Financing Costs Net Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsNetMortgageNotesPayableNet	1852000
CY2022Q4	us-gaap	Secured Debt SecuredDebt	1953438000
CY2020Q4	us-gaap	Secured Debt SecuredDebt	2293890000
CY2021	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	58428000
CY2021	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	156815000
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	7465000
CY2021	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	2764000
CY2021	eqr	Amortization Of Deferred Financing Costs Net Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsNetMortgageNotesPayableNet	399000
CY2021Q4	us-gaap	Secured Debt SecuredDebt	2191201000
CY2022Q4	eqr	Historical Cost Net Of Accumulated Depreciation Of Encumbered Properties HistoricalCostNetOfAccumulatedDepreciationOfEncumberedProperties	2500000000
CY2021Q4	eqr	Historical Cost Net Of Accumulated Depreciation Of Encumbered Properties HistoricalCostNetOfAccumulatedDepreciationOfEncumberedProperties	2700000000
CY2022	eqr	Effective Date Of Securities Under Shelf Registration Statement EffectiveDateOfSecuritiesUnderShelfRegistrationStatement	2022-05
CY2022	eqr	Expiry Date Of Securities Remaining Under Shelf Registration Statement ExpiryDateOfSecuritiesRemainingUnderShelfRegistrationStatement	2025-05
CY2022Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	2500000000
CY2021Q4	us-gaap	Marketable Securities MarketableSecurities	0
CY2021Q4	us-gaap	Commercial Paper CommercialPaper	1000000000.0
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	998275000
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	6100000
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	503180000
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	601025000
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	409800000
CY2022Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	4975870000
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	7494250000
CY2022Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	68528000
CY2022Q4	eqr	Total Secured And Unsecured Debt TotalSecuredAndUnsecuredDebt	7425722000
CY2022Q4	us-gaap	Commercial Paper CommercialPaper	130000000.0
CY2022Q4	eqr	Forward Starting Swaps To Hedge Changes In Interest Rates ForwardStartingSwapsToHedgeChangesInInterestRates	450000000.0
CY2022	us-gaap	Debt Instrument Term DebtInstrumentTerm	P10Y
CY2021	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	23400000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1329760000
CY2022Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	155109000
CY2022Q4	us-gaap	Other Liabilities Fair Value Disclosure OtherLiabilitiesFairValueDisclosure	134455000
CY2022Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	318273000
CY2021Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	498977000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	20654000
CY2022	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-11071000
CY2021	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-9394000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-1190000
CY2020	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-35087000
CY2022	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	2500000
CY2021	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	34300000
CY2022Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	3500000
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	806995000
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1396714000
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	962501000
CY2022	us-gaap	Income Loss Attributable To Noncontrolling Interest IncomeLossAttributableToNoncontrollingInterest	26310000
CY2021	us-gaap	Income Loss Attributable To Noncontrolling Interest IncomeLossAttributableToNoncontrollingInterest	45900000
CY2020	us-gaap	Income Loss Attributable To Noncontrolling Interest IncomeLossAttributableToNoncontrollingInterest	34010000
CY2022	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	3774000
CY2021	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	17964000
CY2020	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	14855000
CY2022	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	773821000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	910546000
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	806995000
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1396714000
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	962501000
CY2022	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	3774000
CY2021	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	17964000
CY2020	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	14855000
CY2022	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	800131000
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1375660000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	944556000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	376209000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	373833000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	371791000
CY2022	eqr	Dilutive Op Units DilutiveOpUnits	11836000
CY2021	eqr	Dilutive Op Units DilutiveOpUnits	12263000
CY2020	eqr	Dilutive Op Units DilutiveOpUnits	13003000
CY2022	eqr	Dilutive Securities Options DilutiveSecuritiesOptions	1402000
CY2021	eqr	Dilutive Securities Options DilutiveSecuritiesOptions	1924000
CY2020	eqr	Dilutive Securities Options DilutiveSecuritiesOptions	1080000
CY2022	eqr	At The Market Forward Sales AtTheMarketForwardSales	3000
CY2021	eqr	At The Market Forward Sales AtTheMarketForwardSales	69000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	389450000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	388089000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	385874000
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.06
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.56
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.45
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.05
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.54
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.45
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	8920638
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.217
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.213
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.152
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0326
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0323
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0304
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0166
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0050
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0132
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	91.59
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	67.48
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	83.08
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	12.57
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.96
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.23
CY2022	eqr	Historical Volatility Estimation Period HistoricalVolatilityEstimationPeriod	P5Y
CY2022	eqr	Individual Potential Target Award Minimum IndividualPotentialTargetAwardMinimum	0
CY2022	eqr	Individual Potential Target Award Maximum IndividualPotentialTargetAwardMaximum	2
CY2022	eqr	Share Based Compensation Arrangements By Share Based Payment Award Percent Of Award Target Performance Metric ShareBasedCompensationArrangementsByShareBasedPaymentAwardPercentOfAwardTargetPerformanceMetric	0.50
CY2022Q4	eqr	Percentage Of Dividend Payments PercentageOfDividendPayments	0.10
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	29513000
CY2022	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1510000
CY2022	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	2793000
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	33816000
CY2022	eqr	Share Incentive Plans Dividends Incurred ShareIncentivePlansDividendsIncurred	2159000
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	27810000
CY2021	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1430000
CY2021	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	1038000
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	30278000
CY2021	eqr	Share Incentive Plans Dividends Incurred ShareIncentivePlansDividendsIncurred	2015000
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	23174000
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1527000
CY2020	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	1743000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26444000
CY2020	eqr	Share Incentive Plans Dividends Incurred ShareIncentivePlansDividendsIncurred	3027000
CY2022Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	9500000
CY2022	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y4M17D
CY2022Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	4061360
CY2022	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P4Y10M6D
CY2022Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	62.60
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	6303000
CY2022Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	3549325
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y4M9D
CY2022Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	60.80
CY2022Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	6303000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	506883
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P8Y3M3D
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	75.07
CY2022Q4	eqr	Market Value Of Common Shares MarketValueOfCommonShares	59.00
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3710888
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	58.70
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4985668
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	55.12
CY2022	eqr	Share Based Compensation Arrangement By Share Based Payment Award Value Of Common Shares That Can Be Acquired By Employee And Trustees Under Employees Share Purchase Plan ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfCommonSharesThatCanBeAcquiredByEmployeeAndTrusteesUnderEmployeesSharePurchasePlan	100000
CY2022Q4	eqr	Sharebasedcompensationarrangementbysharebasedpaymentawardnumberofsharesauthorizedafteramendment Sharebasedcompensationarrangementbysharebasedpaymentawardnumberofsharesauthorizedafteramendment	7000000
CY2022Q4	eqr	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Purchase Under Employee Share Purchase Plan ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForPurchaseUnderEmployeeSharePurchasePlan	2486599
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.85
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	66835
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	70702
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	90196
CY2022Q4	eqr	Employee Share Purchase Plan Issuance Price Minimum EmployeeSharePurchasePlanIssuancePriceMinimum	52.33
CY2022Q4	eqr	Employee Share Purchase Plan Issuance Price Maximum EmployeeSharePurchasePlanIssuancePriceMaximum	72.51
CY2021Q4	eqr	Employee Share Purchase Plan Issuance Price Minimum EmployeeSharePurchasePlanIssuancePriceMinimum	53.13
CY2021Q4	eqr	Employee Share Purchase Plan Issuance Price Maximum EmployeeSharePurchasePlanIssuancePriceMaximum	71.04
CY2020Q4	eqr	Employee Share Purchase Plan Issuance Price Minimum EmployeeSharePurchasePlanIssuancePriceMinimum	46.23
CY2020Q4	eqr	Employee Share Purchase Plan Issuance Price Maximum EmployeeSharePurchasePlanIssuancePriceMaximum	63.84
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	4178000
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	4265000
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	4508000
CY2022	eqr	Maximum Eligible Compensation Percentage For Defined Contribution Plan By Employer MaximumEligibleCompensationPercentageForDefinedContributionPlanByEmployer	0.04
CY2022	eqr	Defined Contribution Plan Vesting Period DefinedContributionPlanVestingPeriod	P5Y
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4800000
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4900000
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5200000
CY2014Q3	eqr	Stock Registered During Period Shares Dividend Reinvestment Plan StockRegisteredDuringPeriodSharesDividendReinvestmentPlan	4790000
CY2014Q3	eqr	Stock Registered During Period Shares Dividend Reinvestment Plan StockRegisteredDuringPeriodSharesDividendReinvestmentPlan	4790000
CY2022Q4	eqr	Number Of Shares Available For Issuance NumberOfSharesAvailableForIssuance	4631362
CY2022	us-gaap	Lease Expiration Date1 LeaseExpirationDate1	2032-11-30
CY2022	us-gaap	Lessee Operating Lease Option To Extend LesseeOperatingLeaseOptionToExtend	two five-year
CY2022	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	1700000
CY2021	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	1700000
CY2020	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	2100000
CY2022Q4	eqr	Total Project Costs Remaining TotalProjectCostsRemaining	506000000.0
CY2022	eqr	Equity Method Investment Period EquityMethodInvestmentPeriod	P3Y
CY2022Q4	eqr	Percentage Of Expected Non Recourse Construction Debt PercentageOfExpectedNonRecourseConstructionDebt	0.60
CY2022Q4	eqr	Initial Minimum Co Investment Of Combined Equity InitialMinimumCoInvestmentOfCombinedEquity	750000000.0
CY2022	eqr	Number Of Joint Venture Agreements NumberOfJointVentureAgreements	4
CY2022	eqr	Number Of Real Estate Technology Investment Funds NumberOfRealEstateTechnologyInvestmentFunds	8
CY2022	eqr	Number Of Other Real Estate Investment Funds NumberOfOtherRealEstateInvestmentFunds	1
CY2022Q4	eqr	Real Estate Technology And Other Real Estate Investments Commitment Funds RealEstateTechnologyAndOtherRealEstateInvestmentsCommitmentFunds	19900000
CY2022	eqr	Number Of Deferred Compensation Agreement With Former Executive Officer NumberOfDeferredCompensationAgreementWithFormerExecutiveOfficer	1
CY2022	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	-200000
CY2021	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	100000
CY2020	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	500000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	666000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	767000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	767000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	767000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	767000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	4220000
CY2022Q4	eqr	Defined Benefit Plan Expected Future Benefit Payments DefinedBenefitPlanExpectedFutureBenefitPayments	7954000
CY2022Q4	eqr	Number Of Customer NumberOfCustomer	0
CY2021Q4	eqr	Number Of Customer NumberOfCustomer	0
CY2020Q4	eqr	Number Of Customer NumberOfCustomer	0
CY2022	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	72872
CY2021	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	72872
CY2020	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	74077
CY2021	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	72872
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	28272906000
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	27203325000
CY2019Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	27533607000
CY2022	eqr	Real Estate Acquisitions And Development RealEstateAcquisitionsAndDevelopment	214903000
CY2021	eqr	Real Estate Acquisitions And Development RealEstateAcquisitionsAndDevelopment	1912579000
CY2020	eqr	Real Estate Acquisitions And Development RealEstateAcquisitionsAndDevelopment	298847000
CY2022	us-gaap	Real Estate Improvements RealEstateImprovements	225136000
CY2021	us-gaap	Real Estate Improvements RealEstateImprovements	152715000
CY2020	us-gaap	Real Estate Improvements RealEstateImprovements	154433000
CY2022	eqr	Real Estate Dispositions And Other RealEstateDispositionsAndOther	624191000
CY2021	eqr	Real Estate Dispositions And Other RealEstateDispositionsAndOther	995713000
CY2020	eqr	Real Estate Dispositions And Other RealEstateDispositionsAndOther	783562000
CY2022Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	28088754000
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	28272906000
CY2020Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	27203325000
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	8354282000
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	7859657000
CY2019Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	7276786000
CY2022	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	882168000
CY2021	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	838272000
CY2020	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	820832000
CY2022	eqr	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	208600000
CY2021	eqr	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	343647000
CY2020	eqr	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	237961000
CY2022Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	9027850000
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	8354282000
CY2020Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	7859657000
CY2022Q4	eqr	Land And Depreciable Property Net LandAndDepreciablePropertyNet	12900000000

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$EQR
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2023 Q1 Form 10-K Financial Statement

#000095017023003060 Filed on February 16, 2023

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$EQR EQUITY RESIDENTIAL Stock $eqr

2023 Q1 Form 10-K Financial Statement

#000095017023003060 Filed on February 16, 2023

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$EQR
EQUITY RESIDENTIAL Stock $eqr