$EQR
EQUITY RESIDENTIAL Stock $eqr

$eqr Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000095017024015907 Filed on February 15, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$730.8M	$727.5M	$2.874B
YoY Change	3.65%	3.97%	5.07%
Cost Of Revenue	$279.0M	$252.1M	$1.046B
YoY Change	1.2%	8.97%	6.5%
Gross Profit	$451.8M	$475.4M	$1.827B
YoY Change	5.22%	1.5%	4.27%
Gross Profit Margin	61.82%	65.34%	63.59%
Selling, General & Admin	$15.72M	$11.58M	$60.72M
YoY Change	-2.75%	-0.82%	3.42%
% of Gross Profit	3.48%	2.44%	3.32%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$225.7M	$226.8M	$888.7M
YoY Change	4.57%	5.84%	0.74%
% of Gross Profit	49.95%	47.71%	48.63%
Operating Expenses	$243.6M	$238.4M	$949.4M
YoY Change	4.98%	5.5%	0.91%
Operating Profit	$208.2M	$237.0M	$878.0M
YoY Change	-30.02%	-2.22%	-21.33%
Interest Expense	-$59.80M	-$59.54M	-$256.2M
YoY Change	-10.53%	-15.88%	-11.51%
% of Operating Profit	-28.72%	-25.12%	-29.17%
Other Income/Expense, Net	-$31.74M	-$8.902M	-$29.42M
YoY Change	252.84%	99.02%	115.3%
Pretax Income	$307.0M	$324.1M	$875.0M
YoY Change	38.46%	93.92%	7.64%
Income Tax	$304.0K	$256.0K	$1.148M
% Of Pretax Income	0.1%	0.08%	0.13%
Net Earnings	$295.8M	$310.9M	$832.3M
YoY Change	39.5%	96.48%	7.14%
Net Earnings / Revenue	40.47%	42.74%	28.96%
Basic Earnings Per Share	$0.78		$2.20
Diluted Earnings Per Share	$0.77	$0.80	$2.13
COMMON SHARES
Basic Shares Outstanding	379.6M	379.7M	378.8M
Diluted Shares Outstanding	390.6M		390.9M

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$44.54M	$50.74M	$50.74M
YoY Change	-66.63%	-5.8%	-5.8%
Cash & Equivalents	$44.54M	$50.74M	$50.74M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$44.54M	$50.74M	$50.74M
YoY Change	-66.63%	-5.8%	-5.8%
LONG-TERM ASSETS
Property, Plant & Equipment	$19.18B	$19.36B	$19.36B
YoY Change	-0.92%	-0.84%	-0.84%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$289.3M	$282.0M	$282.0M
YoY Change	-1.03%	1.08%	1.08%
Other Assets	$152.0M	$89.25M	$89.25M
YoY Change	77.55%	7.14%	7.14%
Total Long-Term Assets	$19.85B	$19.98B	$19.98B
YoY Change	-0.59%	-0.9%	-0.9%
TOTAL ASSETS
Total Short-Term Assets	$44.54M	$50.74M	$50.74M
Total Long-Term Assets	$19.85B	$19.98B	$19.98B
Total Assets	$19.89B	$20.03B	$20.03B
YoY Change	-1.03%	-0.91%	-0.91%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$146.1M	$104.4M	$104.4M
YoY Change	0.98%	8.75%	8.75%
Accrued Expenses	$359.6M	$377.4M	$377.4M
YoY Change	-1.38%	0.61%	23.26%
Deferred Revenue
YoY Change
Short-Term Debt	$225.9M	$409.1M	$409.1M
YoY Change		214.83%	214.83%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.064B	$810.2M	$810.2M
YoY Change	27.12%	-11.42%	-4.2%
LONG-TERM LIABILITIES
Long-Term Debt	$6.984B	$7.390B	$7.390B
YoY Change	-4.49%	1.3%	0.35%
Other Long-Term Liabilities	$274.9M	$255.5M	$255.5M
YoY Change	-3.0%	-16.75%	-16.75%
Total Long-Term Liabilities	$7.259B	$7.646B	$7.646B
YoY Change	-4.43%	0.57%	-0.33%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.064B	$810.2M	$810.2M
Total Long-Term Liabilities	$7.259B	$7.646B	$7.646B
Total Liabilities	$8.323B	$8.949B	$8.949B
YoY Change	-1.3%	5.07%	-1.06%
SHAREHOLDERS EQUITY
Retained Earnings	$1.437B	$1.437B
YoY Change	-11.27%	-13.36%
Common Stock	$3.789M	$3.793M
YoY Change	0.0%	0.24%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$11.07B	$11.09B	$11.09B
YoY Change
Total Liabilities & Shareholders Equity	$19.89B	$20.03B	$20.03B
YoY Change	-1.03%	-0.91%	-0.91%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$295.8M	$310.9M	$832.3M
YoY Change	39.5%	96.48%	7.14%
Depreciation, Depletion And Amortization	$225.7M	$226.8M	$888.7M
YoY Change	4.57%	5.84%	0.74%
Cash From Operating Activities	$421.0M	$344.3M	$1.533B
YoY Change	7.06%	2.91%	5.36%
INVESTING ACTIVITIES
Capital Expenditures	$100.4M	$108.0M	$723.9M
YoY Change	37.93%	-0.61%	61.75%
Acquisitions
YoY Change
Other Investing Activities	$236.4M	$166.8M	$314.4M
YoY Change	102.91%	-720.44%	-43.39%
Cash From Investing Activities	$136.0M	$58.85M	-$409.5M
YoY Change	211.06%	-143.42%	-479.9%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$0.00		$3.354M
YoY Change	-100.0%		-1.12%
Cash From Financing Activities	-500.5M	-389.9M	-1.120B
YoY Change	40.94%	112.71%	-37.25%
NET CHANGE
Cash From Operating Activities	421.0M	344.3M	1.533B
Cash From Investing Activities	136.0M	58.85M	-409.5M
Cash From Financing Activities	-500.5M	-389.9M	-1.120B
Net Change In Cash	56.57M	13.27M	2.823M
YoY Change	-30.95%	-15.52%	-101.27%
FREE CASH FLOW
Cash From Operating Activities	$421.0M	$344.3M	$1.533B
Capital Expenditures	$100.4M	$108.0M	$723.9M
Free Cash Flow	$320.6M	$236.3M	$808.9M
YoY Change	0.05%	4.61%	-19.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000906107
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
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CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	1-12252
CY2023	dei	Entity Registrant Name EntityRegistrantName	EQUITY RESIDENTIAL
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3675988
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	Two North Riverside Plaza
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60606
CY2023	dei	City Area Code CityAreaCode	312
CY2023	dei	Local Phone Number LocalPhoneNumber	474-1300
CY2023	dei	Security12b Title Security12bTitle	Common Shares of Beneficial Interest,$0.01 Par Value (Equity Residential)
CY2023	dei	Trading Symbol TradingSymbol	EQR
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	25000000000.0
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	379553591
CY2023	dei	Auditor Firm AuditorFirmId	42
CY2023	dei	Auditor Name AuditorName	Ernst and Young LLP
CY2023	dei	Auditor Location AuditorLocation	Chicago, Illinois, USA
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CY2023Q4	us-gaap	Land Land	5581876000
CY2022Q4	us-gaap	Land Land	5580878000
CY2023Q4	eqr	Depreciable Property DepreciableProperty	22938426000
CY2022Q4	eqr	Depreciable Property DepreciableProperty	22334369000
CY2023Q4	us-gaap	Development In Process DevelopmentInProcess	78036000
CY2022Q4	us-gaap	Development In Process DevelopmentInProcess	112940000
CY2023Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	114300000
CY2022Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	60567000
CY2023Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28712638000
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28088754000
CY2023Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	9810337000
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	9027850000
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	18902301000
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19060904000
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	282049000
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	279024000
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50743000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53869000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	89252000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83303000
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CY2022Q4	eqr	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	462956000
CY2023Q4	us-gaap	Other Assets OtherAssets	252953000
CY2022Q4	us-gaap	Other Assets OtherAssets	278206000
CY2023Q4	us-gaap	Assets Assets	20034564000
CY2022Q4	us-gaap	Assets Assets	20218262000
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CY2022Q4	us-gaap	Secured Debt SecuredDebt	1953438000
CY2023Q4	us-gaap	Notes Payable NotesPayable	5348417000
CY2022Q4	us-gaap	Notes Payable NotesPayable	5342329000
CY2023Q4	eqr	Line Of Credit And Commercial Paper LineOfCreditAndCommercialPaper	409131000
CY2022Q4	eqr	Line Of Credit And Commercial Paper LineOfCreditAndCommercialPaper	129955000
CY2023Q4	eqr	Accounts Payable And Accrued Liabilities Current And Noncurrent Other Than Interest And Dividend Payable AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentOtherThanInterestAndDividendPayable	104430000
CY2022Q4	eqr	Accounts Payable And Accrued Liabilities Current And Noncurrent Other Than Interest And Dividend Payable AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentOtherThanInterestAndDividendPayable	96028000
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CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	306941000
CY2023Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	69178000
CY2022Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	68940000
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	259231000
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	244621000
CY2023Q4	us-gaap	Liabilities Liabilities	8456188000
CY2022Q4	us-gaap	Liabilities Liabilities	8517310000
CY2023Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	289248000
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	318273000
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
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CY2021	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	1072183000
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	16769000
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	1160585000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1116046000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1675841000
CY2023	us-gaap	Interest And Other Income InterestAndOtherIncome	22345000
CY2022	us-gaap	Interest And Other Income InterestAndOtherIncome	2193000
CY2021	us-gaap	Interest And Other Income InterestAndOtherIncome	25666000
CY2023	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	29419000
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	13664000
CY2021	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	19275000
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	269556000
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	282920000
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	272473000
CY2023	eqr	Amortization Of Deferred Financing Costs AmortizationOfDeferredFinancingCosts	8941000
CY2022	eqr	Amortization Of Deferred Financing Costs AmortizationOfDeferredFinancingCosts	8729000
CY2021	eqr	Amortization Of Deferred Financing Costs AmortizationOfDeferredFinancingCosts	8737000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	875014000
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
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1148000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	900000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	915000
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5378000
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5031000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3398000
CY2021	eqr	Gain Loss On Sales Of Land Parcels GainLossOnSalesOfLandParcels	5000
CY2023	us-gaap	Profit Loss ProfitLoss	868488000
CY2022	us-gaap	Profit Loss ProfitLoss	806995000
CY2021	us-gaap	Profit Loss ProfitLoss	1396714000
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	26710000
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	26310000
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	45900000
CY2023	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	6340000
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
CY2023	us-gaap	Net Income Loss NetIncomeLoss	835438000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	776911000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1332850000
CY2023	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3090000
CY2022	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3090000
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3090000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	832348000
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
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.2
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.06
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.56
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	378773000
CY2021	eqr	Operating And Finance Lease Right Of Use Asset Amortization OperatingAndFinanceLeaseRightOfUseAssetAmortization	13266000
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	16769000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	376209000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	373833000
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.2
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.05
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.54
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	390897000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	389450000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	388089000
CY2023	us-gaap	Profit Loss ProfitLoss	868488000
CY2022	us-gaap	Profit Loss ProfitLoss	806995000
CY2021	us-gaap	Profit Loss ProfitLoss	1396714000
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	4514000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	20654000
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-3737000
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
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8251000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	31725000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9394000
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	876739000
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
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	33307000
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
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	843432000
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	807588000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1341925000
CY2023	us-gaap	Profit Loss ProfitLoss	868488000
CY2022	us-gaap	Profit Loss ProfitLoss	806995000
CY2021	us-gaap	Profit Loss ProfitLoss	1396714000
CY2023	us-gaap	Depreciation Depreciation	888709000
CY2022	us-gaap	Depreciation Depreciation	882168000
CY2021	us-gaap	Depreciation Depreciation	838272000
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8941000
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8729000
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	8737000
CY2021	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-154000
CY2023	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	4091000
CY2022	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5004000
CY2021	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5302000
CY2023	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	3725000
CY2022	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	11059000
CY2021	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	9382000
CY2023	eqr	Operating And Finance Lease Right Of Use Asset Amortization OperatingAndFinanceLeaseRightOfUseAssetAmortization	12795000
CY2022	eqr	Operating And Finance Lease Right Of Use Asset Amortization OperatingAndFinanceLeaseRightOfUseAssetAmortization	12157000
CY2023	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	3647000
CY2022	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	4780000
CY2021	us-gaap	Noncash Project Abandonment Costs NoncashProjectAbandonmentCosts	6526000
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5378000
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5031000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3398000
CY2023	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	559000
CY2022	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	398000
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	56000
CY2023	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	282539000
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
CY2021	eqr	Gain Loss On Sales Of Land Parcels GainLossOnSalesOfLandParcels	5000
CY2023	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1504000
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2061000
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	23432000
CY2023	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	13466000
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	31815000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	29513000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	27810000
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	10203000
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10893000
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5906000
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	8911000
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
CY2023	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-594000
CY2022	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-3200000
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	3614000
CY2023	eqr	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-1551000
CY2022	eqr	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-1524000
CY2021	eqr	Increase Decrease In Lease Liabilities IncreaseDecreaseInLeaseLiabilities	-5122000
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5358000
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-13394000
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4286000
CY2023	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	238000
CY2022	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	2799000
CY2021	us-gaap	Increase Decrease In Security Deposits IncreaseDecreaseInSecurityDeposits	5661000
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1532798000
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
CY2023	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	324497000
CY2022	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	113046000
CY2021	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1712131000
CY2023	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	78197000
CY2022	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	109345000
CY2021	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	206421000
CY2023	eqr	Payments For Capital Expenditures To Real Estate PaymentsForCapitalExpendituresToRealEstate	319342000
CY2022	eqr	Payments For Capital Expenditures To Real Estate PaymentsForCapitalExpendituresToRealEstate	221086000
CY2021	eqr	Payments For Capital Expenditures To Real Estate PaymentsForCapitalExpendituresToRealEstate	151019000
CY2023	eqr	Non Real Estate Capital Additions NonRealEstateCapitalAdditions	1851000
CY2022	eqr	Non Real Estate Capital Additions NonRealEstateCapitalAdditions	4050000
CY2021	eqr	Non Real Estate Capital Additions NonRealEstateCapitalAdditions	1696000
CY2023	eqr	Payments Of Interest Capitalized For Real Estate And Unconsolidated Entities Under Development PaymentsOfInterestCapitalizedForRealEstateAndUnconsolidatedEntitiesUnderDevelopment	12347000
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
CY2023	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	374018000
CY2022	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	720302000
CY2021	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	1707747000
CY2023	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	2800000
CY2022	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	49855000
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	48534000
CY2023	eqr	Payments To Acquire Equity Method Investments Development And Other PaymentsToAcquireEquityMethodInvestmentsDevelopmentAndOther	47180000
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
CY2023	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	42000
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
CY2023	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2500000
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2061000
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	168291000
CY2023	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	3042000
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
CY2023	eqr	Proceeds From Consolidation Of Previously Unconsolidated Entities ProceedsFromConsolidationOfPreviouslyUnconsolidatedEntities	2108000
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-409504000
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
CY2023	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4106000
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	9894000
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6446000
CY2023	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	572896000
CY2022	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	48054000
CY2021	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	58428000
CY2023	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	932598000
CY2022	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	286461000
CY2021	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	156815000
CY2023	eqr	Repayments Of Mortgage Notes Payable RepaymentsOfMortgageNotesPayable	3354000
CY2022	eqr	Repayments Of Mortgage Notes Payable RepaymentsOfMortgageNotesPayable	3392000
CY2021	eqr	Repayments Of Mortgage Notes Payable RepaymentsOfMortgageNotesPayable	7465000
CY2021	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	497470000
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	500000000
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	10000000
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	10000000
CY2023	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	6124068000
CY2022	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	6036083000
CY2021	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	7590200000
CY2023	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	5844892000
CY2022	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	6221158000
CY2021	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	7690000000
CY2023	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	-25169000
CY2023	eqr	Finance Ground Lease Principal Payments FinanceGroundLeasePrincipalPayments	2662000
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
CY2023	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	3517000
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
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	23632000
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	25069000
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	85445000
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	49105000
CY2022	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	783000
CY2021	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	428000
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-75000
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-63000
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-63000
CY2023	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	3737000
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	32178000
CY2023	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	9000
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	603000
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	1394000
CY2023	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	1000
CY2022	us-gaap	Proceeds From Partnership Contribution ProceedsFromPartnershipContribution	1000
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	990148000
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	931783000
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	900468000
CY2023	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3090000
CY2022	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	2318000
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3090000
CY2023	us-gaap	Distribution Made To Limited Partner Cash Distributions Paid DistributionMadeToLimitedPartnerCashDistributionsPaid	30253000
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
CY2023	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	5743000
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	18406000
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	5802000
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1120471000
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
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	2823000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-223064000
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-9394000
CY2023	eqr	Write Off Pursuit Costs Investment In Real Estate WriteOffPursuitCostsInvestmentInRealEstate	527000
CY2022	eqr	Write Off Pursuit Costs Investment In Real Estate WriteOffPursuitCostsInvestmentInRealEstate	1150000
CY2021	eqr	Write Off Pursuit Costs Investment In Real Estate WriteOffPursuitCostsInvestmentInRealEstate	5918000
CY2023	eqr	Write Off Of Pursuit Costs Investments In Unconsolidated Entities WriteOffOfPursuitCostsInvestmentsInUnconsolidatedEntities	2186000
CY2022	eqr	Write Off Of Pursuit Costs Investments In Unconsolidated Entities WriteOffOfPursuitCostsInvestmentsInUnconsolidatedEntities	2898000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	260508000
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
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	139995000
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
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50743000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53869000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	123832000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	89252000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83303000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	236404000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	139995000
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
CY2023	us-gaap	Interest Paid Net InterestPaidNet	248990000
CY2022	us-gaap	Interest Paid Net InterestPaidNet	267612000
CY2021	us-gaap	Interest Paid Net InterestPaidNet	252838000
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1091000
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	748000
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1179000
CY2023	eqr	Real Estate Acquisitions Dispositions Other Mortgage Loans Assumed RealEstateAcquisitionsDispositionsOtherMortgageLoansAssumed	42256000
CY2023	eqr	Amortization Of Deferred Financing Costs Investment In Real Estate Net AmortizationOfDeferredFinancingCostsInvestmentInRealEstateNet	211000
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
CY2023	eqr	Amortization Of Deferred Financing Costs Other Assets AmortizationOfDeferredFinancingCostsOtherAssets	2785000
CY2022	eqr	Amortization Of Deferred Financing Costs Other Assets AmortizationOfDeferredFinancingCostsOtherAssets	2768000
CY2021	eqr	Amortization Of Deferred Financing Costs Other Assets AmortizationOfDeferredFinancingCostsOtherAssets	2338000
CY2023	eqr	Amortization Of Deferred Financing Costs Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsMortgageNotesPayableNet	2527000
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
CY2023	eqr	Amortization Of Deferred Financing Costs Notes Net AmortizationOfDeferredFinancingCostsNotesNet	3840000
CY2022	eqr	Amortization Of Deferred Financing Costs Notes Net AmortizationOfDeferredFinancingCostsNotesNet	4387000
CY2021	eqr	Amortization Of Deferred Financing Costs Notes Net AmortizationOfDeferredFinancingCostsNotesNet	4009000
CY2023	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	1843000
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
CY2023	eqr	Amortization Of Discounts And Premiums On Debt Notes Net AmortizationOfDiscountsAndPremiumsOnDebtNotesNet	2248000
CY2022	eqr	Amortization Of Discounts And Premiums On Debt Notes Net AmortizationOfDiscountsAndPremiumsOnDebtNotesNet	2820000
CY2021	eqr	Amortization Of Discounts And Premiums On Debt Notes Net AmortizationOfDiscountsAndPremiumsOnDebtNotesNet	2538000
CY2023	eqr	Amortization Of Deferred Settlements On Derivative Instruments Other Liabilities AmortizationOfDeferredSettlementsOnDerivativeInstrumentsOtherLiabilities	12000
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
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-3737000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-11071000
CY2023	eqr	Write Off Of Pursuit Costs Other Assets WriteOffOfPursuitCostsOtherAssets	934000
CY2022	eqr	Write Off Of Pursuit Costs Other Assets WriteOffOfPursuitCostsOtherAssets	732000
CY2021	eqr	Write Off Of Pursuit Costs Other Assets WriteOffOfPursuitCostsOtherAssets	582000
CY2021	eqr	Write Off Of Pursuit Costs Accounts Payable And Accrued Expenses WriteOffOfPursuitCostsAccountsPayableAndAccruedExpenses	26000
CY2023	eqr	Income Loss From Equity Method Investments Merger IncomeLossFromEquityMethodInvestmentsMerger	4132000
CY2022	eqr	Income Loss From Equity Method Investments Merger IncomeLossFromEquityMethodInvestmentsMerger	3778000
CY2021	eqr	Income Loss From Equity Method Investments Merger IncomeLossFromEquityMethodInvestmentsMerger	2122000
CY2023	eqr	Other Liabilities Loss From Investments In Unconsolidated Entities Merger OtherLiabilitiesLossFromInvestmentsInUnconsolidatedEntitiesMerger	1246000
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
CY2023	eqr	Unrealized Gain Loss On Derivative Instruments Other Assets UnrealizedGainLossOnDerivativeInstrumentsOtherAssets	-3749000
CY2022	eqr	Unrealized Gain Loss On Derivative Instruments Other Assets UnrealizedGainLossOnDerivativeInstrumentsOtherAssets	-21865000
CY2023	eqr	Unrealized Gain Loss On Derivative Instruments Other Liabilities UnrealizedGainLossOnDerivativeInstrumentsOtherLiabilities	-765000
CY2022	eqr	Unrealized Gain Loss On Derivative Instruments Other Liabilities UnrealizedGainLossOnDerivativeInstrumentsOtherLiabilities	1211000
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	4514000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	20654000
CY2023	eqr	Investment In Real Estate Net Under Development InvestmentInRealEstateNetUnderDevelopment	4010000
CY2022	eqr	Investment In Real Estate Net Under Development InvestmentInRealEstateNetUnderDevelopment	2365000
CY2021	eqr	Investment In Real Estate Net Under Development InvestmentInRealEstateNetUnderDevelopment	15318000
CY2023	eqr	Investments In Unconsolidated Entities Under Development InvestmentsInUnconsolidatedEntitiesUnderDevelopment	-8337000
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
CY2023	eqr	Investments In Unconsolidated Entities InvestmentsInUnconsolidatedEntities	45770000
CY2022	eqr	Investments In Unconsolidated Entities InvestmentsInUnconsolidatedEntities	108556000
CY2021	eqr	Investments In Unconsolidated Entities InvestmentsInUnconsolidatedEntities	30642000
CY2023	eqr	Investments In Unconsolidated Entities Other Liabilities InvestmentsInUnconsolidatedEntitiesOtherLiabilities	1410000
CY2022	eqr	Investments In Unconsolidated Entities Other Liabilities InvestmentsInUnconsolidatedEntitiesOtherLiabilities	1290000
CY2021	eqr	Investments In Unconsolidated Entities Other Liabilities InvestmentsInUnconsolidatedEntitiesOtherLiabilities	2010000
CY2023	eqr	Investment In Real Estate Net Under Consolidation Of Previously Unconsolidated Entities InvestmentInRealEstateNetUnderConsolidationOfPreviouslyUnconsolidatedEntities	-50315000
CY2023	eqr	Investments In Unconsolidated Entities Under Consolidation Of Previously Unconsolidated Entities InvestmentsInUnconsolidatedEntitiesUnderConsolidationOfPreviouslyUnconsolidatedEntities	46327000
CY2023	eqr	Accounts Payable And Accrued Expenses Under Consolidation Of Previously Unconsolidated Entities AccountsPayableAndAccruedExpensesUnderConsolidationOfPreviouslyUnconsolidatedEntities	75000
CY2023	eqr	Other Liabilities Under Consolidation Of Previously Unconsolidated Entities OtherLiabilitiesUnderConsolidationOfPreviouslyUnconsolidatedEntities	2000000
CY2023	eqr	Noncontrolling Interests Partially Owned Properties Under Consolidation Of Previously Unconsolidated Entities NoncontrollingInterestsPartiallyOwnedPropertiesUnderConsolidationOfPreviouslyUnconsolidatedEntities	4021000
CY2022	eqr	Debt Financing Costs Other Assets DebtFinancingCostsOtherAssets	9566000
CY2021	eqr	Debt Financing Costs Other Assets DebtFinancingCostsOtherAssets	-229000
CY2023	eqr	Debt Financing Costs Mortgage Notes Payable Net DebtFinancingCostsMortgageNotesPayableNet	4106000
CY2022	eqr	Debt Financing Costs Mortgage Notes Payable Net DebtFinancingCostsMortgageNotesPayableNet	228000
CY2021	eqr	Debt Financing Costs Mortgage Notes Payable Net DebtFinancingCostsMortgageNotesPayableNet	2344000
CY2022	eqr	Debt Financing Costs Notes Net DebtFinancingCostsNotesNet	-100000
CY2021	eqr	Debt Financing Costs Notes Net DebtFinancingCostsNotesNet	-4331000
CY2023	eqr	Proceeds From Payments On Settlement Of Derivative Instruments Other Assets ProceedsFromPaymentsOnSettlementOfDerivativeInstrumentsOtherAssets	25613000
CY2023	eqr	Proceeds From Payments On Settlement Of Derivative Instruments Other Liabilities ProceedsFromPaymentsOnSettlementOfDerivativeInstrumentsOtherLiabilities	-444000
CY2023	eqr	Initial Measurement And Reclassifications Right Of Use Assets InitialMeasurementAndReclassificationsRightOfUseAssets	7105000
CY2022	eqr	Initial Measurement And Reclassifications Right Of Use Assets InitialMeasurementAndReclassificationsRightOfUseAssets	400000
CY2021	eqr	Initial Measurement And Reclassifications Right Of Use Assets InitialMeasurementAndReclassificationsRightOfUseAssets	-11308000
CY2023	eqr	Initial Measurement And Reclassifications Lease Liabilities InitialMeasurementAndReclassificationsLeaseLiabilities	7105000
CY2022	eqr	Initial Measurement And Reclassifications Lease Liabilities InitialMeasurementAndReclassificationsLeaseLiabilities	400000
CY2021	eqr	Initial Measurement And Reclassifications Lease Liabilities InitialMeasurementAndReclassificationsLeaseLiabilities	-11308000
CY2023	eqr	Non Cash Share Distribution From Unconsolidated Entities Investments In Unconsolidated Entities NonCashShareDistributionFromUnconsolidatedEntitiesInvestmentsInUnconsolidatedEntities	636000
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
CY2023	eqr	Non Cash Share Distribution From Unconsolidated Entities Changes In Other Assets NonCashShareDistributionFromUnconsolidatedEntitiesChangesInOtherAssets	-636000
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
CY2023Q4	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
CY2023Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	302
CY2023Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	10
CY2023Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	80191
CY2023Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	302
CY2023Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	80191
CY2023	eqr	Capitalized Costs Development And Renovation CapitalizedCostsDevelopmentAndRenovation	15400000
CY2022	eqr	Capitalized Costs Development And Renovation CapitalizedCostsDevelopmentAndRenovation	15600000
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023	eqr	State And Local Income Franchise And Excise Tax Benefit StateAndLocalIncomeFranchiseAndExciseTaxBenefit	1148000
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
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1148000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	900000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	915000
CY2023	eqr	Tax Treatment Of Dividends And Distributions Ordinary Dividends TaxTreatmentOfDividendsAndDistributionsOrdinaryDividends	1.85676
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
CY2023	eqr	Tax Treatment Of Dividends And Distributions Long Term Capital Gain TaxTreatmentOfDividendsAndDistributionsLongTermCapitalGain	0.57857
CY2022	eqr	Tax Treatment Of Dividends And Distributions Long Term Capital Gain TaxTreatmentOfDividendsAndDistributionsLongTermCapitalGain	0.4285
CY2021	eqr	Tax Treatment Of Dividends And Distributions Long Term Capital Gain TaxTreatmentOfDividendsAndDistributionsLongTermCapitalGain	0.73687
CY2023	eqr	Tax Treatment Of Dividends And Distributions Unrecaptured Section Twelve Hundred And Fifty Gain TaxTreatmentOfDividendsAndDistributionsUnrecapturedSectionTwelveHundredAndFiftyGain	0.17717
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
CY2023	eqr	Tax Treatment Of Dividends And Distributions Per Common Share Or Unit Outstanding TaxTreatmentOfDividendsAndDistributionsPerCommonShareOrUnitOutstanding	2.61250
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
CY2023Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.6625
CY2022Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.625
CY2021Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.6025
CY2023	eqr	Alternative Minimum Tax Preference Adjustment Per Share AlternativeMinimumTaxPreferenceAdjustmentPerShare	0.01
CY2023	eqr	Alternative Minimum Tax Preference Adjustment Disclosed Under Treasury Regulation One Year Amounts Disclosure Per Share AlternativeMinimumTaxPreferenceAdjustmentDisclosedUnderTreasuryRegulationOneYearAmountsDisclosurePerShare	0.04101
CY2023	eqr	Alternative Minimum Tax Preference Adjustment Disclosed Under Treasury Regulation Year Three Amounts Disclosure Per Share AlternativeMinimumTaxPreferenceAdjustmentDisclosedUnderTreasuryRegulationYearThreeAmountsDisclosurePerShare	0.04071
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	372302000
CY2023	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	1013795
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
CY2022	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1740550
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	495690
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	468021
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1710692
CY2023	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	68136
CY2022	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	66835
CY2021	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	70702
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<p style="text-indent:2.267%;font-size:10pt;margin-top:18pt;font-family:Times New Roman;margin-bottom:0;text-align:justify;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Use of Estimates</span></p><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;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>
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	378429708
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	375527195
CY2023	eqr	Restricted Share Grants Net RestrictedShareGrantsNet	148474
CY2022	eqr	Restricted Share Grants Net RestrictedShareGrantsNet	174575
CY2021	eqr	Restricted Share Grants Net RestrictedShareGrantsNet	89593
CY2023	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	864386
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	379291417
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	378429708
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	375527195
CY2022Q4	eqr	Units Outstanding UnitsOutstanding	12429737
CY2021Q4	eqr	Units Outstanding UnitsOutstanding	12659027
CY2020Q4	eqr	Units Outstanding UnitsOutstanding	13858073
CY2023	eqr	Issuance Of Ltips IssuanceOfLtips	165364
CY2022	eqr	Issuance Of Ltips IssuanceOfLtips	223242
CY2021	eqr	Issuance Of Ltips IssuanceOfLtips	155162
CY2023	eqr	Shares Issued During Period Shares Conversion Of Units To Common Shares SharesIssuedDuringPeriodSharesConversionOfUnitsToCommonShares	1013795
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
CY2023Q4	eqr	Units Outstanding UnitsOutstanding	11581306
CY2022Q4	eqr	Units Outstanding UnitsOutstanding	12429737
CY2021Q4	eqr	Units Outstanding UnitsOutstanding	12659027
CY2023Q4	eqr	Common Shares And Units Outstanding CommonSharesAndUnitsOutstanding	390872723
CY2022Q4	eqr	Common Shares And Units Outstanding CommonSharesAndUnitsOutstanding	390859445
CY2021Q4	eqr	Common Shares And Units Outstanding CommonSharesAndUnitsOutstanding	388186222
CY2023Q4	eqr	Units Ownership Interest In Operating Partnership UnitsOwnershipInterestInOperatingPartnership	0.03
CY2022Q4	eqr	Units Ownership Interest In Operating Partnership UnitsOwnershipInterestInOperatingPartnership	0.032
CY2021Q4	eqr	Units Ownership Interest In Operating Partnership UnitsOwnershipInterestInOperatingPartnership	0.033
CY2023Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	289200000
CY2022Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	318300000
CY2022Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	318273000
CY2022Q4	eqr	Redeemable Limited Partners RedeemableLimitedPartners	318273000
CY2021Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	498977000
CY2021Q4	eqr	Redeemable Limited Partners RedeemableLimitedPartners	498977000
CY2020Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	338951000
CY2020Q4	eqr	Redeemable Limited Partners RedeemableLimitedPartners	338951000
CY2023	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-7667000
CY2023	eqr	Limited Partners Change In Redemption Value LimitedPartnersChangeInRedemptionValue	-7667000
CY2022	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-176490000
CY2022	eqr	Limited Partners Change In Redemption Value LimitedPartnersChangeInRedemptionValue	-176490000
CY2021	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	158598000
CY2021	eqr	Limited Partners Change In Redemption Value LimitedPartnersChangeInRedemptionValue	158598000
CY2023	eqr	Minority Interest Change In Carrying Value MinorityInterestChangeInCarryingValue	-21358000
CY2023	eqr	Limited Partners Change In Carrying Value LimitedPartnersChangeInCarryingValue	-21358000
CY2022	eqr	Minority Interest Change In Carrying Value MinorityInterestChangeInCarryingValue	-4214000
CY2022	eqr	Limited Partners Change In Carrying Value LimitedPartnersChangeInCarryingValue	-4214000
CY2021	eqr	Minority Interest Change In Carrying Value MinorityInterestChangeInCarryingValue	1428000
CY2021	eqr	Limited Partners Change In Carrying Value LimitedPartnersChangeInCarryingValue	1428000
CY2023Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	289248000
CY2023Q4	eqr	Redeemable Limited Partners RedeemableLimitedPartners	289248000
CY2022Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	318273000
CY2022Q4	eqr	Redeemable Limited Partners RedeemableLimitedPartners	318273000
CY2021Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	498977000
CY2021Q4	eqr	Redeemable Limited Partners RedeemableLimitedPartners	498977000
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q4	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
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000
CY2023	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	49100000
CY2023	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	864386
CY2023Q4	eqr	Repurchase Of Stock Weighted Average Price Per Share RepurchaseOfStockWeightedAveragePricePerShare	56.79
CY2023Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	12135614
CY2023	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	0.03
CY2023Q4	us-gaap	Land Land	5581876000
CY2022Q4	us-gaap	Land Land	5580878000
CY2023Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	19809432000
CY2022Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	19471503000
CY2023Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	2609600000
CY2022Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	2352050000
CY2023Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	519394000
CY2022Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	510816000
CY2023Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28712638000
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	28088754000
CY2023Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	9810337000
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	9027850000
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	18902301000
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19060904000
CY2023	eqr	Properties Acquired PropertiesAcquired	4
CY2023	eqr	Payments To Acquired Interest In Consolidated Operating Property PaymentsToAcquiredInterestInConsolidatedOperatingProperty	4600000
CY2023	eqr	Property Units Acquired PropertyUnitsAcquired	1183
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	366334000
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Land BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand	41142000
CY2023Q4	eqr	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Depreciable Property BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepreciableProperty	325611000
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
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Land BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand	25361000
CY2022Q4	eqr	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Depreciable Property BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepreciableProperty	87685000
CY2023	eqr	Disposed Properties DisposedProperties	11
CY2023	eqr	Disposed Units DisposedUnits	912
CY2023	eqr	Proceeds From Sale Of Property ProceedsFromSaleOfProperty	379893000
CY2023	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	282539000
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	304325000
CY2023Q4	eqr	Properties Contracted To Be Disposed PropertiesContractedToBeDisposed	2
CY2023Q4	eqr	Units Contracted To Be Disposed UnitsContractedToBeDisposed	300
CY2023Q4	eqr	Sales Price For Commitments To Dispose SalesPriceForCommitmentsToDispose	80000000
CY2023Q4	us-gaap	Sale Leaseback Transaction Net Book Value SaleLeasebackTransactionNetBookValue	70533000
CY2023Q4	eqr	Number Of Projects NumberOfProjects	1
CY2023	eqr	Closure Funding Amount ClosureFundingAmount	0
CY2022	eqr	Payments To Acquired Interest In Consolidated Operating Property PaymentsToAcquiredInterestInConsolidatedOperatingProperty	32200000
CY2023Q4	us-gaap	Equity Method Investments EquityMethodInvestments	282049000
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	279024000
CY2023Q4	eqr	Real Estate Tax And Insurance RealEstateTaxAndInsurance	307000
CY2023Q4	us-gaap	Debt Instrument Cumulative Sinking Fund Payments DebtInstrumentCumulativeSinkingFundPayments	29270000
CY2022Q4	us-gaap	Debt Instrument Cumulative Sinking Fund Payments DebtInstrumentCumulativeSinkingFundPayments	25304000
CY2023Q4	eqr	Escrow Deposits For Mortgage And Replacement Reserves EscrowDepositsForMortgageAndReplacementReserves	29577000
CY2022Q4	eqr	Escrow Deposits For Mortgage And Replacement Reserves EscrowDepositsForMortgageAndReplacementReserves	25304000
CY2023Q4	eqr	Earnest Money On Pending Acquisitions EarnestMoneyOnPendingAcquisitions	524000
CY2022Q4	eqr	Earnest Money On Pending Acquisitions EarnestMoneyOnPendingAcquisitions	4500000
CY2023Q4	eqr	Restricted Deposits On Real Estate Investments RestrictedDepositsOnRealEstateInvestments	2181000
CY2022Q4	eqr	Restricted Deposits On Real Estate Investments RestrictedDepositsOnRealEstateInvestments	229000
CY2023Q4	eqr	Resident Security And Utility Deposits ResidentSecurityAndUtilityDeposits	40149000
CY2022Q4	eqr	Resident Security And Utility Deposits ResidentSecurityAndUtilityDeposits	38432000
CY2023Q4	us-gaap	Replacement Reserve Escrow ReplacementReserveEscrow	15571000
CY2022Q4	us-gaap	Replacement Reserve Escrow ReplacementReserveEscrow	12549000
CY2023Q4	eqr	Other Restricted Cash OtherRestrictedCash	1250000
CY2022Q4	eqr	Other Restricted Cash OtherRestrictedCash	2289000
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	59675000
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	57999000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	89252000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	83303000
CY2023	eqr	Operating Lease Lease Income Loss OperatingLeaseLeaseIncomeLoss	2747585000
CY2022	eqr	Operating Lease Lease Income Loss OperatingLeaseLeaseIncomeLoss	2623559000
CY2021	eqr	Operating Lease Lease Income Loss OperatingLeaseLeaseIncomeLoss	2366594000
CY2023	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2873964000
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2735180000
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2463997000
CY2023	eqr	Write Off Of Straight Line Receivables WriteOffOfStraightLineReceivables	1500000
CY2023	eqr	Operating Lease Lease Income Bad Debt Net From Resident Payments OperatingLeaseLeaseIncomeBadDebtNetFromResidentPayments	2800000
CY2022	eqr	Operating Lease Lease Income Bad Debt Net From Resident Payments OperatingLeaseLeaseIncomeBadDebtNetFromResidentPayments	34700000
CY2021	eqr	Operating Lease Lease Income Bad Debt Net From Resident Payments OperatingLeaseLeaseIncomeBadDebtNetFromResidentPayments	34800000
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	457266000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	462956000
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	311640000
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	308748000
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	7100000
CY2023	eqr	Finance Lease Right Of Use Asset Amortization Capitalized FinanceLeaseRightOfUseAssetAmortizationCapitalized	146000
CY2022	eqr	Finance Lease Right Of Use Asset Amortization Capitalized FinanceLeaseRightOfUseAssetAmortizationCapitalized	351000
CY2021	eqr	Finance Lease Right Of Use Asset Amortization Capitalized FinanceLeaseRightOfUseAssetAmortizationCapitalized	351000
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1781000
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
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1886000
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1904000
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1464000
CY2023	us-gaap	Lease Cost LeaseCost	31826000
CY2022	us-gaap	Lease Cost LeaseCost	30817000
CY2021	us-gaap	Lease Cost LeaseCost	29587000
CY2021	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	383000
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2847000
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2463000
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1898000
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P23Y1M6D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P24Y1M6D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P25Y2M12D
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.028
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
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2881000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2946000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2959000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	2971000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	2984000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	82253000
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	96994000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15797000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	16028000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	15881000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	15984000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	16132000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	806155000
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	885977000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	53000000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	48410000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	44582000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	40771000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	34709000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	112720000
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	334192000
CY2023Q4	eqr	Lessee Operating And Financing Lease Liability Payments Due LesseeOperatingAndFinancingLeaseLiabilityPaymentsDue	982971000
CY2023Q4	eqr	Lessee Operating And Financing Lease Liability Undiscounted Excess Amount LesseeOperatingAndFinancingLeaseLiabilityUndiscountedExcessAmount	671331000
CY2023Q4	eqr	Operating And Financing Lease Liability OperatingAndFinancingLeaseLiability	311640000
CY2022Q4	us-gaap	Secured Debt SecuredDebt	1953438000
CY2023	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	572896000
CY2023	eqr	Mortgage Notes Payable Assumptions MortgageNotesPayableAssumptions	42256000
CY2023	eqr	Mortgage Notes Payable Lump Sum Pay Offs MortgageNotesPayableLumpSumPayOffs	932598000
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3354000
CY2023	eqr	Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable AmortizationOfDiscountsAndPremiumsOnDebtMortgageNotesPayable	1843000
CY2023	eqr	Amortization Of Deferred Financing Costs Net Mortgage Notes Payable Net AmortizationOfDeferredFinancingCostsNetMortgageNotesPayableNet	-1579000
CY2023Q4	us-gaap	Secured Debt SecuredDebt	1632902000
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
CY2023Q4	eqr	Historical Cost Net Of Accumulated Depreciation Of Encumbered Properties HistoricalCostNetOfAccumulatedDepreciationOfEncumberedProperties	2100000000
CY2022Q4	eqr	Historical Cost Net Of Accumulated Depreciation Of Encumbered Properties HistoricalCostNetOfAccumulatedDepreciationOfEncumberedProperties	2500000000
CY2023	eqr	Effective Date Of Securities Under Shelf Registration Statement EffectiveDateOfSecuritiesUnderShelfRegistrationStatement	2022-05
CY2023	eqr	Expiry Date Of Securities Remaining Under Shelf Registration Statement ExpiryDateOfSecuritiesRemainingUnderShelfRegistrationStatement	2025-05
CY2022Q4	us-gaap	Commercial Paper CommercialPaper	1000000000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	416200000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	458100000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	601025000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	409800000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	910700000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	4668832000
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	7464657000
CY2023Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	74207000
CY2023Q4	eqr	Total Secured And Unsecured Debt TotalSecuredAndUnsecuredDebt	7390450000
CY2023Q4	us-gaap	Commercial Paper CommercialPaper	410000000
CY2023Q4	eqr	Redeemable Noncontrolling Interests Operating Partnership RedeemableNoncontrollingInterestsOperatingPartnership	289248000
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
CY2023	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	4514000
CY2023	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-3737000
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
CY2023	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	-5700000
CY2022	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	2500000
CY2023Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	2300000
CY2023	eqr	Number Of Forward Starting Swaps Settled NumberOfForwardStartingSwapsSettled	9
CY2023	us-gaap	Proceeds From Sale And Maturity Of Trading Securities Heldforinvestment ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment	2500000
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1600000
CY2023	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	13500000
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	23400000
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	868488000
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
CY2023	us-gaap	Income Loss Attributable To Noncontrolling Interest IncomeLossAttributableToNoncontrollingInterest	26710000
CY2022	us-gaap	Income Loss Attributable To Noncontrolling Interest IncomeLossAttributableToNoncontrollingInterest	26310000
CY2021	us-gaap	Income Loss Attributable To Noncontrolling Interest IncomeLossAttributableToNoncontrollingInterest	45900000
CY2023	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	6340000
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
CY2023	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2022	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	832348000
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
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	868488000
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
CY2023	eqr	Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties	6340000
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
CY2023	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2022	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3090000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	859058000
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
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	378773000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	376209000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	373833000
CY2023	eqr	Dilutive Op Units DilutiveOpUnits	11181000
CY2022	eqr	Dilutive Op Units DilutiveOpUnits	11836000
CY2021	eqr	Dilutive Op Units DilutiveOpUnits	12263000
CY2023	eqr	Dilutive Securities Options DilutiveSecuritiesOptions	943000
CY2022	eqr	Dilutive Securities Options DilutiveSecuritiesOptions	1402000
CY2021	eqr	Dilutive Securities Options DilutiveSecuritiesOptions	1924000
CY2022	eqr	At The Market Forward Sales AtTheMarketForwardSales	3000
CY2021	eqr	At The Market Forward Sales AtTheMarketForwardSales	69000
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	390897000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	389450000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	388089000
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.2
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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
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	12.67
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
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CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31815000
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CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	34188000
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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
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CY2023	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y4M2D
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CY2023	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P4Y9M21D
CY2023Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	64.76
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CY2023Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	3342785
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y1M13D
CY2023Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	63.83
CY2023Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2889000
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	611238
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P8Y6M14D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	69.8
CY2023Q4	eqr	Market Value Of Common Shares MarketValueOfCommonShares	61.16
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3549325
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	60.8
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	58.7
CY2023	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
CY2023Q4	eqr	Sharebasedcompensationarrangementbysharebasedpaymentawardnumberofsharesauthorizedafteramendment Sharebasedcompensationarrangementbysharebasedpaymentawardnumberofsharesauthorizedafteramendment	7000000
CY2023Q4	eqr	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Purchase Under Employee Share Purchase Plan ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForPurchaseUnderEmployeeSharePurchasePlan	2418463
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.85
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	68136
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
CY2023Q4	eqr	Employee Share Purchase Plan Issuance Price Minimum EmployeeSharePurchasePlanIssuancePriceMinimum	47.97
CY2023Q4	eqr	Employee Share Purchase Plan Issuance Price Maximum EmployeeSharePurchasePlanIssuancePriceMaximum	55.11
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
CY2023	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans	3517000
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
CY2023	eqr	Maximum Eligible Compensation Percentage For Defined Contribution Plan By Employer MaximumEligibleCompensationPercentageForDefinedContributionPlanByEmployer	0.04
CY2023	eqr	Defined Contribution Plan Vesting Period DefinedContributionPlanVestingPeriod	P5Y
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5200000
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4800000
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4900000
CY2014Q3	eqr	Stock Registered During Period Shares Dividend Reinvestment Plan StockRegisteredDuringPeriodSharesDividendReinvestmentPlan	4790000
CY2014Q3	eqr	Stock Registered During Period Shares Dividend Reinvestment Plan StockRegisteredDuringPeriodSharesDividendReinvestmentPlan	4790000
CY2023Q4	eqr	Number Of Shares Available For Issuance NumberOfSharesAvailableForIssuance	4619250
CY2023	us-gaap	Lease Expiration Date1 LeaseExpirationDate1	2032-11-30
CY2023	us-gaap	Lessee Operating Lease Option To Extend LesseeOperatingLeaseOptionToExtend	two five-year
CY2023Q4	eqr	Total Project Costs Remaining TotalProjectCostsRemaining	219500000
CY2023	eqr	Number Of Real Estate Investment Funds NumberOfRealEstateInvestmentFunds	10
CY2023Q4	us-gaap	Real Estate Investments RealEstateInvestments	38800000
CY2023Q4	eqr	Real Estate Technology And Other Real Estate Investments Commitment Funds RealEstateTechnologyAndOtherRealEstateInvestmentsCommitmentFunds	19200000
CY2023	eqr	Number Of Deferred Compensation Agreement With Former Executive Officer NumberOfDeferredCompensationAgreementWithFormerExecutiveOfficer	1
CY2023	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	600000
CY2022	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	-200000
CY2021	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	100000
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	840000
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	840000
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	840000
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	840000
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	840000
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	3778000
CY2023Q4	eqr	Defined Benefit Plan Expected Future Benefit Payments DefinedBenefitPlanExpectedFutureBenefitPayments	7978000
CY2022Q4	eqr	Number Of Customer NumberOfCustomer	0
CY2021Q4	eqr	Number Of Customer NumberOfCustomer	0
CY2023Q4	eqr	Number Of Customer NumberOfCustomer	0
CY2023	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2873964000
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2735180000
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2463997000
CY2023	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	514575000
CY2022	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	483865000
CY2021	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	453532000
CY2023	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	412114000
CY2022	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	388412000
CY2021	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	397105000
CY2023	us-gaap	Operating Expenses OperatingExpenses	926689000
CY2022	us-gaap	Operating Expenses OperatingExpenses	872277000
CY2021	us-gaap	Operating Expenses OperatingExpenses	850637000
CY2023	eqr	Net Operating Income Loss From Rental Real Estate NetOperatingIncomeLossFromRentalRealEstate	1947275000
CY2022	eqr	Net Operating Income Loss From Rental Real Estate NetOperatingIncomeLossFromRentalRealEstate	1862903000
CY2021	eqr	Net Operating Income Loss From Rental Real Estate NetOperatingIncomeLossFromRentalRealEstate	1613360000
CY2023	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2873964000
CY2023	us-gaap	Operating Expenses OperatingExpenses	926689000
CY2023	eqr	Net Operating Income Loss From Rental Real Estate NetOperatingIncomeLossFromRentalRealEstate	1947275000
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2735180000
CY2022	us-gaap	Operating Expenses OperatingExpenses	872277000
CY2022	eqr	Net Operating Income Loss From Rental Real Estate NetOperatingIncomeLossFromRentalRealEstate	1862903000
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2463997000
CY2021	us-gaap	Operating Expenses OperatingExpenses	850637000
CY2021	eqr	Net Operating Income Loss From Rental Real Estate NetOperatingIncomeLossFromRentalRealEstate	1613360000
CY2022	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	76297
CY2023	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	76297
CY2021	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	72872
CY2023Q4	us-gaap	Assets Assets	20034564000
CY2023	eqr	Payments To Proceeds From Acquire Other Property Plant And Equipment PaymentsToProceedsFromAcquireOtherPropertyPlantAndEquipment	319342000
CY2022Q4	us-gaap	Assets Assets	20218262000
CY2022	eqr	Payments To Proceeds From Acquire Other Property Plant And Equipment PaymentsToProceedsFromAcquireOtherPropertyPlantAndEquipment	221086000
CY2022	eqr	Number Of Units In Same Store Properties NumberOfUnitsInSameStoreProperties	76297
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
CY2023	eqr	Real Estate Acquisitions And Development RealEstateAcquisitionsAndDevelopment	500221000
CY2022	eqr	Real Estate Acquisitions And Development RealEstateAcquisitionsAndDevelopment	214903000
CY2021	eqr	Real Estate Acquisitions And Development RealEstateAcquisitionsAndDevelopment	1912579000
CY2023	us-gaap	Real Estate Improvements RealEstateImprovements	321082000
CY2022	us-gaap	Real Estate Improvements RealEstateImprovements	225136000
CY2021	us-gaap	Real Estate Improvements RealEstateImprovements	152715000
CY2023	eqr	Real Estate Dispositions And Other RealEstateDispositionsAndOther	197419000
CY2022	eqr	Real Estate Dispositions And Other RealEstateDispositionsAndOther	624191000
CY2021	eqr	Real Estate Dispositions And Other RealEstateDispositionsAndOther	995713000
CY2023Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	28712638000
CY2022Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	28088754000
CY2021Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	28272906000
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
CY2023	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	888709000
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
CY2023	eqr	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	106222000
CY2022	eqr	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	208600000
CY2021	eqr	Real Estate Accumulated Depreciation Dispositions And Other RealEstateAccumulatedDepreciationDispositionsAndOther	343647000
CY2023Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	9810337000
CY2022Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	9027850000
CY2021Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	8354282000
CY2023Q4	eqr	Land And Depreciable Property Net LandAndDepreciablePropertyNet	12700000000

Files In Submission

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$EQR
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2024 Q1 Form 10-K Financial Statement

#000095017024015907 Filed on February 15, 2024

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$EQR EQUITY RESIDENTIAL Stock $eqr

2024 Q1 Form 10-K Financial Statement

#000095017024015907 Filed on February 15, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EQR
EQUITY RESIDENTIAL Stock $eqr