75000 - Document - Document and Entity Information
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75010 - Statement - CONSOLIDATED BALANCE SHEETS (Unaudited)
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75020 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited)
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75030 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
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75040 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)
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75050 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)
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75060 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited)
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75070 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical)
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75080 - Statement - CONSOLIDATED BALANCE SHEETS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited)
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75090 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited)
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75100 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited)
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75110 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited)
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75120 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited)
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75130 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL OF ERP OPERATING LIMITED PARTNERSHIP (Parenthetical)
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995455 - Disclosure - Business
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995465 - Disclosure - Summary of Significant Accounting Policies
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995475 - Disclosure - Equity, Capital and Other Interests
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995485 - Disclosure - Real Estate
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995495 - Disclosure - Commitments to Acquire/Dispose of Real Estate
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995505 - Disclosure - Investments in Partially Owned Entities
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995515 - Disclosure - Restricted Deposits
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995525 - Disclosure - Leases
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995535 - Disclosure - Debt
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995545 - Disclosure - Fair Value Measurements
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995555 - Disclosure - Earnings Per Share and Earnings Per Unit
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995565 - Disclosure - Commitments and Contingencies
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995575 - Disclosure - Reportable Segments
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995585 - Disclosure - Subsequent Events
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995595 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995605 - Disclosure - Business (Tables)
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995615 - Disclosure - Equity, Capital and Other Interests (Tables)
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995625 - Disclosure - Real Estate (Tables)
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995635 - Disclosure - Investments in Partially Owned Entities (Tables)
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995645 - Disclosure - Restricted Deposits (Tables)
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995655 - Disclosure - Leases (Tables)
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995665 - Disclosure - Debt (Tables)
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995675 - Disclosure - Fair Value Measurements (Tables)
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995685 - Disclosure - Earnings Per Share and Earnings Per Unit (Tables)
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995695 - Disclosure - Commitments and Contingencies (Tables)
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995705 - Disclosure - Reportable Segments (Tables)
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995715 - Disclosure - Subsequent Events (Tables)
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995725 - Disclosure - Business - Additional Information (Details)
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995735 - Disclosure - Business - Ownership Breakdown (Details)
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995745 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995755 - Disclosure - Equity, Capital and Other Interests - Changes in Company's Issued and Outstanding Common Shares and Units (Details)
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995765 - Disclosure - Equity, Capital and Other Interests - Changes in Operating Partnership's Issued and Outstanding General Partner Units and Limited Partner Units (Details)
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995775 - Disclosure - Equity, Capital and Other Interests - Additional Information (Details)
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995785 - Disclosure - Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership (Details)
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995795 - Disclosure - Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership (Parenthetical) (Details)
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995805 - Disclosure - Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Limited Partners Interest (Details)
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995815 - Disclosure - Equity, Capital and Other Interests - Changes in Redemption Value of Redeemable Limited Partners Interest (Parenthetical) (Details)
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995825 - Disclosure - Equity, Capital and Other Interests - Issued and Outstanding Preferred Shares and Preference Units (Details)
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995835 - Disclosure - Equity, Capital and Other Interests - Issued and Outstanding Preferred Shares and Preference Units (Parenthetical) (Details)
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995845 - Disclosure - Equity, Capital and Other Interests - Other - Additional Information (Details)
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995855 - Disclosure - Real Estate - Summary of Carrying Amounts of Investment in Real Estate (Details)
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995865 - Disclosure - Real Estate - Disposed Properties to Unaffiliated Parties (Details)
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995875 - Disclosure - Commitments to Acquire/Dispose of Real Estate - Summary of Acquired from Unaffiliated Parties (Details)
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995885 - Disclosure - Commitments to Acquire/Dispose of Real Estate - Summary of Separate Agreements to Dispose (Details)
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995895 - Disclosure - Investments in Partially Owned Entities - Summary of Company's Consolidated Joint Ventures (Details)
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995905 - Disclosure - Investments in Partially Owned Entities - Summary of Company's Consolidated Joint Ventures (Parenthetical) (Details)
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995915 - Disclosure - Investments in Partially Owned Entities - Summary of Consolidated Assets and Liabilities Related to the Company's VIEs (Details)
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995925 - Disclosure - Investments in Partially Owned Entities - Summary of Company's Investment in Unconsolidated Entities (Details)
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995935 - Disclosure - Investments in Partially Owned Entities - Summary of Company's Unconsolidated Real Estate Joint Ventures Deemed to be VIEs (Details)
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995945 - Disclosure - Investments in Partially Owned Entities - Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs (Parenthetical) (Details)
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995955 - Disclosure - Investments in Partially Owned Entities - Additional Information (Details)
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995965 - Disclosure - Restricted Deposits - Restricted Deposits (Details)
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995975 - Disclosure - Leases - Summary of Lease Income Types Relating to Lease Payments Along With the Total Other Rental Income (Details)
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995985 - Disclosure - Leases - Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances (Parenthetical) (Details)
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995995 - Disclosure - Leases - Summary of Residential Bad Debt for Company's Properties (Details)
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996005 - Disclosure - Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Details)
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996015 - Disclosure - Debt - Mortgage Notes Payable - Summary of Mortgage Notes Payable Activity (Parenthetical) (Details)
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996025 - Disclosure - Debt - Mortgage Notes Payable - Summary of Certain Interest Rate and Maturity Date Information (Details)
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996035 - Disclosure - Debt - Mortgage Notes Payable - Additional Information (Details)
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996045 - Disclosure - Debt - Notes - Summary of Notes Activity (Details)
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996055 - Disclosure - Debt - Notes - Summary of Notes Activity (Parenthetical) (Details)
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996065 - Disclosure - Debt - Notes - Summary of Certain Interest Rate and Maturity Date Information (Details)
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996075 - Disclosure - Debt - Line of Credit and Commercial Paper - Additional Information (Details)
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996085 - Disclosure - Debt - Line of Credit and Commercial Paper - Summary of Certain Weighted Average Interest Rate, Maturity and Amount Outstanding Information for the Commercial Paper Program (Details)
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996095 - Disclosure - Debt - Line of Credit and Commercial Paper - Schedule of Unsecured Revolving Credit Facility (Details)
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996105 - Disclosure - Fair Value Measurements - Summary of Valuations for Each Type of Fair Value Measurement (Details)
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996115 - Disclosure - Fair Value Measurements - Summary of Carrying and Fair Values of Financial Instruments (Details)
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996125 - Disclosure - Fair Value Measurements - Summarizes Company's Consolidated Derivative Instruments (Details)
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996135 - Disclosure - Fair Value Measurements - Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)
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996145 - Disclosure - Fair Value Measurements - Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) 2
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996155 - Disclosure - Fair Value Measurements - Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income (Details)
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996165 - Disclosure - Fair Value Measurements - Additional Information (Details)
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996175 - Disclosure - Fair Value Measurements - Summary of Real Estate Technology Investment Securities included in Other Assets (Details)
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996175 - Disclosure - Fair Value Measurements - Summary of Real Estate Technology Investment Securities included in Other Assets (Details) [Default]
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996185 - Disclosure - Earnings Per Share and Earnings Per Unit - Computation of Net Income per Share Basic and Net Income per Share Diluted (Details)
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996195 - Disclosure - Earnings Per Share and Earnings Per Unit - Computation of Net Income per Share Basic and Net Income per Share Diluted (Details) 2
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996205 - Disclosure - Earnings Per Share and Earnings Per Unit - Computation of Net Income per Unit Basic and Net Income per Unit Diluted for Operating Partnership (Details)
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996215 - Disclosure - Commitments and Contingencies - Summary of Real Estate Development Commitments (Details)
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996225 - Disclosure - Commitments and Contingencies - Summary of Real Estate Development Commitments (Parenthetical) (Details)
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996235 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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996235 - Disclosure - Commitments and Contingencies - Additional Information (Details) [Default]
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996245 - Disclosure - Reportable Segments - Additional Information (Details)
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996255 - Disclosure - Reportable Segments - Schedule of Reconciliation of Net Income Per Consolidated Statements of Operations to NOI (Details)
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996265 - Disclosure - Reportable Segments - NOI from Our Rental Real Estate for Continuing Operations (Details)
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996275 - Disclosure - Reportable Segments - NOI from Our Rental Real Estate for Each Segment Specific to Continuing Operations (Parenthetical) (Details)
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996285 - Disclosure - Reportable Segments - Schedule of Reconciliation of Operating Expenses (Details)
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996295 - Disclosure - Reportable Segments - Schedule of Reconciliation of Operating Expenses (Parenthetical) (Details)
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996305 - Disclosure - Reportable Segments - Schedule of Reconciliation of Total Assets and Capital Expenditures (Details)
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996315 - Disclosure - Reportable Segments - Schedule of Reconciliation of Total Assets and Capital Expenditures (Parenthetical) (Details)
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Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Summary of Fair Value Measurements for Each Major Category of Assets and Liabilities Measured at Fair Value on Recurring Basis
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Revenue, Product and Service [Extensible Enumeration]
Type of Revenue [Extensible List]
Proceeds from Sale and Maturity of Marketable Securities
Proceeds from sale of investment securities
Security Deposits Under Consolidation Of Previously Unconsolidated Entities
Security deposits under consolidation of previously unconsolidated entities.
Security deposits
Preferred Stock, Shares Issued
Preferred Stock, Shares Issued
Debt Disclosure [Text Block]
Debt
Interest Expense, Total
Interest Expense, Operating and Nonoperating
Interest expense
Redeemable Noncontrolling Interest [Table Text Block]
Changes in Redemption Value of Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners
Long-Term Line of Credit
Revolving credit facility
Unsecured revolving credit facility balance outstanding
Long-Term Line of Credit, Total
The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the mortgage notes payable during the period.
Amortization Of Discounts And Premiums On Debt Mortgage Notes Payable
Mortgage notes payable, net
Amortization of premiums/ discounts
Debt Instrument, Basis Spread on Variable Rate
Debt instrument, basis spread on variable rate
Variable rate
Other liabilities
Other liabilities
The increases (decreases) in the market value of derivative instruments designated and qualifying as cash flow hedging instruments that was recognized in other liabilities during the current period.
Unrealized Gain Loss On Derivative Instruments Other Liabilities
Commitments and Contingencies
Commitments and contingencies
Weighted Average Number of Shares Outstanding, Diluted
Weighted average Common Shares outstanding
Denominator for net income per share – diluted
Weighted average Units outstanding
Carrying value as of the balance sheet date of obligations incurred and payable pertaining to goods and services received from vendors, are incurred in connection with contractual obligations or accumulate over time and for which invoices have not yet been received or will not be rendered.
Accounts Payable And Accrued Liabilities Current And Noncurrent Other Than Interest And Dividend Payable
Accounts payable and accrued expenses
Repurchased and retired
Repurchased and retired
Stock Repurchased During Period, Shares
Summary of Company's Unconsolidated Real Estate Joint Ventures Deemed to be VIEs
Schedule Of Unconsolidated Real Estate Joint Venture Variable Interest Entity Table [Text Block]
Schedule of unconsolidated real estate joint venture variable interest entity table.
Number of consolidated projects in various stages of development.
Number Of Consolidated Projects In Various Stages Of Development
Number of consolidated projects in various stages of development
Minimum [Member]
Minimum [Member]
Payments to acquire equity method investments other.
Payments To Acquire Equity Method Investments Other
Investments in unconsolidated entities – development/other
The value of other liabilities assumed by the Company for investments in unconsolidated entities during the reporting period.
Investments In Unconsolidated Entities Other Liabilities
Other liabilities
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding, Ending Balance
Debt financing costs notes net.
Debt Financing Costs Notes Net
Notes, net
Amount of amortization of other deferred financing costs associated with notes, net.
Amortization Of Deferred Financing Costs Notes Net
Notes, net
Investment, Name [Axis]
Investment, Name
Amount of amortization of other deferred financing costs associated with notes payable, net.
Amortization Of Deferred Financing Costs Notes Payable Net
Amortization of deferred financing costs, net
Payments of Ordinary Dividends, Common Stock
Common Shares
OP Units – General Partner
Change in book value of Redeemable Limited Partners
Change in Book Value of Redeemable Limited Partners
Represents the change in the proportional relationship between the book values of Redeemable Limited Partners relative to that of Limited Partners.
Land Held For Development [Member]
Land held for development.
Land Held For Development [Member]
Partially Owned Properties - Unconsolidated
Unconsolidated Properties [Member]
Repayment of future note
Repayment of future note.
Summary of significant accounting policies.
Summary Of Significant Accounting Policies [Abstract]
Projects under development.
Projects Under Development [Member]
Projects Under Development [Member]
Payments to (Proceeds from) acquire other property plant and equipment.
Payments To Proceeds From Acquire Other Property Plant And Equipment
Capital expenditures
Consolidated Entities [Domain]
Consolidated Entities
Common Stock, Shares, Issued
Common Stock, Shares, Issued
Segment Reporting [Line Items]
Segment Reporting Information [Line Items]
Investment, Variable Interest Rate, Type [Extensible Enumeration]
Noncash Project Abandonment Costs
Write-off of pursuit costs
Income Tax Expense (Benefit)
Provision for income tax
Income and other tax (expense) benefit
Income Tax Expense (Benefit), Total
Income and other tax expense (benefit)
Other comprehensive income loss.
Other Comprehensive Income Loss [Abstract]
Other comprehensive income (loss):
OP Units converted into shares of stock during the period. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit). Subject to certain exceptions, this unit can be exchanged for Common Shares on a one-for-one basis.
Shares Issued During Period Shares Conversion Of Units To Common Shares
Conversion of OP Units to Common Shares
Conversion of Limited Partner OP Units to EQR Common Shares
Conversion of redeemable OP units to common shares
Extinguishment of Debt, Amount
Repayment of outstanding principal balances
Amortization of Deferred Hedge Gains
Amortization of deferred settlements on derivative instruments
Stock Issued During Period, Value, Conversion of Units
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner
Class of Financing Receivable [Axis]
Class of Financing Receivable
Disclosure of acquisition/disposition transactions with closing dates subsequent to the balance sheet date for which the Company had entered into separate agreements prior to the balance sheet date. The closing of these transactions is subject to certain conditions and restrictions such that there can be no assurance that these transactions will be consummated or that the final terms will not differ in material respects from the original agreements.
Commitments To Acquire Dispose Of Real Estate [Text Block]
Commitments to Acquire/Dispose of Real Estate
Repayments of Lines of Credit
Line of credit repayments
Number of unconsolidated projects in various stages of development.
Number Of Unconsolidated Projects In Various Stages Of Development
Number of unconsolidated projects in various stages of development
Redemption of Preference Units
Redemption of Preferred Shares
Payments for Repurchase of Preferred Stock and Preference Stock
530.0 million of ten-year secured conventional mortgage note member.
Five Hundred and Thirty Million of Ten-Year Secured Conventional Mortgage Notes [Member]
530.0 Million of Ten-Year Secured Conventional Mortgage Note [Member]
% of residential rental income
Percentage Of Residential Rental Income
Percentage Of Residential Rental Income
Line of Credit Facility, Maximum Borrowing Capacity
Unsecured revolving credit facility
Unsecured revolving credit facility commitment
Schedule of consolidated joint venture variable interest entity.
Schedule Of Consolidated Joint Venture Variable Interest Entity Table [Text Block]
Summary of Company's Consolidated Joint Ventures
Debt Instrument, Cumulative Sinking Fund Payments
Mortgage principal reserves/sinking funds
Payments to Develop Real Estate Assets
Investment in real estate – development/other
Subsequent Event Type
Subsequent Event Type [Domain]
Real Estate Properties [Line Items]
Property/Unit schedule
Projects/Investments/Units/Remaining Commitments schedule
Stock Repurchase Program Number Of Shares Reauthorized
Stock repurchase program number of shares reauthorized.
Stock repurchase program, number of shares reauthorized
Number of shares repurchased since reauthorized
Number of Shares Repurchased Since Reauthorized
Number of shares repurchased since reauthorized
10b5-1 Trading Arrangement Subsequent Sale [Member]
10b5-1 trading arrangement subsequent sale.
Net income loss per outstanding limited partnership and general partnership unit.
Net Income Loss Per Outstanding Limited Partnership And General Partnership Unit Diluted [Abstract]
Earnings per Unit – diluted:
Represents the company's remaining funding obligation (i.e. total project costs less book value) for consolidated projects that are under development.
Consolidated Project Under Development Commitment Fund
Consolidated project under development commitment fund
Residential leases.
Residential Leases [Member]
Residential Leases [Member]
Depreciable property.
Depreciable Property
Depreciable property
Represents changes in the Company's issued and outstanding Common Shares and Units for the period.
Common Shares And Units Rollforward Table [Text Block]
Changes in Issued and Outstanding Common Shares and Units
Debt Instrument [Table]
Schedule of Long-Term Debt Instruments [Table]
Los Angeles.
Los Angeles [Member]
Los Angeles
4.21% fixed rate mortgage debt due to mature in November 2023 member.
Four Point Two One Percentage Fixed Rate Mortgage Debt due to Mature in November Two Thousand Twenty Three [Member]
4.21% Fixed Rate Mortgage Debt due to Mature in November 2023 [Member]
General and Administrative Expense, Total
General and Administrative Expense
General and administrative
Income Statement [Abstract]
Share Repurchase Program, Remaining Authorized, Number of Shares
Stock repurchase program, number of shares authorized to be repurchased
Seattle.
Seattle [Member]
Seattle
Real estate acquisitions/dispositions/other mortgage loans assumed.
Real Estate Acquisitions/Dispositions/Other Mortgage Loans Assumed
Mortgage loans assumed
Non-cash change in Supplemental Executive Retirement Plan (SERP) balances:
Non Cash Change In Supplemental Executive Retirement Plan Balances [Abstract]
Non cash change in supplemental executive retirement plan balances.
Adjustment to additional paid in capital and noncontrolling ownership interest.
Adjustment To Additional Paid In Capital And Noncontrolling Ownership Interest
Adjustment for Noncontrolling Interests ownership in Operating Partnership
Income Tax Jurisdiction [Axis]
Income Tax Authority
Land
Land
Distribution Made to Limited Partner, Cash Distributions Paid
Noncontrolling Interests – Operating Partnership
OP Units – Limited Partners
Accounting Standards Update and Change in Accounting Principle [Table]
Number of other real estate investment funds.
Number Of Other Real Estate Investment Funds
Number of other real estate investment funds
Related and Nonrelated Parties [Domain]
Related Party
8.29% Series K Cumulative Redeemable Preferred Stock
Eight Point Two Nine Percentage Series K Cumulative Redeemable Preferred Stock [Member]
Eight point two nine percentage series K cumulative redeemable preferred stock.
Amortization of deferred financing costs.
Amortization Of Deferred Financing Costs [Abstract]
Amortization of deferred financing costs:
Net income available to Units
Earnings Per Share, Basic, Total
Net income per share - basic
Net income available to Common Shares
Senior unsecured bridge loan
Bridge Loan
Document Period End Date
Document Period End Date
Document Information [Table]
Document Information [Table]
Notes [Member]
Notes [Member]
5.75% Notes [Member]
Unrealized gain loss on derivative instruments other assets
Other assets
Other assets
Unrealized Gain Loss On Derivative Instruments Other Assets
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Noncontrolling Interest [Abstract]
NONCONTROLLING INTERESTS
Common Stock, Shares Authorized
Common Stock, Shares Authorized
Fair value measurements valuation inputs description.
Fair Value Measurements Valuation Inputs Description
Valuation Inputs
Statement of Stockholders' Equity [Abstract]
Summary of Debt Extinguishment Costs Recorded as Additional Expense
Summary of debt extinguishment costs recorded as additional interest expense table text block.
Summary Of Debt Extinguishment Costs Recorded As Additional Interest Expense Table [Text Block]
Income (Loss) from Equity Method Investments
Income (loss) from investments in unconsolidated entities
(Income) loss from investments in unconsolidated entities
Dividends Payable
Distributions payable
Security deposits
Security Deposit Liability
Operating properties.
Operating Properties [Member]
Operating Properties [Member]
Number of Real Estate Properties
Properties
Number of unconsolidated joint ventures
Business Combination Common Stock Conversion Ratio
Business combination common stock conversion ratio.
Business combination common stock conversion ratio
Dividends [Domain]
Corporate Joint Venture [Member]
Corporate Joint Venture
Schedule of real estate commitments.
Schedule Of Real Estate Commitments Table [Text Block]
Summary of Real Estate Development Commitments
Fixed rate debt.
Fixed Rate Debt [Member]
Fixed Rate Debt [Member]
Premium on redemption of Preference Units
Premium on redemption of Preferred Shares - cash charge
Premium on redemption of Preferred Shares
Premium on redemption of Preferred Shares - cash charge
Premium on redemption of Preferred Shares /Allocation to premium on redemption of Preference Units
Tabular disclosure for term, amounts, nature of changes, rights and privileges, dividends and other matters related to preferred stock or preference units.
Schedule Of Preferred Stock Table [Text Block]
Issued and Outstanding Preferred Shares and Preference Units
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax
Other comprehensive income (loss)
Limited Partners Change in Book Value
Represents the change in the proportional relationship between the book values of capital associated with general partner units relative to that of the Limited Partners
Fair value measurements type description.
Fair Value Measurements Type Description
Fair Value Measurement Type
Commitments and Contingencies.
Commitments And Contingencies [Abstract]
Payments to Acquire Other Investments
Purchase of investment securities and other investments
Interest Rate Ranges (ending)
Debt Instrument, Interest Rate, Stated Percentage
Notes, interest rate
Costs and Expenses
Total expenses
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount
Unrealized gain on sale of investment securities
Employee holdings within the supplemental executive retirement plan.
Employee Holdings Within The Supplemental Executive Retirement Plan [Member]
Employee Holdings Within The Supplemental Executive Retirement Plan
Assets
Total assets
Consolidated Assets
Total assets
Litigation accruals
Estimated Litigation Liability
Net income available to Units - General Partner
Net Income (Loss) Allocated to General Partners
General Partner
Title of 12(b) Security
Title of 12(b) Security
Income (loss) from investments in unconsolidated entities.
Income Loss From Investments In Unconsolidated Entities [Abstract]
(Income) loss from investments in unconsolidated entities:
Proceeds from Equity Method Investment, Distribution, Return of Capital
Distributions from unconsolidated entities – return of capital
Preferred Stock, Value, Issued
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares authorized; 343,100 shares issued and outstanding as of June 30, 2026 and December 31, 2025
Finite-Lived Intangible Asset, Acquired-in-Place Leases
In-Place lease intangibles
Litigation Settlement, Amount Awarded to Other Party
Amount funded to claims administrator
Common Shares repurchased and retired
Payments for Repurchase of Common Stock
Interest capitalized for real estate and unconsolidated entities in development abstract.
Interest Capitalized For Real Estate And Unconsolidated Entities In Development [Abstract]
Interest capitalized for real estate and unconsolidated entities under development:
Termination Fee
Termination fee.
Termination fee
Total number of units associated with properties acquired or completed and stabilized two or more fiscal years ago, less properties subsequently sold.
Number Of Units In Same Store Properties
Units in same store properties
Stock Issued During Period, Value, Stock Options Exercised
Exercise of share options
Exercise of EQR share options
No Trading Symbol Flag
No Trading Symbol Flag
Preferred Units, Preferred Partners' Capital Accounts
Preference Units
Preferred Units, Preferred Partners' Capital Accounts, Total
Real estate technology and other real estate investments commitment funds.
Real Estate Technology And Other Real Estate Investments Commitment Funds
Real estate technology and other real estate investments commitment funds
Summary of information on unconsolidated development joint ventures.
Summary of Information on Unconsolidated Development Joint Ventures [Table Text Block]
Summary of Information on Total Unconsolidated Development Joint Ventures
Net Income (Loss) Allocated to Limited Partners
Limited Partners
Net income available to Units - Limited Partners
Number of States in which Entity Operates
Number of states in which entity operates
Derivative, Notional Amount
Current Notional Balance
Mortgage escrow deposits.
Mortgage Escrow Deposits [Abstract]
Mortgage escrow deposits:
Fair value of employee holdings other than common shares within the supplemental executive retirement plan at the balance sheet date.
Fair Value Of Serp Investments
Fair Value Of SERP Investments
Payments of Ordinary Dividends, Preferred Stock and Preference Stock
Preferred Shares
Preference Units
Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block]
Schedule of Reconciliation of Total Assets and Capital Expenditures
Interest Paid, Excluding Capitalized Interest, Operating Activity
Cash paid for interest, net of amounts capitalized
Residential [Member]
Residential.
Secured – conventional.
Secured Conventional [Member]
Secured - Conventional [Member]
Location, Statement of Financial Position, Balance [Axis]
Number of consolidated apartment units in various stages of development.
Number Of Consolidated Apartment Units In Various Stages Of Development
Number of consolidated apartment units in various stages of development
Real Estate [Abstract]
Mortgage notes payable net.
Mortgage Notes Payable Net [Abstract]
Mortgage notes payable, net:
Cash and Cash Equivalents [Domain]
Number of real estate investment funds
Number Of Real Estate Investment Funds
Number of real estate investment funds.
Investments in unconsolidated entities under development.
Investments In Unconsolidated Entities Under Development
Investments in unconsolidated entities
Investments in unconsolidated entities
Amount of amortization expense attributable to right-of-use asset from operating and finance lease.
Operating And Finance Lease Right Of Use Asset Amortization
Amortization of right-of-use assets
Segment Reporting [Table Text Block]
Schedule of NOI from Our Rental Real Estate for Continuing Operations
Interest and other income
Interest and Other Income
Interest and other income
The amount of the fixed and determinable portion of an unrecorded sales commitment for the disposition of a rental property, land parcel or other property subsequent to the balance sheet date.
Sales Price For Commitments To Dispose
Sales Price
Units.
Units [Abstract]
Units
NonResidential [Member]
NonResidential.
Non-Residential [Member]
Number of Units in Real Estate Property
Apartment units
Apartment Units
Earnings Per Share, Diluted [Abstract]
Earnings per share – diluted:
Equity, Attributable to Parent
Balance, end of period
Balance, beginning of year
Total shareholders’ equity
Mortgages [Member]
Mortgages [Member]
Increase (Decrease) in Interest Payable, Net
Increase (decrease) in accrued interest payable
Decrease to interest expense
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative
Other Liabilities, Fair Value Disclosure
Other Liabilities, Fair Value Disclosure
Interest capitalized for real estate and unconsolidated entities under development.
Payments Of Interest Capitalized For Real Estate And Unconsolidated Entities Under Development
Interest capitalized for real estate and unconsolidated entities under development
The number of restricted shares granted during the reporting period, net of cancellations.
Restricted Share Grants Net
Restricted share grants, net
Fair Value, by Balance Sheet Grouping [Table Text Block]
Summary of Carrying and Fair Values of Financial Instruments
Noncontrolling Interest in Operating Partnerships
Operating Partnership
Earnings Per Share [Text Block]
Earnings Per Share And Earnings Per Unit
Derivative, Fixed Interest Rate
Interest Rate
Estimate of Fair Value Measurement [Member]
Estimate of Fair Value Measurement [Member]
Number of reportable segments
Number of Reportable Segments
Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]
Derivative Instruments, Gain (Loss) [Table]
Secured – tax exempt.
Secured Tax Exempt [Member]
Secured - Tax Exempt [Member]
Revenue Benchmark [Member]
Revenue [Member]
Real Estate [Table]
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Land Available for Development
Land held for development
Credit Facility [Axis]
Credit Facility
Real Estate Taxes and Insurance
Real estate taxes and insurance
Real estate taxes and insurance expense
Projects under development.
Projectsunderdevelopment [Abstract]
Projects under development:
Secured Debt [Member]
Mortgage Notes Payable, Net [Member]
Stock, Class of Stock [Table]
Schedule Of Stock By Class [Table]
Cost of property management.
Cost Of Property Management
Property management
Repayment of debt
Repayments of Long-Term Debt
Scheduled principal repayments
Repayments of Long-Term Debt, Total
Revolving Credit Facility [Member]
Non-same store and other.
Non Same Store And Other [Member]
Non-same store/other
Proceeds from Stock Options Exercised
Proceeds from exercise of options
Proceeds from exercise of EQR options
Income (Loss) Attributable to Noncontrolling Interest, before Tax
Allocation to Noncontrolling Interests – Operating Partnership
Allocation to Noncontrolling Interests - Operating Partnership
The total number of rental properties that the Company disposed of to unaffiliated parties during the period.
Disposed Properties
Properties disposed
Properties
Geographical
Geographical [Domain]
On Site Payroll [Member]
On-site payroll.
On-site Payroll
Litigation Status [Domain]
Statistical Measurement [Axis]
Statistical Measurement
Amount of net income (loss) for the period allocated to noncontrolling partners in partially owned properties.
Allocation Of Net Income Loss To Noncontrolling Interests Partially Owned Properties
Partially Owned Properties
Net (income) loss attributable to Noncontrolling Interests – Partially Owned Properties
Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization [Abstract]
Depreciable property:
Entity Interactive Data Current
Entity Interactive Data Current
Non-Same Store [Member]
Non-same store member.
Non-same Store
DISTRICT OF COLUMBIA
Washington D.C.
The amount resulting from the "as if" assumption that stock options were exercised for purposes of computing the dilutive effect of convertible securities.
Dilutive Securities Options
Dilutive Securities Options
Purchase Price
Asset Acquisition, Consideration Transferred
Asset Acquisition, Consideration Transferred, Total
Common Stock, Value, Issued
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares authorized; 374,893,890 shares issued and outstanding as of June 30, 2026 and 377,806,173 shares issued and outstanding as of December 31, 2025
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share and Earnings Per Unit
Segment Reporting, Descriptive Information [Abstract]
Parent Company [Member]
Parent
Liabilities
Total liabilities
Consolidated Liabilities
Percentage points of line of credit facility commitment fee.
Percentage Points Of Line Of Credit Facility Commitment Fee
Percentage points of line of credit facility commitment fee
Ownership
Ownership [Domain]
Development Lease Up Projects [Member]
Development lease up projects.
Development Lease-Up Projects
Product and Service [Axis]
Product and Service
Retained Earnings (Accumulated Deficit)
Retained earnings
Retained Earnings (Accumulated Deficit), Total
Prior program.
Prior Program [Member]
Prior Program [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
Payments for capital expenditures to real estate.
Payments For Capital Expenditures To Real Estate
Capital expenditures to real estate
Utilities [Member]
Utilities.
Utilities
Replacement Reserve Escrow
Replacement reserves
Preferred Stock Dividends, Income Statement Impact
Preferred distributions
Other investments in Unconsolidated Entities.
Other Investments In Unconsolidated Entities [Member]
Other [Member]
Unsecured public.
Unsecured Public [Member]
Unsecured - Public [Member]
Equity Method Investment, Ownership Percentage
Ownership Percentage
Ownership percentage
Operating Expenses
Operating expenses
Total operating expenses
Operating Expenses, Total
Common Stock, Dividends, Per Share, Declared
Distributions declared per Common Share outstanding
Revenues [Abstract]
REVENUES
Fair Value, by Balance Sheet Grouping [Table]
Fair Value By Balance Sheet Grouping [Table]
Number of project subject to long term ground lease for land parcel
Number of project subject to long term ground lease for land parcel.
Number of Project Subject to Long Term Ground Lease for Land Parcel
Stock Issued During Period, Shares, Conversion of Units
Conversion of OP Units
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Business
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]
Changes in assets and liabilities:
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Proceeds from Partnership Contribution
Contributions – Noncontrolling Interests – Operating Partnership
Contributions – Limited Partners
Common Shares Issued.
Common Shares Issued [Abstract]
Common Shares Issued:
The expense charged against other assets to eliminate the capitalized costs of projects that have been terminated during the reporting period.
Write Off Of Pursuit Costs Other Assets
Other assets
Mortgage notes payable assumptions.
Mortgage Notes Payable Assumptions
Assumptions
Payments to acquire real estate
Payments to Acquire Real Estate
Investment in real estate – acquisitions
Payments to Acquire Real Estate, Total
Derivative, Contract Term
Derivative, term
Change in the value of Redeemable Limited Partners Units as a result of changes in the fair value of the company's common shares during the period.
Limited Partners Change In Redemption Value
Limited Partners Change In Redemption Value
Comprehensive (income) attributable to Noncontrolling Interests - Partially Owned Properties
Comprehensive (income) attributable to Noncontrolling Interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive (income) attributable to Noncontrolling Interests
Comprehensive (income) attributable to Noncontrolling Interests – Partially Owned Properties
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total
The expense charged against investment in real estate to eliminate the capitalized costs of projects that have been terminated during the reporting period.
Write Off Pursuit Costs Investment In Real Estate
Investment in real estate, net
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Number of unconsolidated apartment units in various stages of development.
Number Of Unconsolidated Apartment Units In Various Stages Of Development
Number of unconsolidated apartment units in various stages of development
Non-residential leases.
Non Residential Leases [Member]
Non-residential Leases [Member]
Non-Residential Leases [Member]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
Losses reclassified into earnings from other comprehensive income
Losses reclassified into earnings from other comprehensive income
Accumulated other comprehensive income
Accumulated other comprehensive income
Financial Asset, Amortized Cost, Accrued Interest, after Allowance for Credit Loss
Amortized cost basis including accrued interest
Total of Partners' Capital (deficit) items attributable to the parent. This excludes temporary equity and is sometimes called permanent equity.
Partners Capital Attributable To Parent
Balance, end of period
Balance, beginning of year
Proceeds from (payments on) settlement of derivative instruments, other assets.
Proceeds From (Payments On) Settlement Of Derivative Instruments, Other Assets
Other assets
Restricted Cash
Restricted cash
Rental Properties - Consolidated
Consolidated Properties [Member]
Partially Owned Properties - Consolidated
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.
Unrealized Gain Loss On Derivative Instruments [Abstract]
Realized/unrealized (gain) loss on derivative instruments:
AvalonBay Common Stock [Member]
AvalonBay common stock.
Ground lease intangibles
Investment in real estate acquisitions ground lease intangibles.
Investment In Real Estate Acquisitions Ground Lease Intangibles
Derivative Liability
Total
Derivative Liability, Total
Investment Building and Building Improvements
Buildings and improvements
Proceeds from issuance of unsecured notes
Proceeds from Issuance of Unsecured Debt
Line of Credit Facility, Increase (Decrease), Other, Net
Other restricted amounts
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Mortgage receivables from unconsolidated entities
Payments to Acquire Mortgage Notes Receivable
Mortgage receivables from unconsolidated entities
Long-Lived Asset, Class [Axis]
Long-Lived Tangible Asset
Write off of pursuit costs investments in unconsolidated entities.
Write Off Of Pursuit Costs Investments In Unconsolidated Entities
Investments in unconsolidated entities
Income Tax, Policy [Policy Text Block]
Income and Other Taxes
Schedule of Reconciliation of Net Income Per Consolidated Statements of Operations NOI from Rental Real Estate Specific to Continuing Operations
Represents a reconciliation of net operating income from rental real estate specific to continuing operations using rental income and operating expenses.
Reconciliation Of Noi Text Block Table [Text Block]
Schedule of Reconciliation of Net Income Per Consolidated Statements of Operations to NOI
Subsequent Events [Text Block]
Subsequent Events
Retained Earnings (Accumulated Deficit) [Abstract]
RETAINED EARNINGS
Right-of-use assets and lease liabilities initial measurement and reclassifications:
Right-of-use assets and lease liabilities initial measurement and reclassifications.
Right Of Use Assets And Lease Liabilities Initial Measurement And Reclassifications [Abstract]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Other lease revenue.
Other Lease Revenue [Member]
Other Lease Revenue [Member]
Five hundred and fifty million of ten-year secured conventional mortgage notes.
Five Hundred and Fifty Million of Ten-Year Secured Conventional Mortgage Notes [Member]
550.0 Million of Ten-Year Secured Conventional Mortgage Note [Member]
EQR and ERPOP [Member]
E Q R AND E R P O P Member
EQR and ERPOP.
Adjustments.
Adjustments Abstract
Adjustments:
Minority Interest Change In Book Value
Represents the change in the proportional relationship between the book values of equity associated with common shares relative to that of the noncontrolling interests.
Change in book value of Redeemable Noncontrolling Interests - Operating Partnership
Change in book value of Redeemable Noncontrolling Interests - Operating Partnership
Payments to Noncontrolling Interests
Acquisition of Noncontrolling Interests – Partially Owned Properties
Payments of Stock Issuance Costs
Payment of offering costs
Partner Type [Axis]
Partner Type
Number of forward starting swaps settled.
Number of Forward Starting Swaps Settled
Number of forward starting swaps settled
Concentration Risk Type [Domain]
Concentration Risk Type
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Net income
Total NOI
Mortgage notes payable, net
Secured debt
Mortgage notes payable, net ending balance
Mortgage notes payable, net beginning balance
Secured Debt, Total
Mortgage notes payable, net
Share Repurchase Program [Axis]
Share Repurchase Program
Other Assets, Fair Value Disclosure
Derivative [Line Items]
Stockholders' Equity, Other
Other
Other expenses
Other Nonoperating Expense
Other expenses
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Amount of Gain/(Loss) Recognized in OCI on Derivative
Line Of Credit And Commercial Paper [Member]
Line Of Credit And Commercial Paper [Member]
Line of credit and commercial paper.
Total liabilities and equity/capital
Liabilities and Equity
Commercial Paper
Commercial paper balance outstanding
Commercial paper balance outstanding
Assumption that units were converted into Common Shares for computing the dilutive effects of convertible units.
Dilutive Op Units
OP Units
Proceeds from Unsecured Notes Payable
Proceeds
Document Fiscal Period Focus
Document Fiscal Period Focus
Partners' Capital Attributable to Noncontrolling Interest
Balance, end of period
Balance, beginning of year
Value of Units exchanged between Limited Partners and the General Partner. Total Units outstanding remains consistent.
Exchange Of O P Units Between Limited Partner And General Partner
Conversion of OP Units held by Limited Partners into OP Units held by General Partner
Units outstanding.
Units Outstanding
Total Units Outstanding
Total Units Outstanding
Partial redemption
Partial Redemption Amount
Partial redemption amount.
Derivatives, Fair Value [Line Items]
Derivatives Fair Value [Line Items]
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax
Net income available to Units
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
Summary of Effect of Cash Flow Hedges on the Accompanying Consolidated Statements of Operations and Comprehensive Income
Proceeds from Equity Method Investment, Distribution
Distributions from unconsolidated entities – return on capital
Proceeds from Sale, Real Estate, Held-for-Investment
Proceeds from disposition of real estate, net
Proceeds from Sale of Real Estate Held-for-investment, Total
Apartment Units
Total number of units associated with the property or properties acquired from unaffiliated third parties during the period.
Property Units Acquired
Property units acquired
Development in Process
Projects under development
Other assets
Non Cash Change In Supplemental Executive Retirement Plan Balances Other Assets
Non-cash change in supplemental executive retirement plan balances other assets.
Consolidation Of Previously Unconsolidated Entities [Abstract]
Consolidation of previously unconsolidated entities.
Consolidation of previously unconsolidated entities:
Subsegments [Domain]
EXPENSES
Costs and Expenses [Abstract]
Operating Lease, Lease Income
Rental income
Operating Lease, Lease Income, Total
Line of Credit Facility, Current Borrowing Capacity
Unsecured revolving credit facility availability
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Other comprehensive income (loss) – derivative instruments:
Accumulated other comprehensive income (loss) - derivative instruments:
Sale of Stock [Axis]
Sale of Stock
Premium on redemption of Preferred Shares
Premium On Redemption Of Preferred Shares
Premium on redemption of preferred shares.
Senior Unsecured Bridge Loan Facility [Member]
Senior unsecured bridge loan facility member.
Number of units issued during the period as a result of a long-term incentive plan.
Issuance Of Ltips
Restricted unit grants, net
Entity Current Reporting Status
Entity Current Reporting Status
The expense charged against earnings to eliminate the capitalized costs of projects that have been terminated during the reporting period, which is added back to net income when calculating cash provided by (used in) operations using the indirect method.
Write Off Of Pursuit Costs [Abstract]
Write-off of pursuit costs:
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Class of Stock [Domain]
Preferred stocks preference units call date.
Preferred Stocks Preference Units Call Date
Preferred Stocks Preference Units Call Date
Realized Investment Gains (Losses)
Realized gain (loss) on sale of investment securities
Realized Investment Gains (Losses), Total
Financial Instrument [Axis]
Operating lease lease income bad debt net.
Operating Lease Lease Income Bad Debt Net
Bad debt, net
Document Transition Report
Document Transition Report
Paid in capital
Non Cash Change In Supplemental Executive Retirement Plan Balances Paid In Capital
Non cash change in supplemental executive retirement plan balances paid in capital.
Other Expansion Markets
Other Expansion Markets [Member]
Other expansion markets.
Commitments and Contingencies Disclosure [Abstract]
Schedule of Real Estate Properties [Table Text Block]
Ownership Breakdown
Increase (decrease) in lease liabilities.
Increase Decrease In Lease Liabilities
Increase (decrease) in lease liabilities
Total number of open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. These projects are consolidated.
Number Of Projects In Various Stages Of Development
Number of projects in various stages of development
Real estate investment funds
Real Estate Investments, Net
Real Estate Investments, Net, Total
Real Estate Technology Investments
Number of entity.
Entities
Number Of Entity
Lessor, Lease, Description [Table]
Lessor Lease Description [Table]
Gain (Loss) on Sale of Investments
Realized (gain) loss on sale of investment securities
Gain (Loss) on Sale of Investments, Total
Realized (gain) loss on investment securities
The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the unsecured notes during the period.
Amortization Of Discounts And Premiums On Debt Notes Net
Notes, net
Amortization of premiums/ discounts
Parking [Member]
Parking Rent [Member]
Loss from investments in unconsolidated entities.
Loss From Investments In Unconsolidated Entities [Abstract]
(Income) loss from investments in unconsolidated entities:
Cash [Member]
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Equity:
Dallas/Austin
Dallas Austin [Member]
Dallas Austin.
Debt, Weighted Average Interest Rate
Weighted Average Interest Rate
Weighted average interest rates
Common Stock [Member]
COMMON SHARES, $0.01 PAR VALUE
Common Shares [Member]
The cash outflow to repay long-term debt that is wholly or partially secured by collateral.
Repayments Of Mortgage Notes Payable
Scheduled principal repayments
Proceeds from Lines of Credit, Total
Proceeds from Lines of Credit
Line of credit proceeds
Credit Facility [Domain]
Credit Facility
Statistical Measurement [Domain]
Statistical Measurement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Distributions to Noncontrolling Interests
Notes Payable
Notes, net ending balance
Notes, net beginning balance
Notes, net
Notes Payable, Total
550.0 million of secured notes member.
Five Hundred and Fifty Point Zero Million of Secured Notes [Member]
550.0 Million of Secured Notes [Member]
Projects Under Development [Member]
Project under development.
Project Under Development [Member]
Equity, Attributable to Parent [Abstract]
Shareholders' equity:
Weighted Average Number of Shares Outstanding, Basic
Weighted average Common Shares outstanding
Weighted Average Number of Shares Outstanding, Basic, Total
Same and Non-same Store
Same and Non-Same Store [Member]
Same and non-same store member.
Denver.
Denver [Member]
Denver
Payments for Hedge, Financing Activities
Amount paid to settle forward starting swaps
Real estate holding entities.
Real Estate Holding Entities [Member]
Real Estate Holdings [Member]
Assets [Abstract]
ASSETS
Entity Central Index Key
Entity Central Index Key
Entity Central Index Key
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]
Aggregate dividends payable during the year for each share/unit of preferred stock/preference units outstanding.
Annual Dividend Per Preferred Share Preference Unit
Annual Dividend Per Preferred Share Preference Unit
Common Shares Other:
Common Shares Other [Abstract]
Common shares other.
Investments in partially owned entities.
Investments In Partially Owned Entities [Abstract]
PARTIALLY OWNED PROPERTIES
Line of Credit Facility [Table]
Line Of Credit Facility [Table]
Class of Stock [Line Items]
Class Of Stock [Line Items]
General and Limited Partners' Capital Account [Abstract]
General and Limited Partner Units
Current Fiscal Year End Date
Current Fiscal Year End Date
Derivative [Table]
Projects under development unconsolidated member.
Projects Under Development Unconsolidated [Member]
Projects Under Development Unconsolidated [Member]
Document Quarterly Report
Document Quarterly Report
Debt Instrument, Maturity Date
Debt instrument, maturity date
Represents the amount by which available borrowings on the unsecured revolving credit facility may be increased. The available borrowings may be increased by adding additional banks to the facility or obtaining the agreement of existing banks to increase their commitments.
Ability To Increase Line Of Credit
Ability to increase LOC facility
Net Income (Loss) Available to Common Stockholders, Diluted
Numerator for net income per share – diluted
Redeemable noncontrolling interests – operating partnership/redeemable limited partners.
Redeemable Noncontrolling Interests Operating Partnership Redeemable Limited Partners [Member]
Redeemable Noncontrolling Interests Operating Partnership Redeemable Limited Partners
Gain Loss On Sale Of Land Parcels
Gain loss on sale of land parcels.
Net (gain) loss on sales of land parcels
Net gain (loss) on sales of land parcels
Unsecured Debt [Abstract]
Notes, net:
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Redeemable Noncontrolling Interests – Operating Partnership
Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total
Cash and Cash Equivalents [Axis]
Increase (decrease) in charges hedge termination activities
Increase Decrease In Charges Hedge Termination Activities
Amount recorded in accumulated other comprehensive loss that will be recognized as an increase (decrease) to interest expense over the term of the note.
Notes issued
Unsecured notes issued.
Unsecured Notes Issued
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Unrealized Gain (Loss) on Investments
Unrealized (gain) loss on sale of investment securities
Unrealized gain on sale of investment securities
Unrealized (gain) loss on investment securities
Partners' Capital, Including Portion Attributable to Noncontrolling Interest [Abstract]
Capital:
Carrying amount of equity interests owned by noncontrolling partners in partially owned properties.
Noncontrolling Interests Partially Owned Properties
Partially Owned Properties
Noncontrolling Interests – Partially Owned Properties
Unsecured Debt [Member]
Unsecured Debt [Member]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Restricted Cash [Abstract]
Restricted cash:
Earnings Per Share, Diluted, Total
Net income per share - diluted
Net income available to Common Shares
Net income available to Units
Commitments to Acquire/Dispose of Real Estate.
Commitments To Acquire Dispose Of Real Estate [Abstract]
Preferred unit par value
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par or stated value per share
Net income attributable to controlling interests
Net income attributable to controlling interests
Finance ground lease principal payments.
Finance Ground Lease Principal Payments
Finance ground lease principal payments
Leases disclosure.
Leases Disclosure [Text Block]
Leases
Preferred Stock, Value, Outstanding
8.29% Series K Cumulative Redeemable Preferred Shares/Preference Units; liquidation value $50 per share/unit; 343,100 shares/units issued and outstanding as of June 30, 2026 and December 31, 2025
Ownership [Axis]
Ownership
Increase (Decrease) in Other Operating Assets
(Increase) decrease in other assets
Increase (Decrease) in Other Operating Assets, Total
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Repayments of Commercial Paper
Commercial paper repayments
Summary of Consolidated Assets and Liabilities Related to the Company's VIEs
Schedule of consolidated assets and liabilities related to variable interest entity.
Schedule Of Consolidated Assets And Liabilities Related To Variable Interest Entity Table [Text Block]
Long-Lived Asset, Class [Domain]
Long-Lived Tangible Asset
Stock repurchase program, number of shares authorized to be repurchased
Share Repurchase Program, Authorized, Number of Shares
Equity Method Investments [Table Text Block]
Summary of Company's Investment in Unconsolidated Entities
EQR [Member]
EQR.
Proceeds From Consolidation Of Previously Unconsolidated Entities
Proceeds from consolidation of previously unconsolidated entities.
Consolidation of previously unconsolidated entities
Real Estate Tax And Insurance
Real estate taxes and insurance
Real Estate Tax And Insurance
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income attributable to controlling interests
Variable Interest Entity, Primary Beneficiary [Member]
Consolidated VIE [Member]
Income Tax Jurisdiction [Domain]
Income Tax Authority
Acquisitions noncontrolling interests partially owned properties.
Acquisitions Noncontrolling Interests Partially Owned Properties
Acquisition of Noncontrolling Interests – Partially Owned Properties
Liquidation value
Preferred Stock, Liquidation Preference, Value
The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes, insurance and replacement reserve obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments.
Escrow Deposits For Mortgage And Replacement Reserves
Mortgage escrow deposits
Noncontrolling Interest Items [Abstract]
Noncontrolling Interests:
Debt Instrument, Fair Value Disclosure
Total debt, net
Debt Instrument, Fair Value Disclosure, Total
Equity Components [Axis]
Equity Components
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM INVESTING ACTIVITIES:
PARTIALLY OWNED PROPERTIES [Member]
Partially Owned Properties [Member]
Statement of Cash Flows [Abstract]
Proceeds from (payments on) settlement of derivative instruments.
Proceeds From (Payments On) Settlement Of Derivative Instruments [Abstract]
Proceeds from (payments on) settlement of derivative instruments:
Number of all classes of common stock held by shareholders, which is net of related treasury stock, and number of all Operating Partnership Units held by various individuals and entities that contributed their properties to the Operating Partnership.
Common Shares And Units Outstanding
Common Shares And Units Outstanding
Common Shares And Units Outstanding
Common Shares And Units Outstanding
Fixtures and Equipment, Gross
Furniture, fixtures and equipment
Replacement Loans [Member]
Replacement Loans.
Replacement Loans [Member]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
APIC, Share-Based Payment Arrangement, ESPP, Increase for Cost Recognition
ESPP discount
EQR ESPP discount
Unsecured revolving credit facility
Unsecured Revolving Credit Facility [Member]
Unsecured Revolving Credit Facility [Member]
Proceeds from Noncontrolling Interests
Contributions – Noncontrolling Interests – Partially Owned Properties
Equity Securities without Readily Determinable Fair Value, Amount
Real Estate Technology Investments
Fair Value Measurements
Fair Value Disclosures [Text Block]
Restricted Cash and Cash Equivalent
Restricted deposits
Restricted deposits
Repurchase of stock, weighted average price per share
Repurchase Of Stock Weighted Average Price Per Share
Repurchase of stock weighted average price per share.
OP Units repurchased and retired
OP Units Repurchased and Retired
OP Units repurchased and retired.
Restricted shares
Restricted Shares
Restricted shares.
Lessor, Lease, Description [Line Items]
Lessor Lease Description [Line Items]
The cash inflow from the sale of real estate investment property.
Proceeds From Sale Of Property
Sales Price
Payments of Ordinary Dividends, Noncontrolling Interest
Noncontrolling Interests – Partially Owned Properties
Forward starting swaps.
Forward Starting Swaps [Member]
Forward Starting Swaps [Member]
Preferred Stock, Shares Authorized
Preferred Stock, Shares Authorized
Preferred stock, shares authorized
Equity Securities without Readily Determinable Fair Value [Table Text Block]
Summary of Real Estate Technology Investment Securities included in Other Assets
Amount of lessee's right to use underlying asset under operating and finance lease.
Operating And Finance Lease Right Of Use Asset
Right-of-use assets
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels
Line of Credit Facility [Abstract]
Line of credit and commercial paper:
Derivative Contract [Domain]
Derivative Contract
Class of Stock [Axis]
Summary of Residential Accounts Receivable and Straight-Line Receivable Balances
Summary Of Residential Accounts Receivable And Straight Line Receivable Balances [Table Text Block]
Summary of residential accounts receivable and straight line receivable balances.
Non-cash share distribution and other transfers from unconsolidated entities:
Non cash share distribution from unconsolidated entities.
Non Cash Share Distribution From Unconsolidated Entities [Abstract]
Represents the Equity of the Parent Company and the Capital of the Operating Partnership as well as the interests of Partially Owned and Limited Partners.
Equity Capital And Other Interests [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]
AOCI Attributable to Parent [Member]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Partners' Capital, Including Portion Attributable to Noncontrolling Interest
Total capital
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Increase (decrease) in accounts payable and accrued expenses
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
Total cash consideration
Cash Consideration
Cash consideration.
Construction Loans [Member]
Construction Loans
Amortization of above/below market lease intangibles
Amortization of above and below Market Leases
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark
Debt financing costs mortgage notes payable, net.
Debt Financing Costs Mortgage Notes Payable Net
Mortgage notes payable, net
Mortgage notes payable, net
Tabular disclosure of variable rate construction mortgage debt.
Summary Of Variable Rate Construction Mortgage Debt [Text Block]
Summary of Variable Rate Construction Mortgage Debt
Unconsolidated development joint ventures.
Unconsolidated Development Joint Ventures [Member]
Unconsolidated Development Joint Ventures [Member]
Non-same store.
Non Same Store [Member]
Non-same store
Floating rate debt.
Floating Rate Debt [Member]
Floating Rate Debt [Member]
Effective interest rate of approximately 4.7 % member.
Effective Interest Rate of Approximately Four Point Seven Percentage [Member]
Effective Interest Rate of Approximately 4.7% [Member]
OP Units repurchased and retired
Partners Capital Units Shares Repurchased And Retired
Partners capital units shares repurchased and retired.
Mortgage notes period
Mortgage Notes Period
Mortgage notes period.
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
ACCUMULATED OTHER COMPREHENSIVE (LOSS)
Redeemable Limited Partners
The greater of carrying value (book value) or fair market value of an entity's issued and outstanding Units which is not included within Partner's Capital in Capital. Represents a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the units to another class of equity.
Redeemable Limited Partners
Redeemable Limited Partners
Redeemable Limited Partners
Document Type
Document Type
Operating Lease, Lease Income [Table Text Block]
Summary of Lease Income Types Relating to Total Lease Revenue Along With the Total Other Rental Income
NEW YORK
New York
Acquisitions of Noncontrolling Interests - Partially Owned Properties
(Reduction to) increase in paid in capital (included in general partner's capital) due to Units issued to noncontrolling interests as a result of an acquisition and/or the buy out of a joint venture partner's interest during the period.
Acquisition Noncontrolling Interests Partially Owned Properties
Legal Litigation Liability [Member]
Legal litigation liability.
Other liabilities
Other liabilities
Non Cash Change In Supplemental Executive Retirement Plan Balances Other Liabilities
Non cash change in supplemental executive retirement plan balances other liabilities.
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES:
Mortgage Notes Payable Disclosure [Text Block]
Summary of Mortgage Notes Payable Activity
Liabilities and Equity [Abstract]
LIABILITIES AND EQUITY
Operating lease lease income (loss).
Operating Lease Lease Income Loss
Total lease revenue
Investments in unconsolidated entities - acquisitions
Investments in unconsolidated entities - acquisitions
Investments in unconsolidated entities - acquisitions
EQR's investments in unconsolidated entities - acquisitions
Debt financing costs other assets.
Debt Financing Costs Other Assets
Other assets
Other assets
Subsequent Event [Member]
Subsequent Events [Member]
Operating Income (Loss)
Operating income
Operating income
Net operating income loss from rental real estate.
Net Operating Income loss From Rental Real Estate
NOI
Total NOI
The entire disclosure for shareholders' equity as well as for the formation, structure, control and ownership of the partnership. Including, but not limited to: (1) balances of common stock, preferred stock, paid-in capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) balances of general partners capital account, limited partners capital account, preferred partners capital account and total partners capital account and units outstanding; (9) amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; and (10) distribution policies and distributions paid by unit class.
Equity Capital And Other Interests [Text Block]
Equity, Capital and Other Interests
Various real estate holdings.
Various Real Estate Holdings [Member]
Various Real Estate Holdings [Member]
Investment in real estate net unconsolidated entities other
Investment In Real Estate Net Unconsolidated Entities Other
Investment in real estate, net
Disposal Group Classification [Axis]
Disposal Group Classification
Common Share distributions
Dividends, Common Stock, Cash
Wholly Owned Properties [Member]
Wholly Owned Properties
Wholly Owned Properties [Member]
Segment Reporting [Table]
Schedule Of Segment Reporting Information By Segment [Table]
Securities Act File Number
Entity File Number
Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic, Net of Tax [Abstract]
Earnings per Unit – basic:
Expected number of members in board of trustee
Expected Number of Members in Board of Trustee
Expected number of members in board of trustee.
Other liabilities
Non Cash Share Distribution From Unconsolidated Entities Changes In Other Liabilities
Non-cash share distribution from unconsolidated entities changes in other liabilities.
Income Tax Jurisdiction, Domestic Federal [Member]
Federal [Member]
Distributions Per Limited Partnership and General Partnership Unit, Outstanding, Basic
Distributions declared per Unit outstanding
The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the realted debt instruments.
Amortization Of Discounts And Premiums On Debt [Abstract]
Amortization of discounts and premiums on debt:
Unconsolidated project under development commitment fund.
Unconsolidated Project Under Development Commitment Fund
Unconsolidated project under development commitment fund
New Program [Member]
New program.
New Program [Member]
Real estate acquisitions/dispositions/other.
Real Estate Acquisitions/Dispositions/Other [Abstract]
Real estate acquisitions/dispositions/other:
Dividends, Preferred Stock, Cash
Preferred Share distributions
RETAINED EARNINGS
Retained Earnings [Member]
Proceeds from (Payment for) Other Financing Activity
Other financing activities, net
Summary of residential and non-residential accounts receivable and straight-line receivable balances.
Summary Of Residential And Non Residential Accounts Receivable And Straight Line Receivable Balances Table [Text Block]
Summary of Residential and Non-Residential Accounts Receivable and Straight-Line Receivable Balances
Summary of Residential Accounts Receivable and Straight-Line Receivable Balances
Weighted Average Maturity (in days)
Debt Instrument, Term
Notes, term
Derivative Instrument Detail [Abstract]
Entity Registrant Name
Entity Registrant Name
Total number of rental properties to be disposed of subsequent to the balance sheet date per separate agreements entered into prior to the balance sheet date.
Properties Contracted To Be Disposed
Properties
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Depreciation
Depreciation
Depreciation, Total
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income
Net income
Net income attributable to Noncontrolling Interests
Noncontrolling Interest, Change in Redemption Value
Change in market value of Redeemable Noncontrolling Interests - Operating Partnership
Change in market value of Redeemable Noncontrolling Interests - Operating Partnership
Discloses properties and associated units that the Company disposed of to unaffiliated parties as well as sales price. Includes both rental properties and condominium conversion properties.
Disposed Properties Table Text Block Table [Text Block]
Disposed Properties to Unaffiliated Parties
Land [Member]
Land [Member]
Land Parcels (one)
Debt instrument maturity year, start.
Debt Instrument Maturity Year Start
Maturity Date Ranges, Start
Other Operating Expenses [Member]
Other operating expenses.
Other
Percentage of Achieved Occupancy
Percentage of achieved occupancy.
Percentage of achieved occupancy
Entity Address, Address Line One
Entity Address, Address Line One
Increase (Decrease) in Security Deposits
Increase (decrease) in security deposits
Net Income (Loss) Attributable to Noncontrolling Interest
Net income attributable to Noncontrolling Interests
Operating Partnership
Net Income (Loss) Attributable to Noncontrolling Interest, Total
Restricted Assets Disclosure [Text Block]
Restricted Deposits
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Exercise of share options
Amount of amortization of other deferred financing costs associated with mortgage notes payable, net.
Amortization Of Deferred Financing Costs Mortgage Notes Payable Net
Mortgage notes payable, net
Investments in partially owned entities.
Investments In Partially Owned Entities Textuals [Abstract]
Debt Instrument, Issued, Principal
Notes issued
SERP [Member]
SERP.
Amount of amortization of other deferred financing costs associated with other assets.
Amortization Of Deferred Financing Costs Other Assets
Other assets
Realized/unrealized (gain) loss on derivative instruments
Gain (Loss) on Sale of Derivatives
Segments [Axis]
Segments
Loss Contingencies [Line Items]
Apartment Units
Property Units Agreed to Be Acquired
Property units agreed to be acquired.
Net gain (loss) on sales of real estate properties
Net (gain) loss on sales of real estate properties
Gains (Losses) on Sales of Investment Real Estate
Net Gain (Loss)
Supplemental Cash Flow Information [Abstract]
SUPPLEMENTAL INFORMATION:
Payments of Financing Costs
Debt financing costs
Payments of Financing Costs, Total
Investment in real estate, net
Investment In Real Estate Net Under Consolidation Of Previously Unconsolidated Entities
Investment in real estate net under Consolidation of previously unconsolidated entities.
Net Book Value at June 30, 2023
Sale Leaseback Transaction, Net Book Value
Sale Leaseback Transaction, Net Book Value, Total
Entity Small Business
Entity Small Business
Projects under development consolidated member,
Projects Under Development Consolidated [Member]
Projects Under Development Consolidated [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Investment, Name [Domain]
Investment, Name
Land held for development.
Landheldfordevelopment [Abstract]
Land held for development:
Aggregate cash, stock and paid-in-kind dividends declared for preference unitholders during the period.
Dividends Preference Units
Preference Units
Allocation to Preference Units
Weighted Average Limited Partnership and General Partnership Units Outstanding, Basic
Weighted average Units outstanding
Denominator for net income per Unit – basic
Long-Term Debt, Type
Long-Term Debt, Type [Axis]
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Represents the change in the proportional relationship between the carrying values of equity associated with common shares relative to that of the noncontrolling interests.
Minority Interest Change In Carrying Value
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership
Other assets
Other assets
Other assets
Other Assets, Total
Aggregate number of preferred shares/preference units held by security holders. Does not include preferred shares/preference units that have been repurchased.
Preferred Stock Preference Units Outstanding
Preferred Stock Preference Units Outstanding
Schedule of Long-Term Debt Instruments [Table Text Block]
Summary of Certain Interest Rate and Maturity Date Information
Derivatives.
Derivatives [Member]
Derivatives
Earnest money on pending acquisitions.
Earnest Money On Pending Acquisitions
Earnest money on pending acquisitions
Earnings Per Share [Abstract]
Derivative Asset, Total
Derivative Asset
Partners' Capital [Abstract]
OPERATING PARTNERSHIP
Partners’ Capital:
Deposits - restricted.
Deposits Restricted [Abstract]
Deposits - Restricted [Abstract]
The value of unconsolidated entities real estate assumed by the Company during the reporting period.
Investments In Unconsolidated Entities
Investments in unconsolidated entities
Amortization of deferred financing costs
The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement for cash outflows paid to third parties in connection with debt origination. Includes both continuing operations and discontinued operations.
Amortization Of Deferred Financing Costs
Amortization of deferred financing costs
Weighted Average Amount Outstanding
Line of Credit Facility, Average Outstanding Amount
Weighted average amount outstanding
Loss Contingency Accrual, Ending Balance
Loss Contingency Accrual, Beginning Balance
Litigation accruals amount
Other.
Other [Member]
Other
Subsequent Event Type [Axis]
Subsequent Event Type
Non cash share distribution from unconsolidated entities investments in unconsolidated entities.
Non Cash Share Distribution From Unconsolidated Entities Investments In Unconsolidated Entities
Investments in unconsolidated entities
Apartment Units
Total number of rental units to be disposed of subsequent to the balance sheet date per separate agreements entered into prior to the balance sheet date.
Units Contracted To Be Disposed
Limited Partners' Capital Account [Abstract]
Limited Partner Units
Product and Service [Domain]
Product and Service
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
CASH FLOWS FROM FINANCING ACTIVITIES:
Amortization of Debt Discount (Premium)
Amortization of discounts and premiums on debt
Project under development commitment fund.
Project Under Development Commitment Fund
Project under development commitment fund
Members' Capital
Balance, beginning of year
Balance, end of period
Consolidated Entities [Axis]
Consolidated Entities
Number Of Real Estate Properties, Projects and Entities
Number of real estate properties, projects and entities.
Properties/Projects/Entities
Interest Payable
Accrued interest payable
Liabilities:
Liabilities [Abstract]
Restrictions on Cash and Cash Equivalents [Table Text Block]
Restricted Deposits
Entity Tax Identification Number
Entity Tax Identification Number
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Investments in unconsolidated entities
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total
Derivative Instrument [Axis]
Derivative Instrument
Equity Component [Domain]
Equity Component
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive income
Entity Address, City or Town
Entity Address, City or Town
Real Estate Disclosure [Text Block]
Real Estate
Investment in real estate acquisitions investment in real estate, net.
Investment In Real Estate Acquisitions Investment In Real Estate, Net
Investment in real estate, net
Business Combination [Axis]
Measurement Input Type [Domain]
Measurement Input Type
Income Tax Paid, after Refund Received
Net cash paid (received) for income and other taxes
Income Taxes Paid, Net, Total
Termination Period
Termination period.
Termination period
Segments [Domain]
Segments
Public Unsecured Notes
Public unsecured notes.
Public Unsecured Notes [Member]
Investments In Unconsolidated Entities Under Consolidation Of Previously Unconsolidated Entities
Investments in unconsolidated entities under consolidation of previously unconsolidated entities.
Investments in unconsolidated entities
Redeemable Noncontrolling Interest [Table]
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Equity Method Investments
Investments in Unconsolidated Entities
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)
Unrealized gain (loss) on interest rate cash flow hedges, pretax, accumulated other comprehensive income (loss)
Concentration Risk Type [Axis]
Concentration Risk Type
Real Estate Taxes [Member]
Real estate taxes.
Real Estate Taxes
Partners' Capital
Total partners’ capital
Partners' Capital, Beginning Balance
Partners' Capital, Ending Balance
Investments in unconsolidated entities - development/other:
Investments in unconsolidated entities other.
Investments In Unconsolidated Entities Other [Abstract]
Net Income (Loss) Attributable to Parent [Abstract]
ALLOCATION OF NET INCOME:
Commercial Paper [Member]
Commercial Paper [Member]
Entity [Domain]
Entity
The price per share/unit at which the preferred share/preference units of the entity has priority over common shares/units in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of these preferred shares/units are solely within the control of the issuer.
Preferred Stock Preference Units Redemption Price Per Share Unit
Preferred Stock Preference Units Redemption Price Per Share
Debt financing costs.
Debt Financing Costs [Abstract]
Debt financing costs:
ATM share offering.
A T M Share Offering [Member]
ATM Share Offering [Member]
Shares Granted or Issued, Share-Based Payment Arrangement [Abstract]
COMMON SHARES, $0.01 PAR VALUE
Payments to acquired interest in previously unconsolidated operating property
Payments To Acquired Interest In Previously Unconsolidated Operating Property
Payments to acquired interest in previously unconsolidated operating property.
Represents the accrual of indirect costs incurred from a material business combination such as severance and retention bonuses.
Other Liabilities Loss From Investments In Unconsolidated Entities Merger
Other liabilities
Premium on Redemption of Preferred Shares Cash Charge
Premium on redemption of preferred shares cash charge.
Premium on redemption of Preferred Shares - cash charge
Measurement Basis [Axis]
Measurement Basis
Discloses properties and associated units that the Company purchased from unaffiliated parties as well as purchase price.
Acquired Properties Table Text Block Table [Text Block]
Acquired Properties From Unaffiliated Parties
Total number of preferred shares/preference units issued to security holders. May be all or portion of the number of preferred shares/preference units authorized. Excludes preferred shares/preference units that are classified as debt.
Preferred Stock Preference Units Issued
Preferred Stock Preference Units Issued
AvalonBay [Member]
AvalonBay.
Statement [Table]
Statement [Table]
Utility recoveries.
Utility Recoveries [Member]
Utility Recoveries (RUBS Income) [Member]
Summary of residential bad debt for company's properties.
Summary Of Residential Bad Debt For Companys Properties Table [Text Block]
Summary of Residential Bad Debt for Company's Properties
Mortgage Receivables from Unconsolidated Entities
Mortgage receivables from unconsolidated entities.
Mortgage receivables from unconsolidated entities
Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block]
Schedule of Reconciliation of Operating Expenses
Payments of Dividends [Abstract]
Distributions:
Real Estate Property, Ownership [Table]
Schedule Of Real Estate Properties [Table]
Entity Shell Company
Entity Shell Company
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash provided by (used for) investing activities
Summary of notes activity.
Summary Of Notes Activity Table [Text Block]
Summary of Notes Activity
The expense charged against accounts payable and accrued expenses to eliminate the capitalized costs of projects that have been eliminated during the reporting period.
Write Off Of Pursuit Costs Accounts Payable And Accrued Expenses
Accounts payable and accrued expenses
Statement [Line Items]
Statement [Line Items]
Payments for (Proceeds from) Hedge, Financing Activities, Total
Payments for (Proceeds from) Hedge, Financing Activities
Proceeds from (payments on) settlement of derivative instruments
Net of tax effect of the reclassification adjustment for deferred gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges included in other liabilities that was charged against earnings during the period.
Amortization Of Deferred Settlements On Derivative Instruments Other Liabilities
Other liabilities
Number Of Real Estate Properties and Projects
Number of real estate properties and projects.
Total Properties/Projects
Total Properties/Projects
Investment in real estate, net
Investment in real estate, net under development.
Investment In Real Estate Net Under Development
Investment in real estate, net
Maximum [Member]
Maximum [Member]
Proceeds from EQR's Employee Share Purchase Plan (ESPP)
Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Excluding Option Exercised
Proceeds from Employee Share Purchase Plan (ESPP)
Debt Disclosure [Abstract]
Sale of Stock [Domain]
Sale of Stock
Notes Payable, Other Payables [Member]
Notes [Member]
Increase (Decrease) in Other Operating Liabilities
Increase (decrease) in other liabilities
Increase (Decrease) in Other Operating Liabilities, Total
Repayments of Unsecured Debt
Lump sum payoffs
Total change in redeemable limited partners during the period due to redemptions and adjustments to redemption value of limited partners.
Limited Partners Redemptions
Change in market value of Redeemable Limited Partners
Derivative maturity year.
Derivative Maturity Year
Maturity Date
Business Combination [Domain]
Business Combination, Voting Equity Interest Acquired, Percentage
Expected ownership percentage
Construction in Progress [Member]
Construction-in-progress [Member]
GENERAL PARTNER [Member]
General Partner [Member]
General Partner [Member]
Number of real estate technology investment funds .
Number Of Real Estate Technology Investment Funds
Number of real estate technology investment funds
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark
Partner Type of Partners' Capital Account, Name [Domain]
Partner Type of Partners' Capital Account, Name
Mortgage Notes Payable Lump Sum Pay Offs
The cash outflow from the lump sum payment of collateralized debt obligations (backed by pledge, mortgage or other lien in the entity's assets).
Lump sum payoffs
Locked interest rate secured notes.
Locked Interest Rate Secured Notes [Member]
Locked Interest Rate Secured Notes [Member]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation
Net increase (decrease) in cash and cash equivalents and restricted deposits
Subsequent Events [Abstract]
Number of customers.
Number of customers
Number of customers contributed 10% or more of total revenue
Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Abstract]
Schedule of unconsolidated joint venture variable interest entity.
Schedule Of Unconsolidated Joint Venture Variable Interest Entity Table [Text Block]
Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs
APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition
Share options
EQR share options
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Earnings Per Share, Basic [Abstract]
Earnings per share – basic:
Amortization of Debt Issuance Costs
Amortization of deferred financing costs
Proceeds from Hedge, Financing Activities
Amount received to settle forward starting swaps
The greater of carrying value (book value) or fair market value of an entity's issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity.
Redeemable Noncontrolling Interests Operating Partnership
Redeemable Noncontrolling Interests - Operating Partnership Units
Redeemable Noncontrolling Interests - Operating Partnership Units
Redeemable noncontrolling interests - operating partnership
Redeemable Noncontrolling Interests - Operating Partnership/Redeemable Limited Partners
Disposed Properties to Unaffiliated Parties
Schedule of Subsequent Events [Table Text Block]
Organization consolidation and presentation of financial statements disclosure.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Table]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Table]
Net income after adjustments for dividends on preference units.
Net Income Loss Available To Op Unitholders Basic Diluted Numerator
Numerator for net income per Unit – basic and diluted
The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Also includes the carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.
Line Of Credit And Commercial Paper
Line of credit and commercial paper
Apartment Units
Total number of units that are associated with open development projects. May include projects that are held for and/or under development, completed and not stabilized or completed and stabilized. These units are consolidated.
Number Of Units In Various Stages Of Development
Leases [Abstract]
Document Fiscal Year Focus
Document Fiscal Year Focus
Number of customer.
Number Of Customer
Number of customer contributed 10% or more of total revenue
Same store non same store and other.
Same Store Non Same Store And Other [Member]
Same Store, Non-same Store and Other
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Share-based employee compensation expense:
Investment in real estate - acquisitions:
Investment in real estate acquisitions.
Investment in Real Estate Acquisitions [Abstract]
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Equity, Including Portion Attributable to Noncontrolling Interest
Total equity
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance
Non cash share distribution from unconsolidated entities changes in other assets.
Non Cash Share Distribution From Unconsolidated Entities Changes In Other Assets
Other assets
Accounts payable and accrued expenses
Accounts Payable And Accrued Expenses Under Consolidation Of Previously Unconsolidated Entities
Accounts payable and accrued expenses under consolidation of previously unconsolidated entities.
Financial Instruments [Domain]
Represents the change in the proportional relationship between the carrying values of Redeemable Limited Partners relative to that of Limited Partners.
Change In Carrying Value Of Redeemable Limited Partners
Change in carrying value of Redeemable Limited Partners
Statement of Comprehensive Income [Abstract]
Write Off Of Straight Line Receivables
Non-cash write-off of straight-line receivables
Write off of straight line receivables.
Change in capital as a result of a reallocation of General Partner's capital to Limited Partners due to the General Partner using Units.
Adjustment For Limited Partners Ownership In Operating Partnership
Adjustment for Limited Partners ownership in Operating Partnership
Initial measurement and reclassifications right-of-use assets.
Initial Measurement And Reclassifications Right Of Use Assets
Right-of-use assets
Trustee or Officer [Member]
Trustee or officer member.
Trustee or Officer [Member]
Right-of-use assets
Investment in real estate acquisitions, right-of-use assets.
Investment In Real Estate Acquisitions Right Of Use Assets
Proceeds from Issuance of Commercial Paper
Commercial paper proceeds
Residential and non-residential rent.
Residential And Non Residential Rent [Member]
Residential and Non-Residential Rent [Member]
Parking Revenue [Member]
Parking Revenue Member.
Parking Revenue [Member]
San Diego.
San Diego [Member]
San Diego
Schedule of Line of Credit Facilities [Table Text Block]
Schedule of Unsecured Revolving Credit Facility
Total project costs remaining.
Total Project Costs Remaining
Total project costs remaining under development commitment fund
5.25% fixed rate mortgage debt maturing in September 2033 member.
Five Point Two Five Percentage Fixed Rate Mortgage Debt Maturing in September Two Thousand and Thirty Three [Member]
5.25% Fixed Rate Mortgage Debt Maturing in September 2033 [Member]
Subsidiary, Ownership Percentage, Parent
Noncontrolling interest, ownership percentage by parent
Security Exchange Name
Security Exchange Name
Measurement Input Type [Axis]
Measurement Input Type
5.18% fixed rate mortgage debt maturing in September 2033 member.
Five Point One Eight Percentage Fixed Rate Mortgage Debt Maturing in September Two Thousand and Thirty Three [Member]
5.18% Fixed Rate Mortgage Debt Maturing in September 2033 [Member]
APIC, Share-Based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition
Issuance of restricted units/shares
EQR restricted shares
Southern California.
Southern California [Member]
Subtotal - Southern California
Properties
Properties Agreed to Acquired
Properties agreed to be acquired.
Related and Nonrelated Parties [Axis]
Related Party
New Accounting Pronouncements, Policy [Policy Text Block]
Recent Accounting Pronouncements
Preferred stock preference unit dividend rate percentage.
Preferred Stock Preference Unit Dividend Rate Percentage
Preferred Stock Preference Units Dividend Rate Percentage
Total number of rental units associated with rental properties that the company disposed of to unaffiliated third parties during the period.
Disposed Units
Property Units disposed
Apartment Units
Alexander Brackenridge [Member]
Alexander Brackenridge member.
Alexander Brackenridge [Member]
The amount of expense charged against earnings by an Entity to record deferred gains and losses on hedge instruments.
Amortization Of Deferred Settlements On Derivative Instruments [Abstract]
Amortization of deferred settlements on derivative instruments:
Entity Address, State or Province
Entity Address, State or Province
Amortization of deferred financing costs investment in real estate net.
Amortization Of Deferred Financing Costs Investment In Real Estate Net
Investment in real estate, net
Investments in unconsolidated entities development and other.
Investments In Unconsolidated Entities Development And Other [Abstract]
Investments in unconsolidated entities - development/other:
Cost of Property Repairs and Maintenance
Property and maintenance
Property and maintenance expense
Revenue from Rights Concentration Risk [Member]
Revenue Concentration Risk [Member]
Disclosure of investments in various properties with unrelated third parties which are either consolidated or accounted for under the equity method of accounting (unconsolidated).
Investments In Partially Owned Entities [Text Block]
Investments in Partially Owned Entities
Amendment Flag
Amendment Flag
Development and Lease-Up Projects and Land Held for Development (VIE) [Member]
Development and Lease Up Projects and Land Held for Development [Member]
Development and lease up projects and land held for development.
Loss Contingencies [Table]
Schedule of Derivative Instruments [Table Text Block]
Summarizes Company’s Consolidated Derivative Instruments
Present value of lessee's discounted obligation for lease payments from operating and finance lease.
Operating And Finance Lease Liability
Lease liabilities
Concentration Risk, Percentage
Concentration risk, percentage
Expense incurred, net
Expense incurred, net
Interest Expense, Debt, Total
Expense incurred, net
Rental Properties - Consolidated [Member]
Consolidated rental properties.
Consolidated Rental Properties [Member]
Supplemental Executive Retirement Plan (SERP)
Change in the value of company common shares contained in the company's supplemental executive retirement plan.
Supplemental Executive Retirement Plan Serp
Debt Instrument [Axis]
Debt Instrument
Atlanta [Member]
Atlanta.
Atlanta
Variable Interest Entity [Table]
Schedule Of Variable Interest Entities [Table]
City Area Code
City Area Code
Represents the change in the proportional relationship between the carrying values of capital associated with general partner units relative to that of the Limited Partners.
Limited Partners Change In Carrying Value
Limited Partners Change In Carrying Value
Net Income (Loss) Attributable to Noncontrolling Interest [Abstract]
Net (income) loss attributable to Noncontrolling Interests:
Stock Issued During Period, Value, Employee Stock Purchase Plan
Employee Share Purchase Plan (ESPP)
EQR's Employee Share Purchase Plan (ESPP)
General Partners' Capital Account
General Partner
General Partners' Capital Account, Total
Other Liabilities Under Consolidation Of Previously Unconsolidated Entities
Other liabilities under consolidation of previously unconsolidated entities.
Other liabilities
Dividends, Preferred Stock
Preferred distributions
Dividends, Preferred Stock, Total
Projects Held for Development [Member]
Projects held for development [Member]
Projects held for development.
Preferred Stock
Preferred Stock [Member]
Preferred Stock [Member]
Reported Value Measurement [Member]
Carrying Value [Member]
OP Units - General Partner distributions
Decrease in General Partner balance from payment of dividends or other distributions.
General Partner Distribution
Other assets
Other Assets Under Consolidation Of Previously Unconsolidated Entities
Other assets under consolidation of previously unconsolidated entities.
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Restricted cash and cash items primarily pertaining to deposits held by a joint venture to collateralize construction guarantees or miscellaneous deposits held in escrow that were assumed in conjunction with a business combination.
Restricted Deposits On Real Estate Investments
Restricted deposits on real estate investments
Class of Financing Receivable [Domain]
Class of Financing Receivable
Represents the number of shares available for issuance under the company's dividend reinvestment plan at the balance sheet date.
Number Of Shares Available For Issuance
Common shares available for issuance
Derivative instrument gain (loss) reclassified from accumulated other comprehensive income into income effective portion net
Derivative instrument gain (loss) reclassified from accumulated other comprehensive income into income effective portion net.
Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income
Partial Redemption Percentage
Partial Redemption Percentage
Partial redemption percentage
Debt Instrument, Maturity Period
Debt instrument, maturity period.
Maturity period
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net
Other Revenue [Member]
Other Revenue Member.
Other Revenue [Member]
Contributed Amount To Repay Third Party Construction Loan Encumbering Property
Contributed amount to repay third party construction loan encumbering property.
Contributed amount to repay third-party construction loan encumbering property
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity, Not Primary Beneficiary
Unconsolidated VIE [Member]
Proceeds from Secured Notes Payable
Proceeds
The difference between the book value and the sale price of land parcels sold within the period.
Gain Loss On Sales Of Land Parcels
Net gain (loss) on sales of land parcels
Net (gain) loss on sales of land parcels
Net Gain (Loss)
Other liabilities
Other liabilities
Other Liabilities, Total
Common Stock, Par or Stated Value Per Share
Common Stock, Par or Stated Value Per Share
Common stock, par value
Legal Entity [Axis]
Legal Entity
Cash and Cash Equivalents [Abstract]
Litigation Status [Axis]
Amount of amortization of other deferred financing costs net associated with mortgage notes payable, net.
Amortization Of Deferred Financing Costs Net Mortgage Notes Payable Net
Amortization of deferred financing costs, net
Number Of Projects
Number of projects.
Project
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash and cash equivalents and restricted deposits, end of period
Cash and cash equivalents and restricted deposits, beginning of period
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Tabular disclosure of the cost of land, buildings and improvements, furniture and fixtures and accumulated depreciation in aggregate for all consolidated properties owned at the balance sheet date.
Schedule Of Real Estate Investments And Accumulated Depreciation Table [Text Block]
Summary of Carrying Amounts of Investment in Real Estate
Reportable Segments
Segment Reporting [Text Block]
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Collaborative Arrangement and Arrangement Other than Collaborative
Proceeds from Sale and Maturity, Debt Security, Trading, and Equity Security, FV-NI, Held-for-Investment, Total
Proceeds from Sale and Maturity, Debt Security, Trading, and Equity Security, FV-NI, Held-for-Investment
Proceeds from sale of portion of investment securities
Decrease in Limited Partners balance from payment of dividends or other distributions.
Units Limited Partners Distributions
Units - Limited Partners distributions
Orange County [Member]
Orange County
Orange County.
Trading Symbol
Trading Symbol
Share Repurchase Program [Domain]
Share Repurchase Program
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs
Offering costs
Comprehensive income:
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Comprehensive income:
Organization consolidation and presentation of financial statements disclosure.
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Geographical [Axis]
Geographical
Mortgage notes payable and private unsecured debt.
Mortgage Notes Payable And Private Unsecured Debt [Member]
Mortgage Notes Payable And Private Unsecured Debt
Real Estate Properties [Domain]
Real Estate Properties
Entity Emerging Growth Company
Entity Emerging Growth Company
Subsegments [Axis]
PAID IN CAPITAL
Additional Paid-in Capital [Member]
Paid in Capital/General Partner Capital [Member]
Dividends [Axis]
Fair Value Measurement [Domain]
Fair Value Measurement
Disposal Group Classification [Domain]
Disposal Group Classification
Secured conventional mortgage notes period
Secured Conventional Mortgage Notes Period
Secured conventional mortgage notes period.
Portion at Fair Value Measurement [Member]
Fair Value Disclosure Item Amounts [Default]
Portion at Fair Value Measurement [Member] [Default]
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Employee Share Purchase Plan (ESPP)
Real Estate Investment Property, at Cost
Investment in real estate
Net (gain) loss on sales of land parcels
Net (Gain) Loss on Sales of Land Parcels
Net (gain) loss on sales of land parcels.
Number of Members in Board of Trustee
Number of members in board of trustee.
Number of members in board of trustee
Cover [Abstract]
Restricted cash and cash items pertaining to "like-kind" exchanges (i.e. the proceeds from the previous sale of a property are used in part or in whole to acquire a new (replacement) property).
Tax Deferred Exchange Proceeds
Tax-deferred (1031) exchange proceeds
Redeemable [Member]
Redeemable.
Adjustments to Additional Paid in Capital [Abstract]
PAID IN CAPITAL
San Francisco.
San Francisco [Member]
San Francisco
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Summary of Valuations for Each Type of Fair Value Measurement
Boston.
Boston [Member]
Boston
Equity, Attributable to Noncontrolling Interest
Balance, end of period
Balance, beginning of year
Total Noncontrolling Interests
Repairs And Maintenance [Member]
Repairs and maintenance.
Repairs and Maintenance
Same store.
Same Store [Member]
Same Store
Same Store [Member]
Preferred stock preference units dividend rate percentage
The percentage rate used to calculate dividend payments on preferred shares/preference units.
Preferred Stock Preference Units Dividend Rate Percentage
Preferred Stock Preference Units Dividend Rate Percentage
Partially owned.
Partially Owned [Member]
PARTIALLY OWNED PROPERTIES
Long-Term Debt, Type [Domain]
Long-Term Debt, Type
Segment Reporting, Reconciliation [Abstract]
Percentage interest acquired in consolidated operating property.
Percentage Interest Acquired In Consolidated Operating Property
Percentage interest in consolidated operating property
Real Estate Investment Property, Accumulated Depreciation
Accumulated depreciation
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Real Estate Investment Property, Net
Investment in real estate, net
Represents the noncontrolling interests (comprised of Units and LTIP Units) ownership interest in the Operating Partnership.
Units Ownership Interest In Operating Partnership
Units Ownership Interest in Operating Partnership
Stock issued during period value share options in-lieu of bonus.
Stock Issued During Period Value Share Options In Lieu Of Bonus
Share options in-lieu of bonus
Represents the charge against earnings for the indirect costs incurred from a material business combination such as severance and retention bonuses.
Income Loss From Equity Method Investments Merger
Investments in unconsolidated entities
Investments in unconsolidated entities - development/other
Investments in unconsolidated entities - development/other
Payments To Acquire Equity Method Investments development and Other
Payments to acquire equity method investments development and other.
Share-Based Payment Arrangement, Noncash Expense
Compensation paid with Company Common Shares
Share-Based Payment Arrangement, Noncash Expense, Total
Additional Paid in Capital
Paid in capital
Additional Paid in Capital, Total
Forward sales agreements.
Forward Sales Agreements [Member]
Forward Sales Agreements [Member]
ERP operating limited partnership.
E R P O P [Member]
ERPOP [Member]
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net income to net cash provided by operating activities:
Fair Value Disclosures [Abstract]
Cash and Cash Equivalent
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
OP Units repurchased and retired
Common shares repurchased and retired
Stock Repurchased and Retired During Period, Value
Common shares repurchased and retired
LIMITED PARTNERS [Member]
Limited Partner [Member]
Limited Partner
OPERATING PARTNERSHIP
Noncontrolling Interest [Member]
Noncontrolling Interests [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by (used for) financing activities
Adjustment to additional paid in capital resulting from conversion of capital units.
Adjustment To Additional Paid In Capital Resulting From Conversion Of Capital Units
Conversion of OP Units into Common Shares
Discontinued Operations and Disposal Groups [Abstract]
At the market forward sales.
At The Market Forward Sales
ATM forward sales
Other cash and cash items not otherwise listed in the existing taxonomy that are pledged or subject to withdrawal restrictions.
Other Restricted Cash
Other
Net Income (Loss) Available to Common Stockholders, Basic
Net income available to Common Shares
Common Shares Repurchased and Retired
Common shares repurchased and retired.
Common shares repurchased and retired
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Line Items]
APIC, Share-Based Payment Arrangement, Other, Increase for Cost Recognition
Equity compensation associated with Noncontrolling Interests
Equity compensation associated with Units - Limited Partners
Entity Filer Category
Entity Filer Category
2.24% fixed rate mortgage debt maturing in September 2030 member.
Two Point Two Four Percentage Fixed Rate Mortgage Debt Maturing in September Two Thousand and Thirty [Member]
2.24% Fixed Rate Mortgage Debt Maturing in September 2030 [Member]
Debt Instrument, Name [Domain]
Debt Instrument, Name
Notes issued
Unsecured Debt, Total
Unsecured Debt
Debt instrument maturity year, end.
Debt Instrument Maturity Year End
Maturity Date Ranges, End
Limited Partners' Capital Account
Limited Partners
Limited Partners' Capital Account, Total
Minority interest increase from contributions by non-controlling interests partially owned properties.
Minority Interest Increase From Contributions By Noncontrolling Interests Partially Owned Properties
Contributions by Noncontrolling Interests
Non-real estate capital additions.
Non Real Estate Capital Additions
Non-real estate capital additions
Real Estate Technology Funds/Companies (VIE) [Member]
Real estate technology funds companies.
Real Estate Technology Funds Companies [Member]
Interest Expense, Operating and Nonoperating [Abstract]
Interest:
Initial measurement and reclassifications lease liabilities.
Initial Measurement And Reclassifications Lease Liabilities
Lease liabilities
Dividends, Common Stock [Abstract]
DISTRIBUTIONS
Real Estate Property Ownership [Axis]
Real Estate Property Ownership
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Unrealized holding gains (losses) arising during the period
Accumulated other comprehensive income
Other rental income.
Other Rental Income [Member]
Other Rental Income [Member]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
DISTRIBUTIONS
Distributions [Member]
DISTRIBUTIONS [Member]
Distributions.
Document Information [Line Items]
Document Information [Line Items]
Segment Reporting [Abstract]
Proceeds from (payments on) settlement of derivative instruments, other liabilities.
Proceeds From (Payments On) Settlement Of Derivative Instruments, Other Liabilities
Other liabilities
Premium on redemption of Preference Units
Premium On Redemption Of Preference Units
Premium on redemption of preference units.
Premium on redemption of Preference Units
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Statement of Financial Position [Abstract]
Restricted cash and cash items pertaining to security deposits and utility deposits from residents.
Resident Security And Utility Deposits
Resident security and utility deposits
Credit enhanced debt.
Credit Enhanced Debt [Member]
Credit Enhanced Debt [Member]
Local Phone Number
Local Phone Number
Merger Agreement [Member]
Merger agreement.