XML 50 R45.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Real Estate (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Land | $ 6,357,580 us-gaap_Land |  | $ 6,295,404 us-gaap_Land
Property, Plant and Equipment, Gross [Abstract] |  |  |
Investment Building and Building Improvements | 18,109,892 us-gaap_InvestmentBuildingAndBuildingImprovements |  | 17,974,337 us-gaap_InvestmentBuildingAndBuildingImprovements
Fixtures and Equipment, Gross | 1,401,801 us-gaap_FixturesAndEquipmentGross |  | 1,365,276 us-gaap_FixturesAndEquipmentGross
Finite-Lived Intangible Asset, Acquired-in-Place Leases | 512,804 us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases |  | 511,891 us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases
Projects under development -CIP | 1,269,784 us-gaap_DevelopmentInProcess |  | 1,343,919 us-gaap_DevelopmentInProcess
Land Available for Development | 143,997 us-gaap_LandAvailableForDevelopment |  | 184,556 us-gaap_LandAvailableForDevelopment
Investment in real estate | 27,795,858 us-gaap_RealEstateInvestmentPropertyAtCost |  | 27,675,383 us-gaap_RealEstateInvestmentPropertyAtCost
Real Estate Investment Property, Accumulated Depreciation | (5,600,485)us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation |  | (5,432,805)us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation
Investment in real estate, net | 22,195,373 us-gaap_RealEstateInvestmentPropertyNet |  | 22,242,578 us-gaap_RealEstateInvestmentPropertyNet
Finite-Lived Intangible Assets, Gross | 179,511 us-gaap_FiniteLivedIntangibleAssetsGross |  | 179,511 us-gaap_FiniteLivedIntangibleAssetsGross
Amortization of Intangible Assets | (10,050)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  | (8,913)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Lease Intangible Assets, Net | 169,461 us-gaap_FiniteLivedIntangibleAssetsNet |  | 170,598 us-gaap_FiniteLivedIntangibleAssetsNet
Lease Intangible Liabilities | 7,670 eqr_LeaseIntangibleLiabilities |  | 7,670 eqr_LeaseIntangibleLiabilities
Amortization Of Intangible Liabilities | (2,549)eqr_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization |  | (2,258)eqr_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization
Lease Intangible Liabilities, net | 5,121 eqr_LeaseIntangibleLiabilitiesnet |  | 5,412 eqr_LeaseIntangibleLiabilitiesnet
Amortization of above/below market leases | 846 us-gaap_AmortizationOfIntangibleAssets | 829 us-gaap_AmortizationOfIntangibleAssets |
Weighted Average Ground Lease Amortization Period | 49.8 eqr_WeightedAverageGroundLeaseAmortizationPeriod |  |
Weighted Average Retail Lease Amortization Period | 2.8 eqr_WeightedAverageRetailLeaseAmortizationPeriod |  |
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year | 2,536 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 3,425 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 3,781 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 4,250 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 4,250 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 4,250 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |  |
Retail Site [Member] |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |
Amortization of above/below market leases | 200 us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember | 300 us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year | (705)us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | (896)us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | (540)us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | (71)us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | (71)us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | (71)us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive / us-gaap_StatementScenarioAxis = us-gaap_RetailSiteMember |  |
Assets [Member] |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |
Below Market Lease, Gross | 178,251 us-gaap_BelowMarketLeaseGross / us-gaap_StatementScenarioAxis = us-gaap_AssetsMember |  | 178,251 us-gaap_BelowMarketLeaseGross / us-gaap_StatementScenarioAxis = us-gaap_AssetsMember
Finite-Lived Intangible Asset, Off-market Lease, Favorable, Gross | 1,260 us-gaap_FiniteLivedIntangibleAssetOffMarketLeaseFavorableGross / us-gaap_StatementScenarioAxis = us-gaap_AssetsMember |  | 1,260 us-gaap_FiniteLivedIntangibleAssetOffMarketLeaseFavorableGross / us-gaap_StatementScenarioAxis = us-gaap_AssetsMember
Liability [Member] |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |
Below Market Lease, Gross | 5,270 us-gaap_BelowMarketLeaseGross / us-gaap_StatementScenarioAxis = us-gaap_LiabilityMember |  | 5,270 us-gaap_BelowMarketLeaseGross / us-gaap_StatementScenarioAxis = us-gaap_LiabilityMember
Off-market Lease, Unfavorable | 2,400 us-gaap_OffMarketLeaseUnfavorable / us-gaap_StatementScenarioAxis = us-gaap_LiabilityMember |  | 2,400 us-gaap_OffMarketLeaseUnfavorable / us-gaap_StatementScenarioAxis = us-gaap_LiabilityMember
Ground Lease [Member] |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |
Amortization of above/below market leases | 1,100 us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember | 1,100 us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year | 3,241 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 4,321 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 4,321 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 4,321 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 4,321 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | 4,321 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive / us-gaap_StatementScenarioAxis = eqr_GroundLeaseMember |  |
Projects under development [Member] |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |
Projects under development - Land | 423,359 eqr_LandUnderDevelopment / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_ProjectsUnderDevelopmentMember |  | 466,764 eqr_LandUnderDevelopment / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_ProjectsUnderDevelopmentMember
Projects under development -CIP | 846,425 us-gaap_DevelopmentInProcess / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_ProjectsUnderDevelopmentMember |  | 877,155 us-gaap_DevelopmentInProcess / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_ProjectsUnderDevelopmentMember
Land held for development [Member] |  |  |
Property, Plant and Equipment, Gross [Abstract] |  |  |
Projects under development -CIP | 34,271 us-gaap_DevelopmentInProcess / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_LandHeldForDevelopmentMember |  | 39,190 us-gaap_DevelopmentInProcess / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_LandHeldForDevelopmentMember
Land Available for Development | $ 109,726 us-gaap_LandAvailableForDevelopment / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_LandHeldForDevelopmentMember |  | $ 145,366 us-gaap_LandAvailableForDevelopment / eqr_RealEstateAndAccumulatedDepreciationTypesOfPropertyAxis = eqr_LandHeldForDevelopmentMember

X
- Definition The accumulated amount of amortization of a major finite-lived intangible liabilities class. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

X
- Definition Carrying amount of land for a real estate project that has not yet been completed. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition The amount of acquisition cost of a business combination allocated to total lease intangible liabilities that will be amortized. + References No definition available. + Details
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Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of acquisition cost of a business combination allocated to total lease intangible liabilities, net of amortization. + References No definition available. + Details
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Namespace Prefix: | eqr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the weighted average amortization period over which above and below ground lease intangibles will be amortized. + References No definition available. + Details
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Namespace Prefix: | eqr_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the weighted average amortization period over which above and below retail lease intangibles will be amortized. + References No definition available. + Details
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Namespace Prefix: | eqr_
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Balance Type: | debit
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- Definition Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
Name: | us-gaap_BelowMarketLeaseGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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X
- Definition This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired. + References No definition available. + Details
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Balance Type: | debit
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- Definition This element represents the identifiable intangible asset established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.15) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before accumulated depreciation of fixtures and equipment. Includes, but is not limited to, machinery, equipment, and engines. + References No definition available. + Details
Name: | us-gaap_FixturesAndEquipmentGross
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Definition Carrying amount of land available for development. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph d -Article 7 + Details
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Balance Type: | debit
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- Definition This element represents a liability associated with the acquisition of an off-market lease when the terms of the lease are unfavorable to the market terms for the lease at the date of acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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Balance Type: | na
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- Definition The cumulative amount of depreciation for real estate property held for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(3)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 7 + Details
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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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