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CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
REVENUES |  |  |
Rental income | $ 2,605,311,000 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue | $ 2,378,004,000 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue | $ 1,737,929,000 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
Fee and asset management | 9,437,000 us-gaap_ManagementFeesRevenue | 9,698,000 us-gaap_ManagementFeesRevenue | 9,573,000 us-gaap_ManagementFeesRevenue
Total revenues | 2,614,748,000 us-gaap_Revenues | 2,387,702,000 us-gaap_Revenues | 1,747,502,000 us-gaap_Revenues
EXPENSES |  |  |
Property and maintenance | 473,098,000 us-gaap_CostOfPropertyRepairsAndMaintenance | 449,427,000 us-gaap_CostOfPropertyRepairsAndMaintenance | 332,219,000 us-gaap_CostOfPropertyRepairsAndMaintenance
Real estate taxes and insurance | 325,401,000 us-gaap_RealEstateTaxesAndInsurance | 293,999,000 us-gaap_RealEstateTaxesAndInsurance | 206,723,000 us-gaap_RealEstateTaxesAndInsurance
Property management | 79,636,000 us-gaap_OwnedPropertyManagementCosts | 84,342,000 us-gaap_OwnedPropertyManagementCosts | 81,902,000 us-gaap_OwnedPropertyManagementCosts
Fee and asset management | 5,429,000 us-gaap_ServiceManagementCosts | 6,460,000 us-gaap_ServiceManagementCosts | 4,663,000 us-gaap_ServiceManagementCosts
Depreciation | 758,861,000 us-gaap_Depreciation | 978,973,000 us-gaap_Depreciation | 560,669,000 us-gaap_Depreciation
General and administrative | 50,948,000 us-gaap_GeneralAndAdministrativeExpense | 62,179,000 us-gaap_GeneralAndAdministrativeExpense | 47,233,000 us-gaap_GeneralAndAdministrativeExpense
Total expenses | 1,693,373,000 us-gaap_CostsAndExpenses | 1,875,380,000 us-gaap_CostsAndExpenses | 1,233,409,000 us-gaap_CostsAndExpenses
Operating income | 921,375,000 us-gaap_OperatingIncomeLoss | 512,322,000 us-gaap_OperatingIncomeLoss | 514,093,000 us-gaap_OperatingIncomeLoss
Interest and other income | 4,462,000 us-gaap_InterestAndOtherIncome | 5,283,000 us-gaap_InterestAndOtherIncome | 151,060,000 us-gaap_InterestAndOtherIncome
Other expenses | (9,073,000)us-gaap_OtherNonoperatingExpense | (29,630,000)us-gaap_OtherNonoperatingExpense | (27,796,000)us-gaap_OtherNonoperatingExpense
Interest: |  |  |
Expense incurred, net | (457,191,000)us-gaap_InterestExpenseDebt | (586,854,000)us-gaap_InterestExpenseDebt | (455,236,000)us-gaap_InterestExpenseDebt
Amortization of deferred financing costs | (11,088,000)us-gaap_AmortizationOfFinancingCosts | (22,197,000)us-gaap_AmortizationOfFinancingCosts | (21,295,000)us-gaap_AmortizationOfFinancingCosts
Income (loss) before income and other taxes, (loss) from investments in unconsolidated entities, net gain on sales of real estate properties and land parcels and discontinued operations | 448,485,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (121,076,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 160,826,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income and other tax (expense) benefit | (1,394,000)us-gaap_IncomeTaxExpenseBenefit | (1,169,000)us-gaap_IncomeTaxExpenseBenefit | (514,000)us-gaap_IncomeTaxExpenseBenefit
(Loss) from investments in unconsolidated entities | (7,952,000)us-gaap_IncomeLossFromEquityMethodInvestments | (58,156,000)us-gaap_IncomeLossFromEquityMethodInvestments | (14,000)us-gaap_IncomeLossFromEquityMethodInvestments
Net gain on sales of real estate properties | 212,685,000 us-gaap_RealEstateRevenueNet | 0 us-gaap_RealEstateRevenueNet | 0 us-gaap_RealEstateRevenueNet
Net gain on sales of land parcels | 5,277,000 eqr_GainLossOnSaleOfLandParcels | 12,227,000 eqr_GainLossOnSaleOfLandParcels | 0 eqr_GainLossOnSaleOfLandParcels
Income (loss) from continuing operations | 657,101,000 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | (168,174,000)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 160,298,000 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Discontinued operations, net | 1,582,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 2,073,527,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 720,906,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net income | 658,683,000 us-gaap_ProfitLoss | 1,905,353,000 us-gaap_ProfitLoss | 881,204,000 us-gaap_ProfitLoss
Net (income) loss attributable to Noncontrolling Interests - Partially Owned Properties | (2,544,000)eqr_AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties | 538,000 eqr_AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties | (844,000)eqr_AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties
Net income attributable to controlling interests | 631,308,000 us-gaap_NetIncomeLoss | 1,830,613,000 us-gaap_NetIncomeLoss | 841,719,000 us-gaap_NetIncomeLoss
ALLOCATION OF NET INCOME: |  |  |
Preference Units | (4,145,000)eqr_DividendsPreferenceUnits | (4,145,000)eqr_DividendsPreferenceUnits | (10,355,000)eqr_DividendsPreferenceUnits
Premium on redemption of Preference Units | 0 us-gaap_RedemptionPremium | 0 us-gaap_RedemptionPremium | 5,152,000 us-gaap_RedemptionPremium
Earnings per Unit – basic: |  |  |
Income (loss) from continuing operations | $ 1.732 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ (0.466)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.454 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Net income available to Units | $ 1.736 us-gaap_EarningsPerShareBasic | $ 5.155 us-gaap_EarningsPerShareBasic | $ 2.729 us-gaap_EarningsPerShareBasic
Earnings per Unit – diluted: |  |  |
Income (loss) from continuing operations available to Units | $ 1.722 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ (0.466)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.450 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Net income available to Units | $ 1.726 us-gaap_EarningsPerShareDiluted | $ 5.155 us-gaap_EarningsPerShareDiluted | $ 2.705 us-gaap_EarningsPerShareDiluted
Distributions declared per Unit outstanding | $ 2.000 us-gaap_CommonStockDividendsPerShareDeclared | $ 1.850 us-gaap_CommonStockDividendsPerShareDeclared | $ 1.780 us-gaap_CommonStockDividendsPerShareDeclared
Partnership Interest [Member] |  |  |
REVENUES |  |  |
Rental income | 2,605,311,000 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 2,378,004,000 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,737,929,000 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Fee and asset management | 9,437,000 us-gaap_ManagementFeesRevenue / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 9,698,000 us-gaap_ManagementFeesRevenue / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 9,573,000 us-gaap_ManagementFeesRevenue / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Total revenues | 2,614,748,000 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 2,387,702,000 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,747,502,000 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
EXPENSES |  |  |
Property and maintenance | 473,098,000 us-gaap_CostOfPropertyRepairsAndMaintenance / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 449,427,000 us-gaap_CostOfPropertyRepairsAndMaintenance / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 332,219,000 us-gaap_CostOfPropertyRepairsAndMaintenance / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Real estate taxes and insurance | 325,401,000 us-gaap_RealEstateTaxesAndInsurance / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 293,999,000 us-gaap_RealEstateTaxesAndInsurance / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 206,723,000 us-gaap_RealEstateTaxesAndInsurance / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Property management | 79,636,000 us-gaap_OwnedPropertyManagementCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 84,342,000 us-gaap_OwnedPropertyManagementCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 81,902,000 us-gaap_OwnedPropertyManagementCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Fee and asset management | 5,429,000 us-gaap_ServiceManagementCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 6,460,000 us-gaap_ServiceManagementCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 4,663,000 us-gaap_ServiceManagementCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Depreciation | 758,861,000 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 978,973,000 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 560,669,000 us-gaap_Depreciation / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
General and administrative | 50,948,000 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 62,179,000 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 47,233,000 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Total expenses | 1,693,373,000 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,875,380,000 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,233,409,000 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Operating income | 921,375,000 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 512,322,000 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 514,093,000 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Interest and other income | 4,462,000 us-gaap_InterestAndOtherIncome / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 5,283,000 us-gaap_InterestAndOtherIncome / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 151,060,000 us-gaap_InterestAndOtherIncome / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Other expenses | (9,073,000)us-gaap_OtherNonoperatingExpense / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (29,630,000)us-gaap_OtherNonoperatingExpense / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (27,796,000)us-gaap_OtherNonoperatingExpense / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Interest: |  |  |
Expense incurred, net | (457,191,000)us-gaap_InterestExpenseDebt / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (586,854,000)us-gaap_InterestExpenseDebt / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (455,236,000)us-gaap_InterestExpenseDebt / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Amortization of deferred financing costs | (11,088,000)us-gaap_AmortizationOfFinancingCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (22,197,000)us-gaap_AmortizationOfFinancingCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (21,295,000)us-gaap_AmortizationOfFinancingCosts / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Income (loss) before income and other taxes, (loss) from investments in unconsolidated entities, net gain on sales of real estate properties and land parcels and discontinued operations | 448,485,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (121,076,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 160,826,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Income and other tax (expense) benefit | (1,394,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (1,169,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (514,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
(Loss) from investments in unconsolidated entities | (7,952,000)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (58,156,000)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (14,000)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net gain on sales of real estate properties | 212,685,000 us-gaap_RealEstateRevenueNet / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 0 us-gaap_RealEstateRevenueNet / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 0 us-gaap_RealEstateRevenueNet / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net gain on sales of land parcels | 5,277,000 eqr_GainLossOnSaleOfLandParcels / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 12,227,000 eqr_GainLossOnSaleOfLandParcels / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 0 eqr_GainLossOnSaleOfLandParcels / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Income (loss) from continuing operations | 657,101,000 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (168,174,000)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 160,298,000 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Discontinued operations, net | 1,582,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 2,073,527,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 720,906,000 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net income | 658,683,000 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,905,353,000 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 881,204,000 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net (income) loss attributable to Noncontrolling Interests - Partially Owned Properties | (2,544,000)eqr_AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 538,000 eqr_AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | (844,000)eqr_AllocationOfNetIncomeLossToNoncontrollingInterestsPartiallyOwnedProperties / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net income attributable to controlling interests | 656,139,000 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,905,891,000 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 880,360,000 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
ALLOCATION OF NET INCOME: |  |  |
Preference Units | 4,145,000 eqr_DividendsPreferenceUnits / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 4,145,000 eqr_DividendsPreferenceUnits / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 10,355,000 eqr_DividendsPreferenceUnits / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Premium on redemption of Preference Units | 0 us-gaap_RedemptionPremium / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 0 us-gaap_RedemptionPremium / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 5,152,000 us-gaap_RedemptionPremium / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
General Partner | 627,163,000 us-gaap_NetIncomeLossAllocatedToGeneralPartners / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 1,826,468,000 us-gaap_NetIncomeLossAllocatedToGeneralPartners / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 826,212,000 us-gaap_NetIncomeLossAllocatedToGeneralPartners / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Limited Partners | 24,831,000 us-gaap_NetIncomeLossAllocatedToLimitedPartners / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 75,278,000 us-gaap_NetIncomeLossAllocatedToLimitedPartners / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 38,641,000 us-gaap_NetIncomeLossAllocatedToLimitedPartners / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net income available to Units | $ 651,994,000 us-gaap_IncomeLossIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 1,901,746,000 us-gaap_IncomeLossIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 864,853,000 us-gaap_IncomeLossIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Earnings per Unit – basic: |  |  |
Income (loss) from continuing operations | $ 1.732 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ (0.466)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 0.454 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net income available to Units | $ 1.736 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 5.155 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 2.729 us-gaap_EarningsPerShareBasic / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Weighted average Units outstanding | 374,899 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 368,038 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 316,554 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Earnings per Unit – diluted: |  |  |
Income (loss) from continuing operations available to Units | $ 1.722 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ (0.466)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 0.450 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Net income available to Units | $ 1.726 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 5.155 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 2.705 us-gaap_EarningsPerShareDiluted / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Weighted average Units outstanding | 377,735 eqr_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingDiluted / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 368,038 eqr_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingDiluted / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | 319,766 eqr_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingDiluted / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember
Distributions declared per Unit outstanding | $ 2.000 us-gaap_CommonStockDividendsPerShareDeclared / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 1.850 us-gaap_CommonStockDividendsPerShareDeclared / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember | $ 1.780 us-gaap_CommonStockDividendsPerShareDeclared / dei_LegalEntityAxis = us-gaap_PartnershipInterestMember

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- Definition The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share. + References No definition available. + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Definition The aggregate costs related to delivering management services during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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