2.3.0.15 Html 372 454 1 false 108 0 false 11 true false R1.htm 00 - Document - Document and Entity Information Sheet http://udr.com/role/DocumentAndEntityInformation Document and Entity Information false false R2.htm 0110 - Statement - Consolidated Balance Sheets Sheet http://udr.com/role/BalanceSheets Consolidated Balance Sheets false false R3.htm 0111 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://udr.com/role/BalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) false false R4.htm 0112 - Statement - Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) Sheet http://udr.com/role/BalanceSheetsUdrlp Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) false false R5.htm 0113 - Statement - Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) (Parenthetical) Sheet http://udr.com/role/BalanceSheetsUdrlpParenthetical Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) (Parenthetical) false false R6.htm 0120 - Statement - Consolidated Statements of Operations (Unaudited) Sheet http://udr.com/role/StatementsOfOperations Consolidated Statements of Operations (Unaudited) false false R7.htm 0121 - Statement - Consolidated Statements of Operations (UNITED DOMINION REALTY, L.P) Sheet http://udr.com/role/StatementsOfOperationsUdrlp Consolidated Statements of Operations (UNITED DOMINION REALTY, L.P) false false R8.htm 0130 - Statement - Consolidated Statements of Equity and Comprehensive Income/(Loss) (Unaudited) Sheet http://udr.com/role/StatementsOfStockholdersEquityAndComprehensiveIncome Consolidated Statements of Equity and Comprehensive Income/(Loss) (Unaudited) false false R9.htm 0131 - Statement - Consolidated Statements of Equity and Comprehensive Income/(Loss) (Unaudited) (Parenthetical) Sheet http://udr.com/role/StatementsOfStockholdersEquityAndComprehensiveIncomeParenthetical Consolidated Statements of Equity and Comprehensive Income/(Loss) (Unaudited) (Parenthetical) false false R10.htm 0132 - Statement - Consolidated Statement of Capital and Comprehensive Income/(Loss) (UNITED DOMINION REALTY, L.P) (Unaudited) Sheet http://udr.com/role/StatementOfPartnersCapitalAndComprehensiveLossUdrlp Consolidated Statement of Capital and Comprehensive Income/(Loss) (UNITED DOMINION REALTY, L.P) (Unaudited) false false R11.htm 0140 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://udr.com/role/StatementsOfCashFlows Consolidated Statements of Cash Flows (Unaudited) false false R12.htm 0141 - Statement - Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) Sheet http://udr.com/role/StatementsOfCashFlowsParenthetical Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) false false R13.htm 0142 - Statement - Consolidated Statements of Cash Flows (UNITED DOMINION REALTY, L.P) (Unaudited) Sheet http://udr.com/role/StatementsOfCashFlowsUdrlp Consolidated Statements of Cash Flows (UNITED DOMINION REALTY, L.P) (Unaudited) false false R14.htm 0201 - Disclosure - Consolidation and Basis of Presentation Sheet http://udr.com/role/ConsolidationAndBasisOfPresentation Consolidation and Basis of Presentation false false R15.htm 0202 - Disclosure - Significant Accounting Policies Sheet http://udr.com/role/SignificantAccountingPolicies Significant Accounting Policies false false R16.htm 0203 - Disclosure - Real Estate Owned Sheet http://udr.com/role/RealEstateOwned Real Estate Owned false false R17.htm 0204 - Disclosure - Discontinued Operations Sheet http://udr.com/role/DiscontinuedOperations Discontinued Operations false false R18.htm 0205 - Disclosure - Joint Ventures Sheet http://udr.com/role/JointVentures Joint Ventures false false R19.htm 0206 - Disclosure - Secured Debt Sheet http://udr.com/role/SecuredDebt Secured Debt false false R20.htm 0207 - Disclosure - Unsecured Debt Sheet http://udr.com/role/UnsecuredDebt Unsecured Debt false false R21.htm 0208 - Disclosure - Earnings/(Loss) Per Share Sheet http://udr.com/role/LossPerShare Earnings/(Loss) Per Share false false R22.htm 0209 - Disclosure - Noncontrolling Interests Sheet http://udr.com/role/NoncontrollingInterests Noncontrolling Interests false false R23.htm 0210 - Disclosure - Fair Value of Derivatives and Financial Instruments Sheet http://udr.com/role/FairValueOfDerivativesAndFinancialInstruments Fair Value of Derivatives and Financial Instruments false false R24.htm 0211 - Disclosure - Derivatives and Hedging Activity Sheet http://udr.com/role/DerivativesAndHedgingActivity Derivatives and Hedging Activity false false R25.htm 0212 - Disclosure - Other Comprehensive Loss Sheet http://udr.com/role/OtherComprehensiveLoss Other Comprehensive Loss false false R26.htm 0213 - Disclosure - Stock Based Compensation Sheet http://udr.com/role/StockBasedCompensation Stock Based Compensation false false R27.htm 0214 - Disclosure - Commitments and Contingencies Sheet http://udr.com/role/CommitmentsAndContingencies Commitments and Contingencies false false R28.htm 0215 - Disclosure - Reportable Segments Sheet http://udr.com/role/ReportableSegments Reportable Segments false false R29.htm 0216 - Disclosure - Subsequent Events Sheet http://udr.com/role/SubsequentEvent Subsequent Events false false R30.htm 0217 - Disclosure - Debt Sheet http://udr.com/role/Debt Debt false false R31.htm 0218 - Disclosure - Related Party Transactions Sheet http://udr.com/role/RELATEDPARTYTRANSACTIONS Related Party Transactions false false R32.htm 0219 - Disclosure - Capital Structure Sheet http://udr.com/role/CAPITALSTRUCTURE Capital Structure false false R33.htm 0401 - Disclosure - Significant Accounting Policies (Policies) Sheet http://udr.com/role/SignificantAccountingPoliciesPolicies Significant Accounting Policies (Policies) false false R34.htm 0503 - Disclosure - Real Estate Owned (Tables) Sheet http://udr.com/role/RealEstateOwnedTables Real Estate Owned (Tables) false false R35.htm 0504 - Disclosure - Discontinued Operations (Tables) Sheet http://udr.com/role/DiscontinuedOperationsTables Discontinued Operations (Tables) false false R36.htm 0505 - Disclosure - Joint Ventures (Tables) Sheet http://udr.com/role/JointVenturesTables Joint Ventures (Tables) false false R37.htm 0506 - Disclosure - Secured Debt (Tables) Sheet http://udr.com/role/SecuredDebtTables Secured Debt (Tables) false false R38.htm 0507 - Disclosure - Unsecured Debt (Tables) Sheet http://udr.com/role/UnsecuredDebtTables Unsecured Debt (Tables) false false R39.htm 0508 - Disclosure - Earnings/(Loss) Per Share (Tables) Sheet http://udr.com/role/LossPerShareTables Earnings/(Loss) Per Share (Tables) false false R40.htm 0509 - Disclosure - Noncontrolling Interests (Tables) Sheet http://udr.com/role/NoncontrollingInterestsTables Noncontrolling Interests (Tables) false false R41.htm 0510 - Disclosure - Fair Value of Derivatives and Financial Instruments (Tables) Sheet http://udr.com/role/FairValueOfDerivativesAndFinancialInstrumentsTables Fair Value of Derivatives and Financial Instruments (Tables) false false R42.htm 0511 - Disclosure - Derivatives and Hedging Activity (Tables) Sheet http://udr.com/role/DerivativesAndHedgingActivityTables Derivatives and Hedging Activity (Tables) false false R43.htm 0512 - Disclosure - Other Comprehensive Loss (Tables) Sheet http://udr.com/role/OtherComprehensiveLossTables Other Comprehensive Loss (Tables) false false R44.htm 0514 - Disclosure - Commitment and Contingencies (Tables) Sheet http://udr.com/role/CommitmentAndContingenciesTables Commitment and Contingencies (Tables) false false R45.htm 0515 - Disclosure - Reportable Segment (Tables) Sheet http://udr.com/role/ReportableSegmentTables Reportable Segment (Tables) false false R46.htm 0601 - Disclosure - Consolidation and Basis of Presentation (Details) Sheet http://udr.com/role/ConsolidationAndBasisOfPresentationDetails Consolidation and Basis of Presentation (Details) false false R47.htm 0602 - Disclosure - Significant Accounting Policies (Details) Sheet http://udr.com/role/SignificantAccountingPoliciesDetails Significant Accounting Policies (Details) false false R48.htm 0603 - Disclosure - Real Estate Owned (Details) Sheet http://udr.com/role/RealEstateOwnedDetails Real Estate Owned (Details) false false R49.htm 06031 - Disclosure - Real Estate Owned (Details 1) Sheet http://udr.com/role/RealEstateOwnedDetails1 Real Estate Owned (Details 1) false false R50.htm 06032 - Disclosure - Real Estate Owned (Details 2) Sheet http://udr.com/role/RealEstateOwnedDetails2 Real Estate Owned (Details 2) false false R51.htm 06033 - Disclosure - Real Estate Owned (Details Textual) Sheet http://udr.com/role/RealEstateOwnedDetailsTextual Real Estate Owned (Details Textual) false false R52.htm 0604 - Disclosure - Discontinued Operations (Details) Sheet http://udr.com/role/DiscontinuedOperationsDetails Discontinued Operations (Details) false false R53.htm 0605 - Disclosure - Joint Ventures (Details) Sheet http://udr.com/role/JointVenturesDetails Joint Ventures (Details) false false R54.htm 06051 - Disclosure - Joint Ventures (Details Textual) Sheet http://udr.com/role/JointVenturesDetailsTextuals Joint Ventures (Details Textual) false false R55.htm 0606 - Disclosure - Secured Debt (Details) Sheet http://udr.com/role/SecuredDebtDetails Secured Debt (Details) false false R56.htm 06061 - Disclosure - Secured Debt (Details 1) Sheet http://udr.com/role/SecuredDebtDetails1 Secured Debt (Details 1) false false R57.htm 06062 - Disclosure - Secured Debt (Details 2) Sheet http://udr.com/role/SecuredDebtDetails2 Secured Debt (Details 2) false false R58.htm 06063 - Disclosure - Secured Debt (Details Textual) Sheet http://udr.com/role/SecuredDebtDetailsTextual Secured Debt (Details Textual) false false R59.htm 0607 - Disclosure - Unsecured Debt (Details) Sheet http://udr.com/role/UnsecuredDebtDetails Unsecured Debt (Details) false false R60.htm 06071 - Disclosure - Unsecured Debt (Details 1) Sheet http://udr.com/role/UnsecuredDebtDetails1 Unsecured Debt (Details 1) false false R61.htm 06072 - Disclosure - Unsecured Debt (Details 2) Sheet http://udr.com/role/UnsecuredDebtDetails2 Unsecured Debt (Details 2) false false R62.htm 06073 - Disclosure - Unsecured Debt (Details Textual) Sheet http://udr.com/role/UnsecuredDebtDetailsTextual Unsecured Debt (Details Textual) false false R63.htm 0608 - Disclosure - Earnings/(Loss) Per Share (Details) Sheet http://udr.com/role/LossPerShareDetails Earnings/(Loss) Per Share (Details) false false R64.htm 0609 - Disclosure - Noncontrolling Interests (Details) Sheet http://udr.com/role/NoncontrollingInterestsDetails Noncontrolling Interests (Details) false false R65.htm 0610 - Disclosure - Fair Value of Derivatives and Financial Instruments (Details) Sheet http://udr.com/role/FairValueOfDerivativesAndFinancialInstrumentsDetails Fair Value of Derivatives and Financial Instruments (Details) false false R66.htm 06101 - Disclosure - Fair Value of Derivatives and Financial Instruments (Details Textual) Sheet http://udr.com/role/FairValueOfDerivativesAndFinancialInstrumentsDetailsTextual Fair Value of Derivatives and Financial Instruments (Details Textual) false false R67.htm 0611 - Disclosure - Derivatives and Hedging Activity (Details) Sheet http://udr.com/role/DerivativesAndHedgingActivityDetails Derivatives and Hedging Activity (Details) false false R68.htm 06111 - Disclosure - Derivatives and Hedging Activity (Details 1) Sheet http://udr.com/role/DerivativesAndHedgingActivityDetails1 Derivatives and Hedging Activity (Details 1) false false R69.htm 06112 - Disclosure - Derivatives and Hedging Activity (Details 2) Sheet http://udr.com/role/DerivativesAndHedgingActivityDetails2 Derivatives and Hedging Activity (Details 2) false false R70.htm 06113 - Disclosure - Derivatives and Hedging Activity (Details Textual) Sheet http://udr.com/role/DerivativesAndHedgingActivityDetailsTextual Derivatives and Hedging Activity (Details Textual) false false R71.htm 0612 - Disclosure - Other Comprehensive Loss (Details) Sheet http://udr.com/role/OtherComprehensiveIncomeLossDetails Other Comprehensive Loss (Details) false false R72.htm 0613 - Disclosure - Stock Based Compensation (Details) Sheet http://udr.com/role/StockBasedCompensationDetails Stock Based Compensation (Details) false false R73.htm 0614 - Disclosure - Commitments and Contingencies (Details) Sheet http://udr.com/role/CommitmentsAndContingenciesDetails Commitments and Contingencies (Details) false false R74.htm 0615 - Disclosure - Reportable Segments (Details) Sheet http://udr.com/role/ReportableSegmentDetails Reportable Segments (Details) false false R75.htm 0616 - Disclosure - Subsequent Event (Details) Sheet http://udr.com/role/SubsequentEventDetails Subsequent Event (Details) false false All Reports Book All Reports Element us-gaap_AmortizationOfDebtDiscountPremium had a mix of decimals attribute values: 0 -3. Element us-gaap_AmortizationOfDebtDiscountPremium had a mix of decimals attribute values: 0 -3. Element us-gaap_PaymentsToAcquireInterestInJointVenture had a mix of decimals attribute values: 0 -3. Element us-gaap_RepaymentsOfUnsecuredDebt had a mix of decimals attribute values: -3 -5. Element us-gaap_BusinessAcquisitionContingentConsiderationAtFairValue had a mix of decimals attribute values: -3 -6. Element us-gaap_BusinessAcquisitionContingentConsiderationAtFairValue had a mix of decimals attribute values: -3 -6. Element us-gaap_PaymentsToAcquireInterestInJointVenture had a mix of decimals attribute values: 0 -3. Element us-gaap_EquityMethodInvestmentOwnershipPercentage had a mix of decimals attribute values: 4 2. Element us-gaap_DebtInstrumentUnamortizedDiscount had a mix of decimals attribute values: 0 -3 -5 -6. Element us-gaap_ManagementFeesRevenue had a mix of decimals attribute values: 0 -5. Element us-gaap_LineOfCreditFacilityAmountOutstanding had a mix of decimals attribute values: -3 -6. Element us-gaap_LineOfCreditFacilityAmountOutstanding had a mix of decimals attribute values: -3 -6. Element us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity had a mix of decimals attribute values: -3 -8. Element us-gaap_DebtInstrumentUnamortizedDiscount had a mix of decimals attribute values: 0 -3 -5 -6. Element us-gaap_LineOfCreditFacilityAmountOutstanding had a mix of decimals attribute values: -3 -6. Element us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity had a mix of decimals attribute values: -3 -8. Element us-gaap_LineOfCreditFacilityAmountOutstanding had a mix of decimals attribute values: -3 -6. Element us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity had a mix of decimals attribute values: -3 -8. Element udr_PercentageOfDebtInstrumentPrice had a mix of decimals attribute values: 5 4. Element us-gaap_RepaymentsOfUnsecuredDebt had a mix of decimals attribute values: -3 -5. Element us-gaap_AmortizationOfDebtDiscountPremium had a mix of decimals attribute values: 0 -3. Element us-gaap_DebtInstrumentUnamortizedDiscount had a mix of decimals attribute values: 0 -3 -5 -6. Element us-gaap_BusinessAcquisitionContingentConsiderationAtFairValue had a mix of decimals attribute values: -3 -6. Element us-gaap_BusinessAcquisitionContingentConsiderationAtFairValue had a mix of decimals attribute values: -3 -6. Element us-gaap_LineOfCreditFacilityAmountOutstanding had a mix of decimals attribute values: -3 -6. 'Monetary' elements on report '0120 - Statement - Consolidated Statements of Operations (Unaudited)' had a mix of different decimal attribute values. 'Monetary' elements on report '0602 - Disclosure - Significant Accounting Policies (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '06051 - Disclosure - Joint Ventures (Details Textual)' had a mix of different decimal attribute values. 'Monetary' elements on report '06063 - Disclosure - Secured Debt (Details Textual)' had a mix of different decimal attribute values. 'Monetary' elements on report '06073 - Disclosure - Unsecured Debt (Details Textual)' had a mix of different decimal attribute values. 'Shares' elements on report '0608 - Disclosure - Earnings/(Loss) Per Share (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '06101 - Disclosure - Fair Value of Derivatives and Financial Instruments (Details Textual)' had a mix of different decimal attribute values. 'Monetary' elements on report '06113 - Disclosure - Derivatives and Hedging Activity (Details Textual)' had a mix of different decimal attribute values. 'Monetary' elements on report '0615 - Disclosure - Reportable Segments (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '0616 - Disclosure - Subsequent Event (Details)' had a mix of different decimal attribute values. Process Flow-Through: 0110 - Statement - Consolidated Balance Sheets Process Flow-Through: Removing column 'Sep. 30, 2010' Process Flow-Through: Removing column 'Dec. 31, 2009' Process Flow-Through: 0111 - Statement - Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 0112 - Statement - Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) Process Flow-Through: Removing column 'Sep. 30, 2010' Process Flow-Through: Removing column 'Dec. 31, 2009' Process Flow-Through: 0113 - Statement - Consolidated Balance Sheets (UNITED DOMINION REALTY, L.P) (Parenthetical) Process Flow-Through: 0120 - Statement - Consolidated Statements of Operations (Unaudited) Process Flow-Through: 0121 - Statement - Consolidated Statements of Operations (UNITED DOMINION REALTY, L.P) Process Flow-Through: 0131 - Statement - Consolidated Statements of Equity and Comprehensive Income/(Loss) (Unaudited) (Parenthetical) Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2011' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2010' Process Flow-Through: Removing column '9 Months Ended Sep. 30, 2010' Process Flow-Through: 0132 - Statement - Consolidated Statement of Capital and Comprehensive Income/(Loss) (UNITED DOMINION REALTY, L.P) (Unaudited) Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2011' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2010' Process Flow-Through: Removing column '9 Months Ended Sep. 30, 2011' Process Flow-Through: Removing column '9 Months Ended Sep. 30, 2010' Process Flow-Through: Removing column '9 Months Ended Sep. 30, 2011 Accumulated Other Comprehensive Income (Loss) [Member]' Process Flow-Through: 0140 - Statement - Consolidated Statements of Cash Flows (Unaudited) Process Flow-Through: 0141 - Statement - Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) Process Flow-Through: 0142 - Statement - Consolidated Statements of Cash Flows (UNITED DOMINION REALTY, L.P) (Unaudited) udr-20110930.xml udr-20110930.xsd udr-20110930_cal.xml udr-20110930_def.xml udr-20110930_lab.xml udr-20110930_pre.xml true true