$UDR
UDR, Inc. Stock $udr

$udr Overview Financials Valuation SEC Filings Company Website

2013 Form 10-K Financial Statement

#000007420814000003 Filed on February 25, 2014

Income Statement

Concept	2013	2012 Q4	2012
Revenue	$758.9M	$176.1M	$716.6M
YoY Change	5.9%	10.75%	14.96%
Cost Of Revenue	$263.8M	$58.80M	$250.4M
YoY Change	5.35%	27.83%	11.84%
Gross Profit	$495.1M	$117.3M	$466.2M
YoY Change	6.2%	3.81%	16.7%
Gross Profit Margin	65.24%	66.61%	65.06%
Selling, General & Admin	$42.20M	$10.70M	$43.80M
YoY Change	-3.65%	-39.89%	-7.4%
% of Gross Profit	8.52%	9.12%	9.4%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$348.2M	$84.50M	$354.5M
YoY Change	-1.77%	-14.04%	-5.28%
% of Gross Profit	70.34%	72.04%	76.04%
Operating Expenses	$390.5M	$94.50M	$390.5M
YoY Change	0.0%	-13.38%	3.58%
Operating Profit	$116.9M	$22.80M	$67.26M
YoY Change	73.83%	484.62%	199.63%
Interest Expense	$126.1M	-$32.30M	$138.8M
YoY Change	-9.16%	-18.43%	-11.24%
% of Operating Profit	107.84%	-141.67%	206.35%
Other Income/Expense, Net
YoY Change
Pretax Income	-$4.959M	-$18.00M	-$76.59M
YoY Change	-93.53%	-49.58%	-42.21%
Income Tax	-$8.281M	-$1.600M	-$21.08M
% Of Pretax Income
Net Earnings	$44.81M	-$12.30M	$212.2M
YoY Change	-78.88%	-126.45%	959.67%
Net Earnings / Revenue	5.9%	-6.98%	29.61%
Basic Earnings Per Share	$0.16		$0.85
Diluted Earnings Per Share	$0.16	-$49.22K	$0.85
COMMON SHARES
Basic Shares Outstanding	250.0M shares	250.1M shares	238.9M shares
Diluted Shares Outstanding	250.0M shares		238.9M shares

Balance Sheet

Concept	2013	2012 Q4	2012
SHORT-TERM ASSETS
Cash & Short-Term Investments	$30.20M	$12.10M	$12.10M
YoY Change	149.59%	-3.2%	-3.2%
Cash & Equivalents	$30.20M	$12.12M	$12.10M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$30.20M	$12.10M	$12.10M
YoY Change	149.59%	-3.2%	-3.2%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.999B	$6.131B	$6.131B
YoY Change	-2.15%	3.73%	3.73%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$507.7M	$477.6M	$477.6M
YoY Change	6.3%	124.2%	124.23%
Other Assets	$49.70M	$48.60M	$48.60M
YoY Change	2.26%	-87.44%	-87.44%
Total Long-Term Assets	$6.778B	$6.847B	$6.847B
YoY Change	-1.02%	2.06%	2.06%
TOTAL ASSETS
Total Short-Term Assets	$30.20M	$12.10M	$12.10M
Total Long-Term Assets	$6.778B	$6.847B	$6.847B
Total Assets	$6.808B	$6.859B	$6.859B
YoY Change	-0.75%	2.05%	2.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$113.7M	$104.6M	$104.6M
YoY Change	8.7%	9.53%	9.53%
Accrued Expenses	$32.30M	$30.90M	$30.90M
YoY Change	4.53%	33.19%	33.19%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$249.0M	$232.5M	$232.5M
YoY Change	7.1%	6.36%	6.36%
LONG-TERM LIABILITIES
Long-Term Debt	$3.524B	$3.409B	$3.409B
YoY Change	3.36%	-12.99%	-12.99%
Other Long-Term Liabilities	$5.000M
YoY Change
Total Long-Term Liabilities	$3.529B	$3.409B	$3.409B
YoY Change	3.5%	-13.63%	-13.63%
TOTAL LIABILITIES
Total Short-Term Liabilities	$249.0M	$232.5M	$232.5M
Total Long-Term Liabilities	$3.529B	$3.409B	$3.409B
Total Liabilities	$3.996B	$3.642B	$3.866B
YoY Change	3.36%	-12.58%	-12.28%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock		$2.501M
YoY Change		13.84%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.812B	$2.993B	$2.993B
YoY Change
Total Liabilities & Shareholders Equity	$6.808B	$6.859B	$6.859B
YoY Change	-0.75%	2.05%	2.05%

Cashflow Statement

Concept	2013	2012 Q4	2012
OPERATING ACTIVITIES
Net Income	$44.81M	-$12.30M	$212.2M
YoY Change	-78.88%	-126.45%	959.67%
Depreciation, Depletion And Amortization	$348.2M	$84.50M	$354.5M
YoY Change	-1.77%	-14.04%	-5.28%
Cash From Operating Activities	$339.9M	$77.50M	$327.2M
YoY Change	3.89%	13.14%	30.14%
INVESTING ACTIVITIES
Capital Expenditures	-$441.9M	-$209.6M	-$508.0M
YoY Change	-13.01%	19.43%	-60.09%
Acquisitions
YoY Change
Other Investing Activities	$318.7M	$59.40M	$296.4M
YoY Change	7.52%	-71.39%	35.84%
Cash From Investing Activities	-$123.2M	-$150.1M	-$211.6M
YoY Change	-41.77%	-567.6%	-79.94%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$0.00		$756.1M
YoY Change	-100.0%		-14.05%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$198.6M	2.400M	-$116.0M
YoY Change	71.18%	-102.36%	-114.39%
NET CHANGE
Cash From Operating Activities	$339.9M	77.50M	$327.2M
Cash From Investing Activities	-$123.2M	-150.1M	-$211.6M
Cash From Financing Activities	-$198.6M	2.400M	-$116.0M
Net Change In Cash	$18.13M	-70.20M	-$388.0K
YoY Change	-4773.71%	6920.0%	-112.86%
FREE CASH FLOW
Cash From Operating Activities	$339.9M	$77.50M	$327.2M
Capital Expenditures	-$441.9M	-$209.6M	-$508.0M
Free Cash Flow	$781.8M	$287.1M	$835.2M
YoY Change	-6.39%	17.66%	-45.21%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	-1342070000	USD
CY2012Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	-1143781000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5125000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11257000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4098882000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4109765000	USD
CY2013	us-gaap	Advertising Cost Policy Expensed Advertising Cost AdvertisingCostPolicyExpensedAdvertisingCost	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Advertising Costs</font></div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">All advertising costs are expensed as incurred and reported on the Consolidated Statements of Operations within the line item </font><font style="font-family:inherit;font-size:10pt;font-style:italic;">General and</font><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:10pt;font-style:italic;">Administrative</font></div></div>
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CY2013	us-gaap	Advertising Expense AdvertisingExpense	5700000	USD
CY2012	us-gaap	Advertising Expense AdvertisingExpense	6200000	USD
CY2011	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	-1279000	USD
CY2013	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	-715000	USD
CY2012	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	-631000	USD
CY2013Q4	us-gaap	Assets Assets	6807722000	USD
CY2012Q4	us-gaap	Assets Assets	6859103000	USD
CY2013Q4	us-gaap	Assets Needed For Immediate Settlement Aggregate Fair Value AssetsNeededForImmediateSettlementAggregateFairValue	5500000	USD
CY2013Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	10152000	USD
CY2012Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	49619000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	3100000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	3500000	USD
CY2012	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2300000	USD
CY2011	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	4800000	USD
CY2013	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	100000	USD
CY2014Q1	us-gaap	Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh	4000000	USD
CY2011Q4	us-gaap	Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh	3000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	30249000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12115000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9486000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12503000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3017000	USD
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CY2011	us-gaap	Costs And Expenses CostsAndExpenses	600909000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	642006000	USD
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CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	250749665	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	2501000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	2507000	USD
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CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	350000000	shares
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CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	50944000	USD
CY2012	us-gaap	Cost Of Services Depreciation And Amortization CostOfServicesDepreciationAndAmortization	341926000	USD
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CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	214822000	USD
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CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	158000	USD
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CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8206000	USD
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CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	52664000	USD
CY2012	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	24551000	USD
CY2011	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	2009000	USD
CY2013	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	37220000	USD
CY2012	us-gaap	Conversion Of Stock Shares Converted1 ConversionOfStockSharesConverted1	20438	shares
CY2011	us-gaap	Conversion Of Stock Shares Converted1 ConversionOfStockSharesConverted1	12511	shares
CY2013	us-gaap	Conversion Of Stock Shares Converted1 ConversionOfStockSharesConverted1	76291	shares
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	463000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1030000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1961000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1015000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3424000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-184000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1463000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	552000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	846000	USD
CY2013Q4	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0431
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	16900000	USD
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CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	24175000	USD
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CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2009000	USD
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CY2013Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement DerivativeAssetNotSubjectToMasterNettingArrangement	0	USD
CY2012Q4	us-gaap	Derivative Assets DerivativeAssets	2000	USD
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CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	4965000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	11022000	USD
CY2012Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	11022000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	4965000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	9132000	USD
CY2013	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	6851000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	7649000	USD
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	11022000	USD
CY2013Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	4965000	USD
CY2012Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	0	USD
CY2013Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement DerivativeLiabilityNotSubjectToMasterNettingArrangement	0	USD
CY2013Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	5500000	USD
CY2012Q4	us-gaap	Development In Process DevelopmentInProcess	489795000	USD
CY2013Q4	us-gaap	Development In Process DevelopmentInProcess	466002000	USD
CY2012	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	139784000	USD
CY2013	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	144319000	USD
CY2011	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	127091000	USD
CY2011	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	138508000	USD
CY2012	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	260404000	USD
CY2013	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	41919000	USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	8850000	USD
CY2013	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-885000	USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	13218000	USD
CY2012	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	821000	USD
CY2011	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	2066000	USD
CY2013	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	-62000	USD
CY2013	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	3493000	USD
CY2011	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	22164000	USD
CY2012	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	15054000	USD
CY2011	us-gaap	Disposal Group Including Discontinued Operation Rental Income DisposalGroupIncludingDiscontinuedOperationRentalIncome	117269000	USD
CY2012	us-gaap	Disposal Group Including Discontinued Operation Rental Income DisposalGroupIncludingDiscontinuedOperationRentalIncome	39543000	USD
CY2013	us-gaap	Disposal Group Including Discontinued Operation Rental Income DisposalGroupIncludingDiscontinuedOperationRentalIncome	9152000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	235721000	USD
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	215654000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	165590000	USD
CY2012Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	57915000	USD
CY2013Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	61907000	USD
CY2013	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.16
CY2011	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.05
CY2012	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.85
CY2012Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.04
CY2012Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.05
CY2013Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.001
CY2012Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.37
CY2013Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.01
CY2013Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.02
CY2013Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.14
CY2012Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.62
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2011	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	11202000	USD
CY2013	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	130984000	USD
CY2012	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	50580000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	3207968000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	3198204000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	1487640000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	1421495000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	1720328000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	1776709000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-23021000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-3957000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-36075000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	89499000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	201969000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	233956000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	477631000	USD
CY2013Q4	us-gaap	Equity Method Investments EquityMethodInvestments	507655000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	9000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	11900000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	41919000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	125928000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	251554000	USD
CY2013Q4	us-gaap	General Partners Capital Account Units Outstanding GeneralPartnersCapitalAccountUnitsOutstanding	173959774	shares
CY2012Q4	us-gaap	General Partners Capital Account Units Outstanding GeneralPartnersCapitalAccountUnitsOutstanding	174886035	shares
CY2012	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2011	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2013	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	2355000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-44356000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-122099000	USD
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	2448000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	4937000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	48000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	2089000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-76587000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-4959000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-132516000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	2340000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-126869000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-46305000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-9287000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-23961000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-1162000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	4525000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	915000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-13972000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	2351000	USD
CY2013Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-3374000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.01
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.65
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.22
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	147454000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	43942000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	266608000	USD
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	180268000	USD
CY2013Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	829000	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-389000	USD
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	85713000	USD
CY2013Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	41376000	USD
CY2013Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	884000	USD
CY2013Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	853000	USD
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	1016000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	-5332000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	-1578000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	-10075000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	42364000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	256533000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	142122000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	1.07
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	0.17
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicAndDilutedShare	0.71
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-415000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-6352000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-8579000	USD
CY2013Q4	us-gaap	Income Tax Examination Likelihood Of Unfavorable Settlement IncomeTaxExaminationLikelihoodOfUnfavorableSettlement	not (greater than 50 percent probability)
CY2013Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	0	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7571000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-21076000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-8281000	USD
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-80000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-7470000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-43744000	USD
CY2012	us-gaap	Increase Decrease In Operating Assets IncreaseDecreaseInOperatingAssets	-12647000	USD
CY2011	us-gaap	Increase Decrease In Operating Assets IncreaseDecreaseInOperatingAssets	38282000	USD
CY2013	us-gaap	Increase Decrease In Operating Assets IncreaseDecreaseInOperatingAssets	15135000	USD
CY2012	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-21515000	USD
CY2011	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-2400000	USD
CY2013	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-16699000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6807722000	USD
CY2013Q4	us-gaap	Ineffectiveness On Interest Rate Fair Value Hedges Is Immaterial IneffectivenessOnInterestRateFairValueHedgesIsImmaterial	less than a $1,000
CY2012	us-gaap	Insurance Recoveries InsuranceRecoveries	-8495000	USD
CY2012	us-gaap	Interest Expense InterestExpense	138792000	USD
CY2011Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	184281254	shares
CY2012Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	184281254	shares
CY2013	us-gaap	Insurance Recoveries InsuranceRecoveries	12253000	USD
CY2011	us-gaap	Interest Expense InterestExpense	156366000	USD
CY2013	us-gaap	Interest Expense InterestExpense	126083000	USD
CY2013Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	183278698	shares
CY2009Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	179909409	shares
CY2012Q4	us-gaap	Line Of Credit LineOfCredit	3900000	USD
CY2011	us-gaap	Insurance Recoveries InsuranceRecoveries	0	USD
CY2011	us-gaap	Interest And Other Income InterestAndOtherIncome	7754000	USD
CY2012	us-gaap	Interest And Other Income InterestAndOtherIncome	3524000	USD
CY2013	us-gaap	Interest And Other Income InterestAndOtherIncome	4619000	USD
CY2012	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	26400000	USD
CY2011	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	13000000	USD
CY2013	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	29400000	USD
CY2012	us-gaap	Interest Income Related Party InterestIncomeRelatedParty	281000	USD
CY2013	us-gaap	Interest Income Related Party InterestIncomeRelatedParty	765000	USD
CY2011	us-gaap	Interest Income Related Party InterestIncomeRelatedParty	0	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	133133000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	155598000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	127877000	USD
CY2012Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	30937000	USD
CY2013Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	32279000	USD
CY2013Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	4400000	USD
CY2012Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	1884403000	USD
CY2013Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	1847127000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	3641853000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	3777621000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6859103000	USD
CY2013Q4	us-gaap	Line Of Credit LineOfCredit	2200000	USD
CY2013Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	838100000	USD
CY2013Q2	us-gaap	Line Of Credit Facility Commitment Fee Description LineOfCreditFacilityCommitmentFeeDescription	20
CY2013Q2	us-gaap	Line Of Credit Facility Interest Rate Description LineOfCreditFacilityInterestRateDescription	110
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	3409333000	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	3523703000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1241471000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	359609000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	875129000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	243398000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	282504000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	521592000	USD
CY2011	us-gaap	Loss From Catastrophes LossFromCatastrophes	0	USD
CY2012	us-gaap	Management Fees Revenue ManagementFeesRevenue	11800000	USD
CY2011	us-gaap	Management Fees Revenue ManagementFeesRevenue	9600000	USD
CY2013	us-gaap	Management Fees Revenue ManagementFeesRevenue	11200000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	916000	USD
CY2013Q4	us-gaap	Minority Interest MinorityInterest	856000	USD
CY2012	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	11392000	USD
CY2011	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-13978000	USD
CY2013	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-3656000	USD
CY2012	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	4871000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	450000	USD
CY2013Q4	us-gaap	Minority Interest In Joint Ventures MinorityInterestInJointVentures	-507655000	USD
CY2012Q4	us-gaap	Minority Interest In Joint Ventures MinorityInterestInJointVentures	-477631000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-198559000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	806289000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-115993000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-123209000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1054683000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-211582000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	251411000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	339902000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	327187000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	20023000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	44812000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	212177000	USD
CY2013	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	-60000	USD
CY2011	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	167000	USD
CY2012	us-gaap	Net Income Loss Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossAttributableToNonredeemableNoncontrollingInterest	140000	USD
CY2012	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	7986000	USD
CY2011	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	395000	USD
CY2013	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	1530000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	203376000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	10537000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	41088000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4261000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	80848000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	145721000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-9962000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2257000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-13231000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-1199000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	35769000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	34412000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	63595000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	278657000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	129437000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	268853000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	26880000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	0	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	2617000	USD
CY2012	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Nonredeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsNonredeemable	140000	USD
CY2011	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Nonredeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsNonredeemable	167000	USD
CY2013	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Nonredeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsNonredeemable	-60000	USD
CY2012	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	913000	USD
CY2011	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	880000	USD
CY2012Q4	us-gaap	Notes Receivable Net NotesReceivableNet	64006000	USD
CY2013Q4	us-gaap	Notes Receivable Net NotesReceivableNet	83033000	USD
CY2013	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	Segments
CY2012Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	5200000	USD
CY2013Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	4400000	USD
CY2011	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	9668000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	67260000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	22448000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	116920000	USD
CY2013	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	746484000	USD
CY2011	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	613689000	USD
CY2012	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	704701000	USD
CY2013Q4	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	190321000	USD
CY2013Q2	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	186285000	USD
CY2012Q2	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	175153000	USD
CY2012Q1	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	169950000	USD
CY2012Q3	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	179448000	USD
CY2013Q3	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	187917000	USD
CY2013Q1	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	181961000	USD
CY2012Q4	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	180150000	USD
CY2012	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	11911000	USD
CY2012Q4	us-gaap	Other Restricted Assets OtherRestrictedAssets	23561000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	125654000	USD
CY2013Q4	us-gaap	Other Assets OtherAssets	137882000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10837000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2725000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6382000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	3492000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-469000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-16477000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-4924000	USD
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6118000	USD
CY2013	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	7136000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	5718000	USD
CY2012	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	43792000	USD
CY2011	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	47257000	USD
CY2013	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	42238000	USD
CY2012	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	2700000	USD
CY2013	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	4100000	USD
CY2011	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	646000	USD
CY2012	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	26009000	USD
CY2011	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	22457000	USD
CY2013	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	24826000	USD
CY2013	us-gaap	Other Real Estate Revenue OtherRealEstateRevenue	12442000	USD
CY2013Q4	us-gaap	Other Restricted Assets OtherRestrictedAssets	22796000	USD
CY2011	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	55356000	USD
CY2012	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2013	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2013	us-gaap	Owned Property Management Costs OwnedPropertyManagementCosts	20528000	USD
CY2011	us-gaap	Owned Property Management Costs OwnedPropertyManagementCosts	16875000	USD
CY2012	us-gaap	Owned Property Management Costs OwnedPropertyManagementCosts	19378000	USD
CY2013Q4	us-gaap	Partners Capital Account Units PartnersCapitalAccountUnits	183278698	shares
CY2012	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3724000	USD
CY2011	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3724000	USD
CY2012Q4	us-gaap	Partners Capital Account Units PartnersCapitalAccountUnits	184281253	shares
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2012	us-gaap	Partners Capital Account Units Acquisitions PartnersCapitalAccountUnitsAcquisitions	0	shares
CY2013	us-gaap	Partners Capital Account Units Redeemed PartnersCapitalAccountUnitsRedeemed	0	shares
CY2013	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	61535000	USD
CY2013	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	0	USD
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2011	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	175000	USD
CY2011	us-gaap	Partners Capital Account Units Redeemed PartnersCapitalAccountUnitsRedeemed	0	shares
CY2012	us-gaap	Partners Capital Account Units Redeemed PartnersCapitalAccountUnitsRedeemed	0	shares
CY2013	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2012	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	2791000	USD
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2012	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	144877000	USD
CY2011	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	91476000	USD
CY2011	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	80397000	USD
CY2012	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	0	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	231822000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	207470000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	150446000	USD
CY2012	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	9033000	USD
CY2011	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	10947000	USD
CY2013	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	9348000	USD
CY2013	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3724000	USD
CY2011	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	9311000	USD
CY2012	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	6954000	USD
CY2012	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	4100000	USD
CY2011	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	104311000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	283369000	USD
CY2013	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	43291000	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7947000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7639000	USD
CY2011	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	13267000	USD
CY2011	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	989029000	USD
CY2013	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	0	USD
CY2012	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	108215000	USD
CY2013	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	372744000	USD
CY2011	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	98683000	USD
CY2012	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	246923000	USD
CY2013	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3724000	USD
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2013	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	2600000	USD
CY2012	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	4200000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	879754000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	756138000	USD
CY2013	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt		USD
CY2011	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	30728000	USD
CY2012	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	250000	USD
CY2012	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	396400000	USD
CY2013	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	299943000	USD
CY2011	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	296964000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-21959000	USD
CY2011	us-gaap	Proceeds From Repurchase Of Redeemable Preferred Stock ProceedsFromRepurchaseOfRedeemablePreferredStock	-3597000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8544000	USD
CY2012	us-gaap	Proceeds From Repurchase Of Redeemable Preferred Stock ProceedsFromRepurchaseOfRedeemablePreferredStock	-81609000	USD
CY2012	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-345000000	USD
CY2011	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	389250000	USD
CY2013	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-76000000	USD
CY2013	us-gaap	Proceeds From Repurchase Of Redeemable Preferred Stock ProceedsFromRepurchaseOfRedeemablePreferredStock	0	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-18731000	USD
CY2012	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	4871000	USD
CY2011	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	0	USD
CY2013	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	0	USD
CY2013Q2	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	141300000	USD
CY2013	us-gaap	Proceeds From Sale And Collection Of Notes Receivable ProceedsFromSaleAndCollectionOfNotesReceivable	19027000	USD
CY2012	us-gaap	Proceeds From Sale And Collection Of Notes Receivable ProceedsFromSaleAndCollectionOfNotesReceivable	63998000	USD
CY2011	us-gaap	Proceeds From Sale And Collection Of Notes Receivable ProceedsFromSaleAndCollectionOfNotesReceivable	7800000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	9799000	USD
CY2012	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
CY2013	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
CY2013	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	48500000	USD
CY2013Q2	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	436000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	609400000	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	81100000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	593400000	USD
CY2012	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	593167000	USD
CY2013	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	250043000	USD
CY2011	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	321803000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	20585000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	220303000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	46282000	USD
CY2013	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	129400000	USD
CY2012Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1924682000	USD
CY2013Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	2208794000	USD
CY2011Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1831727000	USD
CY2009Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1638326000	USD
CY2013	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	1374000	USD
CY2011	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	0	USD
CY2012	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	0	USD
CY2011	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2013	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	1132000	USD
CY2012	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	13945000	USD
CY2012	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	233207000	USD
CY2011	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	148524000	USD
CY2013	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	34794000	USD
CY2013Q2	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	140000000	USD
CY2013Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	7500000000	USD
CY2011Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8074471000	USD
CY2013	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	70687000	USD
CY2012Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8055828000	USD
CY2013Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	8207977000	USD
CY2013Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	217597000	USD
CY2012Q4	us-gaap	Redeemable Noncontrolling Interest Equity Common Carrying Amount RedeemableNoncontrollingInterestEquityCommonCarryingAmount	223418000	USD
CY2013Q4	us-gaap	Redeemable Noncontrolling Interest Equity Common Carrying Amount RedeemableNoncontrollingInterestEquityCommonCarryingAmount	217597000	USD
CY2011	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	587101000	USD
CY2012	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	559154000	USD
CY2009Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6881347000	USD
CY2013Q4	us-gaap	Real Estate Heldforsale RealEstateHeldforsale	10800000	USD
CY2011	us-gaap	Real Estate Improvements RealEstateImprovements	189711000	USD
CY2012	us-gaap	Real Estate Improvements RealEstateImprovements	422480000	USD
CY2013	us-gaap	Real Estate Improvements RealEstateImprovements	452057000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1884039000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2200815000	USD
CY2012Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	7475771000	USD
CY2013Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	7723844000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	5591732000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	5523029000	USD
CY2012	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	141648000	USD
CY2013	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	0	USD
CY2011	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	1590514000	USD
CY2013	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2011	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2012	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	13945000	USD
CY2012	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	86154000	USD
CY2013	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	93765000	USD
CY2011	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	75007000	USD
CY2011Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	236475000	USD
CY2012Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	223418000	USD
CY2012	us-gaap	Redeemable Preferred Stock Dividends RedeemablePreferredStockDividends	2286000	USD
CY2011	us-gaap	Redeemable Preferred Stock Dividends RedeemablePreferredStockDividends	5587000	USD
CY2011	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	332546000	USD
CY2012	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	491885000	USD
CY2013	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	46564000	USD
CY2012	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	100000000	USD
CY2011	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	264829000	USD
CY2013	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	122500000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2430127000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2430127000	shares
CY2013	us-gaap	Revenues Revenues	758926000	USD
CY2011	us-gaap	Revenues Revenues	623357000	USD
CY2012	us-gaap	Revenues Revenues	716612000	USD
CY2011	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	341925000	USD
CY2012	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	340800000	USD
CY2013	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	339326000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	12.63
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	756138000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	879754000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	12.63
CY2013Q4	us-gaap	Secured Debt SecuredDebt	1442077000	USD
CY2013Q4	us-gaap	Senior Notes SeniorNotes	250000000	USD
CY2012Q4	us-gaap	Secured Debt SecuredDebt	1430135000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	0
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2430127000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2430127000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	12.63
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	12.63
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P4Y4M24D
CY2013	us-gaap	Stock Issued During Period Shares Conversion Of Units StockIssuedDuringPeriodSharesConversionOfUnits	76291	shares
CY2008	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	9957233	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2013	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	1817000	USD
CY2012	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	529000	USD
CY2011	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	287000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	11002000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	9072000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-742000	USD
CY2011	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	3597000	USD
CY2012	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	81609000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	2992916000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	2811648000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2993832000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2812504000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2318784000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1610030000	USD
CY2013	udr	Condition For Community Considered To Have Stabilized Occupancy ConditionForCommunityConsideredToHaveStabilizedOccupancy	90% occupancy for at least three consecutive months
CY2013Q4	udr	Equity Method Investment Summarized Financial Information Amount Due To Related Party EquityMethodInvestmentSummarizedFinancialInformationAmountDueToRelatedParty	12187000	USD
CY2012Q4	udr	Accounts Payable Accrued Expenses And Other Liabilities AccountsPayableAccruedExpensesAndOtherLiabilities	104567000	USD
CY2012	udr	Contribution Of Purchase Deposit Made To Unconsolidated Joint Venture ContributionOfPurchaseDepositMadeToUnconsolidatedJointVenture	80397000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Amount Of Debt Due To Third Parties EquityMethodInvestmentSummarizedFinancialInformationAmountOfDebtDueToThirdParties	1545632000	USD
CY2013Q4	udr	Equity Method Investment Summarized Financial Information Amount Of Debt Due To Third Parties EquityMethodInvestmentSummarizedFinancialInformationAmountOfDebtDueToThirdParties	1722960000	USD
CY2013Q4	udr	Accounts Payable Accrued Expenses And Other Liabilities AccountsPayableAccruedExpensesAndOtherLiabilities	118682000	USD
CY2011	udr	Contribution Of Purchase Deposit Made To Unconsolidated Joint Venture ContributionOfPurchaseDepositMadeToUnconsolidatedJointVenture	0	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Cashandcashequivalents EquityMethodInvestmentSummarizedFinancialInformationCashandcashequivalents	41409000	USD
CY2013Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	13847000	USD
CY2012Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	14076000	USD
CY2012	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	USD
CY2011	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	192576000	USD
CY2013	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2012Q4	us-gaap	Unsecured Debt UnsecuredDebt	1979198000	USD
CY2013Q4	us-gaap	Unsecured Debt UnsecuredDebt	2081626000	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of these financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates.</font></div></div>
CY2012	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-44394000	USD
CY2013	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-100000	USD
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2013	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	249969000	shares
CY2012	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	238851000	shares
CY2011	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	201294000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	202573000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	239482000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	250684000	shares
CY2012Q4	udr	Accumulated Depreciation Of Assets Of Disposal Group Including Discontinued Operations AccumulatedDepreciationOfAssetsOfDisposalGroupIncludingDiscontinuedOperations	39390000	USD
CY2013Q4	udr	Accumulated Depreciation Of Assets Of Disposal Group Including Discontinued Operations AccumulatedDepreciationOfAssetsOfDisposalGroupIncludingDiscontinuedOperations	6568000	USD
CY2011Q4	udr	Additional Contribution Made By Company AdditionalContributionMadeByCompany	3000000	USD
CY2013	udr	Amount Of Private Or Public Capital That Must Be Raised For Note Receivable To Mature AmountOfPrivateOrPublicCapitalThatMustBeRaisedForNoteReceivableToMature	5000000	USD
CY2012	udr	Apartment Homes Sold ApartmentHomesSold	1418	Apartment_Homes
CY2013Q2	udr	Cash Paid In Equity Method Investment Exchange CashPaidInEquityMethodInvestmentExchange	15600000	USD
CY2011	udr	Cash Paid In Nonmonetary Asset Exchange CashPaidInNonmonetaryAssetExchange	28124000	USD
CY2012	udr	Cash Paid In Nonmonetary Asset Exchange CashPaidInNonmonetaryAssetExchange	0	USD
CY2013	udr	Cash Paid In Nonmonetary Asset Exchange CashPaidInNonmonetaryAssetExchange	0	USD
CY2013	udr	Change In Equity From Net Loss Income Attributable To Common Stockholders And Conversion Of Operating Partnership Units To Companys Common Stock ChangeInEquityFromNetLossIncomeAttributableToCommonStockholdersAndConversionOfOperatingPartnershipUnitsToCompanysCommonStock	42905000	USD
CY2011	udr	Change In Equity From Net Loss Income Attributable To Common Stockholders And Conversion Of Operating Partnership Units To Companys Common Stock ChangeInEquityFromNetLossIncomeAttributableToCommonStockholdersAndConversionOfOperatingPartnershipUnitsToCompanysCommonStock	10824000	USD
CY2012	udr	Change In Equity From Net Loss Income Attributable To Common Stockholders And Conversion Of Operating Partnership Units To Companys Common Stock ChangeInEquityFromNetLossIncomeAttributableToCommonStockholdersAndConversionOfOperatingPartnershipUnitsToCompanysCommonStock	203905000	USD
CY2013Q4	udr	Communities Held For Sale CommunitiesHeldForSale	1	Communities
CY2012	udr	Communities Sold CommunitiesSold	6	Communities
CY2013	udr	Contribution Of Purchase Deposit Made To Unconsolidated Joint Venture ContributionOfPurchaseDepositMadeToUnconsolidatedJointVenture	0	USD
CY2013Q4	udr	Cost Incurred To Date CostIncurredToDate	776685000	USD
CY2012	udr	Development Costs Excluding Direct Costs And Capitlized Interest DevelopmentCostsExcludingDirectCostsAndCapitlizedInterest	10000000	USD
CY2011	udr	Discontinued Operations Apartment Homes Sold DiscontinuedOperationsApartmentHomesSold	4488	Apartment_Homes
CY2013	udr	Debt Instrument Weighted Average Years To Maturity DebtInstrumentWeightedAverageYearsToMaturity	P4Y4M26D
CY2013Q4	udr	Debtassociatedwith Realestateacquired DebtassociatedwithRealestateacquired	63600000	USD
CY2012Q4	udr	Deferred Tax Asset Debt And Interest Deductions DeferredTaxAssetDebtAndInterestDeductions	0	USD
CY2011Q4	udr	Deferred Tax Asset Debt And Interest Deductions DeferredTaxAssetDebtAndInterestDeductions	0	USD
CY2013Q4	udr	Deferred Tax Asset Debt And Interest Deductions DeferredTaxAssetDebtAndInterestDeductions	10311000	USD
CY2012Q4	udr	Deferred Tax Assets Asset Capitalization Differences DeferredTaxAssetsAssetCapitalizationDifferences	6635000	USD
CY2013Q4	udr	Deferred Tax Assets Asset Capitalization Differences DeferredTaxAssetsAssetCapitalizationDifferences	0	USD
CY2011Q4	udr	Deferred Tax Assets Asset Capitalization Differences DeferredTaxAssetsAssetCapitalizationDifferences	5948000	USD
CY2011Q4	udr	Deferred Tax Assets Depreciation DeferredTaxAssetsDepreciation	10045000	USD
CY2012Q4	udr	Deferred Tax Assets Depreciation DeferredTaxAssetsDepreciation	12345000	USD
CY2013Q4	udr	Deferred Tax Assets Depreciation DeferredTaxAssetsDepreciation	19354000	USD
CY2012Q4	udr	Deferred Tax Assets Federal And State Tax Attributes DeferredTaxAssetsFederalAndStateTaxAttributes	1464000	USD
CY2011Q4	udr	Deferred Tax Assets Federal And State Tax Attributes DeferredTaxAssetsFederalAndStateTaxAttributes	24524000	USD
CY2013Q4	udr	Deferred Tax Assets Federal And State Tax Attributes DeferredTaxAssetsFederalAndStateTaxAttributes	13069000	USD
CY2013	udr	Development Costs Excluding Direct Costs And Capitlized Interest DevelopmentCostsExcludingDirectCostsAndCapitlizedInterest	11100000	USD
CY2011	udr	Development Costs Excluding Direct Costs And Capitlized Interest DevelopmentCostsExcludingDirectCostsAndCapitlizedInterest	10000000	USD
CY2012	udr	Discontinued Operations Apartment Homes Sold DiscontinuedOperationsApartmentHomesSold	6507	Apartment_Homes
CY2013	udr	Discontinued Operations Apartment Homes Sold DiscontinuedOperationsApartmentHomesSold	914	Apartment_Homes
CY2013	udr	Discontinued Operations Communities Sold DiscontinuedOperationsCommunitiesSold	2	Communities
CY2011	udr	Discontinued Operations Communities Sold DiscontinuedOperationsCommunitiesSold	18	Communities
CY2012	udr	Discontinued Operations Communities Sold DiscontinuedOperationsCommunitiesSold	21	Communities
CY2011	udr	Disposal Group Including Discontinued Operation Property Management Fee DisposalGroupIncludingDiscontinuedOperationPropertyManagementFee	3226000	USD
CY2012	udr	Disposal Group Including Discontinued Operation Property Management Fee DisposalGroupIncludingDiscontinuedOperationPropertyManagementFee	1087000	USD
CY2013	udr	Disposal Group Including Discontinued Operation Property Management Fee DisposalGroupIncludingDiscontinuedOperationPropertyManagementFee	252000	USD
CY2011	udr	Disposal Group Including Discontinued Operation Real Estate Depreciation DisposalGroupIncludingDiscontinuedOperationRealEstateDepreciation	45713000	USD
CY2013	udr	Disposal Group Including Discontinued Operation Real Estate Depreciation DisposalGroupIncludingDiscontinuedOperationRealEstateDepreciation	1958000	USD
CY2012	udr	Disposal Group Including Discontinued Operation Real Estate Depreciation DisposalGroupIncludingDiscontinuedOperationRealEstateDepreciation	8475000	USD
CY2012	udr	Disposal Group Including Discontinued Operation Rental Expenses DisposalGroupIncludingDiscontinuedOperationRentalExpenses	14106000	USD
CY2011	udr	Disposal Group Including Discontinued Operation Rental Expenses DisposalGroupIncludingDiscontinuedOperationRentalExpenses	44100000	USD
CY2013	udr	Disposal Group Including Discontinued Operation Rental Expenses DisposalGroupIncludingDiscontinuedOperationRentalExpenses	3511000	USD
CY2013Q4	udr	Equity Method Investment Cost Of Ownership Interest EquityMethodInvestmentCostOfOwnershipInterest	80200000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Accountspayableandaccruedliabilities EquityMethodInvestmentSummarizedFinancialInformationAccountspayableandaccruedliabilities	47190000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Third Party Debt Relatedto Real Estate Heldfor Sale EquityMethodInvestmentSummarizedFinancialInformationThirdPartyDebtRelatedtoRealEstateHeldforSale	120277000	USD
CY2013	udr	Distributions To Redeemable Noncontrolling Interests In Operating Partnership DistributionsToRedeemableNoncontrollingInterestsInOperatingPartnership	9440000	USD
CY2012	udr	Distributions To Redeemable Noncontrolling Interests In Operating Partnership DistributionsToRedeemableNoncontrollingInterestsInOperatingPartnership	9202000	USD
CY2013Q4	udr	Equity Method Investment Summarized Financial Information Accountspayableandaccruedliabilities EquityMethodInvestmentSummarizedFinancialInformationAccountspayableandaccruedliabilities	41562000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Amount Due To Related Party EquityMethodInvestmentSummarizedFinancialInformationAmountDueToRelatedParty	7229000	USD
CY2013	udr	Number Of Apartment Homes Acquired NumberOfApartmentHomesAcquired	0	Apartment_Homes
CY2013Q4	udr	Number Of Apartment Homes Owned And Consolidated By Company NumberOfApartmentHomesOwnedAndConsolidatedByCompany	41250	Apartment_Homes
CY2013Q4	udr	Equity Method Investment Summarized Financial Information Cashandcashequivalents EquityMethodInvestmentSummarizedFinancialInformationCashandcashequivalents	41792000	USD
CY2011	udr	Equity Method Investment Summarized Financial Information Depreciation Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAmortization	38049000	USD
CY2012	udr	Equity Method Investment Summarized Financial Information Depreciation Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAmortization	85754000	USD
CY2013	udr	Equity Method Investment Summarized Financial Information Depreciation Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAmortization	83776000	USD
CY2011	udr	Equity Method Investment Summarized Financial Information Incomelossfromdiscontinuedoperations EquityMethodInvestmentSummarizedFinancialInformationIncomelossfromdiscontinuedoperations	4942000	USD
CY2012	udr	Equity Method Investment Summarized Financial Information Incomelossfromdiscontinuedoperations EquityMethodInvestmentSummarizedFinancialInformationIncomelossfromdiscontinuedoperations	20965000	USD
CY2013	udr	Equity Method Investment Summarized Financial Information Incomelossfromdiscontinuedoperations EquityMethodInvestmentSummarizedFinancialInformationIncomelossfromdiscontinuedoperations	-21465000	USD
CY2011	udr	Equity Method Investment Summarized Financial Information Interestexpense EquityMethodInvestmentSummarizedFinancialInformationInterestexpense	-29985000	USD
CY2012	udr	Equity Method Investment Summarized Financial Information Interestexpense EquityMethodInvestmentSummarizedFinancialInformationInterestexpense	-65050000	USD
CY2013	udr	Equity Method Investment Summarized Financial Information Interestexpense EquityMethodInvestmentSummarizedFinancialInformationInterestexpense	-73555000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Otherassets EquityMethodInvestmentSummarizedFinancialInformationOtherassets	30878000	USD
CY2013Q4	udr	Equity Method Investment Summarized Financial Information Otherassets EquityMethodInvestmentSummarizedFinancialInformationOtherassets	32234000	USD
CY2011	udr	Equity Method Investment Summarized Financial Information Otherincomeexpense EquityMethodInvestmentSummarizedFinancialInformationOtherincomeexpense	-154000	USD
CY2012	udr	Equity Method Investment Summarized Financial Information Otherincomeexpense EquityMethodInvestmentSummarizedFinancialInformationOtherincomeexpense	-14000	USD
CY2013	udr	Equity Method Investment Summarized Financial Information Otherincomeexpense EquityMethodInvestmentSummarizedFinancialInformationOtherincomeexpense	4000	USD
CY2011	udr	Equity Method Investment Summarized Financial Information Property Operating Expense EquityMethodInvestmentSummarizedFinancialInformationPropertyOperatingExpense	49274000	USD
CY2012	udr	Equity Method Investment Summarized Financial Information Property Operating Expense EquityMethodInvestmentSummarizedFinancialInformationPropertyOperatingExpense	76073000	USD
CY2013	udr	Equity Method Investment Summarized Financial Information Property Operating Expense EquityMethodInvestmentSummarizedFinancialInformationPropertyOperatingExpense	91239000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Real Estate Heldfor Sale EquityMethodInvestmentSummarizedFinancialInformationRealEstateHeldforSale	243755000	USD
CY2012Q4	udr	Equity Method Investment Summarized Financial Information Real Estate Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateNet	2891926000	USD
CY2013Q4	udr	Equity Method Investment Summarized Financial Information Real Estate Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateNet	3124178000	USD
CY2011	udr	Equity Methodof Investment Summarized Financial Information Operatingincomeloss EquityMethodofInvestmentSummarizedFinancialInformationOperatingincomeloss	2176000	USD
CY2012	udr	Equity Methodof Investment Summarized Financial Information Operatingincomeloss EquityMethodofInvestmentSummarizedFinancialInformationOperatingincomeloss	40142000	USD
CY2013	udr	Equity Methodof Investment Summarized Financial Information Operatingincomeloss EquityMethodofInvestmentSummarizedFinancialInformationOperatingincomeloss	58941000	USD
CY2013Q2	udr	Equitymethodownershipinterestexchanged Equitymethodownershipinterestexchanged	0.10
CY2013Q4	udr	Expected Costs To Complete ExpectedCostsToComplete	477094000	USD
CY2011Q4	udr	Fair Value Of Underlying Property FairValueOfUnderlyingProperty	9800000	USD
CY2011Q4	udr	Fair Value Of Underlying Property Upon Completion Of Entitlement Process FairValueOfUnderlyingPropertyUponCompletionOfEntitlementProcess	12800000	USD
CY2011	udr	Federal Income Tax Expense Benefit FederalIncomeTaxExpenseBenefit	11715000	USD
CY2012	udr	Federal Income Tax Expense Benefit FederalIncomeTaxExpenseBenefit	21853000	USD
CY2013	udr	Federal Income Tax Expense Benefit FederalIncomeTaxExpenseBenefit	-8493000	USD
CY2013Q4	udr	General Partners Capital Account Units Owned Percentage GeneralPartnersCapitalAccountUnitsOwnedPercentage	0.949
CY2012Q4	udr	General Partners Capital Account Units Owned Percentage GeneralPartnersCapitalAccountUnitsOwnedPercentage	0.949
CY2013Q4	udr	Number Of Owned And Consolidated Community NumberOfOwnedAndConsolidatedCommunity	141	Communities
CY2013	udr	Joint Venture Managment And Other Fees JointVentureManagmentAndOtherFees	12442000	USD
CY2012	udr	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationIssuedValue	0	USD
CY2012Q4	udr	Noncontrolling Interest Ownership Percentage Purchased NoncontrollingInterestOwnershipPercentagePurchased	0.1
CY2013Q4	udr	Number Of States In Which There Are Owned And Consolidated Communities NumberOfStatesInWhichThereAreOwnedAndConsolidatedCommunities	10	States
CY2013Q4	udr	Numberofapartmentsofdevelopmentcommunity Numberofapartmentsofdevelopmentcommunity	391	Apartment_Homes
CY2012	udr	Joint Venture Managment And Other Fees JointVentureManagmentAndOtherFees	11911000	USD
CY2013Q4	udr	Number Of Apartment Homes Acquired NumberOfApartmentHomesAcquired	0	Apartment_Homes
CY2012	udr	Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2645000	USD
CY2013	udr	Hurricane Related Recovery Noncash Income HurricaneRelatedRecoveryNoncashIncome	-270000	USD
CY2012	udr	Hurricane Related Recovery Noncash Income HurricaneRelatedRecoveryNoncashIncome	8495000	USD
CY2013	udr	Impairmentof Long Lived Assetstobe Disposedofnetoftax ImpairmentofLongLivedAssetstobeDisposedofnetoftax	1470000	USD
CY2011	udr	Impairmentof Long Lived Assetstobe Disposedofnetoftax ImpairmentofLongLivedAssetstobeDisposedofnetoftax	0	USD
CY2012	udr	Impairmentof Long Lived Assetstobe Disposedofnetoftax ImpairmentofLongLivedAssetstobeDisposedofnetoftax	0	USD
CY2012	udr	Income Tax Expense Benefit Continuing Operations Change In Valuation Allowance IncomeTaxExpenseBenefitContinuingOperationsChangeInValuationAllowance	-21500000	USD
CY2013	udr	Income Tax Expense Benefit Continuing Operations Change In Valuation Allowance IncomeTaxExpenseBenefitContinuingOperationsChangeInValuationAllowance		USD
CY2013	udr	Income Tax Expense Benefit Of Reit Subsidiary Net Including Discontinued Operations IncomeTaxExpenseBenefitOfReitSubsidiaryNetIncludingDiscontinuedOperations	-7299000	USD
CY2011	udr	Income Tax Expense Benefit Of Reit Subsidiary Net Including Discontinued Operations IncomeTaxExpenseBenefitOfReitSubsidiaryNetIncludingDiscontinuedOperations	-5647000	USD
CY2012	udr	Income Tax Expense Benefit Of Reit Subsidiary Net Including Discontinued Operations IncomeTaxExpenseBenefitOfReitSubsidiaryNetIncludingDiscontinuedOperations	-30282000	USD
CY2012	udr	Income Tax Expensebenefits Discontinued Operations Changein Valuation Allowance IncomeTaxExpensebenefitsDiscontinuedOperationsChangeinValuationAllowance	-22864000	USD
CY2013Q4	udr	Initial Termof Bridge Loan InitialTermofBridgeLoan	P3M
CY2012	udr	Interestand Other Income Including Discontinued Operations InterestandOtherIncomeIncludingDiscontinuedOperations	2703000	USD
CY2011	udr	Interestand Other Income Including Discontinued Operations InterestandOtherIncomeIncludingDiscontinuedOperations	5688000	USD
CY2013	udr	Interestand Other Income Including Discontinued Operations InterestandOtherIncomeIncludingDiscontinuedOperations	4681000	USD
CY2012Q4	udr	Investment Buildingand Building Improvementsand Furniture Fixturesand Equipment InvestmentBuildingandBuildingImprovementsandFurnitureFixturesandEquipment	5591368000	USD
CY2013Q4	udr	Investment Buildingand Building Improvementsand Furniture Fixturesand Equipment InvestmentBuildingandBuildingImprovementsandFurnitureFixturesandEquipment	5876717000	USD
CY2011	udr	Joint Venture Managment And Other Fees JointVentureManagmentAndOtherFees	9668000	USD
CY2013Q4	udr	Joint Venture Number Of Apartment Homes In Operating Communities JointVentureNumberOfApartmentHomesInOperatingCommunities	9909	Apartment_Homes
CY2013	udr	Limited Partners Capital Account Units Redeemed LimitedPartnersCapitalAccountUnitsRedeemed	1002556	shares
CY2011	udr	Limited Partners Capital Account Units Redeemed For Cash LimitedPartnersCapitalAccountUnitsRedeemedForCash	4371845	shares
CY2012	udr	Maximum Number Of Days Within Which Criteria Is To Met MaximumNumberOfDaysWithinWhichCriteriaIsToMet	P730D
CY2011	udr	Minimum Percentage Of Carrying Value Of Real Estate Portfolio Held By Company MinimumPercentageOfCarryingValueOfRealEstatePortfolioHeldByCompany	0.10
CY2011	udr	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationIssuedValue	111034000	USD
CY2013	udr	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationIssuedValue	0	USD
CY2012Q4	udr	Real Estate Net RealEstateNet	6131146000	USD
CY2011	udr	Number Of Communities Acquired Apartment Homes Are Within NumberOfCommunitiesAcquiredApartmentHomesAreWithin	0	Communities
CY2013Q4	udr	Number Of Markets Operating Within NumberOfMarketsOperatingWithin	21	Markets
CY2013	udr	Number Of Communities Acquired Apartment Homes Are Within NumberOfCommunitiesAcquiredApartmentHomesAreWithin	0	Communities
CY2012	udr	Number Of Communities Acquired Apartment Homes Are Within NumberOfCommunitiesAcquiredApartmentHomesAreWithin	0	Communities
CY2013	udr	Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	6132000	USD
CY2011	udr	Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-10433000	USD
CY2012	udr	Other Cost And Expense Operating Including Discontinued Operations OtherCostAndExpenseOperatingIncludingDiscontinuedOperations	5718000	USD
CY2013	udr	Other Cost And Expense Operating Including Discontinued Operations OtherCostAndExpenseOperatingIncludingDiscontinuedOperations	7136000	USD
CY2011	udr	Other Cost And Expense Operating Including Discontinued Operations OtherCostAndExpenseOperatingIncludingDiscontinuedOperations	6118000	USD
CY2013	udr	Other General And Administrative Expense Including Discontinued Operations OtherGeneralAndAdministrativeExpenseIncludingDiscontinuedOperations	42238000	USD
CY2012	udr	Other General And Administrative Expense Including Discontinued Operations OtherGeneralAndAdministrativeExpenseIncludingDiscontinuedOperations	43792000	USD
CY2011	udr	Other General And Administrative Expense Including Discontinued Operations OtherGeneralAndAdministrativeExpenseIncludingDiscontinuedOperations	47257000	USD
CY2012	udr	Other Income Tax Expense Benefit OtherIncomeTaxExpenseBenefit	-1682000	USD
CY2013	udr	Other Income Tax Expense Benefit OtherIncomeTaxExpenseBenefit	246000	USD
CY2011	udr	Other Income Tax Expense Benefit OtherIncomeTaxExpenseBenefit	1227000	USD
CY2013	udr	Ownership Of Consolidated Joint Ventures OwnershipOfConsolidatedJointVentures	less than 100%
CY2013	udr	Percentage Distribution For Not Subject To Domestic Federal Income Tax PercentageDistributionForNotSubjectToDomesticFederalIncomeTax	0.90
CY2013Q2	udr	Percentageofinterestsold Percentageofinterestsold	0.50
CY2013Q4	udr	Percentageofrealestateretainedinsaleofrealestateowned Percentageofrealestateretainedinsaleofrealestateowned	50
CY2012	udr	Real Estate Impairment Amount Accumulated Depreciation RealEstateImpairmentAmountAccumulatedDepreciation	-693000	USD
CY2013	udr	Real Estate Impairment Amount Accumulated Depreciation RealEstateImpairmentAmountAccumulatedDepreciation	0	USD
CY2011	udr	Real Estate Impairment Amount Accumulated Depreciation RealEstateImpairmentAmountAccumulatedDepreciation	0	USD
CY2013	udr	Real Estate Impairment Amount Gross RealEstateImpairmentAmountGross	-2355000	USD
CY2011	udr	Real Estate Impairment Amount Gross RealEstateImpairmentAmountGross	0	USD
CY2012	udr	Real Estate Impairment Amount Gross RealEstateImpairmentAmountGross	-9672000	USD
CY2013Q4	udr	Real Estate Net RealEstateNet	5999183000	USD
CY2012Q4	udr	Real Estate Owned Gross RealEstateOwnedGross	8055828000	USD
CY2013Q4	udr	Real Estate Owned Gross RealEstateOwnedGross	8207977000	USD
CY2013Q4	udr	Real Estate Under Development Accumulated Depreciation RealEstateUnderDevelopmentAccumulatedDepreciation	1411000	USD
CY2012Q4	udr	Real Estate Under Development Accumulated Depreciation RealEstateUnderDevelopmentAccumulatedDepreciation	1253000	USD
CY2013Q4	udr	Real Estates Owned Accumulated Depreciation RealEstatesOwnedAccumulatedDepreciation	2208794000	USD
CY2012Q4	udr	Real Estates Owned Accumulated Depreciation RealEstatesOwnedAccumulatedDepreciation	1924682000	USD
CY2012	udr	Reallocationof Credit Facilities Debtfrom General Partner ReallocationofCreditFacilitiesDebtfromGeneralPartner	0	USD
CY2013	udr	Reallocationof Credit Facilities Debtfrom General Partner ReallocationofCreditFacilitiesDebtfromGeneralPartner	13682000	USD
CY2011	udr	Reallocationof Credit Facilities Debtfrom General Partner ReallocationofCreditFacilitiesDebtfromGeneralPartner	0	USD
CY2013	udr	Segment Reporting Reconciling Items Owned Property Management Costs SegmentReportingReconcilingItemsOwnedPropertyManagementCosts	20780000	USD
CY2011	udr	Related Party Transaction Management Fees RelatedPartyTransactionManagementFees	3700000	USD
CY2013	udr	Related Party Transaction Management Fees RelatedPartyTransactionManagementFees	12300000	USD
CY2012	udr	Related Party Transaction Management Fees RelatedPartyTransactionManagementFees	11900000	USD
CY2013Q4	udr	Secured Debt Encumbers Real Estate Owned Amount SecuredDebtEncumbersRealEstateOwnedAmount	2300000000	USD
CY2013Q4	udr	Secured Debt Encumbers Real Estate Owned Percent SecuredDebtEncumbersRealEstateOwnedPercent	0.282
CY2013Q4	udr	Secured Debt Unencumbered Real Estate Owned Amount SecuredDebtUnencumberedRealEstateOwnedAmount	5900000000	USD
CY2013Q4	udr	Secured Debt Unencumbered Real Estate Owned Percent SecuredDebtUnencumberedRealEstateOwnedPercent	0.718
CY2012Q4	udr	Security Deposits And Prepaid Rent SecurityDepositsAndPrepaidRent	25025000	USD
CY2013Q4	udr	Security Deposits And Prepaid Rent SecurityDepositsAndPrepaidRent	27203000	USD
CY2013	udr	Segment Reporting Information Net Operating Income SegmentReportingInformationNetOperatingIncome	514041000	USD
CY2012	udr	Segment Reporting Information Net Operating Income SegmentReportingInformationNetOperatingIncome	504200000	USD
CY2011	udr	Segment Reporting Information Net Operating Income SegmentReportingInformationNetOperatingIncome	484760000	USD
CY2012	udr	Segment Reporting Reconciling Items Cost Of Services Depreciation And Amortization SegmentReportingReconcilingItemsCostOfServicesDepreciationAndAmortization	350401000	USD
CY2013	udr	Segment Reporting Reconciling Items Cost Of Services Depreciation And Amortization SegmentReportingReconcilingItemsCostOfServicesDepreciationAndAmortization	341490000	USD
CY2011	udr	Segment Reporting Reconciling Items Cost Of Services Depreciation And Amortization SegmentReportingReconcilingItemsCostOfServicesDepreciationAndAmortization	370343000	USD
CY2011	udr	Segment Reporting Reconciling Items Gain Loss On Sale Of Property SegmentReportingReconcilingItemsGainLossOnSaleOfProperty	125290000	USD
CY2013	udr	Segment Reporting Reconciling Items Gain Loss On Sale Of Property SegmentReportingReconcilingItemsGainLossOnSaleOfProperty	40449000	USD
CY2012	udr	Segment Reporting Reconciling Items Gain Loss On Sale Of Property SegmentReportingReconcilingItemsGainLossOnSaleOfProperty	251554000	USD
CY2012	udr	Segment Reporting Reconciling Items Owned Property Management Costs SegmentReportingReconcilingItemsOwnedPropertyManagementCosts	20465000	USD
CY2011	udr	Segment Reporting Reconciling Items Owned Property Management Costs SegmentReportingReconcilingItemsOwnedPropertyManagementCosts	20101000	USD
CY2013Q4	udr	Sharebased Compensation Arrangementby Sharebased Payment Award Options Issued SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsIssued	3632305	shares
CY2013	udr	Shares Reserved For Issuance Under Stock Purchase Plan SharesReservedForIssuanceUnderStockPurchasePlan	10963730	shares
CY2011	udr	State And Local Income Tax Expense Benefit StateAndLocalIncomeTaxExpenseBenefit	2099000	USD
CY2012	udr	State And Local Income Tax Expense Benefit StateAndLocalIncomeTaxExpenseBenefit	2497000	USD
CY2013	udr	State And Local Income Tax Expense Benefit StateAndLocalIncomeTaxExpenseBenefit	46000	USD
CY2013	udr	Udr Incomelosscontinuingoperationsavailabletocommonshareholders UdrIncomelosscontinuingoperationsavailabletocommonshareholders	-1276000	USD
CY2011	udr	Udr Incomelosscontinuingoperationsavailabletocommonshareholders UdrIncomelosscontinuingoperationsavailabletocommonshareholders	-131585000	USD
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	udr	Udr Incomelosscontinuingoperationsavailabletocommonshareholders UdrIncomelosscontinuingoperationsavailabletocommonshareholders	-53157000	USD
CY2012	udr	Taxable Distributions Paid Per Common Share Long Term Capital Gain TaxableDistributionsPaidPerCommonShareLongTermCapitalGain	0.19
CY2013	udr	Taxable Distributions Paid Per Common Share Long Term Capital Gain TaxableDistributionsPaidPerCommonShareLongTermCapitalGain	0.11
CY2011	udr	Taxable Distributions Paid Per Common Share Long Term Capital Gain TaxableDistributionsPaidPerCommonShareLongTermCapitalGain	0.07
CY2011	udr	Taxable Distributions Paid Per Common Share Ordinary Income TaxableDistributionsPaidPerCommonShareOrdinaryIncome	0.49
CY2013	udr	Taxable Distributions Paid Per Common Share Ordinary Income TaxableDistributionsPaidPerCommonShareOrdinaryIncome	0.74
CY2012	udr	Taxable Distributions Paid Per Common Share Ordinary Income TaxableDistributionsPaidPerCommonShareOrdinaryIncome	0.17
CY2012	udr	Taxable Distributions Paid Per Common Share Unrecapture Section Gain TaxableDistributionsPaidPerCommonShareUnrecaptureSectionGain	0.52
CY2013	udr	Taxable Distributions Paid Per Common Share Unrecapture Section Gain TaxableDistributionsPaidPerCommonShareUnrecaptureSectionGain	0.07
CY2011	udr	Taxable Distributions Paid Per Common Share Unrecapture Section Gain TaxableDistributionsPaidPerCommonShareUnrecaptureSectionGain	0.21
CY2013	udr	Tenant Or Related Group Of Tenants Contributed Ten Percent Or More Of Company Revenue TenantOrRelatedGroupOfTenantsContributedTenPercentOrMoreOfCompanyRevenue	0
CY2012	udr	Tenant Or Related Group Of Tenants Contributed Ten Percent Or More Of Company Revenue TenantOrRelatedGroupOfTenantsContributedTenPercentOrMoreOfCompanyRevenue	0
CY2011	udr	Tenant Or Related Group Of Tenants Contributed Ten Percent Or More Of Company Revenue TenantOrRelatedGroupOfTenantsContributedTenPercentOrMoreOfCompanyRevenue	0
CY2013Q2	udr	Transactioncostsofsellinginterestinpartnerships Transactioncostsofsellinginterestinpartnerships	936000	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q4
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0000074208
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	251434518	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q4	dei	Entity Public Float EntityPublicFloat	3300000000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	UDR, Inc.
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No

Files In Submission

Name	View Source	Status
0000074208-14-000003-index-headers.html	Edgar Link	pending
0000074208-14-000003-index.html	Edgar Link	pending
0000074208-14-000003.txt	Edgar Link	pending
0000074208-14-000003-xbrl.zip	Edgar Link	pending
exhibit1022.htm	Edgar Link	pending
exhibit1024.htm	Edgar Link	pending
exhibit121-20131213.htm	Edgar Link	pending
exhibit122-20131231.htm	Edgar Link	pending
exhibit21-20131231.htm	Edgar Link	pending
exhibit231-20131231.htm	Edgar Link	pending
exhibit232-20131231.htm	Edgar Link	pending
exhibit311-20131231.htm	Edgar Link	pending
exhibit312-20131231.htm	Edgar Link	pending
exhibit313-20131231.htm	Edgar Link	pending
exhibit314-20131231.htm	Edgar Link	pending
exhibit321-20131231.htm	Edgar Link	pending
exhibit322-20131231.htm	Edgar Link	pending
exhibit323-20131231.htm	Edgar Link	pending
exhibit324-20131231.htm	Edgar Link	pending
exhibit416.htm	Edgar Link	pending
exhibit417.htm	Edgar Link	pending
exhibit418.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
udr-20131231.xml	Edgar Link	completed
udr-20131231.xsd	Edgar Link	pending
udr-20131231x10k.htm	Edgar Link	pending
udr-20131231_cal.xml	Edgar Link	unprocessable
udr-20131231_def.xml	Edgar Link	unprocessable
udr-20131231_lab.xml	Edgar Link	unprocessable
udr-20131231_pre.xml	Edgar Link	unprocessable
udr2013123110kchart.jpg	Edgar Link	pending
wellsfargo.jpg	Edgar Link	pending

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$UDR
UDR, Inc. Stock $udr

2013 Form 10-K Financial Statement

#000007420814000003 Filed on February 25, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UDR UDR, Inc. Stock $udr

2013 Form 10-K Financial Statement

#000007420814000003 Filed on February 25, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UDR
UDR, Inc. Stock $udr