XML 153 R128.htm IDEA: XBRL DOCUMENT v3.3.1.900

Debt (UNITED DOMINION REALTY, L.P.) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Communities	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Weighted Average Interest Rate	3.74%
Weighted Average Years to Maturity	5 years 10 days
Deferred Finance Costs, Net		$ 0
Fixed Rate Debt
Debt Instrument [Line Items]
Principal outstanding	$ 952,801	963,713
Weighted Average Interest Rate	4.93%
Weighted Average Years to Maturity	3 years 8 months 19 days
Number of Communities Encumbered	26
Fixed Rate Debt | Mortgages [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	4.57%
Weighted Average Years to Maturity	4 years 6 months 3 days
Number of Communities Encumbered	8
Fixed Rate Debt | Fannie Mae credit facilities
Debt Instrument [Line Items]
Weighted Average Years to Maturity	3 years 20 days
Number of Communities Encumbered	18
Variable Rate Debt
Debt Instrument [Line Items]
Principal outstanding	$ 424,144	390,608
Weighted Average Interest Rate	1.53%
Weighted Average Years to Maturity	4 years 6 months 10 days
Number of Communities Encumbered	11
Variable Rate Debt | Mortgages [Member]
Debt Instrument [Line Items]
Weighted Average Interest Rate	2.19%
Weighted Average Years to Maturity	1 year 26 days
Number of Communities Encumbered	1
Variable Rate Debt | Tax-exempt secured notes payable
Debt Instrument [Line Items]
Weighted Average Interest Rate	0.75%
Weighted Average Years to Maturity	7 years 2 months 8 days
Number of Communities Encumbered	2
Variable Rate Debt | Fannie Mae credit facilities
Debt Instrument [Line Items]
Weighted Average Years to Maturity	4 years 19 days
Number of Communities Encumbered	8
United Dominion Reality L.P.
Debt Instrument [Line Items]
Principal outstanding	$ 475,964	927,484
Weighted Average Interest Rate	3.76%
Weighted Average Years to Maturity	4 years 6 months 14 days
Number of Communities Encumbered | Communities	16
Deferred Finance Costs, Net	$ (2,199)	(4,500)
United Dominion Reality L.P. | Fixed Rate Debt
Debt Instrument [Line Items]
Principal outstanding	$ 279,333	708,534
Weighted Average Interest Rate	4.90%
Weighted Average Years to Maturity	3 years 3 months 9 days
Number of Communities Encumbered | Communities	9
United Dominion Reality L.P. | Fixed Rate Debt | Mortgages [Member]
Debt Instrument [Line Items]
Principal outstanding	$ 30,132	378,371
Weighted Average Interest Rate	3.43%
Weighted Average Years to Maturity	7 months 2 days
Number of Communities Encumbered | Communities	1
United Dominion Reality L.P. | Fixed Rate Debt | Fannie Mae credit facilities
Debt Instrument [Line Items]
Weighted Average Interest Rate	5.08%
Weighted Average Years to Maturity	3 years 7 months 27 days
Number of Communities Encumbered | Communities	8
United Dominion Reality L.P. | Variable Rate Debt
Debt Instrument [Line Items]
Principal outstanding	$ 196,631	218,950
Weighted Average Interest Rate	1.74%
Weighted Average Years to Maturity	6 years 3 months
Number of Communities Encumbered | Communities	7
United Dominion Reality L.P. | Variable Rate Debt | Tax-exempt secured notes payable
Debt Instrument [Line Items]
Principal outstanding	$ 27,000	27,000
Weighted Average Interest Rate	0.76%
Weighted Average Years to Maturity	16 years 2 months 19 days
Number of Communities Encumbered | Communities	1
United Dominion Reality L.P. | Variable Rate Debt | Fannie Mae credit facilities
Debt Instrument [Line Items]
Weighted Average Interest Rate	1.90%
Weighted Average Years to Maturity	4 years 8 months 1 day
Number of Communities Encumbered | Communities	6
Secured Debt [Member]
Debt Instrument [Line Items]
Deferred Finance Costs, Net		(7,208)
Secured Debt [Member] | Fixed Rate Debt
Debt Instrument [Line Items]
Deferred Finance Costs, Net	$ (4,278)	(5,583)
Secured Debt [Member] | Variable Rate Debt
Debt Instrument [Line Items]
Deferred Finance Costs, Net	(1,271)	(1,625)
Secured Debt [Member] | United Dominion Reality L.P. | Fixed Rate Debt
Debt Instrument [Line Items]
Deferred Finance Costs, Net	(1,627)	(3,665)
Secured Debt [Member] | United Dominion Reality L.P. | Variable Rate Debt
Debt Instrument [Line Items]
Deferred Finance Costs, Net	$ (572)	$ (810)

X

- Definition

Debt instrument weighted average years to maturity.

+ References

No definition available.

+ Details

Name:	udr_DebtInstrumentWeightedAverageYearsToMaturity
Namespace Prefix:	udr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of Communities Encumbered.

+ References

No definition available.

+ Details

Name:	udr_NumberOfCommunitiesEncumbered
Namespace Prefix:	udr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Secured debt including debt on real estate held for sale.

+ References

No definition available.

+ Details

Name:	udr_SecuredDebtIncludingDebtOnRealEstateHeldForSale
Namespace Prefix:	udr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 17
-Article 5

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentAxis=udr_FixedRateDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=udr_VariableRateDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=udr_TaxExemptNotesPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=udr_UnitedDominionRealityLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByLiabilityClassAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=udr_FixedRateDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=udr_VariableRateDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: