2.4.0.82118100 - Disclosure - Related Party Transactions (UNITED DOMINION REALTY, L.P.)truefalsefalse1false falsefalseD2013Q2YTD_dei_LegalEntityAxis_udr_UnitedDominionRealityLPMemberhttp://www.sec.gov/CIK0000074208duration2013-01-01T00:00:002013-06-30T00:00:001false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse1false truefalseD2013Q2YTD_dei_LegalEntityAxis_udr_UnitedDominionRealityLPMemberhttp://www.sec.gov/CIK0000074208duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseUnited Dominion Reality L.P. [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiudr_UnitedDominionRealityLPMemberdei_LegalEntityAxisexplicitMembernanafalse0United Dominion Reality L.P. [Member]2true 3dei_EntityInformationLineItemsdei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Entity Information [Line Items]3false 4us-gaap_RelatedPartyTransactionsDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;">RELATED PARTY TRANSACTIONS</div><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;">Payable/(Receivable) Due To/(From) the General Partner</div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;">The Operating Partnership participates in the General Partner’s central cash management program, wherein all the Operating Partnership’s cash receipts are remitted to the General Partner and all cash disbursements are funded by the General Partner. In addition, other miscellaneous costs such as administrative expenses are incurred by the General Partner on behalf of the Operating Partnership. As a result of these various transactions between the Operating Partnership and the General Partner, the Operating Partnership had a net payable balance of $65.4 million and a net receivable balance of $11.1 million at June 30, 2013 and December 31, 2012, respectively, which is reflected as an increase and a reduction of capital, respectively, on the Consolidated Balance Sheets.</div><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;">Allocation of General and Administrative Expenses</div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;">The General Partner provides various general and administrative and other overhead services for the Operating Partnership including legal assistance, acquisitions analysis, marketing and advertising, and allocates these expenses to the Operating Partnership first on the basis of direct usage when identifiable, with the remainder allocated based on its pro-rata portion of UDR’s total apartment homes. During the three and six months ended June 30, 2013 and 2012, the general and administrative expenses allocated to the Operating Partnership by UDR were $5.6 million and $10.9 million and $7.1 million and $14.6 million, respectively, and are included in “General and Administrative” expenses on the Consolidated Statements of Operations. In the opinion of management, this method of allocation reflects the level of services received by the Operating Partnership from the General Partner.</div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;">During the three and six months ended June 30, 2013 and 2012, the Operating Partnership incurred $3.0 million and $6.0 million and $2.8 million and $5.5 million, respectively, of related party management fees related to a management agreement entered into in 2011 with wholly owned subsidiaries of RE3. (See further discussion in paragraph below.) These related party management fees are initially recorded to “General and Administrative” expense, and a portion related to management fees charged by the Taxable REIT Subsidiary (“TRS”) of the General Partner is reclassified to “Property Management” expense on the Consolidated Statements of Operations. (See further discussion below.)</div><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;">Management Fee</div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:30px;font-size:10pt;">In 2011, the Operating Partnership entered into a management agreement with wholly owned subsidiaries of RE3. Under the management agreement, the Operating Partnership is charged a management fee equal to 2.75% of gross rental revenues, which is classified in "Property Management" on the Consolidated Statements of Operations. </div><div style="line-height:120%;padding-top:13px;text-align:left;font-size:10pt;">Guaranties by the General Partner</div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;">The Operating Partnership provided a “bottom dollar” guaranty to certain limited partners as part of their original contribution to the Operating Partnership. The guaranty protects the tax basis of the underlying contribution and is reflected on the OP unitholder’s Schedule K-1 tax form. The guaranty was made in the form of a note payable issued by the Operating Partnership to the General Partner at an annual interest rate of 0.932% at June 30, 2013 and December 31, 2012, respectively. Interest payments are made monthly and the note is due December 31, 2013. At June 30, 2013 and December 31, 2012, respectively, the note payable due to the General Partner was $83.2 million.</div><div style="line-height:120%;padding-top:13px;text-align:left;text-indent:32px;font-size:10pt;">In 2011, the Operating Partnership also provided a "bottom dollar" guaranty in conjunction with 1,802,239 OP Units issued in partial consideration to the seller for the acquisition of an operating community. The guaranty was made in the form of a note payable issued by the Operating Partnership to the General Partner at an annual interest rate of 5.337%. Interest payments are due monthly and the note matures on August 31, 2021. At June 30, 2013 and December 31, 2012, respectively, the note payable due to the General Partner was $5.5 million.</div></div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph b -Article 3A Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Article 4 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 1-4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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