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DERIVATIVES AND HEDGING ACTIVITY (UNITED DOMINION REALTY, L.P.) (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 USD ($) instrument | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Derivatives |  |  |
Estimated additional accumulated other comprehensive Income/(Loss) transferred to interest expense | $ 4,600 |  |
Interest rate caps | Not Designated as Hedging Instrument |  |  |
Outstanding interest rate derivatives not designated as hedging instrument |  |  |
Number instruments | instrument | 1 |  |
Notional | $ 19,880 |  |
United Dominion Realty L.P. |  |  |
Derivatives |  |  |
Derivatives | 0 |  | $ 0
United Dominion Realty L.P. | Interest rate contracts |  |  |
Derivatives |  |  |
Gain/(Loss) recognized in Interest Income and Other Income/(Expense), net | $ 0 | $ 0 |
United Dominion Realty L.P. | Interest rate caps | Not Designated as Hedging Instrument |  |  |
Outstanding interest rate derivatives not designated as hedging instrument |  |  |
Number instruments | instrument | 1 |  |
Notional | $ 19,880 |  |
Other income/(expense) | Interest rate contracts |  |  |
Derivatives |  |  |
Gain/(Loss) recognized in Interest Income and Other Income/(Expense), net | 0 | 0 |
Other income/(expense) | United Dominion Realty L.P. | Interest rate contracts |  |  |
Derivatives |  |  |
Gain/(Loss) recognized in Interest Income and Other Income/(Expense), net | $ 0 | $ 0 |

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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