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REAL ESTATE OWNED (UNITED DOMINION REALTY, L.P.) - Acquisitions and Dispositions (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) state item community | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) state item community | Jun. 30, 2019 USD ($)
Real Estate Owned Disclosure |  |  |  |
Number of communities owned (in communities) | community | 148 |  | 148 |
Number of states in which there are owned and consolidated communities | state | 13 |  | 13 |
Development costs excluding direct costs and capitalized interest | $ 1.8 | $ 1.8 | $ 8.7 | $ 5.0
Number of apartments owned (in apartments homes) | item | 47,371 |  | 47,371 |
Interest capitalized during period | $ 1.7 | 1.2 | $ 3.0 | 2.3
United Dominion Realty L.P. |  |  |  |
Real Estate Owned Disclosure |  |  |  |
Number of communities owned (in communities) | community | 52 |  | 52 |
Number of states in which there are owned and consolidated communities | state | 9 |  | 9 |
Development costs excluding direct costs and capitalized interest | $ 0.2 | 0.3 | $ 0.6 | 0.3
Number of apartments owned (in apartments homes) | item | 16,434 |  | 16,434 |
United Dominion Realty L.P. | Maximum |  |  |  |
Real Estate Owned Disclosure |  |  |  |
Interest capitalized during period | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1

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- Definition Amount of interest capitalized, including amount of allowance for funds used during construction. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501662&loc=d3e56162-110433 + Details
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