Represents the amount the company committed to invest into the joint venture.

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The number of units in a real estate property under development owned as of the balance sheet date.

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The number of investments which receive a variable percentage of the value created from the project upon a capital or liquidating event.

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The number of joint venture agreements the company entered into during the period.

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Participating Loan, Interest Rate, Stated Percentage

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No definition available.

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Participating Loan Years to Maturity

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Amount of asset recognized for present right to economic benefit.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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JOINT VENTURES AND PARTNERSHIPS - Summary (Details)	1 Months Ended	3 Months Ended		6 Months Ended
JOINT VENTURES AND PARTNERSHIPS - Summary (Details)	Jul. 31, 2024 USD ($) community home agreement	Jun. 30, 2024 USD ($) community property home	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) community property home item	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Unconsolidated entities
Number of communities \| community		169		169
Assets		$ 11,117,805,000		$ 11,117,805,000		$ 11,373,242,000
Liabilities		6,373,304,000		6,373,304,000		6,420,801,000
Total assets		11,117,805,000		11,117,805,000		11,373,242,000
Total liabilities		6,373,304,000		6,373,304,000		6,420,801,000
Investment in unconsolidated entities		950,062,000		950,062,000		944,071,000
Income/(loss) from investments		$ 4,046,000	$ 9,697,000	$ 13,131,000	$ 19,404,000
Sold joint ventures and other investments			3,882,000		5,369,000
UDR/MetLife
Unconsolidated entities
Number of communities \| property		13		13
Number of apartment homes \| home		2,837		2,837
Investment in unconsolidated entities		$ 215,286,000		$ 215,286,000		$ 225,195,000
UDR's Ownership Interest		50.20%		50.20%		50.20%
Income/(loss) from investments		$ (1,408,000)	(1,125,000)	$ (3,254,000)	(2,475,000)
UDR/LaSalle
Unconsolidated entities
Number of communities \| property		5		5
Number of apartment homes \| home		1,590		1,590
Investment in unconsolidated entities		$ 275,885,000		$ 275,885,000		$ 286,723,000
UDR's Ownership Interest		51.00%		51.00%		51.00%
Income/(loss) from investments		$ (2,793,000)	(42,000)	$ (5,671,000)	(42,000)
Preferred Equity Investments
Unconsolidated entities
Number of communities \| community		23		23
Number of apartment homes		5,234		5,234
Number of apartment homes under development \| home		384		384
Weighted Average Rate		9.70%		9.70%
Investment in unconsolidated entities		$ 407,911,000		$ 407,911,000		$ 387,771,000
Income/(loss) from investments		8,436,000	7,798,000	$ 16,599,000	16,433,000
Years to Maturity				2 years 10 months 24 days
UDR Commitment		$ 329,209,000		$ 329,209,000
Number of investments which receive a variable percentage of the value created from the project upon a capital or liquidating event \| item				4
Joint venture one
Unconsolidated entities
Number of communities \| community	4
Number of apartment homes \| home	818
Weighted Average Rate	10.75%
Investment in unconsolidated entities	$ 35,000,000.0
Number of joint ventures agreements entered into \| agreement	3
Unconsolidated Joint Ventures
Unconsolidated entities
Number of communities \| property		18		18
Number of apartment homes \| home		4,427		4,427
Investment in unconsolidated entities		$ 491,171,000		$ 491,171,000		511,918,000
Income/(loss) from investments		$ (4,201,000)	(1,167,000)	$ (8,925,000)	(2,517,000)
Variable Interest Entity, Primary Beneficiary
Unconsolidated entities
Number of apartment homes \| home		173		173
Operating Community \| Preferred Equity Investments
Unconsolidated entities
Number of communities \| community		22		22
Number of apartment homes		5,234		5,234
Weighted Average Rate		9.50%		9.50%
Investment in unconsolidated entities		$ 385,968,000		$ 385,968,000		367,295,000
Income/(loss) from investments		7,690,000	7,147,000	$ 15,132,000	15,160,000
Years to Maturity				2 years 10 months 24 days
UDR Commitment		$ 313,165,000		$ 313,165,000
Operating Community \| Preferred Equity Investment One
Unconsolidated entities
Proceeds from Sale of Real Estate	$ 17,200,000
Weighted Average Rate	11.00%
Investment in unconsolidated entities	$ 50,000,000.0
Development Community \| Preferred Equity Investments
Unconsolidated entities
Number of communities \| community		1		1
Number of apartment homes		384		384
Weighted Average Rate		14.00%		14.00%
Investment in unconsolidated entities		$ 21,943,000		$ 21,943,000		20,476,000
Income/(loss) from investments		746,000	651,000	$ 1,467,000	1,273,000
Years to Maturity				2 years
UDR Commitment		16,044,000		$ 16,044,000
Development Community \| Real estate technology and sustainability investments
Unconsolidated entities
Investment in unconsolidated entities		50,980,000		50,980,000		44,382,000
Income/(loss) from investments		(189,000)	(816,000)	5,457,000	119,000
UDR Commitment		86,000,000		86,000,000
Development Community \| Preferred Equity Investments and Real Estate Technology Investments
Unconsolidated entities
Investment in unconsolidated entities		458,891,000		458,891,000		$ 432,153,000
Income/(loss) from investments		$ 8,247,000	$ 6,982,000	$ 22,056,000	$ 16,552,000