CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Preferred Stock	Common Stock	Paid - in Capital	Distributions in Excess of Net Income	Accumulated Other Comprehensive Income/(Loss)	Noncontrolling Interest	Total
Beginning Balance at Dec. 31, 2022	$ 44,615	$ 3,290	$ 7,493,423	$ (3,451,587)	$ 8,344	$ 210	$ 4,098,295
Consolidated Statements of Changes in Equity
Net income/(loss) attributable to UDR, Inc.				30,964			30,964
Other comprehensive income/(loss)					(1,521)		(1,521)
Issuance/(forfeiture) of common and restricted shares, net		2	695				697
Issuance of common shares through public offering, net			(462)				(462)
Adjustment for conversion of noncontrolling interest of unitholders in the Operating Partnership and DownREIT Partnership			386				386
Common stock distributions declared				(138,318)			(138,318)
Preferred stock distributions declared-Series E				(1,183)			(1,183)
Adjustment to reflect redemption value of redeemable noncontrolling interests				(67,749)			(67,749)
Ending Balance at Mar. 31, 2023	44,615	3,292	7,494,042	(3,627,873)	6,823	210	3,921,109
Beginning Balance at Dec. 31, 2023	44,615	3,290	7,493,217	(3,554,892)	4,914	210	3,991,354
Consolidated Statements of Changes in Equity
Net income/(loss) attributable to UDR, Inc.				43,149			43,149
Other comprehensive income/(loss)					4,321		4,321
Issuance/(forfeiture) of common and restricted shares, net		1	85				86
Issuance of common shares through public offering, net			(418)				(418)
Adjustment for conversion of noncontrolling interest of unitholders in the Operating Partnership and DownREIT Partnership		2	7,286				7,288
Contribution of noncontrolling interests in consolidated real estate						125	125
Common stock distributions declared				(140,025)			(140,025)
Preferred stock distributions declared-Series E				(1,231)			(1,231)
Adjustment to reflect redemption value of redeemable noncontrolling interests				14,629			14,629
Ending Balance at Mar. 31, 2024	$ 44,615	$ 3,293	$ 7,500,170	$ (3,638,370)	$ 9,235	$ 335	$ 3,919,278