Document and Entity Information Entities [Table] Entity Information [Line Items] Entity information Document Type Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag CONSOLIDATED BALANCE SHEETS Statement [Table] Class of Stock [Axis] Class of Stock [Domain] Series E Preferred Stock [Member] 8.00% Series E Cumulative Convertible Preferred Stock Series F Preferred Stock [Member] Series F Statement [Line Items] Statement Assets [Abstract] ASSETS Real Estate Investment Property, Net [Abstract] Real estate owned: Real Estate Investment Property, at Cost Real estate held for investment Real Estate Investment Property, Accumulated Depreciation Less: accumulated depreciation Real Estate held for Investment Net excluding real estate under development or held for disposition Real Estate Held for Investment Net Excluding Real Estate Under Development or Held for Disposition Real estate held for investment, net Development in Process Real estate under development (net of accumulated depreciation of $0 and $0, respectively) Real estate under development Real Estate Investment Property, Net Total real estate, net Total real estate owned, net of accumulated depreciation Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents Restricted Cash and Cash Equivalents Restricted cash Financing Receivable, after Allowance for Credit Loss Notes receivable, net Total notes receivable, net Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure Investment in and advances to unconsolidated joint ventures, net Investments, at fair value Operating Lease, Right-of-Use Asset Operating lease right-of-use assets Other Assets Other assets Assets Total consolidated assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND EQUITY Liabilities [Abstract] Liabilities: Secured Debt Secured debt, net Unsecured Debt Unsecured debt, net Operating Lease, Liability Total operating lease liabilities (discounted) Operating lease liabilities Accrual for Taxes Other than Income Taxes Real estate taxes payable Interest Payable Accrued interest payable Advance Rent Security deposits and prepaid rent Dividends Payable Dividends declared, but not yet paid Distributions payable Accounts Payable and Accrued Liabilities Accounts payable, accrued expenses, and other liabilities Accounts payable and accrued liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 13) Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity: Preferred Stock, Value, Issued Preferred stock, no par value; 50,000,000 shares authorized at March 31, 2026 and December 31, 2025: Common Stock, Value, Issued Common stock, $0.01 par value; 450,000,000 shares authorized at March 31, 2026 and December 31, 2025: 325,894,030 and 328,273,044 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively Additional Paid in Capital Additional paid-in capital Accumulated Distributions in Excess of Net Income Distributions in excess of net income Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income/(loss), net Equity, Attributable to Parent Total stockholders' equity Equity, Attributable to Noncontrolling Interest Noncontrolling interests Equity, Including Portion Attributable to Noncontrolling Interest Ending Balance Beginning Balance Total equity Total equity Liabilities and Equity Total liabilities and equity Real estate under development, accumulated depreciation. Real Estate Under Development Accumulated Depreciation Real estate under development accumulated depreciation Preferred Stock, No Par Value Preferred stock, no par value Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Dividend Rate, Percentage Preferred stock, dividend rate percentage Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Number of shares authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding CONSOLIDATED STATEMENTS OF OPERATIONS Revenues [Abstract] REVENUES: Operating Lease, Lease Income Rental income Revenue from Contract with Customer, Excluding Assessed Tax Joint venture management and other fees Revenue, Product and Service [Extensible Enumeration] Type of revenue Revenues Total revenues Total revenues Costs and Expenses [Abstract] OPERATING EXPENSES: Direct Costs of Leased and Rented Property or Equipment Property operating and maintenance Property operating expenses Real Estate Taxes and Insurance Real estate taxes and insurance The operating costs related to management of owned property. Property Management Costs, Operating Property management Other Cost and Expense, Operating Other operating expenses Depreciation, Nonproduction Real estate depreciation and amortization General and Administrative Expense General and administrative Casualty-Related (Recoveries)/Charges, net Casualty Related Recoveries Charges net Casualty-related (charges)/recoveries, net Casualty-related charges/(recoveries), net Other Depreciation and Amortization Other depreciation and amortization Other depreciation and amortization Costs and Expenses Total operating expenses Gains (Losses) on Sales of Investment Real Estate (Gain)/loss on sale of real estate owned Gain/(loss) on sale of real estate owned Gain/(loss) on sale of real estate owned Operating Income (Loss) Operating income/(loss) Operating income Income (Loss) from Equity Method Investments (Income)/loss from unconsolidated entities Income/(loss) from unconsolidated entities Interest Expense, Debt Interest expense Total amount of Interest expense presented on the Consolidated Statements of Operations Other Nonoperating Income (Expense) Interest income and other income/(expense), net Other income/(loss) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income/(loss) before income taxes Income Tax Expense (Benefit) Tax (provision)/benefit, net Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income/(loss) Net income/(loss) Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Net (income)/loss attributable to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest Net (income)/loss attributable to noncontrolling interests Net income/(loss) attributable to UDR, Inc. Net income/(loss) attributable to UDR, Inc. Dividends, Preferred Stock Distributions to preferred stockholders - Series E (Convertible) Net Income (Loss) Available to Common Stockholders, Basic Net income/(loss) attributable to common stockholders Earnings Per Share, Basic Income/(loss) per weighted average common share - basic Earnings Per Share, Diluted Income/(loss) per weighted average common share - diluted Weighted Average Number of Shares Outstanding, Basic Weighted average number of common shares outstanding - basic Denominator for basic income/(loss) per share Weighted Average Number of Shares Outstanding, Diluted Weighted average number of common shares outstanding - diluted Denominator for diluted income/(loss) per share CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income/(loss), including portion attributable to noncontrolling interests: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Unrealized holding gain/(loss) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax (Gain)/loss reclassified into earnings from other comprehensive income/(loss) Gain/(Loss) Reclassified from Accumulated OCI in Interest expense Other Comprehensive Income (Loss), Net of Tax Other comprehensive income/(loss), including portion attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income/(loss) Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive (income)/loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income/(loss) attributable to UDR, Inc. CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Equity Components [Axis] Equity Component [Domain] Preferred Stock [Member] Preferred Stock Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Paid-in Capital Accumulated Distributions in Excess of Net Income [Member] Distributions in Excess of Net Income AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income/(Loss), net Noncontrolling Interest [Member] Noncontrolling Interests Increase (Decrease) in Stockholders' Equity [Roll Forward] Consolidated Statements of Changes in Equity Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Other comprehensive income/(loss) Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Issuance/(forfeiture) of common and restricted shares, net Stock Issued During Period, Value, New Issues Issuance of common shares through public offering, net Stock Issued During Period, Value, Conversion of Units Adjustment for conversion of noncontrolling interest of unitholders in the Operating Partnership and DownREIT Partnership Dividends, Common Stock, Cash Common stock distributions declared Stock Repurchased During Period, Value Repurchase of common shares Dividends, Preferred Stock, Cash Preferred stock distributions declared-Series E Noncontrolling Interest, Change in Redemption Value Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership Adjustment to reflect redemption value of redeemable noncontrolling interests Common Stock, Dividends, Per Share, Declared Common stock distributions declared per share Preferred Stock, Dividends Per Share, Declared Preferred stock distributions declared CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Operating Activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities: Depreciation, Depletion and Amortization Depreciation and amortization Return on Investment in Equity Method investments Return on Investment in Equity Method Investments Return on investment in unconsolidated joint ventures and partnerships Share-Based Payment Arrangement, Noncash Expense Amortization of share-based compensation Other Operating Activities, Cash Flow Statement Other Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Operating Assets (Increase)/decrease in operating assets Increase (Decrease) in Operating Liabilities Increase/(decrease) in operating liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by/(used in) operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing Activities Proceeds from Sale, Real Estate, Held-for-Investment Proceeds from sales of real estate investments, net Payments to Develop Real Estate Assets Development of real estate assets Payments for Capital Improvements Capital expenditures and other major improvements - real estate assets Payments to Acquire Furniture and Fixtures Capital expenditures - non-real estate assets The net cash outflow or inflow associated with the acquisition of or advances or deconsolidation of a previously consolidated subsidiary or sale of an entity that is related to it but not strictly controlled. Payments For (Proceeds From) Interest In Subsidiaries And Affiliates Investment in unconsolidated joint ventures and partnerships Proceeds from Equity Method Investment, Distribution, Return of Capital Distributions received from unconsolidated joint ventures and partnerships Payments for (Proceeds from) Loans Receivable Repayment/(issuance) of notes receivable, net Net Cash Provided by (Used in) Investing Activities Net cash provided by/(used in) investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing Activities Repayments of Secured Debt Payments on secured debt Proceeds from (Repayments of) Commercial Paper Net proceeds/(repayment) of commercial paper Proceeds from (Repayments of) Lines of Credit Net proceeds/(repayment) of revolving bank debt Payments for Repurchase of Common Stock Repurchase of common shares Repurchase of common shares Payments of Ordinary Dividends, Noncontrolling Interest Distributions paid to redeemable noncontrolling interests Payments of Ordinary Dividends, Preferred Stock and Preference Stock Distributions paid to preferred stockholders Payments of Ordinary Dividends, Common Stock Distributions paid to common stockholders Proceeds from (Payments for) Other Financing Activities Other Net Cash Provided by (Used in) Financing Activities Net cash provided by/(used in) financing activities Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net increase/(decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash, cash equivalents, and restricted cash, end of period Cash, cash equivalents, and restricted cash, beginning of year Total cash, cash equivalents, and restricted cash as shown above Supplemental Cash Flow Information [Abstract] Supplemental Information: Interest Paid, Excluding Capitalized Interest, Operating Activities Interest paid during the period, net of amounts capitalized Proceeds from Lease Payment, Operating Activity Operating cash flows from operating leases Income Taxes Paid, Net Cash paid/(refunds received) for income taxes Other Noncash Investing and Financing Items [Abstract] Non-cash transactions: Amount of cash proceeds generated from the sale of real estate investments that are held by a qualified intermediary. Real Estate Sale Proceeds Held By Qualified Intermediary Net proceeds from sale of real estate investment held by qualified intermediary Capital Expenditures Incurred but Not yet Paid Development costs and capital expenditures incurred, but not yet paid Conversion of Stock, Amount Converted Conversion of Operating Partnership and DownREIT Partnership noncontrolling interests to common stock (91,256 shares and 51,115 shares, respectively) Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract] The following reconciles cash, cash equivalents, and restricted cash to amounts as shown above: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash transactions: Conversion of Stock, Shares Converted Conversion of OP Units into common shares (in shares) BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] BASIS OF PRESENTATION SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] SIGNIFICANT ACCOUNTING POLICIES REAL ESTATE OWNED Real Estate Disclosure [Text Block] REAL ESTATE OWNED