XML 16 R1.htm IDEA: XBRL DOCUMENT v3.25.4
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Feb. 11, 2026
Jun. 30, 2025
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Securities Act File Number 1-10524    
Entity Registrant Name UDR, Inc.    
Entity Incorporation, State or Country Code MD    
Entity Tax Identification Number 54-0857512    
Entity Address, Address Line One 1745 Shea Center Drive, Suite 200    
Entity Address, City or Town Highlands Ranch    
Entity Address, State or Province CO    
Entity Address, Postal Zip Code 80129    
City Area Code 720    
Local Phone Number 283-6120    
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol UDR    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 5.2
Entity Common Stock, Shares Outstanding   328,571,965  
Auditor Name Ernst & Young LLP    
Auditor Location Denver Colorado    
Auditor Firm ID 42    
Entity Central Index Key 0000074208    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Documents Incorporated by Reference

The information required by Part III of this Report, to the extent not set forth herein, is incorporated by reference from UDR, Inc.’s definitive proxy statement for the 2026 Annual Meeting of Stockholders.