v3.25.3
Cover Page
9 Months Ended
Sep. 30, 2025
shares
Cover [Abstract]  
Document Type 10-K
Document Annual Report true
Document Period End Date Sep. 30, 2025
Current Fiscal Year End Date --09-30
Document Transition Report false
Entity File Number 1-9317
Entity Registrant Name EQC LIQUIDATING TRUST
Entity Incorporation, State or Country Code MD
Entity Tax Identification Number 39-6868408
Entity Address, Address Line One Two North Riverside Plaza, Suite 2000
Entity Address, City or Town Chicago
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60606
City Area Code (312)
Local Phone Number 646-2800
Title of 12(b) Security None
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers Yes
Entity Current Reporting Status No
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Entity Shell Company false
Entity Common Stock, Shares Outstanding (in shares) 0
Entity Central Index Key 0000803649
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q3
No Trading Symbol Flag true
Financial Designation, Predecessor and Successor [Fixed List] Successor