v3.26.1
Cover
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Document Type 40-F
Document Registration Statement false
Document Annual Report true
Document Financial Statement Error Correction [Flag] false
Entity Interactive Data Current Yes
Annual Information Form true
Audited Annual Financial Statements true
ICFR Auditor Attestation Flag false
Amendment Flag false
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Entity Registrant Name Highlander Silver Corp.
Entity Central Index Key 0002013223
Entity File Number 001-43170
Entity Incorporation, State or Country Code Z4
Current Fiscal Year End Date --12-31
Entity Current Reporting Status No
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Address, Address Line One 2500 – 100 King Street West
Entity Address, City or Town Toronto
Entity Address, State or Province ON
Entity Address, Country CA
Entity Address, Postal Zip Code M5X 1A9
City Area Code (416)
Local Phone Number 366-5678
Title of 12(b) Security Common Shares, no par value
Trading Symbol HSLV
Security Exchange Name NYSEAMER
Entity Common Stock, Shares Outstanding 130,910,687
Business Contact  
Document Information [Line Items]  
Contact Personnel Name C T Corporation System
Entity Address, Address Line One 28 Liberty Street
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10005
City Area Code (212)
Local Phone Number 894-8940