v3.26.1
Cover - USD ($)
12 Months Ended
Dec. 31, 2025
May 28, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description This Amendment No. 1 on Form 10-K/A (“Amendment No. 1”) amends the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, originally filed with the SEC on April 28, 2026. Amendment No. 1 is being filed to correct the balances related to convertible notes payable, accrued interest, change in fair value of derivative liabilities, loss on issuance of debt, debt discount, amortization of debt discount, and stockholders’ equity, as well as the related impact on the consolidated statement of operations. Other than the revisions reflected in this Amendment No. 1, no changes have been made to the previously issued financial statements.    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --12-31    
Entity File Number 000-56477    
Entity Registrant Name HALLMARK VENTURE GROUP, INC.    
Entity Central Index Key 0001331421    
Entity Tax Identification Number 34-2001531    
Entity Incorporation, State or Country Code FL    
Entity Address, Address Line One 1800 N Town Center Drive    
Entity Address, Address Line Two STE 100    
Entity Address, City or Town Las Vegas    
Entity Address, State or Province NV    
Entity Address, Postal Zip Code 89144    
City Area Code 877    
Local Phone Number 646-4833    
Title of 12(g) Security Common Stock, $0.001 par value    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company true    
Entity Public Float     $ 1,691,940.48
Entity Common Stock, Shares Outstanding   66,177,020  
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Opinion [Text Block] We have audited the accompanying consolidated balance sheets of Hallmark Venture Group Inc. and its subsidiary (“the Company”, “HLLK”) as of December 31, 2025, and 2024, and the related consolidated statements of operations, changes in shareholders’ equity (deficit), and cash flows for each of the years in the two-year period ended December 31, 2025 and the related notes and schedules (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025, and 2024, and the results of its operations and its cash flows for each of the two-year period ended December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.    
Auditor Name INTEGRITAT CPA    
Auditor Firm ID 6624    
Auditor Location Boca Raton, Florida