v3.25.4
Document And Entity Information - shares
 12 Months Ended
Dec. 31, 2025
Mar. 13, 2026
Document Information Line Items    
Entity Central Index Key 0001966287  
Document Type 40-F  
Document Registration Statement false  
Document Annual Report true  
Current Fiscal Year End Date --12-31  
Document Period End Date Dec. 31, 2025  
Document Fiscal Year Focus 2025  
Entity File Number 001-41810  
Entity Registrant Name Greenfire Resources Ltd.  
Entity Incorporation, State or Country Code A0  
Entity Address, Address Line One Suite 800 – 350 7th Ave SW  
Entity Address, City or Town Calgary  
Entity Address, State or Province AB  
Entity Address, Postal Zip Code T2P 3N9  
City Area Code (403)  
Local Phone Number 264-9046  
Title of 12(b) Security Common Shares  
Trading Symbol GFR  
Security Exchange Name NYSE  
Annual Information Form true  
Audited Annual Financial Statements true  
Entity Common Stock, Shares Outstanding   125,407,252
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
ICFR Auditor Attestation Flag false  
Document Financial Statement Error Correction [Flag] false  
Auditor Name Deloitte LLP  
Auditor Location Calgary, Canada  
Auditor Firm ID 1208  
Amendment Flag false  
Document Fiscal Period Focus FY  
Business Contact    
Document Information Line Items    
Entity Address, Address Line One 850 Library Avenue  
Entity Address, City or Town Newark  
Entity Address, State or Province DE  
Entity Address, Postal Zip Code 19711  
City Area Code (302)  
Local Phone Number 738-6680  
Contact Personnel Name Puglisi & Associates  
Entity Address, Address Line Two Suite 204