Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2025	Aug. 14, 2025
Cover [Abstract]
Entity Registrant Name	SUSGLOBAL ENERGY CORP.
Entity Central Index Key	0001652539
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2025
Entity Common Stock, Shares Outstanding		142,332,019
Amendment Flag	false
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2025
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity File Number	000-56024
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Entity Address, Address Line One	200 Davenport Road
Entity Address, City or Town	Toronto
Entity Address, State or Province	ON
Entity Address, Postal Zip Code	M5R 1J2
City Area Code	416
Local Phone Number	223-8500
Entity Tax Identification Number	38-4039116
Document Quarterly Report	true