Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 13, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	TriLinc Global Impact Fund LLC
Entity Central Index Key	0001550453
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	000-55432
Entity Tax Identification Number	36-4732802
Entity Address, Address Line One	1230 Rosecrans Avenue
Entity Address, Address Line Two	Suite 605
Entity Address, City or Town	Manhattan Beach
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90266
City Area Code	310
Local Phone Number	997-0580
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes
Class A Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		17,953,806
Class C Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		7,996,481
Class I Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		10,543,017
Class W Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		24,555
Class Y Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,660,419
Class Z Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		8,423,851