Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Aug. 05, 2019	Jun. 30, 2018
Document And Entity Information
Entity Registrant Name	GSG GROUP INC.
Entity Central Index Key	0001668523
Document Type	10-K
Amendment Flag	false
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	true
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Dec. 31, 2018
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018
Entity Common Stock Shares Outstanding		30,300,000
Entity Public Float			$ 0