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Document And Entity Information
Nov. 30, 2021
shares
Document Information [Line Items]  
Entity Registrant Name GoldMining Inc.
Document, Type 40-F
Current Fiscal Year End Date --11-30
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2021
Document, Annual Report true
Document, Period End Date Nov. 30, 2021
Entity, File Number 001-39566
Entity, Incorporation, State or Country Code Z4
Entity, Address, Address Line One Suite 1830, 1030 West Georgia Street
Entity, Address, City or Town Vancouver
Entity, Address, State or Province BC
Entity, Address, Postal Zip Code V6E 2Y3
Entity, Address, Country CA
City Area Code 604
Local Phone Number 630-1000
Title of 12(b) Security Common shares
Trading Symbol GLDG
Security Exchange Name NYSEAMER
Entity, Common Stock Shares, Outstanding 150,242,110
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
Amendment Flag false
Entity Central Index Key 0001538847
Document Registration Statement false
Annual Information Form true
Audited Annual Financial Statements true
Business Contact [Member]  
Document Information [Line Items]  
Entity, Address, Address Line One 28 Liberty Street
Entity, Address, City or Town New York
Entity, Address, State or Province NY
Entity, Address, Postal Zip Code 10005
City Area Code 212
Local Phone Number 894-8940
Contact Personnel Name C T Corporation System