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Document and Entity Information
 12 Months Ended
Dec. 31, 2018
shares
Document and Entity Information [Abstract]  
Entity Registrant Name B2Gold Corp.
Entity Central Index Key 0001429937
Current Fiscal Year End Date --12-31
Document Type 40-F
Document Period End Date Dec. 31, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus FY
Amendment Flag false
Entity Common Stock, Shares Outstanding (in shares) 994,621,917
Entity Current Reporting Status Yes