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Document and Entity Information - shares
3 Months Ended
Dec. 31, 2017
Feb. 06, 2018
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2017  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Trading Symbol GLDW  
Entity Registrant Name World Currency Gold Trust  
Entity Central Index Key 0001618181  
Current Fiscal Year End Date --09-30  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   160,000