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Cover Page - shares
 9 Months Ended
Jun. 30, 2022
Aug. 04, 2022
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2022  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
Trading Symbol GLDM  
Entity Registrant Name WORLD GOLD TRUST  
Entity Central Index Key 0001618181  
Current Fiscal Year End Date --09-30  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Interactive Data Current Yes  
Document Transition Report false  
Entity Common Stock, Shares Outstanding   146,850,000
Title of 12(b) Security SPDR® Gold MiniSharesSM Trust  
Security Exchange Name NYSEArca  
Entity File Number 001-37996  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 36-7650517  
Entity Address, Address Line One WGC USA Asset Management Company, LLC  
Entity Address, City or Town New York  
Entity Address, Address Line Two 685 Third Avenue, 27th Floor  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10017  
City Area Code 212  
Local Phone Number 317-3800  
Document Quarterly Report true  
SPDR Gold Mini Shares Trust [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   146,850,000