v3.26.1
Document And Entity Information - shares
 6 Months Ended
Mar. 31, 2026
May 04, 2026
Document Information [Line Items]    
Entity Central Index Key 0001618181  
Entity Registrant Name WORLD GOLD TRUST  
Amendment Flag false  
Current Fiscal Year End Date --09-30  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-37996  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 36-7650517  
Entity Address, Address Line One c/o WGC USA Asset Management Company, LLC  
Entity Address, Address Line Two 685 Third Avenue, Suite 2702  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10017  
City Area Code 212  
Local Phone Number 317-3800  
Title of 12(b) Security SPDR® Gold MiniShares®  
Trading Symbol GLDM®  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   340,850,000
SPDR Gold Mini Shares Trust [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   340,850,000