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Document And Entity Information (USD $)
 12 Months Ended
Dec. 31, 2013
Feb. 26, 2014
Jun. 30, 2013
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Entity Filer Category Accelerated Filer    
Document Period End Date Dec. 31, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY    
Entity Registrant Name ETFS SILVER TRUST    
Entity Central Index Key 0001450922    
Current Fiscal Year End Date --12-31    
Entity Common Stock, Shares Outstanding   18,300,000  
Entity Current Reporting Status Yes    
Entity Public Float     $ 357,328,000
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No