Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	iShares Silver Trust
Trading Symbol	slv
Document Type	10-K
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding	333,550,000
Entity Public Float		$ 5,116,963,500
Amendment Flag	false
Entity Central Index Key	0001330568
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY