Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document Documentand Entity Information [Abstract]
Entity Registrant Name	Silgan Holdings Inc
Trading Symbol	SLGN
Entity Central Index Key	0000849869
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		63,410,057