Name:	slgn_BusinessCombinationProvisionalInformationInventoryWriteupAdjustmentBeforeIncomeTaxesExcludedFromNetIncome
Namespace Prefix:	slgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Business Combination, Provisional Information, Inventory Write-up Adjustment, Before Income Taxes, Included in Pro Forma Net Income

No definition available.

Name:	slgn_BusinessCombinationProvisionalInformationInventoryWriteupAdjustmentBeforeIncomeTaxesIncludedinProFormaNetIncome
Namespace Prefix:	slgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Business Combination, Total Acquisition Related Cost

No definition available.

Name:	slgn_BusinessCombinationTotalAcquisitionRelatedCost
Namespace Prefix:	slgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460