XML 41 R30.htm IDEA: XBRL DOCUMENT
v3.22.2

Rationalization Charges - Rationalization Charges by Business Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Restructuring Cost and Reserve [Line Items] |  |  |  |
Rationalization charges | $ 3,428 | $ 354 | $ 4,807 | $ 10,711
Dispensing and Specialty Closures |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Rationalization charges | 0 | 67 | 0 | 5,298
Metal Containers |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Rationalization charges | 3,428 | 225 | 4,702 | 5,246
Custom Containers |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Rationalization charges | $ 0 | $ 62 | $ 105 | $ 167

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
Name: | us-gaap_RestructuringSettlementAndImpairmentProvisions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=slgn_DispensingAndSpecialtyClosuresMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=slgn_MetalContainersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=slgn_CustomContainersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |