XML 113 R49.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Rationalization Charges - Activity in Rationalization Plan Reserves (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | [1] | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | [2] | Jun. 30, 2018 | [2] | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization Reserve Beginning Balance |  |  |  |  |  | $ 1,612 |  |  |  |  |  | $ 2,419 |  | $ 1,612 | $ 2,419 | $ 3,371
Rationalization charges | $ 7,800 | [1] | $ 3,200 | [1] | $ 39,300 | 6,100 | [1] | $ 4,800 | [2] | $ 300 | $ 500 | 700 | [2] | 56,351 | 6,253 | 5,826
Rationalization Plan Reserves Utilized and CTA |  |  |  |  |  |  |  |  |  |  |  |  |  | (14,250) | (7,060) | (6,778)
Rationalization Reserve Ending Balance | 43,713 |  |  |  |  |  |  | 1,612 |  |  |  |  |  | 43,713 | 1,612 | 2,419
Non-Cash Asset Write-Down |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization charges |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,519 | 4,821 | 3,191
Rationalization Plan Reserves Utilized and CTA |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,519) | (4,821) | (3,191)
Facility Closing [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization Reserve Beginning Balance |  |  |  |  |  | 1,482 |  |  |  |  |  | 2,397 |  | 1,482 | 2,397 | 2,426
Rationalization charges |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,336 | 534 | 1,380
Rationalization Plan Reserves Utilized and CTA |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,920) | (1,449) | (1,409)
Rationalization Reserve Ending Balance | 898 |  |  |  |  |  |  | 1,482 |  |  |  |  |  | 898 | 1,482 | 2,397
Employee Severance [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization Reserve Beginning Balance |  |  |  |  |  | 130 |  |  |  |  |  | $ 22 |  | 130 | 22 | 945
Rationalization charges |  |  |  |  |  |  |  |  |  |  |  |  |  | 49,496 | 898 | 1,255
Rationalization Plan Reserves Utilized and CTA |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,811) | (790) | (2,178)
Rationalization Reserve Ending Balance | 42,815 |  |  |  |  |  |  | 130 |  |  |  |  |  | 42,815 | 130 | 22
Metal container plant closings and the Central States Pension Plan withdrawal [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization charges |  |  | 46,200 |  |  |  |  |  |  |  |  |  |  |  |  |
Metal container plant closings and the Central States Pension Plan withdrawal [Member] | Facility Closing [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost |  |  | 3,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Metal container plant closings and the Central States Pension Plan withdrawal [Member] | Central States Pension Plan withdrawal [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost |  |  | 62,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization Plan [Member] | Other Restructuring [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining expenses for our rationalization plans expected in 2019 and thereafter | 2,200 |  |  |  |  |  |  |  |  |  |  |  |  | 2,200 |  |
Effect on Future Cash Flows, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,100 |  |
Accrued Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization Reserve Beginning Balance |  |  |  |  |  | 600 |  |  |  |  |  |  |  | 600 |  |
Rationalization Reserve Ending Balance | 5,000 |  |  |  |  |  |  | 600 |  |  |  |  |  | 5,000 | 600 |
Other Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization Reserve Beginning Balance |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |  | 1,000 |  |
Rationalization Reserve Ending Balance | $ 38,700 |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  | 38,700 | 1,000 |
Metal Containers [Member] | Facility Closings and Restructuring [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization charges |  |  |  |  |  |  |  |  |  |  |  |  |  | 49,425 | 5,316 | 3,308
Closures [Member] | Facility Closings and Restructuring [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization charges |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,562 | 180 | 1,042
Plastic Containers [Member] | Facility Closings and Restructuring [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rationalization charges |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 364 | $ 757 | $ 1,476
Annually over the next twenty years [Member] | Central States Pension Plan withdrawal [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accretion Expense |  |  | 1,100 |  |  |  |  |  |  |  |  |  |  |  |  |
Effect on Future Cash Flows, Amount |  |  | $ 3,100 |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | The first, second, third and fourth quarters of 2019 include rationalization charges of $6.1 million, $39.3 million, $3.2 million and $7.8 million, respectively. The third quarter of 2019 includes a loss on early extinguishment of debt of $1.7 million. The fourth quarter of 2019 includes costs attributed to announced acquisitions of $1.8 million.
[2] | The first, second, third and fourth quarters of 2018 include rationalization charges of $0.7 million, $0.5 million, $0.3 million and $4.8 million, respectively. The second quarter of 2018 includes a loss on early extinguishment of debt of $2.5 million.

X
- Definition Rationalization Plan Reserves Utilized and CTA + References No definition available. + Details
Name: | slgn_RationalizationPlanReservesUtilizedandCTA
Namespace Prefix: | slgn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6394232&loc=d3e17558-110866 + Details
Name: | us-gaap_AccretionExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The quantified amount of the future effect on cash flows. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
Name: | us-gaap_EffectOnFutureCashFlowsAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(d)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringAndRelatedCostExpectedCost1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expected cost remaining for the specified restructuring cost. + References No definition available. + Details
Name: | us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 http://asc.fasb.org/extlink&oid=115205541&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_RestructuringCostAndReserveAxis=slgn_AssetImpairmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_FacilityClosingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=slgn_MetalcontainerplantclosingsandtheCentralStatesPensionPlanwithdrawalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=slgn_CentralStatesPensionPlanwithdrawalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringPlanAxis=slgn_RationalizationPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_OtherRestructuringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_AccruedLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
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_RestructuringCostAndReserveAxis=slgn_FacilityClosingsandRestructuringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | slgn_PeriodAxis=slgn_AnnuallyoverthenexttwentyyearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |