Debt Instrument Offer Price Percentage

No definition available.

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Namespace Prefix:	slgn_
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- Definition

Redemption Price Percent If Change in Control Occurs

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12355-112629

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12317-112629

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
Namespace Prefix:
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Period Type:

Long-Term Debt - 5% Senior Notes (Details) - USD ($)			3 Months Ended			12 Months Ended
Long-Term Debt - 5% Senior Notes (Details) - USD ($)	Apr. 16, 2018	Apr. 03, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Sep. 09, 2013
Debt, Long-term and Short-term, Combined Amount						$ 2,317,723,000	$ 2,564,270,000
Gain (Loss) on Extinguishment of Debt			$ (2,500,000)	$ (4,400,000)	$ (2,700,000)	(2,493,000)	(7,052,000)	$ 0
Senior Notes [Member] \| Five Percent Senior Notes due 2020 [Member]
Debt Instrument, Redemption Price, Percentage in Addition to Accrued and Unpaid Interest	100.00%	101.25%
Early Repayment of Senior Debt	$ 280,000,000	$ 220,000,000.0
Gain (Loss) on Extinguishment of Debt			$ (1,400,000)	$ (4,400,000)
Senior Notes [Member] \| Five and One Half Percent Senior Notes due 2022 [Member]
Debt Instrument Offering Price Percentage									100.00%
Redemption Price Percent If Change In Control Occurs in Addition to Accrued and Unpaid Interest									101.00%
Debt Instrument, Face Amount									$ 300,000,000
Five Percent Senior Notes due 2020 [Member]
Debt, Long-term and Short-term, Combined Amount						$ 0	$ 280,000,000	$ 500,000,000
Debt Instrument, Redemption, Period One [Member] \| Five and One Half Percent Senior Notes due 2022 [Member]
Debt Instrument, Redemption Price, Percentage in Addition to Accrued and Unpaid Interest						101.375%