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Redemption Price of Notes Plus Accrued and Unpaid Interest Thereon to Redemption Date (Detail) (5% Senior Notes) | Dec. 31, 2012
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Redemption 2016 |
Debt Instrument [Line Items] |
Redemption price as percentage of principal amount | 102.50%
Redemption 2017 |
Debt Instrument [Line Items] |
Redemption price as percentage of principal amount | 101.25%
Redemption 2018 and Thereafter |
Debt Instrument [Line Items] |
Redemption price as percentage of principal amount | 100.00%

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- Definition Debt Redemption Price Percent Of Principal Amount + References No definition available. + Details
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Namespace Prefix: | slgn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration