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Recently Issued Accounting Standards - Additional Information (Detail) - Accounting Standards Update 2015-03 And 2015-15 [Member] $ in Millions | Dec. 31, 2015 USD ($)
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Significant Accounting Policies [Line Items] |
Decrease in other assets | $ 35.9
Decrease in long-term debt | $ 35.9

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- Definition Decrease in long-term debt. + References No definition available. + Details
Name: | see_DecreaseInLongTermDebt
Namespace Prefix: | see_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Decrease in other current assets. + References No definition available. + Details
Name: | see_DecreaseInOtherAssets
Namespace Prefix: | see_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Significant accounting Policies. + References No definition available. + Details
Name: | see_SignificantAccountingPoliciesLineItems
Namespace Prefix: | see_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=see_AccountingStandardsUpdate201503And201515Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |