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Segments - Assets by Reportable Segments (Parenthetical) (Detail) $ in Millions	Dec. 31, 2015 USD ($)
Kevothermal Business [Member] | Operating Segments [Member] | Product Care [Member]
Segment Reporting Information [Line Items]
Re-classification of assets	$ 2.3

X

- Definition

Reclassification of assets.

+ References

No definition available.

+ Details

Name:	see_ReclassificationOfAssets
Namespace Prefix:	see_
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_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsegmentsAxis=see_KevothermalBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=see_ProductCareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: