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Segments - Net Sales and Adjusted EBITDA of Reportable Segments (Parenthetical) (Detail) - Kevothermal Business [Member] - Operating Segments [Member] - Product Care [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Reclassified sales	$ 13.1	$ 7.6
Reclassified adjusted EBITDA	$ 3.1	$ 1.0

X

- Definition

Reclassified adjusted earnings before interest taxes depreciation and amortization.

+ References

No definition available.

+ Details

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Namespace Prefix:	see_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Reclassified sales revenue net.

+ References

No definition available.

+ Details

Name:	see_ReclassifiedSalesRevenueNet
Namespace Prefix:	see_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

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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: