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Other Current and Non-Current Liabilities - Components of Other Current and Other Non-Current Liabilities (Parenthetical) (Detail) - Restatement Adjustment [Member] $ in Millions	Dec. 31, 2015 USD ($)
Property Plant And Equipment [Line Items]
Increase to property and equipment, net	$ 15.0
Increase to other non-current liabilities	$ 15.0

X

- Definition

Increase to other liabilities noncurrent.

+ References

No definition available.

+ Details

Name:	see_IncreaseToOtherLiabilitiesNoncurrent
Namespace Prefix:	see_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Increase to property plant and equipment net.

+ References

No definition available.

+ Details

Name:	see_IncreaseToPropertyPlantAndEquipmentNet
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_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_RestatementAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: