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Derivatives and Hedging Activities - Additional Information (Detail)			6 Months Ended
	Jun. 30, 2013 Derivative	Dec. 31, 2012 Derivative	Jun. 30, 2013 Foreign exchange option [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Maximum original maturity period of foreign currency forward contracts			12 months
Number of foreign exchange options outstanding	0	0
Number of interest rate and currency swap agreements outstanding	0	0

X

- Definition

Number of foreign exchange options outstanding.

+ References

No definition available.

+ Details

Name:	see_NumberOfForeignExchangeOptionsOutstanding
Namespace Prefix:	see_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of interest rate and Currency swap agreements outstanding.

+ References

No definition available.

+ Details

Name:	see_NumberOfInterestRateAndCurrencySwapAgreementsOutstanding
Namespace Prefix:	see_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

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

X

- Definition

Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_MaximumRemainingMaturityOfForeignCurrencyDerivatives1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration