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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