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Commitments and Contingencies - Additional Information (Detail)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended
Mar. 31, 2014
USD ($)
Dec. 31, 2014
USD ($)
Mar. 31, 2015
USD ($)
Jul. 03, 2014
EUR (€)
May 25, 2010
Italian Ministry of Economic Development [Member]
Italy [Member]
EUR (€)
Mar. 31, 2014
Cryovac Transaction [Member]
USD ($)
Loss Contingencies [Line Items]            
Gain from Claims Settlement $ 21.1us-gaap_GainLossRelatedToLitigationSettlement         $ 21.0us-gaap_GainLossRelatedToLitigationSettlement
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= see_CryovacTransactionMember
Repayment of grant monies         5us-gaap_LossContingencyDamagesSoughtValue
/ us-gaap_RegulatoryAgencyAxis
= see_ItalianMinistryOfEconomicDevelopmentMember
/ us-gaap_StatementGeographicalAxis
= country_IT
 
Loss contingency liability     12us-gaap_LossContingencyAccrualAtCarryingValue 10us-gaap_LossContingencyAccrualAtCarryingValue    
Charges related to development grant matter   $ 14us-gaap_LitigationSettlementExpense