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Commitments and Contingencies - Additional Information (Detail) In Millions, except Share data, unless otherwise specified | 0 Months Ended | 1 Months Ended | 12 Months Ended |  |  | 0 Months Ended
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Jun. 13, 2014 USD ($) | Apr. 04, 2014 | Feb. 03, 2014 USD ($) | Mar. 31, 2007 | Feb. 28, 2002 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2002 USD ($) | Jul. 03, 2014 EUR (€) | Sep. 19, 2008 Trust | May 25, 2010 Italian Ministry of Economic Development [Member] Italy [Member] EUR (€) | Feb. 03, 2014 WRG Asbestos PI Trust and WRG Asbestos PD Trust [Member] USD ($) | Jun. 13, 2014 WRG Asbestos PI Trust [Member] USD ($) | Feb. 03, 2014 WRG Asbestos PI Trust [Member]
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash payments under settlement agreement |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 929.7 us-gaap_LitigationSettlementAmount / dei_LegalEntityAxis = see_WilliamRussellGraceAsbestosPiTrustAndWilliamRussellGraceAsbestosPdTrustMember |  |
Original number of shares expected to be issued under settlement agreement, adjusted |  |  |  | 18,000,000 see_OriginalNumberOfSharesExpectToIssueUnderSettlementAgreementAdjusted |  |  |  |  |  |  |  |  |  |  |  | 18,000,000 see_OriginalNumberOfSharesExpectToIssueUnderSettlementAgreementAdjusted / dei_LegalEntityAxis = see_WilliamRussellGraceAsbestosPiTrustMember
Registration rights agreement dated |  |  | Feb. 03, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |
Cash payment for settlements |  |  | 555 see_CashPaymentForSettlementsWithCashAndCashEquivalents |  |  |  |  |  |  |  |  |  |  |  |  |
Cash payment for settlements |  |  | 260 see_CashPaymentForSettlementsWithBorrowingsAmount |  |  |  |  |  |  |  |  |  |  |  |  |
Cash payment for settlements |  |  | 115 see_CashPaymentForSettlementsWithAccountsReceivableSecuritizationAmount |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock repurchase value | 130.0 us-gaap_TreasuryStockValue |  |  |  |  | 481.4 us-gaap_TreasuryStockValue | 327.6 us-gaap_TreasuryStockValue | [1] |  |  |  |  |  |  | 130.0 us-gaap_TreasuryStockValue / dei_LegalEntityAxis = see_WilliamRussellGraceAsbestosPiTrustMember |
Number of common stock shares repurchased | 3,932,244 us-gaap_TreasuryStockSharesAcquired |  |  |  |  | 1,495,188 us-gaap_TreasuryStockSharesAcquired |  |  |  |  |  |  |  |  | 3,932,244 us-gaap_TreasuryStockSharesAcquired / dei_LegalEntityAxis = see_WilliamRussellGraceAsbestosPiTrustMember |
Common stock repurchase price per share | $ 33.06 us-gaap_TreasuryStockAcquiredAverageCostPerShare |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 33.06 us-gaap_TreasuryStockAcquiredAverageCostPerShare / dei_LegalEntityAxis = see_WilliamRussellGraceAsbestosPiTrustMember |
Date of shelf registration statement filed and became effective |  | Apr. 04, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net operating loss carry back, years |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |
Anticipated tax refund |  |  |  |  |  | 247 us-gaap_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority |  |  |  |  |  |  |  |  |  |
Original number of shares expect to be issued under settlement agreement |  |  |  |  |  |  |  |  |  | 9,000,000 see_OriginalNumberOfSharesExpectToIssueUnderSettlementAgreement |  |  |  |  |  |
Charge covering a cash payment that will be required to make under settlement agreement upon the effectiveness of an appropriate plan of reorganization |  |  |  |  |  |  |  |  |  | 513 us-gaap_PlanOfReorganizationAmountOfPrepetitionObligationsSettledOrToBeSettledInCashAtEffectiveDate |  |  |  |  |  |
Adjustment of company's common stock that is charged and expected to be issued under settlement agreement |  |  |  |  |  | To eighteen million shares upon the two-for-one stock split in March 2007 |  |  |  |  |  |  |  |  |  |
Percentage of annual interest that accrues on Settlement agreement charges from December 21, 2002 to the date of payment |  |  |  |  |  |  |  |  |  | 5.50%see_PercentageOfAnnualInterestThatAccruesOnSettlementAgreementChargesFromSpecifiedDateToDateOfPayment |  |  |  |  |  |
Stock split ratio |  |  |  | 2 us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 |  |  |  |  |  |  |  |  |  |  |  |
Establishment of asbestos trust under Section 524(g) |  |  |  |  |  |  |  |  |  |  |  | 2 see_EstablishmentOfClaimSettlementTrust |  |  |  |
Charges accrued for potential liabilities |  |  |  |  | 172 see_ChargesAccruedForPotentialLiabilities |  |  |  |  |  |  |  |  |  |  |
Repayment of grant monies |  |  |  |  |  |  |  |  |  |  |  |  | 5 us-gaap_LossContingencyDamagesSoughtValue / us-gaap_RegulatoryAgencyAxis = see_ItalianMinistryOfEconomicDevelopmentMember / us-gaap_StatementGeographicalAxis = country_IT |  |  |
Loss contingency liability |  |  |  |  |  | 13 us-gaap_LossContingencyAccrualAtCarryingValue |  |  |  |  | 10 us-gaap_LossContingencyAccrualAtCarryingValue |  |  |  |  |
Charges related to development grant matter |  |  |  |  |  | 14 us-gaap_LitigationSettlementExpense |  |  |  |  |  |  |  |  |  |
Principal contractual obligations including agreements to purchase an estimated amount of goods, including raw materials, or services |  |  |  |  |  | 353.7 us-gaap_RecordedUnconditionalPurchaseObligation |  |  |  |  |  |  |  |  |  |
Net rental expense |  |  |  |  |  | $ 71 us-gaap_OperatingLeasesRentExpenseNet | $ 79 us-gaap_OperatingLeasesRentExpenseNet |  | $ 84 us-gaap_OperatingLeasesRentExpenseNet |  |  |  |  |  |  |
[1] | Certain amounts have been revised to reflect the retrospective application of the Company’s change in inventory costing method for certain U.S. inventories to the FIFO method from the LIFO method. Refer to Note 2, “Summary of Significant Accounting Policies - Inventories,” of the notes to consolidated financial statements for further details surrounding this accounting policy change.

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