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Restructuring and Relocation Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 0 Months Ended | 1 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jul. 23, 2014 Jobs | Jan. 31, 2015
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Restructuring payments including associated costs | $ 108.1 see_RestructuringPaymentsIncludingAssociatedCosts | $ 107.0 see_RestructuringPaymentsIncludingAssociatedCosts | [1] | $ 103.4 see_RestructuringPaymentsIncludingAssociatedCosts | [1] |  |
FUSION [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Start date when restructuring costs are to be incurred, year | 2015 |  |  |  |  |  |
End date when restructuring costs are to be incurred, year | 2017 |  |  |  |  |  |
Start date when capital expenditures are to be incurred, year | 2015 |  |  |  |  |  |
End date when capital expenditures are to be incurred, year | 2016 |  |  |  |  |  |
Jobs relocation period |  |  |  |  |  | 3 years |
Number of Jobs relocated from Elmwood park to Charlotte |  |  |  |  |  | 1,300 see_RestructuringAndRelatedCostNumberOfPositionsRelocated / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |
Restructuring payments including associated costs | 2.0 see_RestructuringPaymentsIncludingAssociatedCosts / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Restructuring expected accrual to pay | 4 see_RestructuringAccrualExpectedToPayInNextTwelveMonth / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Restructuring expected accrual remaining to pay | 2 see_RestructuringAccrualExpectedToPayInYearTwoAndThree / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Capital expenditures | 0 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
FUSION [Member] | Racine,Wisconsin |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Property, plant and equipment to assets held for sale | 26 us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentCurrent / us-gaap_RestructuringPlanAxis = see_FusionProgramMember / us-gaap_StatementGeographicalAxis = see_SaleOfBuildingInRacineWisconsinMember |  |  |  |  |  |
FUSION [Member] | Subsequent Event [Member] | Racine,Wisconsin |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Assets held for sale, sales price |  |  |  |  |  |  | 30 us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration / us-gaap_RestructuringPlanAxis = see_FusionProgramMember / us-gaap_StatementGeographicalAxis = see_SaleOfBuildingInRacineWisconsinMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Proceeds from assets held for sale |  |  |  |  |  |  | 24 us-gaap_ProceedsFromSaleOfPropertyHeldForSale / us-gaap_RestructuringPlanAxis = see_FusionProgramMember / us-gaap_StatementGeographicalAxis = see_SaleOfBuildingInRacineWisconsinMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Unsecured promissory note receivable from disposal of assets held for sale |  |  |  |  |  |  | 6 us-gaap_NotesReceivableGross / us-gaap_RestructuringPlanAxis = see_FusionProgramMember / us-gaap_StatementGeographicalAxis = see_SaleOfBuildingInRacineWisconsinMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Pre-tax gain on disposal of assets held for sale |  |  |  |  |  |  | 3 us-gaap_GainLossOnSaleOfPropertyPlantEquipment / us-gaap_RestructuringPlanAxis = see_FusionProgramMember / us-gaap_StatementGeographicalAxis = see_SaleOfBuildingInRacineWisconsinMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
EQIP [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Restructuring payments including associated costs | 113.0 see_RestructuringPaymentsIncludingAssociatedCosts / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Restructuring expected accrual to pay | 39 see_RestructuringAccrualExpectedToPayInNextTwelveMonth / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Restructuring expected accrual remaining to pay | 3 see_RestructuringAccrualExpectedToPayInYearTwoAndThree / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Capital expenditures | 28 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember | 11 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  | 0 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |
Expected completed date of restructuring program | Dec. 31, 2016 |  |  |  |  |  |
IOP [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Restructuring payments including associated costs | 220.0 see_RestructuringPaymentsIncludingAssociatedCosts / us-gaap_RestructuringPlanAxis = see_IntegrationAndOptimizationProgramMember |  |  |  |  |  |
Restructuring expected accrual to pay | 13 see_RestructuringAccrualExpectedToPayInNextTwelveMonth / us-gaap_RestructuringPlanAxis = see_IntegrationAndOptimizationProgramMember |  |  |  |  |  |
Capital expenditures |  | 14 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RestructuringPlanAxis = see_IntegrationAndOptimizationProgramMember |  | 14 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RestructuringPlanAxis = see_IntegrationAndOptimizationProgramMember |  |  |
Minimum [Member] | FUSION [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 275 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Expected net cash cost related to restructuring | 210 see_RestructuringAndRelatedCostExpectedCashCostNet / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Capital expenditures related to restructuring and associated activities | 55 see_CapitalExpenditureRelatedToRestructuringAndAssociatedActivities / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Minimum [Member] | FUSION [Member] | Severance and Termination Benefits [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 115 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Minimum [Member] | FUSION [Member] | Other Restructuring [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 160 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Minimum [Member] | EQIP [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 190 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Capital expenditures related to restructuring and associated activities | 50 see_CapitalExpenditureRelatedToRestructuringAndAssociatedActivities / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Reduction in headcount, employees | 750 us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Minimum [Member] | EQIP [Member] | Severance and Termination Benefits [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 105 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringCostAndReserveAxis = see_SeveranceAndTerminationBenefitsMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Minimum [Member] | EQIP [Member] | Facility Relocation and Closures [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 85 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Maximum [Member] | FUSION [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 285 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Expected net cash cost related to restructuring | 220 see_RestructuringAndRelatedCostExpectedCashCostNet / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Capital expenditures related to restructuring and associated activities | 65 see_CapitalExpenditureRelatedToRestructuringAndAssociatedActivities / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Maximum [Member] | FUSION [Member] | Severance and Termination Benefits [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 120 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Maximum [Member] | FUSION [Member] | Other Restructuring [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 165 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_RestructuringPlanAxis = see_FusionProgramMember |  |  |  |  |  |
Maximum [Member] | EQIP [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 210 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Capital expenditures related to restructuring and associated activities | 55 see_CapitalExpenditureRelatedToRestructuringAndAssociatedActivities / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Reduction in headcount, employees | 900 us-gaap_RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Maximum [Member] | EQIP [Member] | Severance and Termination Benefits [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 120 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringCostAndReserveAxis = see_SeveranceAndTerminationBenefitsMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Maximum [Member] | EQIP [Member] | Facility Relocation and Closures [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Expected associated cost related to restructuring | 90 us-gaap_RestructuringAndRelatedCostExpectedCost1 / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_RestructuringPlanAxis = see_EarningsQualityImprovementProgramMember |  |  |  |  |  |
Maximum [Member] | IOP [Member] |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Capital expenditures | $ 1 us-gaap_PaymentsToAcquireProductiveAssets / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_RestructuringPlanAxis = see_IntegrationAndOptimizationProgramMember |  |  |  |  |  |
[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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- Definition Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2473-110228 + Details
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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Subparagraph 3 -Article 9 + Details
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