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v2.4.1.9

Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Reconciliation of Plan Asset Measured Using Level 3 Inputs (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets at beginning of period | $ 1,023.2 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets | $ 961.6 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Foreign exchange impact | (115.6)us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation | 12.0 us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation
Fair value of plan assets at end of period | 1,045.0 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets | 1,023.2 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Level 3 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets at end of period | 123.2 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 87.5 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
U.S. and Non-U.S. [Member] | Level 3 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets at beginning of period | 87.5 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 68.1 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Gains on assets still held at end of year | 5.3 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 0.1 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Losses on assets sold during year |  | 12.9 us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Transfers in and/or out of Level 3 | 41.8 us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 4.0 us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Foreign exchange impact | (11.4)us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | 2.4 us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Fair value of plan assets at end of period | $ 123.2 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member | $ 87.5 us-gaap_DefinedBenefitPlanFairValueOfPlanAssets / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = see_UnitedStatesAndNonUnitedStatesPensionPlanDefinedBenefitMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member

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- Definition Actual return on plan assets, separately identifying the amount related to assets sold during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920 + Details
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- Definition Actual return on plan assets, separately identifying the amount related to assets still held at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(iv)(02)(A) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920 + Details
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- Definition Fair value of assets transferred into (out of) a defined benefit pension plan. + References No definition available. + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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- Definition Amount of gain (loss) from foreign currency exchange rate changes for benefit obligation for plans of a foreign operation whose functional currency is not the reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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