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Summary of Significant Accounting Policies and Recently Issued Accounting Standards - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 Bank | Dec. 31, 2013 | Dec. 31, 2012 | Jan. 01, 2012
Significant Accounting Policies [Line Items] |  |  |  |  |
Effect of contingently issuable shares | 0.9 us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares | 0.7 us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares |  |  |
Charges for rebates and other allowances | 9.00%see_ChargesForRebatesAndOtherAllowancesRecognized | 9.00%see_ChargesForRebatesAndOtherAllowancesRecognized |  | 9.00%see_ChargesForRebatesAndOtherAllowancesRecognized |
Research and development costs | $ 135 us-gaap_ResearchAndDevelopmentExpense | $ 133 us-gaap_ResearchAndDevelopmentExpense |  | $ 135 us-gaap_ResearchAndDevelopmentExpense |
Tax benefits realization percentage upon settlement | 50.00%see_MinimumTaxBenefitLikelyOfBeingRealizedUponUltimateSettlementWithTaxAuthorityPercentage |  |  |  |
Number of banks involved in sale of fractional ownership interest of accounts receivable | 2 see_NumberOfBanksInvolvedInSaleOfFractionOfAccountsReceivable |  |  |  |
Inventories | 707.6 us-gaap_InventoryNet | 730.2 us-gaap_InventoryNet | [1] |  |
Retained earnings | 448.5 us-gaap_RetainedEarningsAccumulatedDeficit | 302.2 us-gaap_RetainedEarningsAccumulatedDeficit | [1] | 279.0 us-gaap_RetainedEarningsAccumulatedDeficit |
Percentage of identifiable intangible assets in consolidated total assets | 11.00%see_PercentageOfIdentifiableIntangibleAssetsInConsolidatedAssets | 11.00%see_PercentageOfIdentifiableIntangibleAssetsInConsolidatedAssets |  |  |
Minimum [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Finite lived identifiable intangible assets useful life | 3 years |  |  |  |
Minimum [Member] | Buildings [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Useful life | 20 years |  |  |  |
Minimum [Member] | Machinery and equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Useful life | 5 years |  |  |  |
Minimum [Member] | Other Property and Equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Useful life | 2 years |  |  |  |
Maximum [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Finite lived identifiable intangible assets useful life | 15 years |  |  |  |
Maximum [Member] | Buildings [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Useful life | 40 years |  |  |  |
Maximum [Member] | Machinery and equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Useful life | 10 years |  |  |  |
Maximum [Member] | Other Property and Equipment [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Useful life | 10 years |  |  |  |
Error Correction [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Inventories |  |  |  |  | 41.0 us-gaap_InventoryNet / us-gaap_ChangeInAccountingEstimateByTypeAxis = see_ErrorCorrectionMember
Retained earnings |  |  |  |  | $ 25.0 us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_ChangeInAccountingEstimateByTypeAxis = see_ErrorCorrectionMember
[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 Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 55 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2626-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 48 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e2538-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingently Issuable Shares -URI http://asc.fasb.org/extlink&oid=6508586 + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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