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Debt and Credit Facilities - Total Debt Outstanding (Parenthetical) (Detail) (USD $) | 12 Months Ended | 1 Months Ended | 3 Months Ended | 0 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 | Nov. 30, 2014 | Dec. 31, 2014 | Oct. 16, 2014 | Dec. 31, 2013 | Nov. 30, 2012 | Mar. 31, 2013 | Sep. 30, 2012
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amount utilized under accounts receivable securitization program | $ 36,000,000 see_AmountOutstandingUnderAccountsReceivableSecuritizationProgram |  | $ 36,000,000 see_AmountOutstandingUnderAccountsReceivableSecuritizationProgram |  |  |  |  |  |
Credit facility amount outstanding | 23,000,000 us-gaap_LineOfCredit |  | 23,000,000 us-gaap_LineOfCredit |  | 0 us-gaap_LineOfCredit |  |  |  |
Short-term borrowings | 130,400,000 us-gaap_ShortTermBorrowings |  | 130,400,000 us-gaap_ShortTermBorrowings |  | 81,600,000 us-gaap_ShortTermBorrowings | [1] |  |  |
Weighted average interest rate | 5.20%us-gaap_DebtWeightedAverageInterestRate |  | 5.20%us-gaap_DebtWeightedAverageInterestRate |  | 6.20%us-gaap_DebtWeightedAverageInterestRate |  |  |  |
Term Loan A Facility Due July 2017 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility amount outstanding | 249,700,000 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember |  | 249,700,000 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember |  |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Consumer | 300,000 us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember |  | 300,000 us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember |  |  |  |  |  |
Term loan facilities, prepayment due year | 2016 |  |  |  |  |  |  |  |
Term Loan A Facility Due July 2019 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility amount outstanding | 1,129,400,000 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember |  | 1,129,400,000 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember |  | 684,500,000 us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Consumer | 10,600,000 us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember |  | 10,600,000 us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember |  | 8,400,000 us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember |  |  |  |
Term Loan B Facility Due October 2018 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Consumer |  |  |  |  | 7,300,000 us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanBFacilityDueOctoberTwoThousandEighteenMember |  |  |  |
Unamortized discount |  |  |  |  | 10,800,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = see_TermLoanBFacilityDueOctoberTwoThousandEighteenMember |  |  |  |
8.125% Senior Notes Due September 2019 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 8.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember | 8.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember | 8.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember |  | 8.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember |  |  |  |
Aggregate principal amount | 750,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember | 750,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember | 750,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_EightPointOneHundredTwentyFivePercentSeniorNotesDueTwoThousandNineteenMember |  |  |  |  |  |
Credit facility, maturity date |  | Sep. 15, 2019 | Sep. 01, 2019 |  |  |  |  |  |
6.50% Senior Notes Due December 2020 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member |  | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member |  | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member |  |
Aggregate principal amount |  |  |  |  |  |  | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member |  |
Credit facility, maturity date |  |  |  | Dec. 01, 2020 |  |  |  |  |
Unwound debt amount |  |  |  | 100,000,000 see_UnwoundDebtAmount / us-gaap_LongtermDebtTypeAxis = see_SeniorNotesSixPointFivePercentageDue2020Member |  |  |  |  |
8.375% Senior Notes Due September 2021 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 8.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointThreeHundredSeventyFivePercentSeniorNotesTwoThousandTwentyOneMember |  | 8.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointThreeHundredSeventyFivePercentSeniorNotesTwoThousandTwentyOneMember |  | 8.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_EightPointThreeHundredSeventyFivePercentSeniorNotesTwoThousandTwentyOneMember |  |  |  |
4.875% Senior Notes due December 2022 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 4.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember | 4.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember | 4.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember |  | 4.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember |  |  |  |
Aggregate principal amount | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FourPointEightHundredAndSeventyFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyTwoMember |  |  |  |  |  |
Credit facility, maturity date |  | Dec. 01, 2022 | Dec. 01, 2022 |  |  |  |  |  |
5.25% Senior Notes Due April 2023 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointTwoFivePercentSeniorNotesDueAprilTwoThousandTwentyThreeMember |  | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointTwoFivePercentSeniorNotesDueAprilTwoThousandTwentyThreeMember |  | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointTwoFivePercentSeniorNotesDueAprilTwoThousandTwentyThreeMember |  |  | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointTwoFivePercentSeniorNotesDueAprilTwoThousandTwentyThreeMember |
Aggregate principal amount |  |  |  |  |  |  |  | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FivePointTwoFivePercentSeniorNotesDueAprilTwoThousandTwentyThreeMember |
5.125% Senior Notes due December 2024 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 5.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember | 5.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember | 5.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember |  | 5.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember |  |  |  |
Aggregate principal amount | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember | 425,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = see_FivePointOneTwoFivePercentageSeniorNotesDueDecemberTwoThousandAndTwentyFourMember |  |  |  |  |  |
Credit facility, maturity date |  | Dec. 01, 2024 | Dec. 01, 2024 |  |  |  |  |  |
6.875% Senior Notes Due July 2033 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized discount | 1,300,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember |  | 1,300,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember |  | 1,400,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember |  |  |  |
Debt interest rate | 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember |  | 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember |  | 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember |  |  |  |
12% Senior Notes Due February 2014 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt interest rate | 12.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_TwelvePercentSeniorNotesDueFebruaryTwoThousandFourteenMember |  | 12.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_TwelvePercentSeniorNotesDueFebruaryTwoThousandFourteenMember |  | 12.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_TwelvePercentSeniorNotesDueFebruaryTwoThousandFourteenMember |  |  |  | 12.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_TwelvePercentSeniorNotesDueFebruaryTwoThousandFourteenMember
Senior Notes |  |  |  |  | 150,000,000 us-gaap_NotesPayable / us-gaap_LongtermDebtTypeAxis = see_TwelvePercentSeniorNotesDueFebruaryTwoThousandFourteenMember |  |  |  |
Line of Credit [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Short-term borrowings | $ 71,000,000 us-gaap_ShortTermBorrowings / us-gaap_ShortTermDebtTypeAxis = us-gaap_LineOfCreditMember |  | $ 71,000,000 us-gaap_ShortTermBorrowings / us-gaap_ShortTermDebtTypeAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |
[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 outstanding under accounts receivable securitization program. + References No definition available. + Details
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- Definition Line of credit facility prepayment period + References No definition available. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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 210.9-03.16) -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 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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