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Debt and Credit Facilities - Total Debt Outstanding (Parenthetical) (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Amount utilized under accounts receivable securitization program		$ 36,000,000see_AmountOfBorrowingOutstandingUnderAccountsReceivableSecuritizationProgram
Credit facility amount outstanding		23,000,000us-gaap_LineOfCredit
Short-term borrowings	85,200,000us-gaap_ShortTermBorrowings	130,400,000us-gaap_ShortTermBorrowings
Weighted average interest rate	5.30%us-gaap_DebtWeightedAverageInterestRate	5.20%us-gaap_DebtWeightedAverageInterestRate
Line of Credit [Member]
Debt Instrument [Line Items]
Short-term borrowings	85,000,000us-gaap_ShortTermBorrowings / us-gaap_ShortTermDebtTypeAxis = us-gaap_LineOfCreditMember	71,000,000us-gaap_ShortTermBorrowings / us-gaap_ShortTermDebtTypeAxis = us-gaap_LineOfCreditMember
Term Loan A Facility Due July 2017 [Member]
Debt Instrument [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Consumer	300,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember	300,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember
Credit facility amount outstanding	249,700,000us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember	249,700,000us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandSeventeenMember
Term loan facilities, prepayment due year	2016
Term Loan A Facility Due July 2019 [Member]
Debt Instrument [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Consumer	10,000,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember	10,600,000us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsConsumer / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember
Credit facility amount outstanding	1,106,900,000us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember	1,129,400,000us-gaap_LineOfCredit / us-gaap_LongtermDebtTypeAxis = see_TermLoanAFacilityDueTwoThousandNineteenMember
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
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
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
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
5.125% 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
6.875% Senior Notes Due July 2033 [Member]
Debt Instrument [Line Items]
Debt interest rate	6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember	6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember
Unamortized discount	$ 1,300,000us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember	$ 1,300,000us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = see_SixPointEightHundredSeventyFivePercentSeniorNotesDueJulyTwoThousandThirtyThreeMember

X

- Definition

Amount of borrowing outstanding under accounts receivable securitization program.

+ References

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- Definition

Line of credit facility prepayment period

+ References

No definition available.

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X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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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.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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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.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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- Definition

Reflects the cumulative amount of fees paid by consumer borrowers which have not yet been taken into income and unamortized costs incurred to originate consumer loans and leases, unamortized consumer loan commitments and consumer loan syndication fees, and premiums over or discounts from face amounts of consumer loans that are being amortized into income as an adjustment to yield.

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