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Stockholders' Equity - Additional Information 2 (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Period in the beginning of each year to award Performance Share Unit	90 days
PSU awards performance period	3 years
PSU awards performance period beginning date	Jan. 01, 2015
PSU awards performance period Ending date	Dec. 31, 2017
Target level for the determination of performance goals and measures	100.00%see_TargetLevelForDeterminationOfPerformanceGoalsMeasures
Targeted number of common stock shares to be earned under the performance incentive plan at ROIC target level	65,796see_TargetedNumberOfCommonStockSharesToBeEarnedUnderPerformanceIncentivePlanAtRoicTargetLevel
Performance Share Units "PSU" Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividends accrued in other current liabilities	1us-gaap_DividendsPayableCurrent / us-gaap_AwardTypeAxis = see_PsuAwardsMember	$ 2us-gaap_DividendsPayableCurrent / us-gaap_AwardTypeAxis = see_PsuAwardsMember
2015 Three-year PSU Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Targeted number of common stock shares to be earned under the performance incentive plan	224,760see_TargetedNumberOfCommonStockSharesToBeEarnedUnderPerformanceIncentivePlan / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember
Per share price of common stock	46.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember
Valuation per share	59.91see_Valuation / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember
Target level for the determination of performance goals and measures	100.00%see_TargetLevelForDeterminationOfPerformanceGoalsMeasures / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember
Targeted number of common stock shares to be earned under the performance incentive plan at ROIC target level	158,964see_TargetedNumberOfCommonStockSharesToBeEarnedUnderPerformanceIncentivePlanAtRoicTargetLevel / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember
2015 Three-year PSU Awards [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares to be issued as a percentage of target shares under the performance incentive plan	0.00%see_SharesToBeIssuedAsPercentageOfTargetSharesUnderPerformanceIncentivePlan / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember / us-gaap_RangeAxis = us-gaap_MinimumMember
2015 Three-year PSU Awards [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares to be issued as a percentage of target shares under the performance incentive plan	200.00%see_SharesToBeIssuedAsPercentageOfTargetSharesUnderPerformanceIncentivePlan / us-gaap_AwardTypeAxis = see_TwoThousandFifteenThreeYearPsuAwardsMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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Performance stock unit award beginning period date.

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Targeted number of common stock shares to be earned under the performance incentive plan.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Current Liabilities

-URI http://asc.fasb.org/extlink&oid=6509677



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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