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Consolidated Statements of Cash Flows (Parenthetical) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Statement Of Cash Flows [Abstract] |
Interest payments related to settlement of agreement | $ 417 see_PaymentsOfInterestOnSettlementAgreement

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- Definition Payments of interest on settlement agreement. + References No definition available. + Details
Name: | see_PaymentsOfInterestOnSettlementAgreement
Namespace Prefix: | see_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration