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Commitments and Contingencies (Details) | 12 Months Ended |
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Dec. 31, 2014 item | Sep. 19, 2012 item
Commitments and Contingencies |  |
Number of search warrants executed authorizing the seizure of certain records from Seaboard's offices in Merriam, Kansas and at the Seaboard Foods employment office and the human resources department in Guymon, Oklahoma. |  | 3 seb_NumberOfSearchWarrantsExecutedAuthorizingSeizureOfCertainRecords
Number of civil or criminal proceedings or charges filed | 0 us-gaap_LossContingencyNewClaimsFiledNumber |

X
- Definition Represents the number of search warrants executed authorizing the seizure of certain records. + References No definition available. + Details
Name: | seb_NumberOfSearchWarrantsExecutedAuthorizingSeizureOfCertainRecords
Namespace Prefix: | seb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

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- Definition The total number of new claims filed pertaining to a loss contingency during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration