Represents the capacity of the power generating facilities.

No definition available.

Name:	seb_CapacityOfPowerGeneratingFacility
Namespace Prefix:	seb_
Data Type:	num:powerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents an additional amount of investment made in equity method investee during the period.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentAdditionalInvestment
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the percentage of economic ownership in an equity method investee, which is higher than the percentage of voting interest due to warrants held by the entity.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentEconomicInterest
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of the equity method investee's earnings recorded as income from affiliates in the Consolidated Statements of Comprehensive Income.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentPercentOfEarningsRecordedAsIncomeFromAffiliates
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the equity method investee's intangible assets for goodwill.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentSummarizedFinancialInformationGoodwill
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of the equity method investee's intangible assets for trade name.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentSummarizedFinancialInformationIntangibleAssetsTradeName
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of third party debt reported by an equity method investment of the entity.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentSummarizedFinancialInformationThirdPartyDebt
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the additional equity interest in the equity method investee which can be acquired by the entity upon exercise of warrants.

+ References

No definition available.

+ Details

Name:	seb_EquityMethodInvestmentWarrantsAdditionalEquityInterestThatCanBeAcquired
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the excess of fair value of investments over the book value.

+ References

No definition available.

+ Details

Name:	seb_FairValueOfInvestmentsExceedingBookValue
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount in dollars per share of gain (loss) on sale or disposal of equity in securities of subsidiaries, net of tax.

+ References

No definition available.

+ Details

Name:	seb_GainOnSaleOfControllingInterestInSubsidiaryNetOfTax
Namespace Prefix:	seb_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of gain (loss) on sale or disposal of equity in securities of subsidiaries, net of tax.

+ References

No definition available.

+ Details

Name:	seb_GainOrLossOnSaleOfStockInSubsidiaryNetOfTax
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount of increase (decrease) in investments in affiliates, subsidiaries, associates and joint ventures.

+ References

No definition available.

+ Details

Name:	seb_IncreaseDecreaseInInvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the fair value of the investments before additional equity contributions.

+ References

No definition available.

+ Details

Name:	seb_InvestmentOwnedAtFairValueBeforeAdditionalEquityContribution
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the investment in equity and long-term advances.

+ References

No definition available.

+ Details

Name:	seb_InvestmentsInEquityAndLongTermAdvances
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The original principal amount of the loan provided to equity method investee.

+ References

No definition available.

+ Details

Name:	seb_LoanProvidedToEquityMethodInvesteeOriginalPrincipalAmount
Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the aggregate stated interest rate on the loan receivable.

+ References

No definition available.

+ Details

Name:	seb_LoansReceivableInterestRate
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the stated interest rate on the loan receivable that is payable in cash.

+ References

No definition available.

+ Details

Name:	seb_LoansReceivableInterestRatePayableInCash
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the stated interest rate on the loan receivable that is payable in kind.

+ References

No definition available.

+ Details

Name:	seb_LoansReceivableInterestRatePayableInKind
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of businesses.

+ References

No definition available.

+ Details

Name:	seb_NumberOfBusiness
Namespace Prefix:	seb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of processing plants held by an entity.

+ References

No definition available.

+ Details

Name:	seb_NumberOfProcessingPlants
Namespace Prefix:	seb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of ownership interest sold by the entity.

+ References

No definition available.

+ Details

Name:	seb_PercentageOfOwnershipInterestSold
Namespace Prefix:	seb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the period after which loan provided to affiliates can be converted into equity.

+ References

No definition available.

+ Details

Name:	seb_PeriodAfterWhichLoanProvidedToAffiliatesCanBeConvertedInToEquity
Namespace Prefix:	seb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period after which loan provided to affiliates can be repaid.

+ References

No definition available.

+ Details

Name:	seb_PeriodAfterWhichLoanProvidedToAffiliatesCanBeRepaid
Namespace Prefix:	seb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the time lag for reporting financial information of subsidiaries and affiliates.

+ References

No definition available.

+ Details

Name:	seb_SubsidiariesAndAffiliatesReportingPeriodLag
Namespace Prefix:	seb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period after which the loan receivable of the entity will mature.

+ References

No definition available.

+ Details

Name:	seb_TermOfLoanReceivable
Namespace Prefix:	seb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Original amount of cost-method investments at the acquisition date.

+ References

No definition available.

+ Details

Name:	us-gaap_CostMethodInvestmentsOriginalCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: 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

Reference 2: 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

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due within 1 year (or 1 business cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

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 210.5-02.3(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

Name:	us-gaap_DueFromAffiliateCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due after 1 year (or 1 business cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.11)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph a
-Article 5

+ Details

Name:	us-gaap_DueFromAffiliateNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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 210.5-02.3(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph k
-Subparagraph 2
-Article 4

+ Details

Name:	us-gaap_DueFromRelatedPartiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ References

+ Details

Name:	us-gaap_EquityMethodInvestmentAggregateCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

+ Details

Name:	us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 35
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=49116238&loc=d3e32787-111569

+ Details

Name:	us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of assets reported by an equity method investment of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(g))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721683-107760

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33912-111571

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph w
-Article 1

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph bb
-Article 1

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph g
-Subparagraph 1, 2
-Article 4

+ Details

Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of equity, including noncontrolling interest, reported by an equity method investment of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.g)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721683-107760

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

+ Details

Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of liabilities reported by an equity method investment of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33912-111571

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721683-107760

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(g))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph g
-Subparagraph 1, 2
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph w
-Article 1

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph bb
-Article 1

+ Details

Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721683-107760

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(g))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33912-111571

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph bb
-Article 1

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph w
-Article 1

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph g
-Subparagraph 1, 2
-Article 4

+ Details

Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

+ References

+ Details

Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

+ References

+ Details

Name:	us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (13)(g)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

Name:	us-gaap_GainOrLossOnSaleOfStockInSubsidiary
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.12)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 9
-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 11
-Article 7

+ Details

Name:	us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12.Column C.3,4)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-12C.Column C.7)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14.Column E.2,3)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13.Column C.6)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010

+ Details

Name:	us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

+ Details

Name:	us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_InvestmentsInAndAdvancesToAffiliatesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22580-107794

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22499-107794

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22583-107794

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

+ Details

Name:	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due after 1 year (or 1 business cycle).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Related Parties
-URI http://asc.fasb.org/extlink&oid=16382449

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.11)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph a
-Article 5

+ Details

Name:	us-gaap_NotesReceivableRelatedPartiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Minimum amount of other commitment maturing in the next fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromCollectionOfNotesReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or sale of an entity that is related to it but not strictly controlled.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.5)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

Name:	us-gaap_ProvisionForDoubtfulAccounts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=seb_PorkSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=seb_CommodityTradingAndMillingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=seb_MarineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=seb_SugarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=seb_TurkeyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=seb_PowerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=seb_TriumphFoodsLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=seb_DivestitureOfPortionOfDailysPremiumMeatsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_CD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_DO
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_BusinessesConductingFlourMaizeAndFeedMillingAndPoultryProductionAndProcessingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_BW
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_GM
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_KE
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_LS
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_NG
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_ZA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_TR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_ZM
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_BR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_CO
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_EC
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_HT
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_JM
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_BakeryBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_GrainTradingBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_AU
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_PE
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_UY
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_CargoTerminalBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_SugarRelatedBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=country_AR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_ButterballLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentAxis=us-gaap_SubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentAxis=us-gaap_LoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_FlourProductionBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_FlourMillingBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_SeaboardTriumphFoodsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_CommodityTradingBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=stpr_GA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_OilseedCrushingBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_CommodityTradingAndFlourMillingBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=seb_PorkProcessingFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ChangeInAccountingEstimateByTypeAxis=us-gaap_ChangeInAccountingMethodAccountedForAsChangeInEstimateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments in and Advances to Affiliates and Notes Receivable from Affiliates (Details) $ / shares in Units, $ in Millions					1 Months Ended		3 Months Ended				12 Months Ended
	May. 13, 2015 USD ($)	Sep. 27, 2014 USD ($) item $ / shares	Sep. 27, 2014 USD ($) item	Dec. 31, 2012 USD ($)	Sep. 28, 2013 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2015 USD ($)	Jul. 04, 2015 USD ($) MW	Dec. 31, 2014 USD ($)	Oct. 01, 2011 USD ($)	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jan. 30, 2016	Sep. 27, 2013	Jul. 27, 2013 USD ($)	Jan. 01, 2013 USD ($)	Dec. 31, 2006 USD ($)
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Investments in and advances to affiliates							$ 671		$ 543		$ 671	$ 543
Notes receivable from affiliates							200		197		200	197
Proceeds from the sale of controlling interest in a subsidiary												74
Gain (loss) on sale of controlling interest in subsidiary												66
Income (loss) from affiliates											70	37	$ (4)
Cumulative effect of a change in accounting method (see Note 1)													6
Principal payments received on notes receivable											2	2	19
Receivables due from affiliates							$ 86		202		$ 86	202
Pork
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership		50.00%	50.00%				50.00%				50.00%
Investments in and advances to affiliates							$ 115		80		$ 115	80
Income (loss) from affiliates											11	4
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											295	71
Net income (loss)											22	7
Total assets							247		175		247	175
Total liabilities							17		15		17	15
Total equity							230		160		230	160
Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Investments in and advances to affiliates							218		178		218	178
Income (loss) from affiliates											(50)	(24)	(1)
Excess of carrying value of investment in affiliates over entity's share of affiliates' book value							30				30
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											2,321	2,223	1,908
Net income (loss)											(52)	(20)	8
Total assets							1,265		1,132		1,265	1,132	1,039
Total liabilities							809		732		809	732	615
Total equity							456		400		456	400	424
Marine
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Investments in and advances to affiliates							19		17		19	17
Income (loss) from affiliates											2
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											38
Net income (loss)											11
Total assets							148		119		148	119
Total liabilities							30		36		30	36
Total equity							118		83		118	83
Sugar
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Investments in and advances to affiliates							3		3		3	3
Income (loss) from affiliates											1	1	1
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											9	9	12
Net income (loss)											2	2	1
Total assets							9		8		9	8	9
Total liabilities							2		2		2	2	3
Total equity							7		6		7	6	6
Turkey
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Investments in and advances to affiliates							282		245		282	245
Income (loss) from affiliates											103	54	(10)
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											1,902	1,833	1,730
Net income (loss)											195	104	(20)
Total assets							1,087		1,021		1,087	1,021	907
Total liabilities							541		547		541	547	505
Total equity							546		474		546	474	402
Power
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Investments in and advances to affiliates							34		20		34	20
Income (loss) from affiliates											3	2	6
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											141	50	135
Net income (loss)											12	9	34
Total assets							327		328		327	328	332
Total liabilities							219		230		219	230	243
Total equity							108		98		$ 108	98	$ 89
Minimum
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Time lag for reporting financial information of certain foreign subsidiaries and affiliates											1 month
Maximum
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Time lag for reporting financial information of certain foreign subsidiaries and affiliates											3 months
Triumph \| Pork
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership interest sold		50.00%	50.00%
Triumph \| Pork \| Divestiture of a 50% interest in Daily's
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Gain on sale of controlling interest in subsidiary, net of tax		$ 40
Democratic Republic of Congo
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Notes receivable from affiliates							$ 59				$ 59
Dominican Republic
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership								29.90%
Amount invested under equity method								$ 10
Capacity of power facility (in megawatts) \| MW								300
Amount invested under cost method																		$ 6
Dominican Republic \| Power
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							29.90%				29.90%
Number of businesses \| item											1
Amount invested under cost method								$ 6
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Botswana \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							49.00%				49.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Democratic Republic of Congo \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Gambia \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Kenya \| Minimum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							35.00%				35.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Kenya \| Maximum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							49.00%				49.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Lesotho \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Nigeria \| Minimum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							25.00%				25.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Nigeria \| Maximum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							48.00%				48.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| South Africa \| Minimum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							30.00%				30.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| South Africa \| Maximum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Turkey \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							25.00%				25.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Zambia \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							49.00%				49.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Brazil \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Colombia \| Minimum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							40.00%				40.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Colombia \| Maximum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							42.00%				42.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Ecuador \| Minimum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							25.00%				25.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Ecuador \| Maximum \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Haiti \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							23.00%				23.00%
Businesses conducting flour, maize and feed milling, and poultry production and processing \| Jamaica \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Bakery business \| Democratic Republic of Congo
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Investment in equity and long-term advances											$ 35
Bakery business \| Democratic Republic of Congo \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Reserve on remaining portion of advances and long-term notes receivable									11
Agricultural commodity trading businesses \| Australia \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							25.00%				25.00%
Agricultural commodity trading businesses \| Peru \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Agricultural commodity trading businesses \| Uruguay \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							45.00%				45.00%
Agricultural commodity trading businesses \| United States \| Commodity Trading and Milling
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							40.00%				40.00%
Cargo terminal business \| Jamaica \| Marine
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership		21.00%	21.00%				21.00%				21.00%
Investments in and advances to affiliates		$ 17	$ 17
Sugar related businesses \| Argentina
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Number of businesses \| item											2
Sugar related businesses \| Argentina \| Minimum \| Sugar
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							46.00%				46.00%
Sugar related businesses \| Argentina \| Maximum \| Sugar
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							50.00%				50.00%
Butterball, LLC
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage ownership acquired							50.00%				50.00%
Investee's intangible assets for trade name							$ 111				$ 111
Investee's intangible assets for goodwill							74				$ 74
Loan provided to affiliate				$ 81
Percentage of the Butterball's earnings recorded as income from affiliates in the Consolidated Statements of Comprehensive Income (as a percent)											52.50%
Butterball, LLC \| Subordinated loan
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Loan provided to affiliate						$ 100
Maturity period of unsecured subordinated loan provided						7 years
Interest rate on loan provided (as a percent)						15.00%								10.00%
Percentage of interest payable in cash						5.00%
Percentage of pay-in-kind interest						10.00%
Notes receivable from affiliates						$ 89	$ 158		141		$ 158	141
Butterball, LLC \| Detachable warrants
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Additional equity interest that can be acquired upon exercise of warrants (as a percent)							5.00%				5.00%
Economic interest (as a percent)							52.50%				52.50%
Notes receivable from affiliates						$ 11
Butterball, LLC \| Term loan
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Loan provided to affiliate										$ 13
Interest rate on loan provided (as a percent)							12.00%				12.00%
Notes receivable from affiliates							$ 8		8		$ 8	8
Flour production business \| Brazil
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership					50.00%
Percentage of interest payable in cash															50.00%
Percentage of pay-in-kind interest															50.00%
Investments in and advances to affiliates					$ 17
Reserve on remaining portion of advances and long-term notes receivable											22
Investment in business, advances and long-term note receivable							0				0
Additional investment or capital contribution											28
Income (loss) from affiliates											60	8
Note receivable from affiliate									14			14
Equity method investment and advances									12			12
Gross receivable due from affiliate							17		14		17	14
Bad debt expense for receivable from affiliates											9
Flour production business \| Brazil \| Commodity Trading and Milling
Combined condensed financial information of the non-controlled, non-consolidated affiliates
Net sales											53	114
Net income (loss)											69	16
Total assets							52		101		52	101
Third-party debt							$ 16		$ 15		$ 16	$ 15
Time lag for reporting financial information of certain foreign subsidiaries and affiliates											3 months
Flour production business \| Brazil \| Term loan
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Loan provided to affiliate					$ 13
Period after which loan provided to affiliates can be repaid					1 year
Period after which loan provided to affiliates can be converted into equity					1 year
Flour milling business \| Botswana
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							49.00%				49.00%
Amount invested under equity method											$ 8
Flour milling business \| Gambia
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership																50.00%
Investments in and advances to affiliates																$ 9
Flour milling business \| South Africa
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership					49.00%
Investments in and advances to affiliates					$ 7
Seaboard Triumph Foods \| Pork
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership	50.00%
Amount invested under equity method											26
Expected contribution in next fiscal year							$ 97				$ 97
Seaboard Triumph Foods \| Maximum \| Pork
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Commitment to contribute to joint venture	$ 207
Commodity trading business \| Georgia
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							40.00%				40.00%
Amount invested under equity method							$ 13
Oilseed crushing business \| Turkey
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							25.00%				25.00%
Amount invested under equity method											$ 10
Commodity trading and flour milling business \| Uruguay
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership							45.00%				45.00%
Amount invested under equity method											$ 10
Pork processing facility \| Pork
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Amount invested under equity method	26
Pork processing facility \| Maximum \| Pork
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Commitment to contribute to joint venture	$ 207
Disposed of by Sale \| Divestiture of a 50% interest in Daily's
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Proceeds from the sale of controlling interest in a subsidiary			74
Gain (loss) on sale of controlling interest in subsidiary			$ 66
Number of processing units \| item		2	2
Decrease (increase) in investments in and advances to affiliates			$ 74
Disposed of by Sale \| Pork \| Divestiture of a 50% interest in Daily's
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Excess of fair value over book value on sale		$ 33
Fair value of investment		74	74
Additional investment or capital contribution		2
Beginning total investment in affiliate		$ 76	$ 76
Disposed of by Sale \| Triumph \| Pork \| Divestiture of a 50% interest in Daily's
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Percentage of ownership interest sold		50.00%	50.00%
Proceeds from the sale of controlling interest in a subsidiary		$ 74
Gain (loss) on sale of controlling interest in subsidiary		$ 66
Gain on sale of controlling interest in subsidiary, net of tax (in dollars per share) \| $ / shares		$ 34.14
Change in accounting method \| Dominican Republic
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Cumulative effect of a change in accounting method (see Note 1)																	$ 6
Change in accounting method \| Dominican Republic \| Power
Investments in and Advances to Affiliates and Notes Receivable from Affiliates
Cumulative effect of a change in accounting method (see Note 1)								$ 6