Represents the one-time Federal blender's credits recognized as revenue.

No definition available.

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

- Definition

Amount of tax expense (benefit) on Federal blender's credits recognized as revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	seb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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- 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

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=seb_NewFashionPorkLLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=seb_HogGrowingOperationsMember
Namespace Prefix:
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Segment Information - Pork Segment (Details) $ in Millions		3 Months Ended	12 Months Ended		24 Months Ended
Segment Information - Pork Segment (Details) $ in Millions	Aug. 30, 2017 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2018 segment	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)
Segment Information
Number of reportable segments \| segment			6
One-time Federal blender's credits recognized as revenue		$ 42
Tax expense (benefit) on Federal blender's credits recognized as revenue		(4)
Pork
Segment Information
One-time Federal blender's credits recognized as revenue		42
Tax expense (benefit) on Federal blender's credits recognized as revenue		$ 0
Pork \| New Fashion Pork, LLP
Segment Information
Acquisition of business, cash consideration	$ 40
Pork \| Hog growing operations
Segment Information
Acquisition of business, cash consideration				$ 219	$ 40