Represents the 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

Represents the percentage of ownership interest sold by the entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	seb_
Data Type:	num:percentItemType
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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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

+ Details

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- Definition

Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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:
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Balance Type:
Period Type:

- Details

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

- Details

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Namespace Prefix:
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- Details

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Segment Information - Pork and Power Segments (Details) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 23, 2019 USD ($)	Dec. 31, 2020 segment	Dec. 31, 2019 USD ($)	Sep. 28, 2019
Segment Information
Number of reportable segments \| segment		6
Pork
Segment Information
Federal blender's credits recognized as revenue			$ 60
Pork \| Ethanol plant
Segment Information
Asset purchase	$ 40
Power \| Disposed of by sale
Segment Information
Percentage of ownership interest sold				29.90%