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Commitments and Contingencies - Numbers of Items (Details) $ in Millions									6 Months Ended
	Nov. 11, 2022 employee	Sep. 23, 2022 claim	Sep. 30, 2021 USD ($)	Jul. 01, 2021 plaintiff	Jun. 28, 2018 plaintiff	May 15, 2018 USD ($)	Apr. 27, 2018 USD ($) employee	Mar. 20, 2018 USD ($) subsidiary	Dec. 31, 2018 plaintiff	Dec. 31, 2022 USD ($)	Sep. 22, 2022 claim	Dec. 31, 2021 USD ($)
Commitments and Contingencies
Total liabilities										$ 2,888		$ 3,069
Assets										$ 7,902		$ 7,503
Pork Product Purchasers \| Pending Litigation
Commitments and Contingencies
Number of plaintiffs \| plaintiff					12				3
Pork Compensation Antitrust \| Pending Litigation
Commitments and Contingencies
Number of plaintiffs \| employee	3
Odette Blanco De Fernandez \| Pending Litigation
Commitments and Contingencies
Number of siblings added as plaintiffs \| plaintiff				4
Term of concession to develop port facilities				70 years
Claimed ownership percentage of companies that owned concession and land				20.00%
HSBC \| Pending Litigation
Commitments and Contingencies
Damages sought			$ 10
Interest and other relief sought			$ 3
Number of claims that were dismissed by a court \| claim		6
Number of claims \| claim		1									7
Number of claims dismissed that can be refiled \| claim		3
Number of claims dismissed that cannot be refiled unless successfully appealed \| claim		3
Cereoil \| Cereoil Bankruptcy Trustee - Case Two \| Pending Litigation
Commitments and Contingencies
Damages sought							$ 23
Number of individuals employed by Seaboard serving as directors \| employee							2
Total liabilities							$ 53
Assets							$ 30
Nolston \| Nolston Bankruptcy Trustee \| Pending Litigation
Commitments and Contingencies
Damages sought						$ 8
Total liabilities						29
Assets						$ 15
Cereoil
Commitments and Contingencies
Percentage of ownership										45.00%
Cereoil \| Cereoil Bankruptcy Trustee - Case One \| Pending Litigation
Commitments and Contingencies
Damages sought								$ 22
Number of subsidiaries \| subsidiary								2
Nolston
Commitments and Contingencies
Percentage of ownership										45.00%