Lines of Credit, Long-Term Debt, Commitments and Contingencies (Details)								6 Months Ended
	Jun. 12, 2023 USD ($)	Nov. 11, 2022 employee	Sep. 23, 2022 claim	Sep. 30, 2021 USD ($)	Jul. 21, 2021 USD ($)	Jun. 28, 2018 plaintiff	Mar. 20, 2018 USD ($) subsidiary	Jul. 01, 2023 USD ($)	Dec. 31, 2018 plaintiff	Mar. 28, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 22, 2022 claim	May 15, 2018 USD ($)	Apr. 27, 2018 USD ($) employee
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Other long-term debt								$ 38,000,000			$ 38,000,000
Total debt at face value								706,000,000			710,000,000
Current maturities of long-term debt and unamortized discount								(8,000,000)			(8,000,000)
Long-term debt, less current maturities								698,000,000			702,000,000
Contingencies
Total liabilities								2,743,000,000			2,888,000,000
Assets								7,805,000,000			$ 7,902,000,000
Pork Product Purchasers | Pending Litigation
Contingencies
Number of plaintiffs | plaintiff						12			3
Pork Compensation Antitrust | Pending Litigation
Contingencies
Number of plaintiffs | employee		3
Cereoil Bankruptcy Trustee - Case One | Pending Litigation
Contingencies
Damages sought							$ 22,000,000
Damages sought, including interest								35,000,000
Number of subsidiaries | subsidiary							2
Cereoil Bankruptcy Trustee - Case Two | Pending Litigation
Contingencies
Number of individuals employed by Seaboard serving as directors | employee														2
Total liabilities								48,000,000						$ 53,000,000
Assets														$ 30,000,000
Cereoil Bankruptcy Trustee - Case Two | Pending Litigation | Maximum
Contingencies
Assets								17,000,000
Nolston Bankruptcy Trustee | Pending Litigation
Contingencies
Total liabilities								1,000,000					$ 29,000,000
Assets								$ 0					$ 15,000,000
Odette Blanco De Fernandez | Pending Litigation
Contingencies
Number of siblings added as plaintiffs					4
Term of concession to develop port facilities					70 years
Claimed ownership percentage of companies that owned concession and land					20.00%
DPP Class | Pending Litigation
Contingencies
Settlement amount	$ 10,000,000
HSBC | Pending Litigation
Contingencies
Number of claims | claim			1									7
Number of claims that were dismissed by a court | claim			6
Number of claims dismissed that can be refiled | claim			3
Number of claims dismissed that cannot be refiled unless successfully appealed | claim			3
Damages sought				$ 10,000,000
Interest and other relief sought				$ 3,000,000
Cereoil
Contingencies
Percentage of ownership								45.00%
Nolston
Contingencies
Percentage of ownership								45.00%
Committed and uncommitted bank lines
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Weighted average interest rate (as a percent)								7.08%			7.03%
Committed and uncommitted bank lines | Denominated in foreign currencies
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding								$ 133,000,000			$ 194,000,000
Committed and uncommitted bank lines | South African Rand
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding								119,000,000			174,000,000
Committed bank lines
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding								207,000,000			131,000,000
Maximum capacity								450,000,000		$ 450,000,000
Uncommitted bank lines
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding								237,000,000			326,000,000
Term loan due 2028
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Total debt at face value								$ 667,000,000			$ 670,000,000
Effective interest rate (as a percent)								6.83%			6.01%
Foreign subsidiary obligations
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Total debt at face value								$ 1,000,000			$ 2,000,000