Lines of Credit, Long-Term Debt, Commitments and Contingencies (Details) $ in Millions								6 Months Ended
	Sep. 23, 2022 claim	Sep. 30, 2021 USD ($)	Jul. 21, 2021 item	Jun. 28, 2018 plaintiff	May 15, 2018 USD ($)	Apr. 27, 2018 USD ($) employee	Mar. 20, 2018 USD ($) subsidiary	Dec. 31, 2018 plaintiff	Oct. 01, 2022 USD ($)	Sep. 22, 2022 claim	Dec. 31, 2021 USD ($)
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Other long-term debt									$ 38.0		$ 39.0
Total debt at face value									711.0		717.0
Current maturities of long-term debt and unamortized discount									(8.0)		(9.0)
Long-term debt, less current maturities									703.0		708.0
Contingencies
Assets									$ 7,744.0		$ 7,503.0
Pork Product Purchasers | Pending Litigation
Contingencies
Number of plaintiffs | plaintiff				12				3
Odette Blanco De Fernandez | Pending Litigation
Contingencies
Number of siblings added as plaintiffs | item			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
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		$ 10.0
Interest and other relief sought		$ 3.2
Cereoil | Cereoil Bankruptcy Trustee - Case One | Pending Litigation
Contingencies
Damages sought							$ 22.0
Number of subsidiaries | subsidiary							2
Cereoil | Cereoil Bankruptcy Trustee - Case Two | Pending Litigation
Contingencies
Damages sought						$ 23.0
Number of individuals employed by Seaboard serving as directors | employee						2
Total liabilities						$ 53.0
Assets						$ 30.0
Nolston | Nolston Bankruptcy Trustee | Pending Litigation
Contingencies
Damages sought					$ 8.0
Total liabilities					29.0
Assets					$ 15.0
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)									6.19%		2.71%
Committed and uncommitted bank lines | Denominated in foreign currencies
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding									$ 205.0		$ 218.0
Committed and uncommitted bank lines | South African Rand
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding									178.0		177.0
Committed bank line
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding									143.0		157.0
Maximum capacity									250.0		250.0
Uncommitted bank lines
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Lines of credit outstanding									347.0		359.0
Term loan due 2028
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Total debt at face value									$ 672.0		$ 677.0
Effective interest rate (as a percent)									4.74%		1.73%
Foreign subsidiary obligations
Lines of Credit, Long-Term Debt, Commitments and Contingencies
Total debt at face value									$ 1.0		$ 1.0