Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Net sales:
Total net sales	$ 2,218	$ 2,388	$ 6,618	$ 7,280
Cost of sales and operating expenses:
Total cost of sales and operating expenses	2,081	2,223	6,265	6,985
Gross income	137	165	353	295
Selling, general and administrative expenses	105	98	311	295
Operating income	32	67	42
Other income (expense):
Interest expense	(21)	(9)	(50)	(41)
Interest income (includes $1, $1, $2 and $4 from affiliates)	16	18	52	45
Income from affiliates	17	23	59	74
Other investment income (loss), net	6	(7)	29	43
Foreign currency gains (losses), net	(9)		(21)	3
Miscellaneous, net		1	(1)	4
Total other income, net	9	26	68	128
Earnings before income taxes	41	93	110	128
Income tax benefit (expense)	(190)	33	(176)	34
Net earnings (loss)	(149)	126	(66)	162
Less: Net earnings attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Seaboard	$ (149)	$ 126	$ (66)	$ 162
Earnings (loss) per common share - basic (in dollars per share)	$ (153.44)	$ 108.55	$ (67.97)	$ 139.56
Earnings (loss) per common share - diluted (in dollars per share)	$ (153.44)	$ 108.55	$ (67.97)	$ 139.56
Average number of shares outstanding - basic (in shares)	971,055	1,160,779	971,055	1,160,779
Average number of shares outstanding - diluted (in shares)	971,055	1,160,779	971,055	1,160,779
Other comprehensive income (loss), net of income tax expense:
Foreign currency translation adjustment	$ 3	$ (3)	$ 1	$ 10
Unrecognized pension cost	1		3	4
Other comprehensive income (loss), net of tax	4	(3)	4	14
Comprehensive income (loss)	(145)	123	(62)	176
Less: Comprehensive income attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to Seaboard	(145)	123	(62)	176
Products
Net sales:
Total net sales	1,805	1,966	5,399	5,907
Cost of sales and operating expenses:
Total cost of sales and operating expenses	1,731	1,905	5,251	5,981
Services
Net sales:
Total net sales	344	349	1,042	1,185
Cost of sales and operating expenses:
Total cost of sales and operating expenses	305	276	891	882
Other
Net sales:
Total net sales	69	73	177	188
Cost of sales and operating expenses:
Total cost of sales and operating expenses	$ 45	$ 42	$ 123	$ 122