Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Net sales:
Total net sales	$ 2,430	$ 1,808	$ 4,489	$ 3,491
Cost of sales and operating expenses:
Total cost of sales and operating expenses	2,177	1,719	4,058	3,267
Gross income	253	89	431	224
Selling, general and administrative expenses	88	80	174	152
Operating income	165	9	257	72
Other income (expense):
Interest expense	(6)	(6)		(11)
Interest expense			4
Interest income	6	4	11	11
Income (loss) from affiliates	(5)	(17)	1	(21)
Other investment income (loss), net	46	128	117	(97)
Foreign currency gains (losses), net	(7)	(5)	2	(16)
Miscellaneous, net	1	1	7	2
Total other income (expense), net	35	105	142	(132)
Earnings (loss) before income taxes	200	114	399	(60)
Income tax expense	(24)	(141)	(44)	(70)
Net earnings (loss)	176	(27)	355	(130)
Less: Net loss attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Seaboard	$ 176	$ (27)	$ 355	$ (130)
Earnings (loss) per common share	$ 151.56	$ (23.51)	$ 305.59	$ (112.33)
Average number of shares outstanding (in shares)	1,160,779	1,160,779	1,160,779	1,162,307
Other comprehensive income (loss), net of income tax expense of $1, $1, $1 and $1:
Foreign currency translation adjustment	$ (15)	$ (19)		$ (16)
Unrecognized pension cost	4		$ 5	2
Other comprehensive income (loss), net of tax	(11)	(19)	5	(14)
Comprehensive income (loss)	165	(46)	360	(144)
Less: Comprehensive loss attributable to noncontrolling interests	0	0	0	0
Comprehensive income (loss) attributable to Seaboard	165	(46)	360	(144)
Products
Net sales:
Total net sales	2,089	1,589	3,820	2,971
Cost of sales and operating expenses:
Total cost of sales and operating expenses	1,894	1,520	3,500	2,798
Services
Net sales:
Total net sales	330	206	643	489
Cost of sales and operating expenses:
Total cost of sales and operating expenses	269	185	530	441
Other
Net sales:
Total net sales	11	13	26	31
Cost of sales and operating expenses:
Total cost of sales and operating expenses	$ 14	$ 14	$ 28	$ 28