Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Net sales:
Net sales	$ 1,651	$ 1,402	$ 4,921	$ 4,223
Cost of sales and operating expenses:
Total cost of sales and operating expenses	1,529	1,254	4,511	3,808
Gross income	122	148	410	415
Selling, general and administrative expenses	85	75	244	219
Operating income	37	73	166	196
Other income (expense):
Interest expense	(12)	(9)	(31)	(19)
Interest income	3	2	7	9
Interest income from affiliates		6	2	18
Loss from affiliates	(18)	(3)	(40)	(10)
Other investment income, net	40	54	15	119
Foreign currency gains, net	9	3	7	12
Miscellaneous, net	1	(2)	(1)	(5)
Total other income (expense), net	23	51	(41)	124
Earnings before income taxes	60	124	125	320
Income tax expense	(26)	(43)	(52)	(96)
Net earnings	34	81	73	224
Less: Net loss attributable to noncontrolling interests	1		1
Net earnings attributable to Seaboard	$ 35	$ 81	$ 74	$ 224
Earnings per common share	$ 29.93	$ 69.28	$ 62.96	$ 191.63
Other comprehensive income (loss), net of income tax benefit (expense) of $(1), $1, $0, and $0:
Foreign currency translation adjustment	$ (25)	$ (2)	$ (52)	$ (3)
Unrealized gain on investments				3
Unrecognized pension cost	1	1	(1)	3
Other comprehensive income (loss), net of tax	(24)	(1)	(53)	3
Comprehensive income	10	80	20	227
Less: Comprehensive loss attributable to noncontrolling interests	1		1
Comprehensive income attributable to Seaboard	$ 11	$ 80	$ 21	$ 227
Average number of shares outstanding (in shares)	1,170,550	1,170,550	1,170,550	1,170,550
Dividends declared per common share (in dollars per share)	$ 1.50	$ 1.50	$ 4.50	$ 4.50
Products
Net sales:
Net sales	$ 1,338	$ 1,135	$ 4,011	$ 3,413
Cost of sales and operating expenses:
Total cost of sales and operating expenses	1,267	1,028	3,721	3,106
Services
Net sales:
Net sales	273	238	815	732
Cost of sales and operating expenses:
Total cost of sales and operating expenses	235	206	717	641
Other
Net sales:
Net sales	40	29	95	78
Cost of sales and operating expenses:
Total cost of sales and operating expenses	$ 27	$ 20	$ 73	$ 61