Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Net sales:
Net sales	$ 1,579	$ 1,399
Cost of sales and operating expenses:
Total cost of sales and operating expenses	1,407	1,261
Gross income	172	138
Selling, general and administrative expenses	75	70
Operating income	97	68
Other income (expense):
Interest expense	(8)	(3)
Interest income	2	2
Interest income from affiliates	1	6
Income (loss) from affiliates	(6)	1
Other investment income (loss), net	(37)	37
Foreign currency gains, net	4	3
Miscellaneous, net	1	(2)
Total other income (loss), net	(43)	44
Earnings before income taxes	54	112
Income tax expense	(22)	(28)
Net earnings	32	84
Less: Net loss attributable to noncontrolling interests		1
Net earnings attributable to Seaboard	$ 32	$ 85
Earnings per common share	$ 26.75	$ 71.84
Other comprehensive income (loss), net of income tax expense of $0 and $(1):
Foreign currency translation adjustment	$ (10)	$ (2)
Unrealized gain on investments		1
Unrecognized pension cost	1	1
Other comprehensive loss, net of tax	(9)
Comprehensive income	23	84
Less: Comprehensive loss attributable to noncontrolling interests		1
Comprehensive income attributable to Seaboard	$ 23	$ 85
Average number of shares outstanding (in shares)	1,170,550	1,170,550
Dividends declared per common share (in dollars per share)	$ 1.50	$ 1.50
Products
Net sales:
Net sales	$ 1,291	$ 1,125
Cost of sales and operating expenses:
Total cost of sales and operating expenses	1,145	1,022
Services
Net sales:
Net sales	264	249
Cost of sales and operating expenses:
Total cost of sales and operating expenses	240	219
Other
Net sales:
Net sales	24	25
Cost of sales and operating expenses:
Total cost of sales and operating expenses	$ 22	$ 20