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Segment Information-Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Information
Sales to External Customers	$ 1,651	$ 1,402	$ 4,921	$ 4,223
Operating Income (Loss)	37	73	166	196
Income (Loss) from Affiliates	(18)	(3)	(40)	(10)
Total Assets	5,435		5,435		$ 5,161
Investment in and Advances to Affiliates	823		823		851
Pork
Segment Information
Sales to External Customers	412	404	1,320	1,188
Income (Loss) from Affiliates	(8)	(4)	(21)	(1)
Investment in and Advances to Affiliates	207		207		231
Commodity Trading and Milling
Segment Information
Sales to External Customers	898	694	2,574	2,122
Income (Loss) from Affiliates	(4)	(1)	(10)	5
Investment in and Advances to Affiliates	260		260		240
Marine
Segment Information
Sales to External Customers	259	225	771	691
Income (Loss) from Affiliates		(1)	1	(7)
Investment in and Advances to Affiliates	29		29		28
Sugar
Segment Information
Sales to External Customers	43	50	155	138
Income (Loss) from Affiliates	1	1	1	1
Investment in and Advances to Affiliates	4		4		4
Power
Segment Information
Sales to External Customers	34	25	88	72
Income (Loss) from Affiliates	4	2	7	3
Investment in and Advances to Affiliates	31		31		38
Turkey
Segment Information
Income (Loss) from Affiliates	(11)		(18)	(11)
Investment in and Advances to Affiliates	292		292		310
All Other
Segment Information
Sales to External Customers	5	4	13	12
Segment Totals
Segment Information
Sales to External Customers	1,651		4,921
Operating Income (Loss)	45	79	182	215
Income (Loss) from Affiliates	(18)	(3)	(40)	(10)
Total Assets	3,716		3,716		3,353
Segment Totals \| Pork
Segment Information
Operating Income (Loss)	2	59	111	162
Total Assets	1,298		1,298		1,309
Segment Totals \| Commodity Trading and Milling
Segment Information
Operating Income (Loss)	21	7	30	25
Total Assets	1,467		1,467		964
Segment Totals \| Marine
Segment Information
Operating Income (Loss)	9	4	9	8
Total Assets	336		336		376
Segment Totals \| Sugar
Segment Information
Operating Income (Loss)	5	6	17	12
Total Assets	135		135		197
Segment Totals \| Power
Segment Information
Operating Income (Loss)	7	3	13	7
Total Assets	180		180		188
Segment Totals \| Turkey
Segment Information
Total Assets	292		292		315
Segment Totals \| All Other
Segment Information
Operating Income (Loss)	1		2	1
Total Assets	8		8		4
Corporate Items
Segment Information
Operating Income (Loss)	(8)	$ (6)	(16)	$ (19)
Total Assets	$ 1,719		$ 1,719		$ 1,808