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Segment Information-Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 31, 2017
Segment Information
Sales to External Customers	$ 1,691	$ 1,422	$ 3,270	$ 2,821
Operating Income (Loss)	32	55	129	123
Income (Loss) from Affiliates	(16)	(8)	(22)	(7)
Total Assets	5,176		5,176		$ 5,161
Investment in and Advances to Affiliates	849		849		851
Pork
Segment Information
Sales to External Customers	442	414	908	784
Income (Loss) from Affiliates	(6)	3	(13)	3
Investment in and Advances to Affiliates	217		217		231
Commodity Trading and Milling
Segment Information
Sales to External Customers	890	701	1,676	1,428
Income (Loss) from Affiliates	(4)	2	(6)	6
Investment in and Advances to Affiliates	255		255		240
Marine
Segment Information
Sales to External Customers	263	232	512	466
Income (Loss) from Affiliates	1		1	(6)
Investment in and Advances to Affiliates	29		29		28
Sugar
Segment Information
Sales to External Customers	61	48	112	88
Investment in and Advances to Affiliates	4		4		4
Power
Segment Information
Sales to External Customers	31	23	54	47
Income (Loss) from Affiliates	1	1	3	1
Investment in and Advances to Affiliates	41		41		38
Turkey
Segment Information
Income (Loss) from Affiliates	(8)	(14)	(7)	(11)
Investment in and Advances to Affiliates	303		303		310
All Other
Segment Information
Sales to External Customers	4	4	8	8
Segment Totals
Segment Information
Sales to External Customers	1,691		3,270
Operating Income (Loss)	36	60	137	135
Income (Loss) from Affiliates	(16)	(8)	(22)	(7)
Total Assets	3,773		3,773		3,353
Segment Totals \| Pork
Segment Information
Operating Income (Loss)	17	52	109	102
Total Assets	1,313		1,313		1,309
Segment Totals \| Commodity Trading and Milling
Segment Information
Operating Income (Loss)	(2)	1	9	18
Total Assets	1,482		1,482		964
Segment Totals \| Marine
Segment Information
Operating Income (Loss)	4	1		4
Total Assets	338		338		376
Segment Totals \| Sugar
Segment Information
Operating Income (Loss)	10	3	12	6
Total Assets	144		144		197
Segment Totals \| Power
Segment Information
Operating Income (Loss)	6	2	6	4
Total Assets	186		186		188
Segment Totals \| Turkey
Segment Information
Total Assets	303		303		315
Segment Totals \| All Other
Segment Information
Operating Income (Loss)	1	1	1	1
Total Assets	7		7		4
Corporate Items
Segment Information
Operating Income (Loss)	(4)	$ (5)	(8)	$ (12)
Total Assets	$ 1,403		$ 1,403		$ 1,808