Revenue Recognition (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition
Net sales	$ 7,126	$ 6,840	$ 6,583
Transferred at point in time | Net sales
Revenue Recognition
Percentage of revenue	85.00%
Products
Revenue Recognition
Net sales	$ 5,993	5,610	5,334
Other
Revenue Recognition
Net sales	75	126	133
Pork
Revenue Recognition
Net sales	1,941	1,851	1,774
Pork | Products
Revenue Recognition
Net sales	1,682	1,599
Pork | Transportation
Revenue Recognition
Net sales	8	10
Pork | Energy
Revenue Recognition
Net sales	219	210
Pork | Other
Revenue Recognition
Net sales	32	32
CT&M
Revenue Recognition
Net sales	3,994	3,672	3,428
CT&M | Products
Revenue Recognition
Net sales	3,981	3,654
CT&M | Other
Revenue Recognition
Net sales	13	18
Marine
Revenue Recognition
Net sales	1,005	1,061	1,057
Marine | Transportation
Revenue Recognition
Net sales	1,005	1,061
Sugar and Alcohol
Revenue Recognition
Net sales	106	121	184
Sugar and Alcohol | Products
Revenue Recognition
Net sales	95	112
Sugar and Alcohol | Energy
Revenue Recognition
Net sales	11	9
Power
Revenue Recognition
Net sales	64	117	122
Power | Energy
Revenue Recognition
Net sales	64	117
All Other
Revenue Recognition
Net sales	16	18	$ 18
All Other | Products
Revenue Recognition
Net sales	16	17
All Other | Transportation
Revenue Recognition
Net sales		1
Segment Totals
Revenue Recognition
Net sales	7,126	6,840
Segment Totals | Products
Revenue Recognition
Net sales	5,774	5,382
Segment Totals | Transportation
Revenue Recognition
Net sales	1,013	1,072
Segment Totals | Energy
Revenue Recognition
Net sales	294	336
Segment Totals | Other
Revenue Recognition
Net sales	$ 45	$ 50