Segment Information - Disaggregation of sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Revenue Recognition
Net sales	$ 2,276	$ 1,645	$ 6,765	$ 5,136
Products
Revenue Recognition
Net sales	1,908	1,362	5,728	4,333
Other
Revenue Recognition
Net sales	13	26	39	57
Pork segment
Revenue Recognition
Net sales	620	466	1,878	1,380
Pork segment | Products
Revenue Recognition
Net sales	527	391	1,618	1,205
Pork segment | Transportation
Revenue Recognition
Net sales	3	2	6	6
Pork segment | Energy
Revenue Recognition
Net sales	84	65	236	145
Pork segment | Other
Revenue Recognition
Net sales	6	8	18	24
Commodity Trading and Milling
Revenue Recognition
Net sales	1,267	880	3,795	2,917
Commodity Trading and Milling | Products
Revenue Recognition
Net sales	1,264	877	3,784	2,906
Commodity Trading and Milling | Other
Revenue Recognition
Net sales	3	3	11	11
Marine
Revenue Recognition
Net sales	343	244	962	705
Marine | Transportation
Revenue Recognition
Net sales	343	244	962	705
Sugar and Alcohol
Revenue Recognition
Net sales	32	31	84	71
Sugar and Alcohol | Products
Revenue Recognition
Net sales	29	26	79	65
Sugar and Alcohol | Energy
Revenue Recognition
Net sales	3	5	5	6
Power
Revenue Recognition
Net sales	10	21	34	51
Power | Energy
Revenue Recognition
Net sales	10	21	34	51
All Other
Revenue Recognition
Net sales	4	3	12	12
All Other | Products
Revenue Recognition
Net sales	4	3	11	12
All Other | Transportation
Revenue Recognition
Net sales			1
Segment Totals
Revenue Recognition
Net sales	2,276	1,645	6,765	5,136
Segment Totals | Products
Revenue Recognition
Net sales	1,824	1,297	5,492	4,188
Segment Totals | Transportation
Revenue Recognition
Net sales	346	246	969	711
Segment Totals | Energy
Revenue Recognition
Net sales	97	91	275	202
Segment Totals | Other
Revenue Recognition
Net sales	$ 9	$ 11	$ 29	$ 35