Inventories (Details) - USD ($) $ in Millions	Jul. 03, 2021	Dec. 31, 2020
At lower of FIFO cost and net realizable value (NRV):
Hogs and materials	$ 467	$ 437
Pork products and materials	46	46
Grains, oilseeds and other commodities	576	380
Biodiesel	122	72
Sugar produced and in process	37	24
Other	43	61
Total inventories at lower of FIFO cost and NRV	1,291	1,020
Grain, flour and feed at lower of weighted average cost and NRV	206	158
Total inventories	$ 1,497	$ 1,178