Inventories (Details) - USD ($) $ in Millions	Oct. 02, 2021	Dec. 31, 2020
At lower of FIFO cost and net realizable value (NRV):
Hogs and materials	$ 481	$ 437
Pork products and materials	45	46
Grains, oilseeds and other commodities	569	380
Biodiesel	144	72
Sugar produced and in process	29	24
Other	57	61
Total inventories at lower of FIFO cost and NRV	1,325	1,020
Grain, flour and feed at lower of weighted average cost and NRV	217	158
Total inventories	$ 1,542	$ 1,178