Inventories (Details) - USD ($) $ in Millions	Jun. 27, 2020	Dec. 31, 2019
At lower of LIFO cost or market:
Hogs and materials	$ 402	$ 387
Fresh pork and materials	37	46
LIFO adjustment	(61)	(64)
Total inventories at lower of LIFO cost or market	378	369
At lower of FIFO cost and net realizable value:
Grains, oilseeds and other commodities	325	353
Sugar produced and in process	36	17
Other	102	109
Total inventories at lower of FIFO cost and NRV	463	479
Grain, flour and feed at lower of weighted average cost and NRV	148	174
Total inventories	$ 989	$ 1,022