Inventories (Details) - USD ($) $ in Millions	Jul. 02, 2016	Dec. 31, 2015
At lower of LIFO cost or market:
Live hogs and materials	$ 235	$ 210
Fresh pork and materials	29	26
Inventories at lower of LIFO cost or market, Gross	264	236
LIFO adjustment	(28)	(28)
Total inventories at lower of LIFO cost or market	236	208
At lower of FIFO cost or market:
Grains, oilseeds and other commodities	241	330
Sugar produced and in process	43	52
Other	61	61
Total inventories at lower of FIFO cost or market	345	443
Grain, flour and feed at lower of weighted average cost or market	78	88
Total inventories	$ 659	$ 739