Inventories (Details) - USD ($) $ in Millions	Oct. 01, 2016	Dec. 31, 2015
At lower of LIFO cost or market:
Live hogs and materials	$ 255	$ 210
Fresh pork and materials	31	26
Inventories at lower of LIFO cost or market, Gross	286	236
LIFO adjustment	(25)	(28)
Total inventories at lower of LIFO cost or market	261	208
At lower of FIFO cost or market:
Grains, oilseeds and other commodities	315	330
Sugar produced and in process	37	52
Other	62	61
Total inventories at lower of FIFO cost or market	414	443
Grain, flour and feed at lower of weighted average cost or market	104	88
Total inventories	$ 779	$ 739