Inventories (Details) - USD ($) $ in Millions	Apr. 01, 2017	Dec. 31, 2016
At lower of LIFO cost or market:
Live hogs and materials	$ 284	$ 273
Fresh pork and materials	38	34
Inventories at lower of LIFO cost or market, Gross	322	307
LIFO adjustment	(21)	(21)
Total inventories at lower of LIFO cost or market	301	286
At lower of FIFO cost or market:
Grains, oilseeds and other commodities	340	279
Sugar produced and in process	32	30
Other	70	62
Total inventories at lower of FIFO cost or market	442	371
Grain, flour and feed at lower of weighted average cost or market	99	105
Total inventories	$ 842	$ 762