Property, Plant and Equipment - Property, Plant and Equipment at Cost and Accumulated Depreciation (Details) - USD ($) $ in Millions	Jan. 01, 2017	Jan. 03, 2016
Property, Plant and Equipment, Net [Abstract]
Land and land improvements	$ 753	$ 780
Buildings and building equipment	10,112	9,829
Machinery and equipment	23,554	22,511
Construction in progress	3,354	3,528
Total property, plant and equipment, gross	37,773	36,648
Less accumulated depreciation	21,861	20,743
Total property, plant and equipment, net	$ 15,912	$ 15,905