Property, Plant and Equipment, net (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 15,361	$ 14,877
Less: accumulated depreciation and amortization	(9,586)	(9,328)
Total property, plant, and equipment, net	5,775	5,549
Land
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	131	127
Buildings
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	6,401	6,385
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	7,624	7,389
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 1,205	$ 976