Summary of Accounting Policies - Plant Property, and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Plant, property, and equipment, at cost	$ 3,548	$ 3,418
Land, buildings, and improvements
Property, Plant and Equipment [Line Items]
Plant, property, and equipment, at cost	568	561
Machinery and equipment
Property, Plant and Equipment [Line Items]
Plant, property, and equipment, at cost	2,638	2,569
Other, including construction in progress
Property, Plant and Equipment [Line Items]
Plant, property, and equipment, at cost	$ 342	$ 288