Components of Restructuring Charges (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 12	$ 3
Reserve adjustments		(14)
Employee Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	10	16
Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2
Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1
Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	3
Reserve adjustments		(7)
Cost of Goods Sold | Employee Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	10
Cost of Goods Sold | Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	7	2
Reserve adjustments		(5)
Selling, General and Administrative Expenses | Employee Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6	6
Selling, General and Administrative Expenses | Asset Impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1
Selling, General and Administrative Expenses | Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1
Research and Development Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3	(2)
Reserve adjustments		$ (2)
Research and Development Expenses | Employee Termination Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3