Summary of Significant Accounting Policies - Compensation Expense and Related Tax Benefit for Equity Based Payments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation expense	$ 28	$ 33	$ 20
Income tax benefit	9	11	7
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation expense	2	3	1
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation expense	6	8	4
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation expense	9	8	3
General and administration
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total compensation expense	$ 11	$ 14	$ 12