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Shareholders' Equity - Classification of Pre-Payroll Tax and Social Contribution Stock-Based Compensation Expense Included in Consolidated Statements of Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-payroll tax and social contribution compensation	$ 11	$ 29	$ 34
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-payroll tax and social contribution compensation	2	5	6
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-payroll tax and social contribution compensation	6	16	18
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-payroll tax and social contribution compensation	$ 3	$ 8	$ 10

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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