Summary of Funded Status of Pension Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	$ 386	$ 421
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	(30)	(15)
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	(1)	(1)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(158)	(177)
Employee Benefit Plans [Abstract]
Benefit obligation at end of prior year	716	670
Service cost	5	5	$ 5
Interest cost	22	29	26
Plan amendments	0	(1)
Actuarial loss	(32)	72
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(30)	(34)
Benefit obligation at end of current year	656	716	670
Fair value of assets at end of prior year	553	517
Actual return on plan assets	5	56
Employer contributions	14	26
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(20)	(21)
Net benefits paid	(25)	(25)
Fair value of assets at end of current year	527	553	$ 517
Total unfunded status at end of year (recognized in other non-current liabilities in the Consolidated Balance Sheets)	(129)	(163)
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	$ 228	$ 243