Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Line Items]
Effective income tax rate	59.70%	34.50%	39.90%	28.10%
Discrete income tax expense			$ 24,000,000
Effective income tax rate, increase in unrecognized tax benefits			7,000,000
Venezuela [Member]
Income Tax Disclosure [Line Items]
Effective tax rate, ceasing operations of Venezuelan subsidiaries			$ 52,000,000
Foreign currency exchange losses related to Venezuelan subsidiaries	$ (30,000,000)
Tax benefits related to Venezuelan subsidiaries	$ 0