Basis of Presentation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended		12 Months Ended							0 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 ARGENTINA	Sep. 30, 2014 ARGENTINA	Sep. 30, 2014 SICAD I	Mar. 31, 2014 SICAD I	Dec. 31, 2013 Prior Periods	Sep. 30, 2014 Venezuelan bolívar fuerte	Feb. 08, 2013 Venezuelan bolívar fuerte	Jan. 02, 2010 Venezuelan bolívar fuerte	Sep. 30, 2014 Venezuelan bolívar fuerte SICAD I	Mar. 31, 2014 Venezuelan bolívar fuerte SICAD I	Sep. 30, 2014 Venezuelan bolívar fuerte SICAD II	Jan. 23, 2014 Argentina, Pesos	Sep. 30, 2014 Argentina, Pesos
Summary Of Significant Accounting Policies [Line Items]
Increase / (reduction) in cumulative net earnings					$ (59)					$ 94
Foreign currency exchange rate translation											6.30	6.30	4.30	11.50	10.70	49.99
Foreign currency impacts relating to highly inflationary accounting			(54)					(19)	(142)
Argentina peso devalued percentage against US Dollar																	15.00%	30.00%
Net revenue	8,337	8,472		25,414	25,811	180	520
Percentage of consolidated net revenues						2.20%	2.00%
Change in accounting policy effect of change on net revenue		19			19
Change in accounting policy effect of change on operating results		$ 3			$ 3