Segment and Geographic Area Information - Schedule of Geographic Information for Sales (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 5,585	$ 5,765	$ 5,849	$ 5,833	$ 5,898	$ 5,833	$ 5,963	$ 6,006	$ 23,032	$ 23,700	$ 24,951
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									11,766	12,361	12,295
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									3,240	3,222	3,587
Spain [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									2,282	1,203	1,487
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									1,221	1,244	1,371
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									862	807	825
Russia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									683	713	761
Hungary [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									555	492	665
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									524	949	1,025
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									475	438	412
Norway [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									283	820	927
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									259	326	283
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									230	216	229
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									157	379	537
Other Geographical Regions [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									$ 495	$ 530	$ 547