Segment and Geographic Area Information - Schedule of Reconciliation of Certain Segment Information to Consolidated Totals (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
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated sales	$ 5,585	$ 5,765	$ 5,849	$ 5,833	$ 5,898	$ 5,833	$ 5,963	$ 6,006	$ 23,032	$ 23,700	$ 24,951
Operating Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated sales									27,795	28,777	30,826
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated sales									(5,034)	(5,350)	(6,137)
Corporate, Non-Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated sales									$ 271	$ 273	$ 262