Pre- Tax Income Reconciliation (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	$ 2,549	$ 2,889	$ 2,809
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	3,833	3,901	3,938
Unallocated Amount To Segment Net Interest Expense
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	(128)	(87)	(54)
Unallocated Amount To Segment Certain Foreign Exchange Fluctuations and Hedging Activities
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	83	53	(16)
Unallocated Amount To Segment Stock Compensation
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	(150)	(130)	(119)
Unallocated Amount To Segment Business Optimization Charges
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	(280)	(150)	(192)
Unallocated Amount to Segment Average Wholesale Prices Litigation and Historical Price Reporting Charge
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes			(79)
Unallocated Amount To Segment Asset Impairment And Other Charges
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes			(103)
Unallocated Amount To Pension Settlement Charges
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes		(168)
Unallocated Amount to Segment Certain Tax and Legal Reserves
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	(104)
Unallocated Amount to Segment Other Corporate Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated income before income taxes	$ (705)	$ (530)	$ (566)