Financial Instruments (Schedule Of Effect Of Derivatives Recognized) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Schedule of Cost-method Investments [Line Items]
Long-term Debt, Current Maturities	$ 393				$ 89
Derivatives not designated as hedging instruments	(17)	[1]	6	[1]
Interest Rate Swaps [Member]
Schedule of Cost-method Investments [Line Items]
Derivative, Notional Amount	1,503
Foreign Exchange Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivative, Notional Amount	400
Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Schedule of Cost-method Investments [Line Items]
Interest rate swaps	1	[2]	0	[2]
Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	(18)	[3]	1	[3]
Not Designated As Hedging Instruments [Member] | Commodity Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	0	[4]	2	[4]
Not Designated As Hedging Instruments [Member] | Interest Rate Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	0	[5]	3	[5]
Operating Expense [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	4		2
Foreign Exchange Contract [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	$ 14		$ 1

[1] Gains (losses) related to derivative instruments are expected to be largely offset by (losses) gains on the underlying exposures being hedged.

[2] Recognized, net of tax, as a component of other comprehensive income within stockholders’ equity.

[3] For the three months ended March 31, 2014, included a $14 million loss in interest expense and a $4 million loss in operating expenses. For the three months ended March 31, 2013, included a $1 million loss in interest expense and a $2 million gain in operating expenses.

[4] Included in operating expenses.

[5] Included in interest expense.