Financial Instruments (Schedule Of Effect Of Derivatives Recognized) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Schedule of Cost-method Investments [Line Items]
Long-term Debt, Current Maturities	$ 89				$ 89				$ 89
Derivatives not designated as hedging instruments	(13)	[1]	37	[1]	(30)	[1]	43	[1]
Interest Rate Swaps [Member]
Schedule of Cost-method Investments [Line Items]
Derivative, Notional Amount	1,501				1,501
Foreign Exchange Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivative, Notional Amount	315				315
Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Schedule of Cost-method Investments [Line Items]
Interest rate swaps	(3)	[2]	1	[2]	(2)	[2]	1	[2]
Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	(11)	[3]	34	[3]	0	[4]	7	[4]
Not Designated As Hedging Instruments [Member] | Commodity Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	1	[5]	(2)	[5]	(29)	[3]	35	[3]
Not Designated As Hedging Instruments [Member] | Interest Rate Contracts [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	0	[4]	4	[4]	1	[5]	0	[5]
Operating Expense [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments			4		3		6
Foreign Exchange Contract [Member]
Schedule of Cost-method Investments [Line Items]
Derivatives not designated as hedging instruments	$ 11		$ 30		$ 26		$ 29

[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 June 30, 2014, included a $11 million loss in interest expense and for the six months ended June 30, 2014, included a $26 million loss in interest expense and a $3 million loss in operating expense. For the three months ended June 30, 2013 included a $30 million gain in interest expense and a $4 million gain in operating expense and for the six months ended June 30, 2013, included a $29 million gain in interest expense and a $6 million gain in operating expenses.

[4] Included in interest expense.

[5] Included in operating expenses.