Financial Instruments (Effect of Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	$ (8)	[1]	$ 39	[1]	$ (24)	[1]	$ 35	[1]
Amount of Gain (Loss) Recognized in Income	86	[2]	257	[2]	201	[2]	147	[2]
Other (Loss) Income, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on foreign currency denominated monetary assets and liabilities	(55)		(188)		(150)		(141)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	(8)	[1]	39	[1]	(24)	[1]	35	[1]
Amount of Gain (Loss) Recognized in Income	10	[2]	22	[2]	13	[2]	51	[2]
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	2	[1]	27	[1]	16	[1]	17	[1]
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Net Sales [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	7	[2]	4	[2]	3	[2]	7	[2]
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	(10)	[1]	12	[1]	(40)	[1]	18	[1]
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | COGS [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	11	[2]	19	[2]	25	[2]	48	[2]
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	0	[1]	0	[1]	0	[1]	0	[1]
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Expense [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(8)	[2],[3]	(1)	[2],[3]	(15)	[2],[3]	(4)	[2],[3]
Gain (loss) recognized in interest expense offset	0		0		0		0
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	0	[1]	0	[1]	0	[1]	0	[1]
Amount of Gain (Loss) Recognized in Income	76	[2]	235	[2]	188	[2]	96	[2]
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	0	[1]	0	[1]	0	[1]	0	[1]
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other (Loss) Income, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	90	[2],[4]	238	[2],[4]	196	[2],[4]	110	[2],[4]
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	0	[1]	0	[1]	0	[1]	0	[1]
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | COGS [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (14)	[2]	$ (3)	[2]	$ (8)	[2]	$ (14)	[2]

[1] OCI is defined as other comprehensive income (loss).

[2] For cash flow hedges, this represents the effective portion of the gain (loss) reclassified from accumulated OCI into income during the period. For the three and six months ended June 30, 2013 and 2012, there was no material ineffectiveness with regard to the company's cash flow hedges.

[3] Gain (loss) recognized in income of derivative is offset to $0 by gain (loss) recognized in income of the hedged item.

[4] Gain (loss) recognized in other income, net, was partially offset by the related gain (loss) on the foreign currency-denominated monetary assets and liabilities of the company's operations, which were $(55) and $(188) for the three months ended June 30, 2013 and 2012, respectively, and $(150) and $(141) for the six months ended June 30, 2013 and 2012, respectively.