Derivatives and Other Hedging Instruments (Effect of Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	$ 53	[1]	$ (58)	[1]	$ 5	[1]
Amount of Gain (Loss) Recognized in Income	543	[2]	24	[2]	(125)	[2]
Other income, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on foreign currency denominated monetary assets and liabilities	(472)		(163)		(58)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	53	[1]	(58)	[1]	5	[1]
Amount of Gain (Loss) Recognized in Income	(43)	[2]	(1)	[2]	54	[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]
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	(28)	[2],[3]	(26)	[2],[3]	(11)	[2],[3]
Gain (loss) recognized in interest expense, offset	0		0		0
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)	27	[1]	9	[1]	(2)	[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	15	[2]	1	[2]	21	[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)	26	[1]	(67)	[1]	7	[1]
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of goods sold [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(30)	[2]	24	[2]	44	[2]
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]
Amount of Gain (Loss) Recognized in Income	586	[2]	25	[2]	(179)	[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]
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other income, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	607	[2],[4]	35	[2],[4]	(157)	[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]
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (21)	[2]	$ (10)	[2]	$ (22)	[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 years ended December 31, 2014, 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 $(472), $(163) and $(58) for 2014, 2013 and 2012, respectively.