Hedges and Derivative Financial Instruments (Schedule of Outstanding Derivative Contracts) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012		Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Derivative Assets, Current	$ 29		$ 36
Derivative Assets, Noncurrent	8		3
Total derivatives, hedge assets at fair value	37		39
Derivative Liabilities, Current	71		91
Derivative Liabilities, Noncurrent	2		5
Total derivatives, hedge liabilities at fair value	73		96
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional amount of foreign exchange forwards/options	1,227		862
Notional amount of commodity swaps/options	379		316
Notional Amount of Interest Rate Derivatives	0		250
Foreign exchange forward/options, hedge assets	6	[1]	24	[1]
Foreign Exchange Forwards/Options, Hedge Liability at Fair Value	24	[1]	19	[1]
Commodity Swaps/Options, Hedge Assets at Fair Value	22	[1]	9	[1]
Commodity Swaps/Options, Hedge Liabilities at Fair Value	7	[1]	28	[1]
Interest Rate Cash Flow Hedge Asset at Fair Value	0		0
Interest Rate Cash Flow Hedge Liability at Fair Value	0		5
Total derivatives accounted for as hedges, hedge assets at fair value	28		33
Total derivatives accounted for as hedges, hedge liabilities at fair value	31		52
Maximum term of foreign exchange forwards/options, in months	18		18
Maximum term of commodity swaps/options, in months	27 months		36 months
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge	0 months		6 months
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional amount of foreign exchange forwards/options	1,599		1,261
Notional amount of commodity swaps/options	7		3
Foreign Exchange Forwards/Options, Hedge Assets at Fair Value	9		6
Foreign Exchange Forwards/Options, Hedge Liabilities at Fair Value	42		43
Commodity swaps/options, hedge assets at fair value	0		0
Commodity Swaps/Options, hedge liabiilities at Fair Value	0		1
Total derivatives not accounted for as hedges, hedge assets at fair value	9		6
Total derivatives not accounted for as hedges, hedge liabilities at fair value	$ 42		$ 44
Maximum term of foreign exchange forwards/options, in months	11		3
Maximum term of commodity swaps/options, in months	15 months		11 months

[1] Derivatives accounted for as hedges are either considered cash flow (CF) or fair value (FV) hedges.