Amounts Recognized in Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Cost of Sales [Member] | Net Investment Hedging [Member]
Amounts recognized in accumulated other comprehensive income
Gain (loss) recognized in accumulated other comprehensive loss	$ (8)	$ 0	$ 4	$ 1
Gain (loss) reclassified from accumulated other comprehensive loss	(2)	3	(6)	5
Interest Expense [Member] | Fair Value Hedging [Member]
Amounts recognized in net income
Gain (loss) recognized in net income	0	0	0	0
Interest Rate Contract Floating to Fixed Interest Rate Swap [Domain] | Cost of Sales [Member] | Cash Flow Hedging [Member]
Amounts recognized in accumulated other comprehensive income
Gain (loss) recognized in accumulated other comprehensive loss	(1)	0	(2)	0
Gain (loss) reclassified from accumulated other comprehensive loss	(1)	0	(1)	0
Interest Rate Contract [Member] | Interest Expense [Member] | Fair Value Hedging [Member]
Amounts recognized in net income
Gain (loss) recognized in net income	24	8	14	2
Foreign Exchange Contract [Member] | Cost of Sales [Member] | Cash Flow Hedging [Member]
Amounts recognized in accumulated other comprehensive income
Gain (loss) recognized in accumulated other comprehensive loss	(3)	0	6	1
Gain (loss) reclassified from accumulated other comprehensive loss	1	0	(1)	0
Commodity Contract [Member] | Cost of Sales [Member] | Cash Flow Hedging [Member]
Amounts recognized in accumulated other comprehensive income
Gain (loss) recognized in accumulated other comprehensive loss	(4)	(1)	0	(1)
Gain (loss) reclassified from accumulated other comprehensive loss	(2)	3	(4)	5
Cross Currency Interest Rate Contract [Member] | Cost of Sales [Member] | Net Investment Hedging [Member]
Amounts recognized in accumulated other comprehensive income
Gain (loss) recognized in accumulated other comprehensive loss	0	1	0	1
Gain (loss) reclassified from accumulated other comprehensive loss	0	0	0	0
Related long term debt converted to floating interest rates by interest rate swaps [Member] | Interest Expense [Member] | Fair Value Hedging [Member]
Amounts recognized in net income
Gain (loss) recognized in net income	$ (24)	$ (8)	$ (14)	$ (2)