Financial Instruments (Details) (USD $) In Millions | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Aug. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2011
Foreign Currency Forward Contracts [Member]
Marketing general and administrative [Member] | Sep. 30, 2010
Foreign Currency Forward Contracts [Member]
Marketing general and administrative [Member] | Sep. 30, 2011
Foreign Currency Forward Contracts [Member]
Marketing general and administrative [Member] | Sep. 30, 2010
Foreign Currency Forward Contracts [Member]
Marketing general and administrative [Member] | Sep. 30, 2011
Foreign Currency Forward Contracts [Member]
Other Current Assets [Member] | Dec. 31, 2010
Foreign Currency Forward Contracts [Member]
Other Current Assets [Member] | Sep. 30, 2011
Foreign Currency Forward Contracts [Member]
Other Accrued Liabilities [Member] | Dec. 31, 2010
Foreign Currency Forward Contracts [Member]
Other Accrued Liabilities [Member] | Sep. 30, 2011
Interest Rate Swaps [Member]
Interest Expense [Member] | Sep. 30, 2010
Interest Rate Swaps [Member]
Interest Expense [Member] | Sep. 30, 2011
Interest Rate Swaps [Member]
Interest Expense [Member] | Sep. 30, 2010
Interest Rate Swaps [Member]
Interest Expense [Member] | Sep. 30, 2011
Interest Rate Swaps [Member]
Other Assets [Member] | Dec. 31, 2010
Interest Rate Swaps [Member]
Other Assets [Member] | |
| Fair value of derivative instruments included in our consolidated condensed balance sheet | |||||||||||||||||
| Derivative Asset Designated as Hedging Instrument, Fair Value | $ 3 | $ 0 | $ 8 | $ 2 | $ 0 | $ 24 | |||||||||||
| Effects of derivative instruments in our consolidated condensed statement of operations | |||||||||||||||||
| Gain/(Loss) Recognized in Income | (3) | 11 | (6) | 1 | 2 | 2 | 8 | 12 | |||||||||
| Additional Financial Instruments (Textuals) [Abstract] | |||||||||||||||||
| Short-term investments Balances | 0 | 250 | |||||||||||||||
| Debt, fair value | 4,635 | 4,298 | |||||||||||||||
| Debt, carrying amount | 3,900 | 750 | 3,885 | ||||||||||||||
| Maximum maturity period for foreign currency forward contracts | 180 days | ||||||||||||||||
| Aggregate amount of foreign currency forward contracts outstanding | $ 157 | $ 156 | |||||||||||||||