Fair Value Cash Flow Hedge Income Statement Location (Details) (USD $) In Millions | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |
| Cash Flow Hedge Gain (Loss) Reclassified to Income Statement Locations Paragraph Details [Abstract] | ||||
| Gains (Losses) On Interest Rate Swap Agreements | $ 80 | $ 10 | $ 113 | $ 30 |
| Foreign Exchange Mark to Market Expense (Income) | 4 | (18) | (34) | 2 |
Foreign Currency Exchange Contracts [Member] | ||||
| Cash Flow Hedge Income Statement Location [Line Items] | ||||
| Product sales | 10 | (7) | 26 | (13) |
| Costs of products sold | (8) | 11 | (24) | 20 |
| Cash Flow Hedge Gain Loss Reclassified To Selling General And Administrative Expense Net | (2) | 1 | 4 | (2) |
Commodity Contracts [Member] | ||||
| Cash Flow Hedge Income Statement Location [Line Items] | ||||
| Costs of products sold | $ 1 | $ (1) | $ 1 | $ (4) |