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Location on the Balance Sheet of Derivative Assets and Liabilities (Detail) (Fair Value, Inputs, Level 2, USD $)
In Millions, unless otherwise specified |
Mar. 31, 2013
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Dec. 31, 2012
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|---|---|---|
| Asset Derivatives | ||
| Asset Derivatives | $ 558 | $ 566 |
| Derivative Asset, Fair Value, Net | 530 | 540 |
| Derivative Liabilities [Abstract] | ||
| Liability Derivatives | 201 | 159 |
| Derivative Asset, Fair Value, Net | (173) | (133) |
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Designated as Hedging Instrument | Foreign Exchange Contracts | Other current assets
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| Asset Derivatives | ||
| Asset Derivatives | 67 | 27 |
| Derivative Asset, Fair Value, Net | 67 | 27 |
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Designated as Hedging Instrument | Foreign Exchange Contracts | Other noncurrent assets
|
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| Asset Derivatives | ||
| Asset Derivatives | 14 | 14 |
| Derivative Asset, Fair Value, Net | 14 | 12 |
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Designated as Hedging Instrument | Foreign Exchange Contracts | Other non-current liabilities
|
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| Derivative Liabilities [Abstract] | ||
| Liability Derivatives | 134 | 103 |
| Derivative Asset, Fair Value, Net | (134) | (101) |
|
Designated as Hedging Instrument | Interest Rate Contracts | Other current assets
|
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| Asset Derivatives | ||
| Asset Derivatives | 0 | 1 |
| Derivative Asset, Fair Value, Net | 0 | 1 |
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Designated as Hedging Instrument | Interest Rate Contracts | Other noncurrent assets
|
||
| Asset Derivatives | ||
| Asset Derivatives | 382 | 420 |
| Derivative Asset, Fair Value, Net | 362 | 406 |
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Designated as Hedging Instrument | Interest Rate Contracts | Other non-current liabilities
|
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| Derivative Liabilities [Abstract] | ||
| Liability Derivatives | 20 | 14 |
| Derivative Asset, Fair Value, Net | 0 | 0 |
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Designated as Hedging Instrument | Commodity Contract [Member] | Other current assets
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| Asset Derivatives | ||
| Asset Derivatives | 3 | 0 |
| Derivative Asset, Fair Value, Net | 3 | 0 |
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Designated as Hedging Instrument | Commodity Contract [Member] | Other current liabilities
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| Derivative Liabilities [Abstract] | ||
| Liability Derivatives | (12) | 0 |
| Derivative Asset, Fair Value, Net | 12 | 0 |
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Not Designated as Hedging Instrument | Foreign Exchange Contracts | Other current assets
|
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| Asset Derivatives | ||
| Asset Derivatives | 0 | 3 |
| Derivative Asset, Fair Value, Net | 0 | 3 |
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Not Designated as Hedging Instrument | Foreign Exchange Contracts | Other current liabilities
|
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| Derivative Liabilities [Abstract] | ||
| Liability Derivatives | (3) | (1) |
| Derivative Asset, Fair Value, Net | 3 | 1 |
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Not Designated as Hedging Instrument | Interest Rate Contracts | Other noncurrent assets
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| Asset Derivatives | ||
| Asset Derivatives | 92 | 101 |
| Derivative Asset, Fair Value, Net | 84 | 91 |
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Not Designated as Hedging Instrument | Interest Rate Contracts | Other non-current liabilities
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| Derivative Liabilities [Abstract] | ||
| Liability Derivatives | 32 | 41 |
| Derivative Asset, Fair Value, Net | $ (24) | $ (31) |