| **Certain Changes in Total Equity (Detail) (USD $)**                                                                                                   | 9 Months Ended    |     | 0 Months Ended    | 9 Months Ended |
|--------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------|-----|-------------------|----------------|
||
| **Accumulated Other Comprehensive Income (Loss) [Line Items]**                                                                                         |              |     |              |                |   |  |   |  |   |  |   |  |   |   |   |
| Proceeds from issuance of common stock                                                                                                                 |              |     |              |                |   |  |   |  |   |  |   |  |   | $ 2,300,000,000 |   |
| Noncontrolling interest, ownership percentage by noncontrolling owners                                                                                 |              |     |              |                |   |  |   |  |   |  |   |  |   | 19.80% |   |
| Treasury Stock, Value, Acquired, Cost Method                                                                                                           | 11,600,000,000    |     |              |                |   |  |   |  |   |  |   |  |   |   | 11,400,000,000 |
| Noncontrolling Interest, Ownership Percentage by Parent                                                                                                |              |     |              |                |   |  |   |  |   |  |   |  | 80.20% |   |   |
| **Accumulated Other Comprehensive Income (Loss) [Roll Forward]**                                                                                       |              |     |              |                |   |  |   |  |   |  |   |  |   |   |   |
| Balance, December 31, 2012                                                                                                                             | (5,953,000,000)   |     | (177,000,000)     |                | (88,000,000) |  | 163,000,000 |  | (6,110,000,000) |  | 259,000,000 |  |   |   |   |
| Other comprehensive income/(loss)(a)                                                                                                                   | (430,000,000)     | [1] | (920,000,000)     | [1]            | 163,000,000 | [1] | (116,000,000) | [1] | 477,000,000 | [1] | (34,000,000) | [1] |   |   |   |
| Balance, September 29, 2013                                                                                                                            | $ (6,383,000,000) |     | $ (1,097,000,000) |                | $ 75,000,000 |  | $ 47,000,000 |  | $ (5,633,000,000) |  | $ 225,000,000 |  |   |   |   |
|                                                                                                                                                        |
| [1]Amounts do not include foreign currency translation loss of $65 million attributable to noncontrolling interests for the first nine months of 2013. |

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Excess Consideration Above Net Book Value of Divested Interest
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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.
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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.
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Amount after tax of other comprehensive income (loss) attributable to parent entity.
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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.
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