| **Consolidated Statements of Changes in Equity - USD ($) $ in Millions** | Total    | Common Stock | Capital in Excess of Par Value | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Stock | Non-controlling Interests |
|--------------------------------------------------------------------------|----------|--------------|--------------------------------|-------------------|--------------------------------------|----------------|---------------------------|
| Beginning balance at Dec. 31, 2012                                       | $ 17,268 | $ 441        | $ 7,495                        | $ 9,609           | $ (476)                              | $ 0            | $ 199                     |
| **Comprehensive income:**                                                |     |         |                           |              |                                 |           |                      |
| Net (loss) income                                                        | 1,103    |         |                           | 1,096             |                                 |           | 7                         |
| Other comprehensive loss                                                 | (28)     |         |                           |              | (28)                                 |           |                      |
| Activity related to stock plans                                          | 78       | 3            | 75                             |              |                                 |           |                      |
| Repurchase and retirement of common stock                                | (350)    | (6)          | (344)                          |              |                                 |           |                      |
| Stock-based compensation cost                                            | 115      |         | 115                            |              |                                 |           |                      |
| Cash dividends ($0.68 per share)                                         | (267)    |         |                           | (267)             |                                 |           |                      |
| Net activity related to noncontrolling interests                         | (7)      |         |                           |              |                                 |           | (7)                       |
| Ending balance at Dec. 31, 2013                                          | 17,912   | 438          | 7,341                          | 10,438            | (504)                                | 0              | 199                       |
| **Comprehensive income:**                                                |     |         |                           |              |                                 |           |                      |
| Net (loss) income                                                        | 1,731    |         |                           | 1,719             |                                 |           | 12                        |
| Other comprehensive loss                                                 | (245)    |         |                           |              | (245)                                |           |                      |
| Activity related to stock plans                                          | 205      | 5            | 200                            |              |                                 |           |                      |
| Repurchase and retirement of common stock                                | (600)    | (9)          | (591)                          |              |                                 |           |                      |
| Stock-based compensation cost                                            | 122      |         | 122                            |              |                                 |           |                      |
| Cash dividends ($0.68 per share)                                         | (279)    |         |                           | (279)             |                                 |           |                      |
| Net activity related to noncontrolling interests                         | (116)    |         | (10)                           |              |                                 |           | (106)                     |
| Ending balance at Dec. 31, 2014                                          | 18,730   | 434          | 7,062                          | 11,878            | (749)                                | 0              | 105                       |
| **Comprehensive income:**                                                |     |         |                           |              |                                 |           |                      |
| Net (loss) income                                                        | (1,974)  |         |                           | (1,967)           |                                 |           | (7)                       |
| Other comprehensive loss                                                 | (256)    |         |                           |              | (256)                                |           |                      |
| Activity related to stock plans                                          | 95       | 3            | 101                            |              |                                 | (9)            |                      |
| Stock-based compensation cost                                            | 120      |         | 120                            |              |                                 |           |                      |
| Cash dividends ($0.68 per share)                                         | (297)    |         |                           | (297)             |                                 |           |                      |
| Net activity related to noncontrolling interests                         | (36)     |         | (22)                           |              |                                 |           | (14)                      |
| Ending balance at Dec. 31, 2015                                          | $ 16,382 | $ 437        | $ 7,261                        | $ 9,614           | $ (1,005)                            | $ (9)          | $ 84                      |

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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".
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No definition available.
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| - Definition
Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.
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| - Definition
Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after tax and reclassification adjustments of other comprehensive income (loss).
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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| - Definition
Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).
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| - Definition
Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
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