| **Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions** | Total   | Common equities | Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income | Treasury Stock |
|-----------------------------------------------------------------------------------------------------------|---------|-----------------|-----------------|-------------------|----------------------------------------|----------------|
| Balance (in shares) at Dec. 31, 2013                                                                      |    | 163.1           |            |              |                                   |           |
| Balance at Dec. 31, 2013                                                                                  | $ 6,070 | $ 397           | $ 1,191         | $ 4,268           | $ 1,504                                | $ (1,290)      |
| Net Income                                                                                                | 358     |            |            | 358               |                                   |           |
| Other comprehensive income, net                                                                           | 154     |            |            |              | 154                                    |           |
| Dividends declared                                                                                        | (217)   |            |            | (217)             |                                   |           |
| Stock-based awards exercised and vested                                                                   |    | $ 0             |            |              |                                   |           |
| Treasury Stock, Shares, Acquired                                                                          |    | (0.5)           |            |              |                                   |           |
| Purchases                                                                                                 | (21)    |            |            |              |                                   | (21)           |
| Stock Issued During Period, Shares, Other                                                                 |    | 0.8             |            |              |                                   |           |
| Stockholders' Equity, Other                                                                               | 32      |            | 14              |              |                                   | 18             |
| Balance (in shares) at Sep. 30, 2014                                                                      |    | 163.4           |            |              |                                   |           |
| Balance at Sep. 30, 2014                                                                                  | $ 6,376 | $ 397           | 1,205           | 4,409             | 1,658                                  | (1,293)        |
| Balance (in shares) at Dec. 31, 2014                                                                      | 198.3   | 163.7           |            |              |                                   |           |
| Balance at Dec. 31, 2014                                                                                  | $ 6,573 | $ 397           | 1,214           | 4,505             | 1,744                                  | (1,287)        |
| Net Income                                                                                                | 478     |            |            | 478               |                                   |           |
| Other comprehensive income, net                                                                           | (464)   |            |            |              | (464)                                  |           |
| Dividends declared                                                                                        | (227)   |            |            | (227)             |                                   |           |
| Stock-based awards exercised and vested                                                                   |    | $ 0             |            |              |                                   |           |
| Treasury Stock, Shares, Acquired                                                                          |    | (0.8)           |            |              |                                   |           |
| Purchases                                                                                                 | (41)    |            |            |              |                                   | (41)           |
| Stock Issued During Period, Shares, Other                                                                 |    | 0.9             |            |              |                                   |           |
| Stockholders' Equity, Other                                                                               | $ 31    |            | 9               |              |                                   | 22             |
| Balance (in shares) at Sep. 30, 2015                                                                      | 198.3   | 163.8           |            |              |                                   |           |
| Balance at Sep. 30, 2015                                                                                  | $ 6,350 | $ 397           | $ 1,223         | $ 4,756           | $ 1,280                                | $ (1,306)      |

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| - Definition
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
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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
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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Amount after tax and reclassification adjustments of other comprehensive income (loss).
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Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.
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| - Definition
Value of stock issued as a result of the exercise of stock options.
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| - Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
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This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.
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Number of shares that have been repurchased during the period and are being held in treasury.
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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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