| **Earnings (Loss) Per Share Data (Narrative) (Details) - USD ($) $ in Millions** | 6 Months Ended |
|----------------------------------------------------------------------------------|----------------|
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| **Earnings Per Share [Abstract]**                                                |           |   |
| Treasury stock, shares, acquired (in shares)                                     | 550,000        | 445,000 |
| Purchase of treasury stock                                                       | $ 24           | $ 21 |

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| - References
No definition available.
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| - Definition
Number of shares that have been repurchased during the period and are being held in treasury.
+ References
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| - Definition
Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.
+ References
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