|
Goodwill and Other Intangible Assets (Goodwill) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
|
| Goodwill [Line Items] | ||
| Implied Fair Value Of Goodwill Exceeding Carrying Value Of Goodwill | $ 3,700 | |
| Goodwill, Period Increase (Decrease) | $ (1,169) | $ (776) |
| Maximum [Member] | ||
| Goodwill [Line Items] | ||
| Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount | 13.30% | |
| Minimum [Member] | ||
| Goodwill [Line Items] | ||
| Reporting Unit Percentage Of Fair Value In Excess Of Carrying Amount | 10.50% | |