|
Fair Values (Details 1) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Liabilities [Abstract] | ||
| Derivatives | $ 263 | $ 164 |
| Total liabilities | 263 | 164 |
| Level 1 [Member] | ||
| Liabilities [Abstract] | ||
| Derivatives | 0 | 0 |
| Total liabilities | 0 | 0 |
| Level 2 [Member] | ||
| Liabilities [Abstract] | ||
| Derivatives | 263 | 164 |
| Total liabilities | 263 | 164 |
| Level 3 [Member] | ||
| Liabilities [Abstract] | ||
| Derivatives | 0 | 0 |
| Total liabilities | $ 0 | $ 0 |