|
Financial Derivatives (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
|
| Derivative [Line Items] | ||
| Low Range Of Spread On Written Credit Derivatives | 0.15% | 0.25% |
| High Range Of Spread On Written Credit Derivatives | 5.00% | 5.00% |
| Credit Default Swap, Selling Protection [Member] | ||
| Derivative [Line Items] | ||
| Total net up-front payments received | $ 28.9 | $ 2.5 |