|
Derivative Instruments (Gross Notional Amount and Fair Value of Derivatives Contracts) (Parenthetical) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Derivative Instruments | ||
| Net Embedded Derivative | $ 348 | $ (1,441) |