|
Derivative Financial Instruments (Schedule Of Open Interest Rate Swap Derivative Positions) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
|---|---|
|
Dec. 31, 2011
|
|
| Derivative [Line Items] | |
| Notional | $ 850 |
| Average Fixed Rate Received | 3.65% |
|
August 2012 [Member]
|
|
| Derivative [Line Items] | |
| Notional | 100 |
| Variable Rate Paid | Federal funds rate |
| Fixed Rate Received | 1.90% |
| Expiration | August 2012 |
|
July 2013 [Member]
|
|
| Derivative [Line Items] | |
| Notional | $ 750 |
| Variable Rate Paid | Federal funds rate |
| Fixed Rate Received | 3.88% |
| Expiration | July 2013 |