|
Derivatives and Hedging Activities (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended |
|---|---|
|
Mar. 31, 2015
|
|
| Derivative [Line Items] | |
| Additional collateral | $ 94 |
| Credit Rating Did Not Meet Specified Threshold [Member] | |
| Derivative [Line Items] | |
| Cash collateral posted | 4 |
| Interest Expense [Member] | |
| Derivative [Line Items] | |
| Cash flow hedge loss to be reclassified to earnings within twelve months | $ 40 |
| Securitized Debt [Member] | |
| Derivative [Line Items] | |
| Initial maximum period for cash flow hedges (in years) | 5 years |
| Deposits [Member] | |
| Derivative [Line Items] | |
| Initial maximum period for cash flow hedges (in years) | 7 years |