|
Derivative Instruments and Hedging Activities Credit Risk - Counterparty Exposure (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
|
|---|---|
| Credit Derivatives [Line Items] | |
| Collateral Securities Repledged, Delivered, or Used | $ (47.0) |
| Collateral Already Posted, Aggregate Fair Value | $ 62.9 |
| X | ||||||||||
|
- Definition
The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The carrying value as of the balance sheet date of securities received as collateral from a counterparty that were re-pledged, sold, delivered or otherwise reused by the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|