|
Derivative Instruments and Hedging Activities (Subsequent Events) (Details) (Crude Oil [Member], Commodity Contract [Member], Subsequent Event [Member])
|
Jun. 30, 2013
|
|---|---|
|
Derivative, Swap Type, Average Fixed Price, September 2013 To December 2013 [Member]
|
|
| Derivative [Line Items] | |
| Average Notional Volumes per Month | 18,000 |
| Fixed-Price Swap | 102.08 |
|
Derivative, Swap Type, Average Fixed Price, January 2014 to December 2014 [Member]
|
|
| Derivative [Line Items] | |
| Average Notional Volumes per Month | 9,000 |
| Fixed-Price Swap | 94.58 |
| X | ||||||||||
|
- Definition
Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Average fixed price related to the group of price risk swap derivatives. No definition available.
|