Derivative Instruments (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended |
---|---|
Sep. 30, 2013
|
|
Foreign Currency Derivatives [Member]
|
|
Derivative [Line Items] | |
Notional amounts of foreign currency derivatives | $ 237.1 |
Refined Oil Products [Member] | Commodity Derivative Contracts [Member]
|
|
Derivative [Line Items] | |
Outstanding derivative swap contracts | $ 29.8 |
Minimum [Member] | Foreign Currency Derivatives [Member]
|
|
Derivative [Line Items] | |
Derivative maturities | October 2013 |
Minimum [Member] | Commodity Derivative Contracts [Member]
|
|
Derivative [Line Items] | |
Derivative maturities | October 2013 |
Maximum [Member] | Foreign Currency Derivatives [Member]
|
|
Derivative [Line Items] | |
Derivative maturities | June 2014 |
Maximum [Member] | Commodity Derivative Contracts [Member]
|
|
Derivative [Line Items] | |
Derivative maturities | March 2014 |