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Put and Call Option Contracts (Detail)
|
9 Months Ended | |||
|---|---|---|---|---|
|
Sep. 30, 2013
gal
|
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| Derivative [Line Items] | ||||
| Total fuel price derivative instruments, gallons | 54,355,000 | [1] | ||
|
Unleaded Fuel
|
||||
| Derivative [Line Items] | ||||
| Total fuel price derivative instruments, gallons | 36,953,000 | [1] | ||
|
Diesel
|
||||
| Derivative [Line Items] | ||||
| Total fuel price derivative instruments, gallons | 17,402,000 | [1] | ||
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