v3.3.0.814

Derivative Instruments - Put and Call Option Contracts (Phantom) (Detail)	9 Months Ended
	Sep. 30, 2015	[1]
Minimum [Member] | Unleaded Fuel [Member]
Derivative [Line Items]
Derivative settlement date	2015-10
Minimum [Member] | Diesel [Member]
Derivative [Line Items]
Derivative settlement date	2015-10
Maximum [Member] | Unleaded Fuel [Member]
Derivative [Line Items]
Derivative settlement date	2016-03
Maximum [Member] | Diesel [Member]
Derivative [Line Items]
Derivative settlement date	2016-03
[1] The settlement of the put and call option contracts is based upon the New York Mercantile Exchange’s New York Harbor Reformulated Gasoline Blendstock for Oxygenate Blending and the U.S. Department of Energy’s weekly retail on-highway diesel fuel price for the month.

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- Definition

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- Definition

Derivative Settlement Month And Year

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