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Commitments and Contingencies - Environmental, Health and Safety Matters (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 01, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Loss Contingencies [Line Items]
Environmental costs recognized capitalized in the period		$ 6,500	$ 8,500	$ 12,500	$ 26,700
EHS
Loss Contingencies [Line Items]
Environmental accruals		5,300		5,300		$ 3,600
EHS | CRRM
Loss Contingencies [Line Items]
Cost of renewable identification numbers		58,300	$ 19,300	152,400	$ 93,400
Biofuel blending obligation recorded in other current liabilities		$ 126,600		$ 126,600		$ 9,500
EHS | CRCT
Loss Contingencies [Line Items]
Preliminary assessed civil penalty	$ 500
Payments of civil penalty	$ 160

X

- Definition

Carrying value as of the balance sheet date of obligations pertains to Biofuels blending. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Represents the expense incurred for the purchase of Renewable Identification Numbers.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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Amount of environmental remediation costs capitalized. These expenditures may relate to long-lived improvements in operating facilities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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