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Derivative Financial Instruments and Fair Value Measurements - Additional Information (Details)	Sep. 30, 2019 derivative
Commodity Swap
Derivative [Line Items]
Outstanding positions	0
Forward Contracts | Purchase Commitments
Derivative [Line Items]
Outstanding positions	5,000,000
Forward Contracts | Sale Commitments
Derivative [Line Items]
Outstanding positions	1,000,000
Forward Contracts, RINs
Derivative [Line Items]
Outstanding positions	38,000,000

X

- Definition

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.

+ References

No definition available.

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

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