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Derivative Financial Instruments - Fair Value of Commodity Derivatives (Details) - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
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CVR Refining, LP | Commodity Derivatives |  |
Derivatives, Fair Value [Line Items] |  |
Net unrealized gain (loss) on outstanding commodity derivative contracts | $ (26) | $ (64)

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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 + Details
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