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Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Related Party Transaction [Line Items]
Distributions made	$ 75	$ 44	$ 43	$ 162	$ 130
Minimum ownership interest in CVR Energy for eligibility to file as member of AEPC consolidated federal income tax group				80.00%
Majority Shareholder
Related Party Transaction [Line Items]
Distributions made	$ 53	$ 36	$ 36	$ 125
CVR Refining | Majority Shareholder
Related Party Transaction [Line Items]
Distributions made				$ 10
AEPC | Majority Shareholder
Related Party Transaction [Line Items]
Minimum ownership interest in CVR Energy for eligibility to file as member of AEPC consolidated federal income tax group				80.00%

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- Definition

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+ References

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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- Definition

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