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Commitments and Contingencies - Affiliate Pension Obligations (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) sponsor	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Minimum ownership interest in CVR Energy by Mr. Icahn's affiliates	80.00%
Number of sponsors of pension plans | sponsor	2
Affiliate Pension Obligations
Loss Contingencies [Line Items]
Underfunded pension obligation, if ACF and Federal-Mogul plans were voluntarily terminated | $	$ 417.1	$ 423.7
Majority Shareholder
Loss Contingencies [Line Items]
Ownership percentage held by controlling stockholder	82.00%

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- Definition

Represents the percentage of ownership interest held by the majority shareholder

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- Definition

Represents the percentage of ownership interest in CVR Energy by Mr. Icahn's affiliates.

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- Definition

Number of Sponsors of Pension Plans

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- Definition

Represents the underfunded pension obligation of affiliates for which the Company is joint and severally liable.

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- 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.

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