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Commitments and Contingencies - Affiliate Pension Obligations (Details) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 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 | $ | $ 435 | $ 424
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 in CVR Energy by Mr. Icahn's affiliates. + References No definition available. + Details
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- Definition Number of Sponsors of Pension Plans + References No definition available. + Details
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