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Commitments and Contingencies Energy Narrative (Details) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |
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Jul. 29, 2014 Energy Segment [Member] | Sep. 30, 2014 Energy Segment [Member] | Sep. 30, 2013 Energy Segment [Member] | Sep. 30, 2014 Energy Segment [Member] | Sep. 30, 2013 Energy Segment [Member] | Dec. 31, 2013 Energy Segment [Member] | Sep. 30, 2014 CRRM [Member] Energy Segment [Member] | Sep. 30, 2013 CRRM [Member] Energy Segment [Member] | Sep. 30, 2014 CRRM [Member] Energy Segment [Member] | Sep. 30, 2013 CRRM [Member] Energy Segment [Member] | Sep. 30, 2013 CVR Energy, Inc. [Member] Energy Segment [Member] | Sep. 30, 2013 CVR Energy, Inc. [Member] Energy Segment [Member] | Dec. 31, 2008 CRNF [Member] Energy Segment [Member] | Sep. 30, 2014 PSC Metals [Member] Metals Segment [Member] | Dec. 31, 2013 PSC Metals [Member] Metals Segment [Member] | Sep. 30, 2014 Accrued expenses and other liabilities [Member] Energy Segment [Member] | Dec. 31, 2013 Accrued expenses and other liabilities [Member] Energy Segment [Member]
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecorded Unconditional Purchase Obligation |  | $ 1,400 |  | $ 1,400 |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecorded Unconditional Purchase Obligations due over multiple years |  | 930 |  | 930 |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense |  |  |  |  |  |  |  |  |  |  | 2 | 7 |  |  |  |  |
Average increase in annual property tax expense |  |  |  |  |  |  |  |  |  |  |  |  | 11 |  |  |  |
Accrued environmental liabilities |  | 1 |  | 1 |  | 2 |  |  |  |  |  |  |  | 28 | 29 |  |
Environmental Remediation Expense |  |  |  |  |  |  | 23 | 36 | 83 | 74 |  |  |  |  |  |  |
Cost of RINs |  | 19 | 57 | 82 | 155 |  |  |  |  |  |  |  |  |  |  |  |
Biofuel blending obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36 | 17
Accident repair cost |  | 6 |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |
Property damage insurance deductible | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance Settlements Receivable |  | 1 |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Workers compensation accident deductible | 0.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Planned major maintenance |  | $ 6 |  | $ 6 |  |  |  |  |  |  |  |  |  |  |  |  |

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