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Commitments and Contingencies Energy Narrative (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 3 Months Ended | 12 Months Ended |  |  |  |
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Mar. 31, 2014 Energy Segment [Member] | Mar. 31, 2013 Energy Segment [Member] | Dec. 31, 2013 Energy Segment [Member] | Mar. 31, 2014 CRRM [Member] Energy Segment [Member] | Mar. 31, 2013 CRRM [Member] Energy Segment [Member] | Mar. 31, 2014 CVR Energy, Inc. [Member] Energy Segment [Member] | Mar. 31, 2013 CVR Energy, Inc. [Member] Energy Segment [Member] | Dec. 31, 2008 CRNF [Member] Energy Segment [Member] | Mar. 31, 2014 PSC Metals [Member] Metals Segment [Member] | Dec. 31, 2013 PSC Metals [Member] Metals Segment [Member] | Mar. 31, 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] |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense |  |  |  |  |  | $ 2 | $ 2 |  |  |  |  |
Average increase in annual property tax expense |  |  |  |  |  |  |  | 11 |  |  |  |
Accrued environmental liabilities | 1 |  | 1 |  |  |  |  |  | 28 | 29 |  |
Environmental Remediation Expense |  |  |  | 34 | 22 |  |  |  |  |  |  |
Cost of RINs | 35 | 32 |  |  |  |  |  |  |  |  |  |
Biofuel blending obligation |  |  |  |  |  |  |  |  |  |  | $ 40 | $ 17

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- Definition Biofuel blending obligation + References No definition available. + Details
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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