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Commitments and Contingencies Energy Narrative (Details) (Energy Segment [Member], USD $) | 3 Months Ended | 12 Months Ended | 3 Months Ended | 1 Months Ended | 9 Months Ended | 12 Months Ended | 1 Months Ended | 9 Months Ended | 3 Months Ended | 1 Months Ended | 0 Months Ended | 3 Months Ended |  | 3 Months Ended |  | 0 Months Ended
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Mar. 31, 2013 | Mar. 31, 2013 CVR Energy, Inc. [Member] | Mar. 31, 2013 CRRM [Member] | Dec. 31, 2011 CRNF [Member] | Dec. 31, 2010 CRNF [Member] | Dec. 31, 2009 CRNF [Member] | Dec. 31, 2008 CRNF [Member] | Mar. 31, 2013 WRC [Member] | May 31, 2010 Crude Oil, Indirect Supplier [Member] OKLAHOMA and KANSAS [Member] CRRM [Member] Pending Litigation [Member] litigation_cases | Jun. 30, 2010 Crude Oil Discharge [Member] Kansas CVR Energy, Inc. [Member] Pending Litigation [Member] plaintiffs | Dec. 31, 2012 Crude Oil Discharge [Member] Kansas CVR Energy, Inc. [Member] Pending Litigation [Member] | May 31, 2008 Crude Oil Discharge [Member] Kansas CVR Energy, Inc. [Member] Settled [Member] plaintiffs | Jun. 30, 2010 Crude Oil Discharge [Member] Kansas CVR Energy, Inc. [Member] Pending Litigation and Settled, Aggregate [Member] plaintiffs | Mar. 31, 2013 EPA, Second Consent Decree, Clean Air Act [Member] CRRM [Member] | Aug. 31, 2011 ODEQ [Member] WRC [Member] | Oct. 25, 2010 U.S. Coast Guard / EPA [Member] Crude Oil Discharge [Member] Kansas CVR Energy, Inc. [Member] Pending Litigation [Member] | Mar. 31, 2013 Air Emissions Reduction and Water Conservation [Member] EPA, Second Consent Decree, Clean Air Act [Member] CRRM [Member] | Mar. 31, 2013 Coffeyville, Kansas Refinery and Phillipsburg, Kansas Terminal Facility [Member] Kansas CRRM and CRT [Member] | Mar. 31, 2013 Professional Fees [Member] CVR Energy, Inc. [Member] | Mar. 31, 2013 Profession fees, case 2 [Member] CVR Energy, Inc. [Member] | Mar. 31, 2013 Wynnewood Consent Order [Member] | Feb. 13, 2013 Civil penalty [Member] | Feb. 13, 2013 Oversight cost reimbursement [Member]
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense |  | $ 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lawsuits Filed Against Company |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average increase in annual property tax expense |  |  |  | 11,000,000 | 12,000,000 | 11,000,000 | 11,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Related to Litigation Settlement |  |  |  |  |  | 11,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of claimants / plaintiffs |  |  |  |  |  |  |  |  |  | 1 |  | 16 | 3 |  |  |  |  |  |  |  |  |  |
Compensatory damages sought |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 | 3,000,000 |  |  | 2,000,000 |  |  | 18,500,000 | 18,500,000 |  |  |
Subsequent Event, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 | 1,700,000
Insurance proceeds under primary environmental liability insurance policy |  |  |  |  |  |  |  |  |  |  | 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Accrued environmental liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |
Estimated closure and post-closure costs included in accred environmental liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |
Capital expenditures to comply with environmental rules | 20,000,000 |  | 59,000,000 |  |  |  |  | 94,000,000 |  |  |  |  |  | 41,000,000 |  |  | 1,000,000 |  |  |  |  |  |
U.S. refineries entered into environmental regulatory concent decree, minimum percentage of U.S. refining capacity |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Civil penalty, anticipated maximum |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |
Capital expenditures to comply with environmental rules, expected to be capital expenditures |  |  |  |  |  |  |  |  |  |  |  |  |  | 39,000,000 |  |  |  |  |  |  |  |  |
Civil penalty paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 950,000 |  |  |  |  |  |  |  |
Environmental expenditures capitalized | 22,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |

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