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Commitments and Contingencies (Details 2) (USD $) | 12 Months Ended | 1 Months Ended |  | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended |
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Aug. 31, 2010 City CRNF | Aug. 31, 2008 City CRNF | Aug. 31, 2010 City Lawsuit under long-term purchase agreement CRNF | Dec. 15, 2011 Throughput and deficiency agreement assumed Wynnewood Acquisition | Dec. 31, 2011 Material Plains Pipeline CRRM year barrelperday | Dec. 31, 2010 Material Plains Pipeline CRRM | Dec. 31, 2009 Material Plains Pipeline CRRM | Dec. 31, 2011 Material MAPL CRRM | Dec. 31, 2010 Material MAPL CRRM | Dec. 31, 2009 Material MAPL CRRM | Dec. 31, 2005 Material MAPL CRRM barrelperyear | Dec. 31, 2011 Material CCPS CRRM | Dec. 31, 2010 Material CCPS CRRM | Dec. 31, 2009 Material CCPS CRRM | Dec. 31, 2004 Material CCPS CRRM barrelperday | Dec. 31, 2011 Material Plains CRRM | Dec. 31, 2010 Material Plains CRRM | Dec. 31, 2009 Material Plains CRRM | Dec. 31, 2007 Material Plains CRRM barrelperyear year | Dec. 31, 2011 Material Linde, Inc. CRNF | Dec. 31, 2010 Material Linde, Inc. CRNF | Dec. 31, 2009 Material Linde, Inc. CRNF | Dec. 31, 2005 Material Linde, Inc. CRNF | Dec. 31, 2011 Material Enterprise CRRM year | Dec. 31, 2010 Material Enterprise CRRM | Dec. 31, 2009 Material Enterprise CRRM | Oct. 31, 2008 Material Magellan barrelperday year | Dec. 31, 2011 Material Magellan | Dec. 31, 2010 Material Magellan | Dec. 31, 2009 Material Magellan | May 31, 2009 Equipment and Materials Cominco Fertilizer Partnership CRNF | Nov. 30, 2007 Equipment and Materials Cominco Fertilizer Partnership CRNF | Dec. 31, 2011 Equipment and Materials Cominco Fertilizer Partnership CRNF
Long-term commitments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receipt of refunds |  |  |  |  |  | $ 4,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum committed contractual payment |  |  |  | 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  |  |  |  |  | 4,300,000 | 3,500,000 |
Estimated remaining obligation |  |  |  |  | 14,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum barrels of crude oil to be transported per day |  |  |  |  |  |  |  | 80,000 |  |  |  |  |  | 2,000,000 |  |  |  | 10,000 |  |  |  | 29,200,000 |  |  |  |  |  |  |  | 20,000 |  |  |  |  |  |
Term of agreement (in years) |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  | 10 |  |  |  |  |  |
Term of agreement over which a quantity of materials must be purchased to meet the capacity of the supplier (in years) |  |  |  |  |  |  |  | 15 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses related to agreement |  |  |  |  |  |  |  | 9,800,000 | 11,400,000 | 11,000,000 | 1,300,000 | 2,400,000 | 2,400,000 |  | 8,400,000 | 16,600,000 | 9,700,000 |  | 2,400,000 | 2,500,000 | 2,600,000 |  | 4,200,000 | 4,700,000 | 4,100,000 |  | 1,800,000 | 1,300,000 | 1,300,000 |  | 700,000 | 600,000 | 60,000 |  |  |
Annual automatic extension period of agreement (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period after which agreement is subject to annual automatic extensions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years 1 day |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses related to separate Terminalling Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,300,000 | 3,100,000 | 3,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount paid under agreement | 91,224,000 | 32,409,000 | 48,773,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,300,000 |  |
Amount accrued for dismantling and removal of unit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,900,000
Amount accrued related to nitric acid plant and dismantling obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,900,000
Estimated annual expenses associated with agreement |  |  |  |  |  |  | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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