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Summary of Significant Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Cost Classifications |  |  |
Depreciation and amortization not included in cost of product sold | $ 5.0 | $ 3.7 | $ 2.5
Depreciation and amortization not included in direct operating expenses | 134.5 | 124.1 | 86.0
Depreciation and amortization not included in selling, general and administrative expenses | 3.3 | 2.2 | 1.8
Revenue Recognition |  |  |
Expected period of delivery of deferred revenue | 12 months |  |
Nitrogen fertilizer plant |  |  |
Planned Major Maintenance Costs |  |  |
Turnaround costs |  | 4.8 |
Nitrogen fertilizer plant | Minimum |  |  |
Planned Major Maintenance Costs |  |  |
Frequency of planned major maintenance activities | 2 years |  |
Nitrogen fertilizer plant | Maximum |  |  |
Planned Major Maintenance Costs |  |  |
Frequency of planned major maintenance activities | 3 years |  |
Petroleum refineries | Minimum |  |  |
Planned Major Maintenance Costs |  |  |
Frequency of planned major maintenance activities | 4 years |  |
Petroleum refineries | Maximum |  |  |
Planned Major Maintenance Costs |  |  |
Frequency of planned major maintenance activities | 5 years |  |
Coffeyville refinery |  |  |
Planned Major Maintenance Costs |  |  |
Number of phases | 2 |  |
Turnaround costs |  | 21.2 | 66.4
Wynnewood refinery |  |  |
Planned Major Maintenance Costs |  |  |
Turnaround costs |  | $ 102.5 |

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