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Summary of Significant Accounting Policies (Details 2) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 month component
Property, Plant, and Equipment |
Minimum project cost required for capitalization of interest | $ 1.0
Minimum period required for completion of project for capitalization of interest (in months) | 6
Goodwill and Intangible Assets |
Number of components contained in each operating segment | 1
Improvements to land |
Property, Plant, and Equipment |
Useful life, low end of range (in years) | 15
Useful life, high end of range (in years) | 30
Buildings |
Property, Plant, and Equipment |
Useful life, low end of range (in years) | 20
Useful life, high end of range (in years) | 30
Machinery and equipment |
Property, Plant, and Equipment |
Useful life, low end of range (in years) | 5
Useful life, high end of range (in years) | 30
Automotive equipment |
Property, Plant, and Equipment |
Useful life, low end of range (in years) | 5
Useful life, high end of range (in years) | 15
Furniture and fixtures |
Property, Plant, and Equipment |
Useful life, low end of range (in years) | 3
Useful life, high end of range (in years) | 10
Railcars |
Property, Plant, and Equipment |
Useful life, low end of range (in years) | 25
Useful life, high end of range (in years) | 40

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- Definition Represents the minimum period required for completion of project for capitalization of interest to project cost. + References No definition available. + Details
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- Definition Represents the minimum amount of project cost required for capitalization of interest to project cost. + References No definition available. + Details
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- Definition Represents the number of components contained in each operating segment of the reporting entity. + References No definition available. + Details
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- Definition The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
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- Definition The minimum useful life of long lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
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