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Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Details) | 3 Months Ended
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Mar. 31, 2015
Minimum | Land improvements |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 4 years
Minimum | Buildings and building improvements |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 3 years
Minimum | Furniture and fixtures |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 1 year
Minimum | Equipment |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 1 year
Minimum | Computer hardware and software |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 1 year
Maximum | Land improvements |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 15 years
Maximum | Buildings and building improvements |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 23 years
Maximum | Furniture and fixtures |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 7 years
Maximum | Equipment |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 10 years
Maximum | Computer hardware and software |
Property, Plant and Equipment [Line Items] |
Property plant and equipment, useful life | 7 years

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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