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Summary of Significant Accounting Policies - Useful Lives for Major Categories of Property and Equipment (Detail) | 12 Months Ended
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Dec. 31, 2013
Land Improvements | Lower end |
Property and Equipment [Line Items] |
Property and equipment, useful life | 50 years
Land Improvements | Upper end |
Property and Equipment [Line Items] |
Property and equipment, useful life | 50 years
Buildings | Lower end |
Property and Equipment [Line Items] |
Property and equipment, useful life | 28 years
Buildings | Upper end |
Property and Equipment [Line Items] |
Property and equipment, useful life | 40 years
Furniture Fixtures Equipment and Purchased Software | Lower end |
Property and Equipment [Line Items] |
Property and equipment, useful life | 3 years
Furniture Fixtures Equipment and Purchased Software | Upper end |
Property and Equipment [Line Items] |
Property and equipment, useful life | 5 years

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- Details
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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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Period Type: | duration