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Real Estate and Accumulated Depreciation - Estimated Useful Lives of Assets (Detail) | 12 Months Ended
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Dec. 31, 2013
Building | Minimum |
Property Plant and Equipment Estimated Useful Lives [Line Items] |
Property plant equipment useful life | 35 years
Building | Maximum |
Property Plant and Equipment Estimated Useful Lives [Line Items] |
Property plant equipment useful life | 50 years
Building Components | Maximum |
Property Plant and Equipment Estimated Useful Lives [Line Items] |
Property plant equipment useful life | 20 years
Tenant Improvements |
Property Plant and Equipment Estimated Useful Lives [Line Items] |
Tenant improvements | The shorter of the term of the lease or the useful life of the improvements

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 + 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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