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Summary of Significant Accounting Policies (Details) | 12 Months Ended
--- | ---
Dec. 31, 2012
Basis of Presentation |
Ownership interest in subsidiaries (as a percent) | 100.00%
Cash and Cash Equivalents and Other |
Maximum original maturity period of highly liquid debt instruments to be considered as cash equivalents | 3 months
Buildings and improvements |
Real Estate Properties |
Estimated useful lives | 40 years
Buildings and improvements | Maximum |
Real Estate Properties |
Estimated useful lives | 40 years
Personal property | Maximum |
Real Estate Properties |
Estimated useful lives | 12 years

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- Definition Represents the maximum original maturity period of highly liquid debt instruments to be considered as cash equivalents. + References No definition available. + Details
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- Definition Represents the percentage of ownership held in the subsidiary either directly or indirectly. + References No definition available. + 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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