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Summary of Significant Accounting Policies (Details)
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12 Months Ended |
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Dec. 31, 2011
Month
Y
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| Properties | |
| Period after the cessation of major construction activities for considering property as operational if leases have not commenced earlier (in years) | 1 |
| Period after the cessation of major construction activities for considering property as partially operational if leases have commenced earlier (in years) | 1 |
| Cash and Cash Equivalents | |
| Maximum term until original maturity to classify cash and liquid investments as cash and cash equivalents (in months) | 3 |
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Buildings and building improvements
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| Properties | |
| Estimated useful life, minimum (in years) | 10 |
| Estimated useful life, maximum (in years) | 40 |
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Land improvements
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| Properties | |
| Estimated useful life, minimum (in years) | 10 |
| Estimated useful life, maximum (in years) | 20 |
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Equipment and personal property
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| Properties | |
| Estimated useful life, minimum (in years) | 3 |
| Estimated useful life, maximum (in years) | 10 |
| X | ||||||||||
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- Definition
Represents the maximum term until original maturity to classify cash and liquid investments as cash and cash equivalents. No definition available.
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| X | ||||||||||
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- Definition
Represents the period after the cessation of major construction activities for considering property as operational if leases have not commenced earlier. No definition available.
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| X | ||||||||||
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- Definition
Represents the period after the cessation of major construction activities for considering property as partially operational if leases have commenced earlier. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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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. No definition available.
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| X | ||||||||||
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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. No definition available.
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