Unsecured Revolving Credit Facility (Tables) |
9 Months Ended | ||||||||||||||||||||||||
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Sep. 30, 2011 | |||||||||||||||||||||||||
| Unsecured Revolving Credit Facility [Abstract] | |||||||||||||||||||||||||
| Change In The Operating Partnership's Unsecured Debt Ratings |
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- Definition Schedule of Unsecured Credit Rating, Operating Partnerships [Table Text Block]
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| X | ||||||||||
- Definition Unsecured Revolving Credit Facility [Abstract]
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