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Summary of Significant Accounting Policies - Revenue Recognition (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2012
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Dec. 31, 2011
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| Accounting Policies [Abstract] | ||
| Straight Line Rent Adjustments | $ 25.1 | $ 20.8 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of the adjustment to rental revenues to measure escalating leasing revenues on a straight line basis. No definition available.
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