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Investments in Unconsolidated Real Estate Joint Ventures (Unconsolidated Real Estate Joint Ventures) (Details) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2013
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Dec. 31, 2012
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Sep. 30, 2013
Partnership Interest [Member]
|
Dec. 31, 2012
Partnership Interest [Member]
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Sep. 30, 2013
Charlotte [Member]
sqft
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May 30, 2013
Charlotte [Member]
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Dec. 31, 2012
Deer Park [Member]
sqft
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Dec. 31, 2012
Deer Park Warehouse [Member]
sqft
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Sep. 30, 2013
Galveston/Houston [Member]
sqft
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Dec. 31, 2012
Galveston/Houston [Member]
sqft
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Sep. 30, 2013
National Harbor [Member]
sqft
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Dec. 31, 2012
National Harbor [Member]
sqft
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Sep. 30, 2013
RioCan Canda [Member]
sqft
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Dec. 31, 2012
RioCan Canda [Member]
sqft
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Sep. 30, 2013
Westgate [Member]
sqft
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Dec. 31, 2012
Westgate [Member]
sqft
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Sep. 30, 2013
Wisconsin Dells [Member]
sqft
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Dec. 31, 2012
Wisconsin Dells [Member]
sqft
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Sep. 30, 2013
Other [Member]
sqft
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Dec. 31, 2012
Other [Member]
sqft
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Schedule of Equity Method Investments [Line Items] | ||||||||||||||||||||
| Ownership % | 50.00% | 50.00% | 33.30% | 33.30% | 50.00% | 50.00% | 50.00% | 50.00% | 50.00% | 50.00% | 58.00% | 58.00% | 50.00% | 50.00% | ||||||
| Square Feet | 0 | 741,981 | 29,253 | 347,930 | 352,705 | 0 | 0 | 434,162 | 434,562 | 331,739 | 332,234 | 265,086 | 265,086 | 0 | 0 | |||||
| Carrying Value of Investment (in millions) | $ 136.9 | $ 126.6 | $ 136.9 | $ 126.6 | $ 5.9 | $ 3.0 | $ 0 | $ 7.7 | $ 36.7 | $ 17.5 | $ 2.6 | $ 86.7 | $ 62.2 | $ 16.4 | $ 19.1 | $ 2.5 | $ 2.8 | $ 0.2 | $ 0.2 | |
| Total Joint Venture Debt (in millions) | $ 179.2 | $ 325.2 | $ 0 | $ 246.9 | $ 1.9 | $ 65.0 | $ 0 | $ 28.1 | $ 0 | $ 18.8 | $ 20.1 | $ 43.0 | $ 32.0 | $ 24.3 | $ 24.3 | $ 0 | $ 0 |