|
Investments in Unconsolidated Real Estate Joint Ventures Unconsolidated Real Estate Joint Ventures (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2012
Houston [Member]
sqft
|
Nov. 02, 2012
Houston [Member]
sqft
|
Dec. 31, 2011
Houston [Member]
sqft
|
Dec. 31, 2012
Deer Park Warehouse [Member]
sqft
|
Dec. 31, 2011
Deer Park Warehouse [Member]
sqft
|
Dec. 31, 2012
Deer Park [Member]
sqft
|
Dec. 31, 2011
Deer Park [Member]
sqft
|
Oct. 31, 2003
Deer Park [Member]
|
Dec. 31, 2012
Wisconsin Dells [Member]
sqft
|
Dec. 31, 2011
Wisconsin Dells [Member]
sqft
|
Dec. 31, 2012
National Harbor [Member]
sqft
|
Dec. 31, 2011
National Harbor [Member]
sqft
|
Dec. 31, 2012
RioCan Canda [Member]
sqft
|
Dec. 31, 2011
RioCan Canda [Member]
sqft
|
Dec. 31, 2012
Westgate [Member]
sqft
|
Nov. 02, 2012
Westgate [Member]
sqft
|
Dec. 31, 2012
Other [Member]
sqft
|
Dec. 31, 2011
Other [Member]
sqft
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Schedule of Equity Method Investments [Line Items] | ||||||||||||||||||||
| Equity Method Investment, Ownership Percentage | 50.00% | 50.00% | 33.30% | 33.30% | 33.30% | 33.30% | 33.30% | 50.00% | 50.00% | 50.00% | 50.00% | 50.00% | 50.00% | 58.00% | ||||||
| Area of Real Estate Property | 352,705 | 353,000 | 0 | 29,253 | 29,253 | 741,981 | 656,788 | 265,086 | 265,086 | 0 | 0 | 434,562 | 159,391 | 332,234 | 332,000 | 0 | 0 | |||
| Equity Method Investments | $ 126.6 | $ 28.5 | $ 36.7 | $ 7.9 | $ 0 | $ 0 | $ 3.0 | $ 5.4 | $ 2.8 | $ 4.0 | $ 2.6 | $ 0.9 | $ 62.2 | $ 10.0 | $ 19.1 | $ 0.2 | $ 0.3 | |||
| Joint Venture Debt | $ 325.2 | $ 303.2 | $ 0 | $ 0 | $ 1.9 | $ 2.3 | $ 246.9 | $ 246.9 | $ 24.3 | $ 24.3 | $ 0 | $ 0 | $ 20.1 | $ 29.7 | $ 32.0 | $ 0 | $ 0 |