Investments in Unconsolidated Real Estate Joint Ventures (Unconsolidated Real Estate Joint Ventures) (Details) ft² in Thousands, $ in Millions |
Mar. 31, 2016
USD ($)
ft²
|
Dec. 31, 2015
USD ($)
ft²
|
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Schedule of Equity Method Investments [Line Items] | |||||||||
Total Joint Venture Debt (in millions) | [1] | $ 253.2 | $ 246.6 | ||||||
Partnership Interest [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Carrying Value of Investment (in millions) | $ 218.7 | $ 201.1 | |||||||
Columbus [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | 50.00% | 50.00% | |||||||
Square Feet | ft² | 0 | 0 | |||||||
Carrying Value of Investment (in millions) | $ 30.7 | $ 21.1 | |||||||
Total Joint Venture Debt (in millions) | [1] | $ 0.0 | $ 0.0 | ||||||
National Harbor [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | 50.00% | 50.00% | |||||||
Square Feet | ft² | 339 | 339 | |||||||
Carrying Value of Investment (in millions) | $ 5.5 | $ 6.1 | |||||||
Total Joint Venture Debt (in millions) | [1] | $ 85.9 | $ 85.8 | ||||||
RioCan Canda [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | 50.00% | 50.00% | |||||||
Square Feet | ft² | 902 | 870 | |||||||
Carrying Value of Investment (in millions) | $ 126.4 | $ 117.2 | |||||||
Total Joint Venture Debt (in millions) | [1] | $ 11.9 | $ 11.3 | ||||||
Savannah [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | [2] | 50.00% | 50.00% | ||||||
Square Feet | ft² | [2] | 377 | 377 | ||||||
Carrying Value of Investment (in millions) | [2] | $ 43.8 | $ 44.4 | ||||||
Total Joint Venture Debt (in millions) | [1],[2] | $ 93.5 | $ 87.6 | ||||||
Westgate [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | 58.00% | 58.00% | |||||||
Square Feet | ft² | 411 | 411 | |||||||
Carrying Value of Investment (in millions) | $ 12.3 | $ 12.3 | |||||||
Total Joint Venture Debt (in millions) | [1] | $ 61.9 | $ 61.9 | ||||||
Charlotte [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | [3] | 50.00% | 50.00% | ||||||
Square Feet | ft² | [3] | 398 | 398 | ||||||
Equity Method Investment Reported In Liabilities | [3] | $ (1.4) | $ (1.1) | ||||||
Total Joint Venture Debt (in millions) | [1],[3] | $ 89.6 | $ 89.6 | ||||||
Galveston/Houston [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Ownership % | [3] | 50.00% | 50.00% | ||||||
Square Feet | ft² | [3] | 353 | 353 | ||||||
Equity Method Investment Reported In Liabilities | [3] | $ (2.1) | $ (1.5) | ||||||
Total Joint Venture Debt (in millions) | [1],[3] | 64.8 | 64.7 | ||||||
Charlotte and Galveston/Houston [Member] | |||||||||
Schedule of Equity Method Investments [Line Items] | |||||||||
Equity Method Investment Reported In Liabilities | (3.5) | (2.6) | |||||||
Total Joint Venture Debt (in millions) | [1] | $ 154.4 | $ 154.3 | ||||||
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