Quarterly report pursuant to Section 13 or 15(d)

Investments in Unconsolidated Real Estate Joint Ventures (Narrative) (Details)

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Investments in Unconsolidated Real Estate Joint Ventures (Narrative) (Details) (USD $)
9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2014
Charlotte [Member]
sqft
store
Dec. 31, 2013
Charlotte [Member]
May 30, 2013
Charlotte [Member]
Sep. 30, 2014
RioCan Canda [Member]
Dec. 31, 2013
RioCan Canda [Member]
Mar. 31, 2013
Cookstown [Member]
Sep. 30, 2014
Cookstown [Member]
store
sqft
Jun. 30, 2013
Ottawa [Member]
store
sqft
Sep. 30, 2014
Ottawa [Member]
Sep. 30, 2014
Savannah [Member]
sqft
Sep. 30, 2014
Westgate [Member]
Jun. 30, 2014
Westgate [Member]
sqft
May 31, 2014
Westgate [Member]
Mar. 31, 2014
Westgate [Member]
Dec. 31, 2013
Westgate [Member]
May 31, 2014
Mortgages [Member]
Savannah [Member]
Extension
Schedule of Equity Method Investments [Line Items]                                    
Equity method investments $ 249,700,000 $ 140,200,000 $ 38,800,000 $ 11,600,000   $ 119,800,000 $ 85,700,000         $ 46,100,000 [1] $ 14,800,000       $ 16,100,000  
Differences in basis 4,000,000 1,600,000                                
Ownership %     50.00% 50.00% 50.00% 50.00% 50.00%         50.00% [1] 58.00%       58.00%  
Estimated square footage of real estate property when completed     400,000                 377,000            
Company portion of contributed capital to the joint venture     38,000,000               51,300,000 45,400,000            
Number of outlet stores     90           35 80                
Payments to acquire real estate               13,900,000   28,700,000                
Estimated square feet of expansion                 153,000 316,000       78,000        
Partner's Portion of Contributed Capital to the Joint Venture                       7,400,000            
Joint venture initial required equity contribution, company portion                       7,400,000            
Preferred return percentage prior to grand opening date                       8.00%            
Preferred return percentage after grand opening date                       10.00%            
Principal                                   97,700,000
Basis spread on variable rate                                   1.65%
Number of mortgage extensions                                   2
Term of mortgage extension                                   1 year
Total Joint Venture Debt (in millions) 221,100,000 202,700,000 0 0   16,600,000 17,900,000         3,400,000 [1] 49,800,000       43,100,000  
Line of credit, Maximum borrowing capacity                             $ 62,000,000 $ 48,300,000    
[1] Based on capital contribution and distribution provisions in the joint venture agreement, we expect our economic interest in the venture's cash flow to be greater than the ownership percentage indicated above, which in this case, states our legal interest in this venture. Our economic interest may fluctuate based on a number of factors, including mortgage financing, partnership capital contributions and distributions, and proceeds from gains or losses of asset sales.