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 $)
In Millions, unless otherwise specified
3 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Charlotte [Member]
sqft
Dec. 31, 2013
Charlotte [Member]
May 30, 2013
Charlotte [Member]
Mar. 31, 2014
RioCan Canda [Member]
Dec. 31, 2013
RioCan Canda [Member]
Mar. 31, 2013
Cookstown [Member]
Mar. 31, 2014
Cookstown [Member]
sqft
store
Mar. 31, 2014
Ottawa [Member]
sqft
store
Jun. 30, 2013
Ottawa [Member]
Jan. 31, 2014
Savannah [Member]
Mar. 31, 2014
Savannah [Member]
Jan. 23, 2014
Savannah [Member]
sqft
Mar. 31, 2014
Westgate [Member]
Dec. 31, 2013
Westgate [Member]
Schedule of Equity Method Investments [Line Items]                                
Equity method investments $ 171.0 $ 140.2 $ 20.7 $ 11.6   $ 86.7 $ 85.7           $ 20.8   $ 15.8 $ 16.1
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity 2.3 1.6                            
Ownership %     50.00% 50.00% 50.00% 50.00% 50.00%           50.00%   58.00% 58.00%
Estimated square footage of real estate property when completed     400,000                     385,000    
Company portion of contributed capital to the joint venture     20.3             17.2   20.9        
Number of outlet stores                 35 80            
Payments to acquire real estate               13.9     28.7          
Estimated square feet of expansion                 153,000 303,000            
Partner's Portion of Contributed Capital to the Joint Venture                       7.4        
Joint venture initial required equity contribution, company portion                         $ 7.4      
Preferred return percentage prior to grand opening date                         8.00%      
Preferred return percentage after grand opening date                         10.00%