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Property and Equipment, Net - Additional Information (Details) (USD $)
3 Months Ended 9 Months Ended 0 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Jun. 24, 2011
Shoppes At Palazzo [Member]
Sep. 30, 2014
Shoppes At Palazzo [Member]
Dec. 31, 2013
Shoppes At Palazzo [Member]
Sep. 30, 2014
Construction in Progress [Member]
Dec. 31, 2013
Construction in Progress [Member]
Sep. 30, 2014
Construction in Progress [Member]
Other [Member]
Dec. 31, 2013
Construction in Progress [Member]
Other [Member]
Property, Plant and Equipment [Line Items]                        
Property and equipment, gross $ 20,905,931,000   $ 20,905,931,000   $ 20,219,954,000       $ 1,585,713,000 $ 1,150,349,000 $ 365,434,000 $ 325,327,000
Proceeds from sale of mall assets           295,400,000            
Deferred proceeds from sale of The Shoppes at The Palazzo 268,667,000   268,667,000   268,541,000 266,200,000            
Property and equipment, net 15,355,117,000   15,355,117,000   15,358,953,000   230,800,000 239,300,000        
Accumulated depreciation and amortization 5,550,814,000   5,550,814,000   4,861,001,000   80,500,000          
Capitalized interest expense 2,900,000 900,000 6,200,000 3,300,000                
Capitalized internal costs $ 9,600,000 $ 5,900,000 $ 23,700,000 $ 16,900,000