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Organization (Details)
Dec. 31, 2016
state
country
property
May 11, 2015
Mar. 31, 2015
Dec. 31, 2014
Designer Outlet properties | Consolidated properties        
Real Estate Properties        
Number of properties 4      
U.S. and Puerto Rico        
Real Estate Properties        
Number of properties 206      
Number of U.S. states containing property locations | state 37      
U.S. and Puerto Rico | Malls        
Real Estate Properties        
Number of properties 108      
U.S. and Puerto Rico | Premium Outlets        
Real Estate Properties        
Number of properties 67      
U.S. and Puerto Rico | The Mills        
Real Estate Properties        
Number of properties 14      
U.S. and Puerto Rico | Community/Lifestyles Centers        
Real Estate Properties        
Number of properties 4      
U.S. and Puerto Rico | Other        
Real Estate Properties        
Number of properties 13      
Japan | Premium Outlets        
Real Estate Properties        
Number of properties 9      
South Korea | Premium Outlets        
Real Estate Properties        
Number of properties 3      
Canada | Premium Outlets        
Real Estate Properties        
Number of properties 2      
Canada | Designer Outlet properties        
Real Estate Properties        
Number of properties 1      
Mexico | Premium Outlets        
Real Estate Properties        
Number of properties 1      
Malaysia | Premium Outlets        
Real Estate Properties        
Number of properties 1      
Europe | Klepierre        
Real Estate Properties        
Ownership percentage 20.30% 20.30% 18.30% 28.90%
Number of countries | country 16      
Europe | Designer Outlet properties        
Real Estate Properties        
Number of properties 6      
Italy | Designer Outlet properties        
Real Estate Properties        
Number of properties 2      
Austria | Designer Outlet properties        
Real Estate Properties        
Number of properties 1      
Germany | Designer Outlet properties        
Real Estate Properties        
Number of properties 1      
Netherlands | Designer Outlet properties        
Real Estate Properties        
Number of properties 1      
United Kingdom | Designer Outlet properties        
Real Estate Properties        
Number of properties 1