Quarterly report pursuant to Section 13 or 15(d)

Developments of Consolidated Outlet Centers (Details)

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Developments of Consolidated Outlet Centers (Details)
ft² in Thousands, $ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
ft²
Jul. 31, 2016
ft²
Properties under development [Member]    
Real Estate Properties [Line Items]    
Square Feet | ft² 475  
Costs incurred to date | $ $ 59.5  
Fort Worth [Member]    
Real Estate Properties [Line Items]    
Square Feet | ft² 352  
Costs incurred to date | $ $ 35.9  
Lancaster [Member]    
Real Estate Properties [Line Items]    
Square Feet | ft² 123 123
Costs incurred to date | $ $ 23.6