Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events Acquisitions (Details)

 v2.3.0.11
Subsequent Events Acquisitions (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jun. 30, 2011
Subsequent Event [Line Items]  
Business Acquisition, Cost of Acquired Entity, Cash Paid $ 134.0
Acquisition [Member]
 
Subsequent Event [Line Items]  
Subsequent Event, Date Jul. 15, 2011
Business Acquisition, Cost of Acquired Entity, Purchase Price 199.3
Business Acquisition, Cost of Acquired Entity, Cash Paid 125.8
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred $ 73.5
Atlantic City Outlets The Walk [Member]
 
Subsequent Event [Line Items]  
Square Footage of Real Estate Property 491,000
Number of Outlet Stores 100
Ocean City Factory Outlets [Member]
 
Subsequent Event [Line Items]  
Square Footage of Real Estate Property 200,000
Number of Outlet Stores 40