Summary Of Significant Accounting Policies Summary of Significant Accounting Policies (Revenues from below market leases and Expenses from In-place leases) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accounting Policies [Abstract]
Revenues related to below market leases	$ 0.2	$ 0.2	$ 0.9	$ 1.2
Amortization of in-place leases	$ 1.4	$ 2.4	$ 4.5	$ 10.8