Components of Rental Income and Expense (Schedule Of Minimum Rent) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Components Of Rental Income and Expense [Abstract]
Straight-line rents	$ 5.1us-gaap_StraightLineRent	$ 5.4us-gaap_StraightLineRent	$ 6.1us-gaap_StraightLineRent
Net amortization of above and below market leases	$ 2.4	$ 3.1	$ 1.1

Difference between actual rental income due and rental income recognized on a straight-line basis.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Name:	us-gaap_StraightLineRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration