Variable Interest Entities (Narrative) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2014 jvs property	Dec. 31, 2013 jvs property
Consolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Number of VIE real estate joint ventures	1	2
Number of neighborhood/community shopping centers	16	28
Unconsolidated Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Number of VIE real estate joint ventures	1	1