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Acquisitions - Summary of Acquired Shopping Centers (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2013 Tampa, FL, Atlanta, GA, Newport News, VA and Richmond, VA (2 assets) [Member]	Jun. 30, 2013 Parcels Adjacent to Existing Shopping Centers [Member]	Jun. 30, 2013 Dallas, TX [Member]	Jun. 30, 2013 Oakland, CA [Member]
Business Acquisition [Line Items]
Acquisition date of shopping centers		April 2013	June 2013	March 2013	February 2013
Gross Purchase Price		$ 110.5	$ 11.7	$ 40.3	$ 41.1
Face Value of Mortgage Debt Assumed	$ 103.8

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- Definition

Business Acquisition Cost Of Acquired Entity Purchase Price Gross

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Business Acquisition, Date of Acquisition

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The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 50

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-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586



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-Name Accounting Standards Codification

-Topic 230

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-Section 50

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-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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