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Segment Information - Company's Combined Shopping and Office Properties Portfolios (Detail)	Dec. 31, 2013 ShoppingCenter	Dec. 31, 2012 ShoppingCenter	Dec. 31, 2011 ShoppingCenter
Shopping Centers [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Number of properties	416	452	432
Shopping Centers [Member] | Excludes Brazil and Puerto Rico [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Number of states	39	39	38
Shopping Centers [Member] | Joint ventures [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Number of properties	173	209	179
Office Properties [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Number of properties	0	0	5
Number of states	0	0	3

X

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_SegmentReportingAssetReconcilingItemLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration