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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2013
Nov. 04, 2009
Minimum [Member]
Dec. 31, 2013
Coventry II Joint Ventures [Member]
Property
Dec. 31, 2013
Oxford [Member]
Jan. 23, 2013
Oxford [Member]
Contingencies And Commitments [Line Items]          
Number of existing retail properties     10    
Minimum amount of compensatory and consequential damages   $ 500      
Amount transferred to pay vendors pursuant to an agreement         11
Unasserted claim under agreement       5  
Aggregate amount related to construction of shopping centers 14.7        
Outstanding letters of credit 26.7        
Affiliate debt guarantee $ 5.2        
Long-term ground leases expiration period 2070        
Period space in shopping centers leased One month to 30 years