Commitments and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Contingencies And Commitments [Line Items]
Agreements entered into with general contractors for the construction or redevelopment of shopping centers	$ 11.6
Outstanding letters of credit	21.9
Affiliate debt guarantee	$ 4.5
Mortgage debt maturity, year and month	2020-10
Long-term ground leases expiration period	various dates through 2070
Minimum [Member]
Contingencies And Commitments [Line Items]
Period space in shopping centers leased	1 month
Maximum [Member]
Contingencies And Commitments [Line Items]
Period space in shopping centers leased	30 years