Other Assets and Intangibles, net - Components of Other Assets and Intangibles (Parenthetical) (Detail)		1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 07, 2024 USD ($)	Oct. 31, 2023 USD ($) Property	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) Property	Sep. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Amortization expense			$ 4,400,000	$ 5,500,000	$ 13,600,000	$ 17,700,000
Prepaid expenses			11,007,000		$ 11,007,000			$ 5,104,000
Initial terms of sale of two assets					In connection with the sale of two assets in June 2024 to unrelated third parties, intercompany ground leases related to certain portions of land that had initial terms of 90-years and 99-years, respectively, with a fixed, prepaid rent of $1 were assumed by the buyers. Such intercompany ground leases were previously eliminated in consolidation and treated as a sale leaseback when the shopping centers were sold. The leased back land pertains to land underlying convenience assets that were retained by the Company. Upon sale of the shopping centers, the Company recognized below-market ground lease assets of approximately $13.7 million.
Prepaid rent			1		$ 1
Right of use asset							$ 13,700,000
Curbline
Debt Instrument [Line Items]
Prepaid expenses			5,000,000		5,000,000
Mortgages
Debt Instrument [Line Items]
Mortgage facility		$ 1,100,000,000
Number of properties | Property		40
Fee wrote-off			10,900,000		21,200,000
Mortgage Facility
Debt Instrument [Line Items]
Mortgage facility			$ 206,900,000		$ 206,900,000
Number of properties | Property					13
Proceeds from mortgage facility	$ 530,000,000