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Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Jan. 01, 2021
Segment
Dec. 31, 2021
USD ($)
Oct. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Segment
Dec. 31, 2020
USD ($)
Segment
Dec. 31, 2019
USD ($)
Segment
Summary Of Significant Accounting Policies [Line Items]            
Capitalized costs       $ 3,100,000 $ 3,000,000.0 $ 3,800,000
Impairment charges related to consolidated real estate investment       7,270,000 5,200,000 3,370,000
Interest paid       70,200,000 76,000,000.0 79,500,000
Capitalized interest paid       600,000 900,000 1,300,000
Accounts receivable, not probable of being collected amount   $ 3,000,000.0   3,000,000.0 4,700,000  
Allowance for straight line rent   1,600,000   1,600,000 2,100,000  
Straight line rent receivable, net   $ 29,800,000   $ 29,800,000 29,300,000  
Contract asset, explanation of change         The portion of payments retained by the customer until the second contingent event is not considered a significant financing component because the right to payment is expected to become unconditional within one year or less.  Contract assets are transferred to receivables when the right to payment becomes unconditional    
Stock-based compensation cost recognized by the company       $ 13,000,000.0 $ 8,000,000.0 $ 9,200,000
Number of reportable segments | Segment 1     1 2 2
Transferred And Redeemed Loan Investments         the Company transferred and redeemed its loan investments (preferred equity interests) in BRE DDR Retail Holdings III (“BRE DDR III”) and BRE DDR Retail Holdings IV (“BRE DDR IV,” and together with BRE DDR III, the “BRE DDR Joint Ventures”) in exchange for the acquisition of certain of the underlying assets of two joint ventures  
Quantitative threshold of revenues, profit or loss and assets for identifying reportable segments       The Company’s chief operating decision maker may review operational and financial data on a property basis and does not differentiate among properties on a geographical basis for purposes of allocating resources or capital.  The Company evaluates individual property performance primarily based on net operating income before depreciation, amortization and certain nonrecurring items.  Each consolidated shopping center is considered a separate operating segment; however, each shopping center, on a stand-alone basis, represents less than 10% of revenues, profit or loss, and assets of the combined reported operating segment and meets the majority of the aggregations criteria under the applicable standard.    
Retail Value Inc. [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Aggregate purchase price       $ 1.00    
Property Management Fees Description       RVI property management fees are paid monthly generally based on the average gross revenue collected during the three months immediately preceding the most recent December 31 or June 30.  The Company received a supplemental fee from RVI for the period July 1, 2020 to June 30, 2021 to negate the adverse impact of the COVID-19 pandemic on revenue collection and the resulting reduction to the property management fee payable to the Company.  The fee arrangement was amended and modified beginning January 1, 2022.    
Disposition fees equal to percentage of gross sale price       1.00%    
Minimum [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Operating lease term   1 month   1 month    
Minimum [Member] | Geographic Concentration Risk [Member] | Revenues [Member] | Shopping Center [Member] | Stand-Alone Shopping Center [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Percentage of revenues       10.00%    
Minimum [Member] | Tenant [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Operating lease term   1 month   1 month    
Maximum [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Operating lease term   30 years   30 years    
Maximum [Member] | Retail Value Inc. [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Distribution Received     $ 190,000,000.0      
Maximum [Member] | Tenant [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Operating lease term   30 years   30 years    
Adoption of Topic 606 [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Revenue recognized percentage upon lease execution       50.00%    
Revenue recognized percentage upon tenant rent commencement       50.00%    
Spin-off [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Distribution Received     $ 190,000,000.0      
Aggregate purchase price   $ 1.00        
Real Estate Investment [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Impairment charges related to consolidated real estate investment       $ 7,300,000 $ 5,200,000 $ 3,400,000