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Summary of Significant Accounting Policies - Additional Information (Detail) shares in Millions, ft² in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 01, 2024 USD ($) ft² Property | Aug. 31, 2024 USD ($) shares | Dec. 31, 2024 USD ($) ft² Parcel ShoppingCenter | Dec. 31, 2023 USD ($) ShoppingCenter | Dec. 31, 2022 USD ($) ShoppingCenter
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Capitalized costs |  |  | $ 3,000,000 | $ 3,200,000 | $ 4,000,000
Impairment charges related to consolidated real estate investment |  |  | 66,600,000 | 0 | 2,536,000
Interest paid |  |  | 60,300,000 | 76,300,000 | 71,300,000
Capitalized interest paid |  |  | 600,000 | 1,200,000 | 1,100,000
Accounts receivable, not probable of being collected amount |  |  | 800,000 | 500,000 |
Allowance for straight line rent |  |  | 500,000 | 1,400,000 |
Treasury shares cancelled as a result of a reverse stock split | shares |  | 1.2 |  |  |
Cancellation of treasury stock, value |  |  | 0 |  |
Straight line rent receivable, net |  |  | 7,900,000 | 21,200,000 |
Gross proceeds from sale of real estate assets |  |  | $ 2,245,100,000 | $ 854,500,000 | $ 213,600,000
Number of shopping centers owned | ShoppingCenter |  |  | 33 |  |
Number of shopping centers owned through unconsolidated joint ventures | ShoppingCenter |  |  | 11 |  |
Gross leasable area (GLA) included in anticipated spinoff | ft² |  |  | 8.8 |  |
Number of shopping centers and various outparcels sold | ShoppingCenter |  |  | 40 | 17 | 5
Number of land parcel | Parcel |  |  | 1 |  |
Gain on dispositions |  |  | $ 633,200,000 | $ 218,700,000 | $ 46,600,000
Gain on disposition |  |  | $ 633,219,000 | 219,026,000 | 46,644,000
Fee percentage of aggregate amount of gross revenue |  |  | 2.00% |  |
Termination fee paid | $ 12,000,000 |  |  |  |
Stock-based compensation cost recognized by the company |  |  | $ 6,300,000 | $ 7,100,000 | 6,800,000
Quantitative threshold of revenues, profit or loss and assets for identifying reportable segments |  |  | The Company has a single operating segment. The Company’s shopping centers have common characteristics and are managed on a consolidated basis. The Company does not differentiate among properties on a geographical basis, or any other basis for purposes of allocating resources or capital. The Company’s Chief Operating Decision Maker (“CODM”) may review operational and financial data on an ad-hoc basis at a property level.The Company’s CODM is the chief executive officer. The CODM assesses performance for the segment and decides how to allocate resources based on net income as reported on the Company’s consolidated statements of operations. In addition, the CODM uses net operating income (“NOI”) as a supplemental measure to evaluate and assess the performance of the Company’s operating portfolio. NOI is defined as property revenues less property-related expenses and excludes depreciation and amortization expense, joint venture equity and fee income, interest income and expenses and corporate level transactions. The CODM uses net income and NOI to monitor budget versus actual results in assessing the performance of the Company’s properties to guide decisions regarding timing of property sales and payment of dividends. The CODM reviews significant expenses associated with the Company’s single reportable operating segment which are presented in the Company’s consolidated statements of operations. The measure of segment assets is reported in the Company’s consolidated balance sheets as total consolidated assets. |  |
Additional Paid-in Capital [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Cancellation of treasury stock, value |  | $ (64,000,000) | $ (63,900,000) |  |
Curbline [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of convenience centers spin-off | Property | 79 |  |  |  |
Gross leasable area (GLA) included in anticipated spinoff | ft² | 2.7 |  |  |  |
Investments and Cash | $ 800,000,000 |  |  |  |
Shared Services Agreement [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Fee percentage of aggregate amount of gross revenue | 2.00% |  |  |  |
Separate fee amount related to the provision of services | $ 0 |  |  |  |
Agreement expiring date | Oct. 01, 2027 |  |  |  |
Description of event of certain early terminations | In the event of certain early terminations of the Shared Services Agreement, the Company will be obligated to pay a termination fee to the Operating Partnership equal to $2.5 million multiplied by the number of whole or partial fiscal quarters remaining in the Shared Services Agreement’s three-year term (or $12.0 million in the event the Company terminates the agreement for convenience on its second anniversary). |  |  |  |
Termination fee paid | $ 2,500,000 |  |  |  |
Termination term | 3 years |  |  |  |
Minimum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Operating lease term |  |  | 1 month |  |
Minimum [Member] | Tenant [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Operating lease term |  |  | 1 month |  |
Maximum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Operating lease term |  |  | 15 years |  |
Maximum [Member] | Tenant [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Operating lease term |  |  | 15 years |  |
Real Estate Investment [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Impairment charges related to consolidated real estate investment |  |  | $ 66,600,000 |  | $ 2,500,000

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