Nature of Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) ft² in Millions		1 Months Ended	12 Months Ended
	Oct. 01, 2024 USD ($) Conveniencecenter	Dec. 31, 2025 USD ($) ft² Conveniencecenter	Dec. 31, 2025 USD ($) ft² Conveniencecenter Segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Oct. 01, 2024 Property
Summary Of Significant Accounting Policies [Line Items]
Percentage of ownership interest in operating partnership			99.10%
Number of convenience centers spin-off	79	176	176			26
Gross leasable area (GLA) included in anticipated spinoff \| ft²		4.8	4.8
Transaction costs related to the spin-off				$ 30,800,000
Capitalized costs			$ 200,000	1,100,000	$ 600,000
Proceeds from sale of land		$ 1,800,000
Gain on disposition of real estate		1,300,000
Impairment charges			0	0	0
Interest paid on mortgage indebtedness			5,900,000	500,000	$ 1,700,000
Interest costs capitalizedpaid on mortgage indebtedness			100,000
Gross facility and commitment fees paid for revolving credit facility and term loan			1,000,000	200,000
Accounts receivable, not probable of being collected amount		200,000	200,000	300,000
Allowance for straight line rent		300,000	300,000	300,000
Straight line rent receivable, net		$ 13,900,000	$ 13,900,000	$ 9,900,000
Segment reporting, factors used to identify entity's reportable segments			The Company has a single operating segment. The Company’s convenience 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.
Number of operating segments \| Segment			1
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]			Chief Executive Officer [Member]
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description			The CODM assesses performance for the segment and decides how to allocate resources based on net income as reported on the 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
Parent Company [Member]
Summary Of Significant Accounting Policies [Line Items]
Unrestricted cash transferred at time of spinoff	$ 800,000,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease term		1 month	1 month
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		20 years	20 years
Maximum [Member] \| Tenant [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease term		20 years	20 years

Curbline Properties Corp. 10-K