75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - CONSOLIDATED STATEMENTS OF EQUITY link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Nature of Business and Financial Statement Presentation link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Other Assets and Intangibles, net link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Indebtedness, net link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Financial Instruments and Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Accumulated Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Stock-Based Compensation and Employee Benefits link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Agreements and Transactions with SITE Centers link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Nature of Business and Financial Statement Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Nature of Business and Financial Statement Presentation (Tables) link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Other Assets and Intangibles, net (Tables) link:presentationLink link:calculationLink link:definitionLink 995615 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 995625 - Disclosure - Indebtedness, net (Tables) link:presentationLink link:calculationLink link:definitionLink 995635 - Disclosure - Financial Instruments and Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 995645 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 995655 - Disclosure - Stock-Based Compensation and Employee Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 995665 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 995675 - Disclosure - Nature of Business and Financial Statement Presentation - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995685 - Disclosure - Nature of Business and Financial Statement Presentation - Non-cash Investing and Financing Activities (Detail) link:presentationLink link:calculationLink link:definitionLink 995695 - Disclosure - Acquisitions - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995705 - Disclosure - Acquisitions - Schedule of Acquisition Cost of Shopping Centers (Detail) link:presentationLink link:calculationLink link:definitionLink 995715 - Disclosure - Other Assets and Intangibles, net - Components of Other Assets, Liabilities and Intangibles (Detail) link:presentationLink link:calculationLink link:definitionLink 995725 - Disclosure - Other Assets and Intangibles, net - Components of Other Assets, Liabilities and Intangibles (Detail) 2 link:presentationLink link:calculationLink link:definitionLink 995735 - Disclosure - Other Assets and Intangibles, net - Components of Other Assets, Liabilities and Intangibles (Detail) 3 link:presentationLink link:calculationLink link:definitionLink 995745 - Disclosure - Other Assets and Intangibles, net - Components of Other Assets, Liabilities and Intangibles ( (Parenthetical) (Detail) link:presentationLink link:calculationLink link:definitionLink 995755 - Disclosure - Other Assets and Intangibles, net - Summary of Amortization Related to the Intangibles Excluding Below-market Leases (As Lessee) (Detail) link:presentationLink link:calculationLink link:definitionLink 995765 - Disclosure - Leases - Summary of Operating Lease Income (Detail) link:presentationLink link:calculationLink link:definitionLink 995775 - Disclosure - Indebtedness, net - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995785 - Disclosure - Indebtedness, net - Summary of Outstanding Indebtedness (Detail) link:presentationLink link:calculationLink link:definitionLink 995795 - Disclosure - Financial Instruments and Fair Value Measurements - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995805 - Disclosure - Financial Instruments and Fair Value Measurements - Summary of Terms and Fair value of the Company's Derivative Financial Instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 995815 - Disclosure - Financial Instruments and Fair Value Measurements - Summary of Location in the Financial Statements of the Income Recognized on Interest Rate Swaps Designated as Cash Flow Hedges (Detail) link:presentationLink link:calculationLink link:definitionLink 995825 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995835 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated OCI by Component (Detail) link:presentationLink link:calculationLink link:definitionLink 995845 - Disclosure - Stock-Based Compensation and Employee Benefits - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995855 - Disclosure - Stock-Based Compensation and Employee Benefits - Summary of Non-Cash Compensation Expense (Detail) link:presentationLink link:calculationLink link:definitionLink 995865 - Disclosure - Earnings Per Share - Reconciliation of Net Income (Loss) and Number of Common Shares Used in Computations of "Basic" EPS and "Diluted" EPS (Detail) link:presentationLink link:calculationLink link:definitionLink 995875 - Disclosure - Earnings Per Share - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995885 - Disclosure - Agreements and Transactions with SITE Centers - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995895 - Disclosure - Subsequent Events - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink Acquisition Escrow Deposits Acquisition escrow deposits. Acquisition escrow deposits Related Party Transaction [Table] Service Based LTIP Units [Member] Service Based LTIP Units Service-based LTIP Units [Member] Scenario [Axis] Summary of Terms and Fair value of the Company's Derivative Financial Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Below Market Leases [Member] Below market leases. Below Market Leases (As Lessee) [Member] Debt Disclosure [Text Block] Indebtedness, net Nature of Business Nature Of Business Policy [Text Block] Nature of business. Interest expense Interest Expense, Total Interest expense Interest Expense, Operating and Nonoperating Purchase price Business Acquisitions Cost Of Acquired Entity Purchase Price Gross 1 Business acquisitions cost of acquired entity purchase price gross. Contingencies And Commitments [Line Items] Contingencies And Commitments [Line Items] Contingencies and commitments. Credit drawn under the facility Long-Term Line of Credit, Total Long-Term Line of Credit Term loan facility Revolving credit facility Debt Instrument, Basis Spread on Variable Rate Variable rate Commitments and Contingencies, Total Commitments and Contingencies Commitments and contingencies (Note 7) Weighted Average Number of Shares Outstanding, Diluted Diluted - Average shares outstanding Diluted - Average shares outstanding APIC, Share-Based Payment Arrangement, Increase for Cost Recognition APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total Stock-based compensation, net Debt Instrument, Maturity Date Range, Start Maturity date, start date Derivative, Effective Date Minimum [Member] Minimum [Member] Share Based Compensation Award Tranche Four [ Member] Share based compensation award tranche four. Vesting Year Four Uncollectible Revenue Uncollectible revenue. Uncollectible revenue Other assets: Other Assets Excluding Intangible Assets [Abstract] Other assets excluding intangible assets. Preferred shares, shares outstanding Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Schedule of Acquisition Cost of Shopping Centers Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Consolidated Entities [Domain] Consolidated Entities Common Stock, Shares, Issued Common shares, shares issued Debt Instrument, Face Amount Term loan Carrying Value Term loan Tax benefit (expense) of taxable REIT subsidiaries and state franchise and income taxes Income Tax Expense (Benefit) Income Tax Expense (Benefit), Total Income tax expense Forward interest rate swap agreement [Member] Forward Interest Rate Swap Agreement [Member] forward interest rate swap agreement. Related Party Transaction [Line Items] RSUs [Member] Restricted Stock Units (RSUs) [Member] Restricted stock units ("RSUs") [Member] Finite-Lived Intangible Assets, Major Class Name Intangible Asset, Finite-Lived, Class [Domain] Two Thousand Twenty Five Term Loan [Member] Two thousand twenty five term loan. 2025 Term Loan [Member] Service-based LTIP Units [Member] Servic Based Long Term Incentive Plan [Member] Servic based long term incentive plan. Aggregate of term loan and revolving credit facilities. Credit Facilities [Member] Credit Facilities [Member] Payments to Develop Real Estate Assets Real estate improvements to operating real estate Subsequent Event Type [Domain] Other income (expense), net Nonoperating Income (Expense) Nonoperating Income (Expense), Total Schedule of Long-Term Debt Instruments [Table] Debt Instrument [Table] Expense Amortization Expense of Intangibles Amortization expense of intangibles. General and Administrative Expense, Total General and administrative General and Administrative Expense General and administrative General and administrative expense Income Statement [Abstract] Comprehensive Income (Loss) Note [Text Block] Accumulated Other Comprehensive Income (Loss) Land Land Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Vesting [Axis] Schedule Of Finite Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Earnings Per Share, Basic Earnings Per Share, Basic, Total Basic Document Period End Date Document Period End Date Document Information [Table] Document Information [Table] Finite-Lived Intangible Assets, Net, Total Finite-Lived Intangible Assets, Net, Beginning Balance Finite-Lived Intangible Assets, Net, Ending Balance Intangible Asset, Finite-Lived, after Accumulated Amortization Total intangible assets Rebalancing of Non - Controilling Interest Rebalancing of non - controillingI interest. Rebalancing of non-controlling interests Debt Instrument [Line Items] Debt Instrument [Line Items] Common Stock, Shares Authorized Common shares, shares authorized Comprehensive (income) loss attributable to non-controlling interests Comprehensive Income Attributable to Non Controlling Interests Comprehensive income attributable to non controlling interests. Comprehensive income attributable to non-controlling interests Statement of Stockholders' Equity [Abstract] Dividends Payable Dividends payable Dividends declared, but not paid Land Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Land Unrestricted cash transferred at time of spinoff. Unrestricted Cash Transferred At Time of Spinoff Unrestricted cash transferred at time of spinoff Shopping centers owned Number of Real Estate Properties Number of convenience centers spin-off Reclassification out of Accumulated Other Comprehensive Income [Domain] Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax, Total Other comprehensive loss Other comprehensive income (loss) Debt instrument, interest rate Debt Instrument, Interest Rate, Stated Percentage Interest Rate Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Unamortized Debt Issuance Expense Less: Unamortized debt issuance costs Less: Unamortized debt issuance costs Net unamortized debt issuance costs Total assets Assets Title of 12(b) Security Title of 12(b) Security Preferred Stock, Value, Issued Preferred stock, par value Preferred Stock, par value $0.01 per share; 100,000,000 authorized; 0 shares outstanding at September 30, 2026 and December 31, 2025 Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Number of shares granted Title and Position [Domain] Derivative, Notional Amount Derivative, notional amount Notional amount of swap Real estate taxes Real Estate Tax Expense Real estate taxes Aggregate Percentage of Gross Revenue Aggregate percentage of gross revenue. Aggregate percentage of gross revenue Tenant Relationships [Member] Customer Relationships [Member] Percentage of Ownership Interest in Operating Partnership Percentage of ownership interest in operating partnership. Percentage of ownership interest in operating partnership Other Assets [Abstract] Share Based Compensation Award Tranche Five [ Member] Share based compensation award tranche five. Vesting Year Five Ending Balance Equity, Attributable to Parent Beginning Balance Total stockholders' equity Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative Summary of significant accounting policies. Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Earnings Per Share [Text Block] Earnings Per Share Interest Income, Other Interest income Fair Value [Member] Estimate of Fair Value Measurement [Member] Derivative Instruments, Gain (Loss) [Table] Long-Term Debt Total indebtedness Total Carrying amount of mortgage indebtedness Credit Facility [Axis] Credit Facility Stock, Class of Stock [Table] Schedule Of Stock By Class [Table] Interest Income (Expense), Nonoperating Interest Income (Expense), Nonoperating, Total Interest expense Below-market leases, Liability Below Market Lease, Gross Below-market lease Restricted Stock [Member] Restricted Stock [Member] Restricted Stock Awards [Member] Expected Gross Proceeds Of Shares Issued Through Forward Equity Agreement Expected gross proceeds of shares issued through forward equity agreement. Sale of common shares, value Accounts payable related to construction in progress Construction in Progress Expenditures Incurred but Not yet Paid Statistical Measurement [Axis] Statistical Measurement Gross leasable area (GLA) included in anticipated spinoff Area of Real Estate Property Gross leasable area owned Entity Interactive Data Current Entity Interactive Data Current Rental Income Rental income. Rental income Summary of Non-Cash Compensation Expense Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Common Stock, par value $0.01 per share; 400,000,000 shares authorized; 121,302,763 and 105,368,120 shares issued and outstanding at September 30, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Common stock, par value Reconciliation of Net Income (Loss) and Number of Common Shares Used in Computations of "Basic" EPS and "Diluted" EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Earnings Per Share Line Items. Schedule Of Earnings Per Share [Line Items] Schedule Of Earnings Per Share [Line Items] Parent Company [Member] Parent Company [Member] Total liabilities Liabilities Share-Based Payment Arrangement, Tranche Two [Member] Vesting Year Two Senior Notes [Member] Senior Notes [Member] Acquisitions Business Combination [Text Block] Less: Below-market leases Below Market Lease, Net, Total Below Market Lease, Net, Beginning Balance Below Market Lease, Net, Ending Balance Below Market Lease, Net Below-market leases, net Below-market leases, net Below-market leases, net Performance Based Restricted Stock Awards [Member] Performance based restricted stock awards. PRSAs [Member] Lease Origination Costs [Member] Lease origination costs. Lease Origination Costs [Member] Above-Market Leases [Member] Above Market Leases [Member] Total rental operation expenses Operating expenses Operating Expenses Total rental operation expenses Common Stock, Dividends, Per Share, Declared Dividends per share of common stock Distribution declared per share of common stock Revenues [Abstract] Revenues from operations: Vesting [Domain] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Statements of Cash Flows and Supplemental Disclosure of Non-Cash Investing and Financing Information Cash Flow Supplemental Disclosures Policy Policy [Text Block] Cash flow supplemental disclosures policy. Offering price per share Shares Issued, Price Per Share Stock Issued During Period, Shares, New Issues Sale of common shares Real estate acquired, net of liabilities and cash assumed Payments to Acquire Real Estate, Total Payments to Acquire Real Estate Gain on dispositions Gain (Loss) on Sale of Properties Gain on disposition of real estate Gain on disposition of real estate, net Accumulated Amortization Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Other Assets, Miscellaneous, Total Other assets Other Assets, Miscellaneous Operating Costs and Expenses, Total Operating and maintenance Operating Costs and Expenses Operating and maintenance Buildings Investment Building and Building Improvements Related Party Transactions [Abstract] Subsequent Events Subsequent Events [Text Block] Other Income Other income Dividends Declared But Not Paid Dividends declared but not paid. Dividends declared, but not paid Taxes Withheld For Vested Restricted Stock Taxes Withheld For Vested Restricted Stock Taxes withheld for vested restricted stock Weighted Average Amortization Period Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Follow-on Primary Offering [Member] Follow on Primary Offering [Member] Follow on primary offering. Below-Market Leases [Member] Below Market Lease [Member] Below market lease. Below Market Lease (As Lessee) [Member] Common Unit, Issuance Value Aggregate offering price Payments of Stock Issuance Costs Common stock offering expenses Schedule of antidilutive securities included in computation of dilutive earnings per share. Schedule Of Antidilutive Securities Included In Computation Of Dilutive Earnings Per Share [Table] Schedule Of Antidilutive Securities Included In Computation Of Dilutive Earnings Per Share [Table] Other Nonoperating Expense Other income (expense), net Underwriter Option to Purchase, Number of Additional Shares Underwriter option to purchase number of additional shares. Underwriter option to purchase, number of additional shares Total liabilities and equity Liabilities and Equity Indebtedness: Long-Term Debt, Unclassified [Abstract] Proceeds from unsecured notes Proceeds from Unsecured Notes Payable Finite-Lived Intangible Assets by Major Class Intangible Asset, Finite-Lived, Class [Axis] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Period Focus Non-cash Investing and Financing Activities Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Derivatives, Fair Value [Line Items] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Title and Position [Axis] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss [Line Items] Construction in progress and land Construction in progress and land Development in Process Construction in progress Sale of Stock [Axis] Buildings Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment, Building Entity Current Reporting Status Entity Current Reporting Status Use of Estimates, Policy [Policy Text Block] Use of Estimates in Preparation of Financial Statements Class of Stock [Domain] Class of Stock Document Transition Report Document Transition Report Commitments and Contingencies Disclosure [Abstract] Subsequent Event [Line Items] Share-Based Payment Arrangement [Abstract] Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity Common Stock [Member] Common Stock [Member] Common Stock [Member] Aggregate value of shares granted Share Based Compensation Arrangement by Share Based Payment Award Number of Shares Grant Aggregate Value Share based compensation arrangement by share based payment award number of shares grant aggregate value. Assets acquired Business Combination, Recognized Asset Acquired, Asset Credit Facility Credit Facility [Domain] Statistical Measurement [Domain] Statistical Measurement Other income (expense): Nonoperating Income (Expense) [Abstract] Finite-Lived Intangible Assets, Gross, Total Asset Intangible Asset, Finite-Lived, before Accumulated Amortization Basic - Average shares outstanding Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Assets Assets [Abstract] Indebtedness Notes and Loans Payable Notes and Loans Payable, Total Mortgage debt Mortgage indebtedness Entity Central Index Key Entity Central Index Key Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] At The Market Program [Member] At the market program. At The Market Program [Member] Class of Stock [Line Items] Class Of Stock [Line Items] Current Fiscal Year End Date Current Fiscal Year End Date Document Quarterly Report Document Quarterly Report Shared Services Agreement [Member] Shared Services Agreement [Member] Shared Services Agreement [Member] Total Stockholders Equity [Member] Total stockholders equity. Total Stockholders' Equity [Member] Tenant improvements Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Tenant Improvements Business combination recognized identifiable assets acquired and liabilities assumed tenant improvements. Business Combination [Abstract] Net cash flow provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Number of shares issued in transaction Sale of Stock, Number of Shares Issued in Transaction Preferred Stock, Par or Stated Value Per Share Preferred shares, par value Net income Net Income (loss) Segment Reporting, Factor Identifying Reportable Segment, Description Segment reporting, factors used to identify entity's reportable segments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total Change in cash flow hedges Change in fair value of cash flow hedges Amounts reclassified from Accumulated OCI to interest expense Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total Stock-based compensation, net Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Net current-period other comprehensive income 2026 Term Loan [Member] Delayed Draw Term Loan (DDTL) [Member] 2024 Term Loan [Member] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income attributable to Curbline Real Estate Assets At Cost Before Construction In Progress And Land Total real estate rental property Real estate assets at cost before construction in progress and land. The sum of potential dilutive forward equity shares used in the calculation of diluted per share. Forward Equity Assumed conversion of dilutive securities - Forward equity Scenario [Domain] Equity Components [Axis] Equity Components Cash flow from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Statement of Cash Flows [Abstract] Fixtures and tenant improvements Fixtures and Equipment, Gross Intangible assets, net Intangible Assets, Net (Excluding Goodwill), Total Intangible Asset, Excluding Goodwill, after Accumulated Amortization Fair Value Disclosures [Text Block] Financial Instruments and Fair Value Measurements Amounts receivable from SITE Centers Amounts Receivable from SITE Centers Amounts Receivable from SITE Centers. In-Place Leases [Member] In-Place Leases (Including Lease Origination Costs and Fair Market Value of Leases) [Member] Leases, Acquired-in-Place, Market Adjustment [Member] CEO [Member] Chief Executive Officer [Member] Share-Based Payment Arrangement, Tranche Three [Member] Vesting Year Three Preferred Stock, Shares Authorized Preferred shares, shares authorized Preferred Shares, without par value Restricted Share Awards [Member] Restricted share awards. Restricted Stock Awards Restricted Share Awards [Member] Derivative Contract [Domain] Class of Stock Class of Stock [Axis] Compensation and Employee Benefit Plans [Text Block] Stock-Based Compensation and Employee Benefits Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Options to purchase common shares not included in the computation of diluted EPS Number of Operating Segments Number of operating segments Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Total adjustments Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity Other comprehensive income before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Increase (Decrease) in Accounts Payable and Accrued Liabilities Net change in accounts payable and accrued expenses Amortization of above and below Market Leases Above-market and below-market leases amortization, net Above-market and below-market leases amortization, net Segments Segment Reporting, Policy [Policy Text Block] Business acquisition cost of acquired entities purchased during period. Business Acquisition Cost of Acquired Entities Purchased During Period Acquisition purchase price Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Revenues from the date of acquisition Business Combination, Acquiree's Revenue since Acquisition Date, Actual Intangible Asset, Goodwill and Other [Abstract] Dividends, Common Stock, Total Dividends, Common Stock Dividend and distributions, net declared Dividend and distributions, net declared Document Type Document Type Operating Lease, Lease Income [Table Text Block] Summary of Operating Lease Income Cash flow from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Liabilities and Equity Liabilities and Equity [Abstract] Subsequent Event [Member] Subsequent Event [Member] Increase (Decrease) in Other Operating Assets and Liabilities, Net Increase (Decrease) in Other Operating Assets and Liabilities, Net, Total Net change in other operating assets and liabilities Postemployment Benefits [Abstract] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Changes in Accumulated OCI by Component Accumulated Distributions in Excess of Net Income [Member] Accumulated Distributions in Excess of Net Income [Member] Entity File Number Securities Act File Number Entity File Number Nature of Business and Financial Statement Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Senior Unsecured Note [Member] Senior unsecured note. Senior Unsecured Note 2025 Notes Derivative Instrument Detail [Abstract] Entity Registrant Name Entity Registrant Name Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Other assets assumed Other assets assumed (including cash and restricted cash) Accounting Policies [Abstract] Schedule of Other Assets and Other Liabilities [Table Text Block] Components of Other Assets, Liabilities and Intangibles Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Proceeds from Real Estate and Real Estate Joint Ventures Proceeds from disposition of real estate Proceeds from Issuance of Debt Proceeds from term loan Separation and Distribution Agreement [Member] Separation and distribution agreement. Separation and Distribution Agreement [Member] Amounts reclassified from accumulated OCI to interest expense Amounts reclassified from accumulated other comprehensive income to interest expense. Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense Amounts reclassified from Accumulated OCI to interest expense Entity Address, Address Line One Entity Address, Address Line One Net Income (Loss) Attributable to Noncontrolling Interest Income attributable to non-controlling interests Net income attributable to non-controlling interests Income attributable to non-controlling interests Income attributable to non-controlling interests Net income attributable to non-controlling interests Prepaid expenses Prepaid Expense Amounts Payable to SITE Centers Amounts payable to SITE Centers Amounts payable to SITE Centers. Gross proceeds Proceeds from Issuance or Sale of Equity Proceeds from Issuance or Sale of Equity, Total Accounts Payable Related to Offering Expense Accounts payable related to offering expense. Accounts payable related to offering expense Lease Income Total rental income Lease income Forward equity agreement settled Common Shares Settled Through Forward Equity Agreement Common shares settled through forward equity agreement. Related Party Transactions Disclosure [Text Block] Agreements and Transactions with SITE Centers Net assets acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Entity Small Business Entity Small Business Restricted Stock Units and Restricted Stock Awards [Member] Restricted stock units and restricted stock awards. RSUs and RSAs [Member] Assumption of buildings due to ground lease terminations Assumption Of Building Due To Ground Lease Termination Assumption of building due to ground lease termination. Long-Term Debt, Type [Axis] Long-Term Debt, Type Other assets, net Other Assets Other assets Total other assets Schedule of Long-Term Debt Instruments [Table Text Block] Summary of Outstanding Indebtedness Per share data: Earnings Per Share [Abstract] Swap receivable. Swap Receivable Swap receivable Subsequent Event Type [Axis] Equity [Abstract] Cash flow from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Consolidated Entities [Axis] Consolidated Entities 2026 Notes [Member] Two Thousand Twenty Six Notes [Member] Two thousand twenty six notes. Non-Controlling Interests Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Entity Tax Identification Number Entity Tax Identification Number Entity Tax Identification Number Two Thousand Twenty Four Term Loan One [Member] Two thousand twenty four term loan. 2024 Term Loan [Member] Derivative Instrument [Axis] Equity Component [Domain] Equity Component Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Entity Address, City or Town Entity Address, City or Town Entity Address, City or Town Intangible assets, net: Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] Business Acquisition Business Combination [Axis] Intangible Asset, Excluding Goodwill, after Accumulated Amortization [Abstract] Finite Lived Intangible Assets [Line Items] Intangible Asset, Finite-Lived [Line Items] Operating Lease, Variable Lease Income Variable lease income Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Undistributed Earnings (Loss) Allocated to Participating Securities, Basic, Total Earnings attributable to unvested shares Earnings attributable to unvested shares Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Below-market leases, Accumulated Amortization Below-market leases, Accumulated Amortization Below Market Lease, Accumulated Amortization Line Of Credit Facility Maturity Date Line of credit facility maturity date. Maturity Date Purchase order obligations for the maintenance and general expenses of shopping centers Commitments For Maintenance Gen Exp Of Properties Commitments for maintenance gen exp of properties. Purchase order obligations for the maintenance and general expenses of convenience properties Measurement Basis [Axis] Measurement Basis Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominators - Number of Shares Statement [Table] Statement [Table] Construction in Progress Receivables not yet Received Accounts receivable related to construction in progress Construction in Progress Receivables not yet Received Escrow Deposit Disbursements Related to Property Acquisition Acquisition escrow deposits and accruals Lease, Cost Lease, Cost, Total Lease, cost Lease, cost Total non-cash compensation expense Share-Based Payment Arrangement, Expense Total non-cash compensation expense Income before tax benefit (expense) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before tax expense Income tax expense Real Estate Property, Ownership [Table] Entity Shell Company Entity Shell Company Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash flow used for investing activities Statement [Line Items] Statement [Line Items] Accounts Payable and Accrued Liabilities, Total Accounts payable and other liabilities Accounts Payable and Accrued Liabilities Maximum [Member] Maximum [Member] Debt Disclosure [Abstract] Sale of Stock [Domain] Business Acquisition, Acquiree Business Combination [Domain] Operating Lease, Lease Income, Lease Payments Fixed lease income Term Loan [Member] Term Loan [Member] Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing. Term Loan Grant employment agreement value Share Based Compensation Arrangement By Share Based Payment Award Granted Agreed Value Share based compensation arrangement by share based payment award granted agreed value. Principles of Consolidation Consolidation, Policy [Policy Text Block] Stock-based awards retained for taxes Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Subsequent Events [Abstract] Earnings Per Share, Basic [Abstract] Earnings Per Share: Amortization and write-off of debt issuance costs Amortization of Debt Issuance Costs The entire disclosure surrounding leases. Leases Disclosure [Text Block] Leases Equity Method Investments [Policy Text Block] Equity Debt Issuance Costs, Net Debt Issuance Costs, Net, Total Less: Deferred charges, net Deferred charges, net Deferred financing costs, net of accumulated amortization of $250 Gains and Losses on Cash Flow Hedges [Member] Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Leases [Abstract] Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Year Focus Assumption of buildings due to ground lease terminations Noncash or Part Noncash Acquisition, Fixed Assets Acquired Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding Common stock, shares outstanding Common shares, shares outstanding Beginning Balance Ending Balance Equity, Including Portion Attributable to Noncontrolling Interest Total equity Accumulated equity Ending Balance Deposits Deposits Assets Statement of Comprehensive Income [Abstract] Business Acquisition [Line Items] Business Combination [Line Items] Summary [Member] Summary member Summary [Member] Forecast [Member] Forecast [Member] Entity Ex Transition Period Entity Ex Transition Period Award Type Less: Other liabilities assumed Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Security Exchange Name Security Exchange Name Revenues from operations Total revenue from operations Revenues Total New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Standards Embedded lease rent expense Rent Expense Rent expense. Lease, cost Entity Address, State or Province Entity Address, State or Province Accounts Receivable, after Allowance for Credit Loss, Total Accounts Receivable, after Allowance for Credit Loss Accounts receivable, net Accounts receivable, net Senior Notes Senior Notes, Total Senior notes, net Amendment Flag Amendment Flag Other Nonoperating Income (Expense) Other Nonoperating Income (Expense), Total Other nonoperating income Unaudited Interim Financial Statements Policy [Text Block] Unaudited interim financial statements. Unaudited Interim Financial Statements City Area Code City Area Code Common Shares To Be Issued Through Forward Equity Agreement Included In Computation Of Diluted E P S Forward equity agreement Common Shares To Be Issued Through Forward Equity Agreement Included In Computation Of Diluted EPS Shopping Center Acquired [Member] Shopping Centers Acquired [Member] Shopping centers acquired. Organization, Consolidation and Presentation of Financial Statements [Abstract] Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Gross proceeds The sum of potential dilutive PRSUs used in the calculation of diluted per share. Performance Restricted Stock Units Assumed conversion of dilutive securities - PRSUs Assumed conversion of dilutive securities - PRSAs and PB LTIPs Amortization Income of Intangibles Amortization income of intangibles. Income Rental operation expenses: Operating Expenses [Abstract] Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Gain (loss) on derivative instruments, net Common Stock, par value Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings Adjustments to additional paid in capital, dividends declared Treasury Lock [Member] Treasury Lock [Member] Treasury Lock Agreement [Member] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Debt Instrument, Maturity Date Range, End Maturity date, end date Derivative, Maturity Date Derivative Instruments and Hedging Activities Disclosure [Abstract] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative Accumulated distributions in excess of net income Accumulated Distributions in Excess of Net Income Accumulated Distributions in Excess of Net Income, Total Trading Symbol Trading Symbol Equity offering costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Accounts payable related to future acquisitions. Accounts Payable Related to Future Acquisitions Accounts payable related to future acquisitions Subsequent Event [Table] Number of awards, Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based compensation arrangement by share-based payment award, shares granted Entity Emerging Growth Company Entity Emerging Growth Company Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Derivative, Fair Value Derivative, Fair Value, Net Derivative, Fair Value, Net, Total Real estate rental property, net Real Estate Assets Net Before Construction In Progress And Land Real estate assets net before construction in progress and land. Fair Value Measurement [Domain] Fair Value Measurement Share-Based Payment Arrangement, Tranche One [Member] Vesting Year One Portion at Fair Value Measurement [Member] [Default] Portion at Fair Value Measurement [Member] Dividends paid Payments of Dividends Payments of Dividends, Total Dividends paid Executive Officer [Member] Executive Officer [Member] Business Combination [Table] Schedule Of Business Acquisitions By Acquisition [Table] Performance Based Long Term Incentive Plan [Member] Performance based long term incentive plan. PB LTIPs [Member] PB LTIPs [Member] Cover [Abstract] Weighted average forward price per share. Weighted Average Forward Price Per Share Weighted-average price Two Thousand Twenty Six Term Loan [Member] Two thousand twenty six term loan member. 2026 Term Loan [Member] Non-controlling interests Equity, Attributable to Noncontrolling Interest Equity, Attributable to Noncontrolling Interest, Ending Balance Equity, Attributable to Noncontrolling Interest, Beginning Balance Equity, Attributable to Noncontrolling Interest, Total Intangible assets acquired Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived In-place leases (including lease origination costs and fair market value of leases) Long-Term Debt, Type [Domain] Long-Term Debt, Type Less: Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Total real estate assets, net Real Estate Investment Property, Net Share-Based Payment Arrangement, Noncash Expense Share-Based Payment Arrangement, Noncash Expense, Total Stock -based compensation Additional Paid in Capital, Total Additional Paid in Capital Additional paid-in-capital Net income (loss) attributable to SITE common shareholders after allocation to participating securities. Net Income Loss Attributable To Common Shareholders After Allocation To Participating Securities Net income attributable to common stockholders after allocation to participating securities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net income to net cash flow provided by operating activities: Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Summary of Location in the Financial Statements of the Income Recognized on Interest Rate Swaps And Treasury Locks Designated as Cash Flow Hedges Fair Value Disclosures [Abstract] Cash and Cash Equivalents, at Carrying Value, Total Cash and cash equivalents Cash and Cash Equivalent Payments of Debt Issuance Costs Payment of debt issuance costs Payment of debt issuance costs Noncontrolling Interest [Member] Non-controlling Interests - Unit Holders in Operating Partnership [Member] Non-Controlling Interests [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income Loss [Table] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash flow provided by financing activities Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block] Summary of Amortization Related to the Intangibles Excluding Below-market Leases (As Lessee) Net income attributable to Curbline Net income attributable to Curbline Net Income (Loss) Available to Common Stockholders, Basic Interest Rate Swap [Member] Interest Rate Swap [Member] Derivative Instruments, Gain (Loss) [Line Items] Term loans, net Term Loan Term loan. Entity Filer Category Entity Filer Category Stock issued during period value share based compensation net of costs. Stock Issued During Period Value Share Based Compensation Net Of Costs Issuance of common stock related to stock plans Net decrease in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Continuing Operation Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Issuance of common stock for cash offering Issuance Of Common Stock For Cash Offering Amount Issuance Of Common Stock For Cash Offering Amount Net change in accounts receivable Increase (Decrease) in Accounts Receivable Number Of Convenience Centers Acquired 1 Number of convenience shopping centers acquired Number of convenience centers acquired. Other Assets and Intangibles, net Other Assets Disclosure [Text Block] Document Information [Line Items] Document Information [Line Items] New Lease [Member] New lease. New Lease [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Statement of Financial Position [Abstract] Local Phone Number Local Phone Number