Cover [Abstract] Document Type Document Type Document Annual Report Document Annual Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Document Financial Statement Error Correction Entity Shell Company Entity Shell Company Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Common Stock, Shares, Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Auditor Name Auditor Location Auditor Firm ID Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Assets [Abstract] ASSETS Sales-Type Lease, Net Investment in Lease, after Allowance for Credit Loss Net Investment in Sales-type Leases, Ending Balance Net Investment in Sales-type Leases, Beginning Balance Net investment in sales-type leases ($6,821 and $465 of allowances as of December 31, 2024 and 2023, respectively) Net investment in sales-type leases Net investment in sales-type leases Amount, after allowance for credit loss, of net Ground Lease receivable. Ground Lease Receivable, Net Ground Lease Receivables, Ending balance Ground Lease Receivables, Beginning balance Ground Lease receivables, net ($3,664 and $369 of allowances as of December 31, 2024 and 2023, respectively) Ground Lease receivables Real Estate Investment Property, at Cost Real estate, at cost Real Estate Investment Property, Accumulated Depreciation Less: accumulated depreciation Less: accumulated depreciation Real Estate Investment Property, Net Real estate, net Finite-Lived Intangible Assets, Net Real estate-related intangible assets, net Carrying Value Real Estate, Held-for-Sale Real estate available and held for sale Real Estate Investment Property Including Finite-Lived Intangible Assets, Net Real Estate Investment Property Including Finite-Lived Intangible Assets, Net Total real estate, net and real estate-related intangible assets, net and real estate available and held for sale Financing Receivable, after Allowance for Credit Loss Loans receivable, net - related party ($2,311 and $2,429 of allowances as of December 31, 2024 and 2023, respectively) Loan receivable, net Equity Method Investments Equity investments Carrying value Goodwill Balance at September 30, 2023 Balance at December 31, 2022 Goodwill Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Restricted Cash Restricted cash Deferred Income Tax Assets, Net Deferred tax asset, net Deferred tax asset, net Deferred Rent Receivables, Net Deferred operating lease income receivable Deferred Costs and Other Assets Deferred expenses and other assets, net Deferred expenses and other assets, net Assets Assets Total assets Liabilities and Equity [Abstract] LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY Liabilities [Abstract] Liabilities: Accounts Payable and Accrued Liabilities Accounts payable, accrued expenses and other liabilities Accounts payable, accrued expenses and other liabilities Below Market Lease, Net Real estate-related intangible liabilities, net Below-market lease liabilities - Carrying Value Long-term Debt Debt obligations, net Total debt obligations, net Total debt obligations, net Liabilities Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (refer to Note 10) Redeemable Noncontrolling Interest, Equity, Carrying Amount Balance at the end of the period Balance at the beginning of the period Redeemable noncontrolling interests (refer to Note 3) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity Stockholders' Equity Attributable to Parent [Abstract] Equity: Common Stock, Value, Issued Common stock, $0.01 par value, 400,000 shares authorized, 71,440 and 71,077 shares issued and outstanding as of December 31, 2024 and 2023, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Stockholders' Equity Attributable to Parent Total Safehold Inc. shareholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance at the end of the period Balance at the beginning of the period Total equity Liabilities and Equity Total liabilities, redeemable noncontrolling interests and equity Related Party [Axis] Related Party [Domain] Related Party [Member] Related party Sales-type Lease, Net Investment in Lease, Allowance for Credit Loss Allowance for credit losses Allowance for credit losses at end of period Allowance for credit losses at beginning of period Net investment in sales-type leases, allowances Amount of allowance for credit loss on Ground Lease financing receivable. Ground Lease Receivable, Allowance for Credit Losses Ground Lease receivables, allowances Amount of allowance for credit loss on loan receivable due from parties associated with the reporting entity as evidenced by a written promise to pay. Loans receivable, Related Parties, Allowances Loans receivable, net - related party, allowances Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) Income Statement [Abstract] Income Statement Revenues [Abstract] Revenues: Sales-type Lease, Interest Income Interest income from sales-type leases Total interest income from sales-type leases Operating Lease, Lease Income Operating lease income Interest Income, Operating Interest income - related party Other Income Other income Revenues Total revenues Total revenues Costs and Expenses [Abstract] Costs and expenses: Interest Expense Interest expense Subtotal interest expense Cost of Goods and Services Sold Real estate expense Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation and amortization General and Administrative Expense General and administrative Subtotal general and administrative Goodwill, Impairment Loss Impairment Impairment of goodwill Provision for Loan, Lease, and Other Losses Provision for (recovery of) credit losses Provision for credit losses Other Expenses Other expense Costs and Expenses Total expenses Total costs and expenses The difference between the carrying value and the sale price of a lease held for investment. A gain would be recognized when the sale price of the lease investment is greater than the carrying value of the lease investment. This element refers to the gain or loss included in earnings and not to the cash proceeds of the sale. Gain (Loss) on Sale of Leases Held For Investment Gain on sale of Ground Leases Gain on sale of Ground leases Operating Income (Loss) Income (loss) from operations before other items Income (Loss) from Equity Method Investments Earnings from equity method investments Earnings (losses) from equity method investments Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net income (loss) before income taxes Income Tax Expense (Benefit) Income tax expense Income tax (benefit) expense Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income (loss) Net income Net Income (Loss) Attributable to Noncontrolling Interest Net (income) loss attributable to noncontrolling interests Net gain attributable to noncontrolling interests Net income (loss) attributable to Safehold Inc. common shareholders Net income attributable to parent entities Earnings Per Share [Abstract] Net income (loss) Earnings Per Share, Basic Net income (loss) attributable to Safehold Inc. common shareholders - basic Basic (dollars per share) Earnings Per Share, Diluted Net income (loss) attributable to Safehold Inc. common shareholders - diluted Diluted (dollars per shares) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average number of common shares: Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding for basic earnings (in shares) Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted average common shares outstanding for diluted earnings per common share (in shares) Diluted (in shares) Related Party Transaction [Axis] Related Party Transaction [Domain] Contractual agreement in which management services are provided to another party. Management Fee Arrangement [Member] Management fees Income related to ground leases with iStar Inc.. Ground Leases with iStar Inc [Member] Ground Leases with iStar Expenses with Related Party, Equity Based Compensation Expenses with Related Party, Equity Based Compensation Expenses with Related Party, Equity Based Compensation Statement of Comprehensive Income Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Reclassification of (gains) losses on derivatives into earnings Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Earnings Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Unrealized gain (loss) on derivatives Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss): Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) attributable to Safehold Inc. The amount of other income recognized due to a hedge forecasted for permanent debt that did not occur. Other Income Recognized Due To Hedge Forecasted For Permanent Debt That Did Not Occur Other income recognized from derivative transaction (refer to Note 11) Other income recognized due to hedge forecasted for permanent debt that did not occur Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Component [Domain] Common Stock Common Stock Additional Paid-In Capital Additional Paid-In Capital Retained Earnings Retained Earnings / Accumulated (Deficit) Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) Noncontrolling Interests Noncontrolling Interests Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment Increase (Decrease) in Temporary Equity [Roll Forward] Temporary Equity, Net Income Net income (loss) Value of Caret Units, classified as temporary equity, issued during the period. Temporary Equity, Caret Units Issued During Period, Value Contributions from noncontrolling interests Decrease in noncontrolling interest balance attributable to temporary equity interest from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. Temporary Equity, Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to noncontrolling interests Decrease in redeemable noncontrolling interest from redemption or purchase of the interests of the noncontrolling shareholders. Redeemable Noncontrolling Interest, Decrease From Redemptions Redemption of noncontrolling interests Temporary Equity, Carrying Amount, Period Increase (Decrease) Additional paid in capital attributable to redeemable noncontrolling interests Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Net income (loss) Value of stock related to restricted stocks awards issued during the period and the amortization of restricted stock units and other restricted stock activity. Issuance of Stock and Restricted Stock Unit Amortization Net Issuance of common stock, net / amortization Dividends. Dividends declared Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Change in accumulated other comprehensive income (loss) Noncontrolling Interest, Increase from Subsidiary Equity Issuance Contributions from noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Acquisition of noncontrolling interest Amount of decrease in additional paid in capital (APIC) related to noncontrolling interests. Adjustments to Additional Paid in Capital, Noncontrolling Interests Additional paid in capital attributable to noncontrolling interests Stock Issued During Period, Value, Acquisitions Merger consideration (refer to Note 1 and Note 3) Common Stock, Dividends, Per Share, Declared Dividends declared, per share (usd per share) Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to cash flows from operating activities: Share-based Payment Arrangement, Noncash Expense Stock-based compensation expense Straight Line Rent Deferred operating lease income Non-Cash Interest Income from Sales-type Leases. Non-Cash Interest Income from Sales-type Leases Non-cash interest income from sales-type leases Amount of interest expense pertaining to the non-cash accretion on unsecured note balances. Interest Expense, Noncash Accretion Non-cash interest expense Amortization of above and below Market Leases Amortization of real estate-related intangibles, net Proceeds from Equity Method Investment, Distribution Distributions from operations of equity method investments Amortization of Debt Issuance Costs and Discounts Amortization of premium, discount and deferred financing costs on debt obligations, net Management Fee Expense Non-cash management fees Management fees Other Operating Activities, Cash Flow Statement Other operating activities Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Changes in assets and liabilities: Increase (Decrease) in Prepaid Expense and Other Assets Changes in deferred expenses and other assets, net Increase (Decrease) in Accounts Payable and Accrued Liabilities Changes in accounts payable, accrued expenses and other liabilities Net Cash Provided by (Used in) Operating Activities Cash flows provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Real Estate Acquisitions of real estate Payments to Originate/Acquire Sales-Type Leases Payments to Originate/Acquire Sales-Type Lease Origination/acquisition of net investment in sales-type leases and Ground Lease receivables Payments to Acquire Notes Receivable Origination of loans receivable, net Payments to Acquire Businesses, Gross Payment for merger consideration Cash consideration paid by the Company to iStar Cash Acquired from Acquisition Cash and cash equivalents acquired upon merger Payments to Acquire Equity Method Investments Contributions to equity method investments Proceeds from Equity Method Investment, Distribution, Return of Capital Distributions from equity method investments Proceeds (Fundings) on Ground Lease receivables net of disbursements Proceeds (Fundings) on Ground Lease Receivables Funding reserves received from Ground Lease tenant net of disbursements Proceeds from Leases Held-for-investment Net proceeds from sale of Ground Leases Amount of cash inflow from return of cash collateral related to certain debt obligations. Return of Funding of Collateral on Debt Return of cash collateral for debt obligations Amount of cash outflow for funding of temporary replacement collateral in a pool that has asset substitution rights related to certain debt obligations. Payments For Funding of Temporary Collateral on Debt Funding of cash collateral for debt obligations Proceeds from Sale, Real Estate, Held-for-Investment Net proceeds received from sale of real estate available and held for sale Cash inflow related to the return of deposits given in advance to show or confirm an intention to complete an investment in Ground Leases. Return of Deposits on Ground Lease Investments Return of deposits on Ground Lease investments Payments for Derivative Instrument, Investing Activities Payments to acquire derivative transactions Proceeds from Derivative Instrument, Investing Activities Proceeds received from derivative transactions The cash inflow provided by the settlement of terminated derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments. Proceeds From Settlement of Terminated Derivatives, Investing Activities Proceeds received from the settlement of derivative transactions Payments for (Proceeds from) Other Investing Activities Other investing activities Net Cash Provided by (Used in) Investing Activities Cash flows provided by (used in) investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Proceeds from Issuance of Long-term Debt Proceeds from debt obligations