CHF Switzerland, Francs Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Commercial and Residential Lending Segment Commercial and Residential Lending Segment Commercial And Residential Lending Segment [Member] This member stands for commercial and residential lending segment. Investment Securities Investment, Policy [Policy Text Block] Schedule of Investments in Available-for-Sale RMBS Debt Securities, Available-for-Sale [Table Text Block] Starwood 2024-SIF4 Collateralized Loan Obligations, Starwood 2024-SIF4 [Member] Collateralized Loan Obligations, Starwood 2024-SIF4 Constant default rate Measurement Input, Default Rate [Member] Award Timing Predetermined Award Timing Predetermined [Flag] Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Entity File Number Entity File Number Acquisition Off-Market Lease, Unfavorable, Acquired Off-Market Lease, Unfavorable, Acquired Additional Paid-in Capital Additional Paid-in Capital [Member] Loan payable, payment deferral term Loan Payable, Payment Deferral Term Loan Payable, Payment Deferral Term Funded Commitments Funded Loan Commitments [Member] This member stands for funded loan commitments. 2028 Senior Notes Senior Notes Due 2028 [Member] Senior Notes Due 2028 Tabular List, Table Tabular List [Table Text Block] Percentage of commercial loans amortized cost basis Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Modified, Percentage Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Modified, Percentage Changes in fair value due to changes in inputs and assumptions Off Market Lease Unfavorable, Adjustments For Change in Inputs and Assumptions Off Market Lease Unfavorable, Adjustments For Change in Inputs and Assumptions Purchase price Measurement Input Purchase Price [Member] Measurement input using purchase price. Recent Accounting Developments New Accounting Pronouncements, Policy [Policy Text Block] Charge-offs Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff July 2030 Senior Notes Senior Notes Due July 2030 [Member] Senior Notes Due July 2030 SOFR Secured Overnight Financing Rate (SOFR) [Member] Schedule of Fair Value of Financial Instruments not Carried at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Goodwill [Line Items] Goodwill [Line Items] Position [Axis] Position [Axis] Measurement Basis [Axis] Measurement Basis [Axis] Adjustment to Compensation: Adjustment to Compensation [Axis] FICO score Measurement Input Fico Score [Member] Measurement input using FICO score. Amount at risk Repurchase Agreement Counterparty, Amount at Risk Related-Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Change in fair value of mortgage loans, net Change in fair value of loans Changes in fair value Gain (Loss) on Mortgage Loans Held For Sale Represents the net change in the difference between the fair value and the carrying value, or in the comparative fair values, of loans made to finance real estate acquisitions during the reporting period. Payments for purchase or termination of derivatives Payments For Purchase or Termination of Derivatives Payments for purchase or termination of derivatives Number of data center facilities Number Of Data Center Facilities Number Of Data Center Facilities CMBS Venture Holdings Corporate Joint Venture [Member] Investor entity which owns equity in an online real estate company Real Estate Brokerage Services Provider [Member] Represents information pertaining to real estate brokerage services provider. Proceeds from employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Interest rate caps Interest Rate Cap [Member] Area of property (in sqft) Area of Real Estate Property Adjustment to Compensation, Amount Adjustment to Compensation Amount Other assets Increase (Decrease) in Other Operating Assets Basis of Accounting and Principles of Consolidation Consolidation, Policy [Policy Text Block] Distributions of cash from consolidated VIEs Proceeds from Contributions from Affiliates Uncommitted amount Line of Credit Facility, Uncommitted Amount Line of Credit Facility, Uncommitted Amount Employee Stock Option Share-Based Payment Arrangement, Option [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Loans held-for-investment, net of credit loss allowances of $397,695 and $440,842 Loans held-for-investment Loans Financing Receivable, after Allowance for Credit Loss Reconciliation of statutory tax rate to effective tax rate Effective Income Tax Rate Reconciliation, Percent [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Total Starwood Property Trust, Inc. Stockholders’ Equity Equity, Attributable to Parent Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Other comprehensive income (loss) (net change by component): Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Total Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date Schedule of Collateralized Loan Obligations Collateralized Loan Obligations [Table Text Block] Tabular disclosure for collateralized loan obligations. Common stock, shares authorized (in shares) Common Stock, Shares Authorized Commercial Loans Loans Held For Sale Commercial [Member] Represents the information pertaining to commercial loans which are held for sale. Financial assets not carried at fair value: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Pro rata share owned by a non-controlling partner in a consolidated joint venture Pro Rata Share Owed By Noncontrolling Partner In Joint Venture Pro rata share owned by a non-controlling partner in a consolidated joint venture. STWD 2021-FL2 Collateralized Loan Obligations, STWD 2021-FL2 [Member] Collateralized Loan Obligations, STWD 2021-FL2 Amortized Cost Available for sale Securities Amortized Cost before Other than Temporary Impairment Represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor as trading before the adjustments for other-than-temporary impairments are recognized in earnings. Liabilities and Equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Conditional extension term Loan Payable, Conditional Extension Term Loan Payable, Conditional Extension Term Loss on extinguishment of debt, net Gain (Loss) On Extinguishment Of Debt, Including Non-Cash Fees Gain (Loss) On Extinguishment Of Debt, Including Non-Cash Fees Maximum Maximum [Member] Capitalized interest Mortgage Loans on Real Estate Capitalized, Interest Total amount of interest capitalized on mortgage loans on real estate during the reporting period. Net income attributable to non-controlling interests Net income (loss) attributable to non-controlling interests Net (income) loss attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Diluted earnings Income (Loss) from Continuing Operations Diluted Amount of income (loss) from continuing operations attributable to the parent, used in calculating diluted EPS. Schedule of Quantitative Information for Level 3 Measurements for Assets and Liabilities Measured at Fair Value on Recurring Basis Fair Value Inputs Assets (Liabilities) Quantitative Information [Table Text Block] Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets and liabilities. This disclosure may include, but is not limited to, the fair value of the assets and liabilities, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. Total Finite-Lived Intangible Assets, Net Restricted Stock Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Secured Borrowings Debt Instrument [Line Items] Unsecured Senior Notes Debt Instrument [Line Items] VIE liabilities duration ​Variable Interest Entity Liabilities, Duration ​Variable Interest Entity Liabilities, Duration Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Changes in Financial Assets and Liabilities Classified as Level III Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Table Text Block] Tabular disclosure of the fair value measurement of assets and liabilities using significant unobservable inputs (level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues and settlements (each type disclosed separately); and (3) transfers in and transfers out of level 3 (for example, transfers due to changes in the observability of significant inputs) by class of asset and liability. Schedule of Activity in Loan Portfolio Movement in Mortgage Loans on Real Estate [Table Text Block] Tabular disclosure of the changes in Mortgage Loans on Real Estate for the period. Schedule of Non-Vested Shares and Share Equivalents Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Derivative Swap Period [Axis] Derivative Swap Period [Axis] Derivative Swap Period Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Net Fair Value Adjustment Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax External Credit Rating, Standard & Poor's [Domain] External Credit Rating, Standard & Poor's [Domain] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Equity interest in a retail center in Hawaii Equity Interest In a Retail Center [Member] Equity Interest In a Retail Center Number of loans modified Financing Receivable, Modified, Number Of Loans Financing Receivable, Modified, Number Of Loans Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Borrowing Base Facility Revolving Secured Financing [Member] Represents information related to revolving secured financing. Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Variable rate loans held-for-investment Loans Receivable with Variable Rates of Interest [Abstract] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating segment Operating Segments [Member] Interest income from investment securities Interest Income, Securities, Mortgage-Backed Less: Comprehensive income attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Interest expense Interest Expense, Operating Less than one year Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Income attributable to STWD common stockholders Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Distributions to non-controlling interests Payments to Noncontrolling Interests TEXAS TEXAS Unpaid principal balance of investment securities before consolidation of VIEs Investment Securities Unpaid Principal Balance before Consolidation of Variable Interest Entities Represents the unpaid principal balance of the investment securities before consolidation of the VIEs. B- Rating Standard & Poor's, B- Rating [Member] Document Fiscal Period Focus Document Fiscal Period Focus Fair value of derivative instruments Derivatives, Fair Value [Line Items] Class A Units Class A Units [Member] Represents information pertaining to ClassA Units. Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Number of units outstanding (in shares) Number Of Units Outstanding The number of units outstanding as of the reporting date. Certain Facilities Certain Facility [Member] Represents the information pertaining to certain facility. Value of loans with future funding commitments Loans with Future Funding Commitments, Value Represents the value of loans with future funding commitments. Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol Business Combinations Business Combination [Policy Text Block] Included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Attributable To Assets Still Held At End Of Period Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input, still held at the end of period . Line of credit capacity if conditions are met Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases, Accordion Feature Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases, Accordion Feature Share-based compensation (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Restricted stock units Restricted Stock Units (RSUs) [Member] Total Debt Instrument Carrying Amount Including Collateralized Loan Obligations Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, including collateralized loan obligations. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Summary of CLO Collateralized Financings [Abstract] Principal amount of notes purchased by third-party investors Debt Instrument Face Amount Purchased By Third Party Investors Face (par) amount of debt instrument at time of issuance purchased by third part investors. Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Reverse Interest Rate Swap Reverse Interest Rate Swap [Member] Reverse Interest Rate Swap Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Allowance for credit loss to date Debt Securities, Held-To-Maturity, Allowance For Credit Loss To Date Debt Securities, Held-To-Maturity, Allowance For Credit Loss To Date Entity Emerging Growth Company Entity Emerging Growth Company 2029 Long-Term Debt, Maturity, Year Three Right to receive additional shares (in shares) Business Acquisition Equity Interests Issuable Upon Contingent Consideration Number of Shares Number of shares of equity interests issuable upon contingent consideration in business acquisition. Schedule of Investments in HTM Securities Debt Securities, Held-to-Maturity [Table Text Block] Gain on sale of investments and other assets, net Gain on Sale of Investments Cash Flow Represents the net gains of sales of various types of investments including securities and other assets. Derivative liabilities, Gross Amounts Not Offset in the Statements of Financial Position, Cash Collateral Received/Pledged Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Unfunded commitments Unfunded Loan Commitment [Member] Deferred financing costs, net of amortization Unamortized deferred financing costs Debt Issuance Costs, Net Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] No definition available. Accretion of net deferred loan fees and discounts Accretion of Net Deferred Loan Fees and Discounts Represents the accretion of net deferred loan fees and discounts. Restricted cash Restricted Cash and Cash Equivalent Servicing rights intangibles Indefinite-Lived Intangible Assets (Excluding Goodwill) Change in fair value / gain on sale Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Gain (Loss) Included in Change in Fair Value This item represents the amount of the total realized and unrealized gains or losses for the period which are included in the statement of income (or changes in net assets) in change in fair value; the fair value of which assets was or is measured on a recurring basis using significant unobservable inputs (Level 3). In-place lease intangible assets In-place Lease Intangible Assets Leases, Acquired-in-Place [Member] Effect of dilutive securities - Contingently issuable shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Commercial, fair value option Commercial Mortgage Backed Securities Fair Value Option [Member] Represents information pertaining to commercial mortgage backed securities which are elected as fair value option. Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Original Amount [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Original Amount [Axis] Schedule of Investment Securities Marketable Securities [Table Text Block] Gross Unrealized Holding Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Grant Date Fair Value Share-based Compensation, Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Total Fair Value The total fair value of equity-based awards granted during the period. Number of states Asset Acquisition, Number Of States Entity Operates In Asset Acquisition, Number Of States Entity Operates In Intangible Liabilities [Roll Forward] Intangible Liabilities [Roll Forward] Intangible Liabilities Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Net accretion Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Accretion (Amortization) Of Discounts And Premiums Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Accretion (Amortization) Of Discounts And Premiums Number of shares issued for future grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Credit loss (reversal) provision, net Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase Number of securities with unrealized losses Number Of Securities with Unrealized Losses Number of securities with unrealized losses. Non-Credit Deterioration Financial Asset Acquired and No Credit Deterioration [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Portion of securities with variable rate Investment Securities, Variable Rate Amount Represents the amount of investment securities bearing variable interest rates. Schedule of Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Accounts payable, accrued expenses and other liabilities Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Office Lease Agreement with Affiliate of Chairman and CEO Office Lease Agreement With Affiliate Of Chairman And Ceo [Member] Represents the information pertaining to office lease agreement with affiliate of the chairman and CEO. Non-Vested Shares and Share Equivalents activity Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Effective Rate Debt Instrument, Interest Rate, Effective Percentage Pledged Status [Domain] Pledged Status [Domain] Multifamily Conversion Property Multifamily Conversion Property [Member] Multifamily Conversion Property Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Period of average closing market price of common stock as a basis for debt conversion Debt Instrument Period of Average Closing Market Price as Basis for Debt Conversion Debt Instrument Period of Average Closing Market Price as Basis for Debt Conversion Woodstar Feeder Fund, L.P. Woodstar Feeder Fund, L.P. [Member] Woodstar Feeder Fund, L.P. Income tax benefit (provision) Effective tax rate Income tax benefit (provision) Income Tax Expense (Benefit) 49% Origination Loan Construction Of Data Center In Herndon, 49% Origination Loan [Member] Construction Of Data Center In Herndon, 49% Origination Loan Domestic servicing rights, at fair value Domestic servicing rights Domestic Servicing Rights [Member] Represents information pertaining to domestic servicing rights. Pricing margin (as a percent) Weighted Average Rate Debt Instrument, Basis Spread on Variable Rate Other assets Other assets Other assets Other Assets Balance at the beginning of the period Balance at the end of the period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Unamortized discount—Convertible Notes Convertible Notes Payable [Member] Credit Rating, Standard & Poor's [Axis] Credit Rating, Standard & Poor's [Axis] Domestic servicing rights Servicing Asset, Measurement Input Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Unsecured senior notes, net Unsecured Debt Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Offsetting [Abstract] Offsetting [Abstract] ABS, FI Series 2023-1 Asset Backed Security, FI Series 2023-1 [Member] Asset Backed Security, FI Series 2023-1 Land and land improvements, Depreciable Life Real Estate Investment Land Improvements Useful Life Useful life of real estate investment in land improvements. Horizontal Risk Retention Certificates Horizontal Risk Retention Certificates [Member] Horizontal Risk Retention Certificates Building and building improvements, Depreciable Life Real Estate Investment Building And Building Improvements Useful Life Useful life of real estate investment in buildings and building improvements, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Minimum trading period as a basis for debt conversion Debt Instrument Minimum Trading Period As A Basis For Debt Conversion Debt Instrument Minimum Trading Period As A Basis For Debt Conversion Woodstar I Portfolio Woodstar I Portfolio [Member] Represent information related to Woodstar I Portfolio Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Conversion of stock ratio Business Acquisition, Equity Interests Issuable, Conversion Of Stock Ratio Business Acquisition, Equity Interests Issuable, Conversion Of Stock Ratio Senior Mortgage Loan Senior Mortgage Loan [Member] Senior Mortgage Loan Acquisitions and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] REIT and other non-taxable income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Other revenues Noninterest Income, Other Operating Income Balance at the beginning of the period (in shares) Balance at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Number of commercial lending preferred interests Number Of Commercial Lending Preferred Interests Number Of Commercial Lending Preferred Interests Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Initial term Debt Instrument, Term Thereafter Held-to-maturity Securities, Debt Maturities, after Five Years, Net Carrying Amount Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing after the fifth fiscal year following the latest fiscal year. Mezzanine Loans Mezzanine Loan [Member] A mortgage loan secured by the equity of a company owning real property. Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] VIE Liabilities Variable Interest Entity Liabilities [Member] Represents information pertaining to Variable Interest Entity's (VIE) liabilities. Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Gross Amounts Recognized Derivative Liability, Subject to Master Netting Arrangement, before Offset 2026 (remainder of) Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Diluted Earnings Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Collateralized Loan Obligations, Starwood 2026-SIF7 Collateralized Loan Obligations, Starwood 2026-SIF7 [Member] Collateralized Loan Obligations, Starwood 2026-SIF7 Sales Off Market Lease Unfavorable, Sold Off Market Lease Unfavorable, Sold Term Loans and Revolver Term Loan And Revolver [Member] Represents information pertaining to term loan and revolver. Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Real Estate Properties [Line Items] Real Estate Properties [Line Items] Changes in fair value due to changes in inputs and assumptions Indefinite Lived Intangible Assets Adjustments for Change in Inputs and Assumptions Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance due to change in inputs and assumptions used to determine fair value. Shared Services Agreement Shared Services Agreement [Member] Shared Services Agreement Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Starwood Property Trust, Inc. Equity Plan and Manager Equity Plan Starwood Property Trust Inc Equity Plan And Manager Equity Plan [Member] Represents information pertaining to the Starwood Property Trust, Inc. Equity Plan and Manager Equity Plan providing for the issuance of restricted stock or restricted stock units to the entity's employees and manager as a form of incentive compensation. Number of reportable business segments Number of Reportable Segments Loans payable Loans Payable Measurement Period Adjustments Scenario, Adjustment [Member] Unamortized net discount Debt Instrument, Unamortized Discount (Premium), Net Conversion upon satisfaction of trading price condition Trading Price Condition [Member] Trading Price Condition Variable Interest Entities Variable Interest Entity Disclosure [Text Block] Entity Address, State or Province Entity Address, State or Province Financial Asset, Period Past Due [Domain] Financial Asset, Aging [Domain] Dividends declared Dividends, Common Stock LTV 60% - 70% Rating2 [Member] Internally assigned credit rating 2, representing the second-to-lowest risk category. EUR Euro Member Countries, Euro Amount outstanding on repurchase facility Amount Outstanding On Repurchase Facility The amount outstanding on a repurchase facility Joint Venture Partner Joint Venture Partner [Member] Represents information pertaining to joint venture partner. Face Amount Loans held-for-sale face amount Loans Held for Sale Sold Par Value Represents the par value of loans held-for-sale, sold during the period. Purchaser Purchaser [Member] Purchaser Individual: Individual [Axis] Transfers out of Level III Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Net Discount rate - properties Measurement Input, Discount Rate, Properties [Member] Measurement Input, Discount Rate, Properties Payment of dividends Payments of Ordinary Dividends, Common Stock Unrealized change in fair value of investments Unrealized Gain (Loss) On Change In Fair Value Of Investments, Other Unrealized Gain (Loss) On Change In Fair Value Of Investments, Other Included in earnings Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Gain (Loss) Included in Earnings Attributable to Assets Still Held at End of Period Amount of gain (loss) recognized on the income statement for a financial instrument classified as an asset measured using unobservable inputs, still held at the end of the period. Loan payable, payment deferral interest rate Loan Payable, Payment Deferral Interest Rate Loan Payable, Payment Deferral Interest Rate LTV > 70% Rating3 [Member] Internally assigned credit rating 3, representing the middle risk category. Contributions from non-controlling interests Proceeds from Noncontrolling Interests Maximum risk of loss related to VIEs, on fair value basis Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Number of affordable housing units in portfolio Number Of Affordable Housing Units In Portfolio Number Of Affordable Housing Units In Portfolio Principal repayments on and repurchases of borrowings Repayments of Long-Term Debt 2023 Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year Entity Interactive Data Current Entity Interactive Data Current Loans held for investment Held-for-Investment Loans Loans Held For Investment [Member] Represents the loans receivable held for investment. Proceeds from termination of derivatives Proceeds from Derivative Instrument, Investing Activities Construction of Luxury Condominium Project Construction Of Luxury Condominium Project [Member] Construction Of Luxury Condominium Project Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] HTM Securities Held-to-Maturity Securities [Member] Equity security Marketable Securities Schedule of Results of Operations by Business Segment Schedule of Segment Reporting Information of Results of Operations by Segment [Table Text Block] Tabular disclosure of the results of operations for each reportable segment. 2026 Financing Receivable, Year One, Originated, Current Fiscal Year Ownership [Domain] Ownership [Domain] October 2030 Senior Notes Senior Notes Due October 2030 [Member] Senior Notes Due October 2030 Grant date values Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period Total Fair Value Fair value of share-based awards granted in the period for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. Entity Central Index Key Entity Central Index Key PEO Name PEO Name Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Value of loans placed on nonaccrual Financing Receivable, Amount Placed On Nonaccrual During Period Financing Receivable, Amount Placed On Nonaccrual During Period Schedule of Five-Year Principal Repayments for Secured Financings Schedule of Maturities of Long-Term Debt [Table Text Block] Total revenues Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair value of financial instruments not carried at fair value Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Unpaid incentive fee Related Party Incentive Fee Earned Payable Represents incentive fees payable to related party. STWD 2025-FL4 Collateralized Loan Obligations, STWD 2025-FL4 [Member] Collateralized Loan Obligations, STWD 2025-FL4 Schedule of Risk Ratings by Class of Loan Financing Receivable Credit Quality Indicators [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Infrastructure Lending Segment Infrastructure Lending Segment [Member] Represents information pertaining to infrastructure lending segment. Origination and purchase of loans held-for-sale, net of principal collections Payment for Origination, Loan, Mortgage, Held-for-Sale Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] 2031 Senior Notes Senior Notes Due 2031 [Member] Senior Notes Due 2031 Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Fair Value Financial Instruments Disclosure [Text Block] Assets Sold under Agreements to Repurchase, Type [Domain] Assets Sold under Agreements to Repurchase, Type [Domain] Schedule of Fair Value of Derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Activity in loan portfolio SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Subsequent Event Type [Axis] Subsequent Event Type [Axis] Development and Recapitalization of Luxury Rental Cabins Development And Recapitalization Of Luxury Rental Cabins [Member] Development And Recapitalization Of Luxury Rental Cabins Long Long [Member] Unamortized deferred financing costs Debt Issuance Cost, Gross, Noncurrent Infrastructure loans First Priority Infrastructure Receivables [Member] Represents information pertaining to first priority infrastructure receivables. Debt Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Debt Amount of debt as of the reporting date. Nonrelated Party Nonrelated Party [Member] 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Three Weighted average maturity period (in years) Line Of Credit Facility, Increase In Weighted Average Maturity Line Of Credit Facility, Weighted Average Maturity Rent payments Payments for Rent Decrease in interest rate Loans Payable, Interest Rate Increase (Decrease) Loans Payable, Interest Rate Increase (Decrease) Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Beginning balance Ending balance Temporary equity Temporary Equity, Including Noncontrolling Interest Entity Address, Address Line Two Entity Address, Address Line Two Loans Held-For-Sale Financing Receivable, Held-for-Sale [Policy Text Block] Loan Securitization/Sale Activities Loan Securitization/Sale Activities Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Investments [Domain] Investments [Domain] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Temporary Equity: Redeemable non-controlling interests Redeemable Noncontrolling Interest, Equity, Carrying Amount STWD 2021-HTS Collateralized Loan Obligations, STWD 2021-HTS [Member] Collateralized Loan Obligations, STWD 2021-HTS Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Amount funded Debt Instrument, Face Amount, Amount Funded Debt Instrument, Face Amount, Amount Funded Ownership [Axis] Ownership [Axis] Percentage of repurchase agreements for which margin calls are limited to collateral specific credit marks Percentage Of Repurchase Agreements For Which Margin Calls Are Limited To Collateral Specific Credit Marks Represents the percentage of repurchase agreements which do not permit valuation adjustments based on capital markets activity. Margin calls on these facilities are limited to collateral-specific credit marks. Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Derivatives and Hedging Activity Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Change in fair value of consolidated VIEs Change in Fair Value of Consolidated Variable Interest Entity Represents changes in fair value of consolidated VIEs during the reporting period. Gross Carrying Value Off-Market Lease, Unfavorable, Gross Off-Market Lease, Unfavorable, Gross Area of property acquired (in sqft) Asset Acquisition, Area Of Acquired Properties Asset Acquisition, Area Of Acquired Properties Lease Intangibles Lease Intangibles [Policy Text Block] Lease Intangibles Fair value of mortgage backed securities Debt Security, Mortgage-Backed, Available-for-Sale, Fair Value Disclosure Property Management Services Property Management Services [Member] Property Management Services Granted (in shares) Amount Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Purchase and funding of investment securities Payments to Acquire Investments Total costs and expenses Costs and Expenses Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Related-Party Transactions Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Securities with a loss less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Debt fair value Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 264-Unit Multifamily Affordable Housing Community 264-Unit Multifamily Affordable Housing Community [Member] 264-Unit Multifamily Affordable Housing Community Subordinated Mortgages Second Mortgage [Member] Counterparty Name [Domain] Counterparty Name [Domain] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] VIE liabilities Variable Interest Entity Liabilities, Measurement Input Variable Interest Entity Liabilities, Measurement Input Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Schedule of Investments in Unconsolidated Entities Investments in and Advances to Affiliates [Table Text Block] Cash acquired in foreclosure Proceeds From Foreclosures And Initial Consolidation Of Entities Proceeds From Foreclosures And Initial Consolidation Of Entities Loans payable, basis spread Loans Payable, Basis Spread Loans Payable, Basis Spread Investment Type [Axis] Investment Type [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Interest income from loans Interest and Fee Income, Loans, Commercial Non-PEO NEO Non-PEO NEO [Member] Credit Loss Allowance Debt Securities, Available-for-Sale, Allowance for Credit Loss Securities or Other Assets Sold under Agreements to Repurchase [Axis] Securities or Other Assets Sold under Agreements to Repurchase [Axis] Proceeds from employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Position [Domain] Position [Domain] 2029 Off-Market Lease, Unfavorable, Expected Amortization, Year Three Off-Market Lease, Unfavorable, Expected Amortization, Year Three Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) [Line Items] Sale of Stock [Axis] Sale of Stock [Axis] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Allowance for credit losses Credit loss allowances: Credit Loss Allowance Credit loss allowance at beginning of the period Credit loss allowance at the end of the period Financing Receivable, Allowance for Credit Loss Equity Award [Domain] Award Type [Domain] Non-controlling interests in consolidated subsidiaries Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Compensation Amount Outstanding Recovery Compensation Amount Intangible Assets, Net (Excluding Goodwill) [Roll Forward] Intangible Assets, Net (Excluding Goodwill) [Roll Forward] Intangible Assets, Net (Excluding Goodwill) Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Properties Real Estate Disclosure [Text Block] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Floor interest rate (as a percent) Debt Instrument, Floor On Variable Rate Represents the minimum interest rate applicable to various debt instruments. MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Changes in AOCI by component AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Number of Shares: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Employee Stock Employee Stock [Member] Commercial Financing Facilities Commercial Financing Facility [Member] Represents the information pertaining to commercial financing facility. Revenues: Revenues [Abstract] Percentage of payments offset Derivative, Percentage Of Payments Offset Derivative, Percentage Of Payments Offset Assets: Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract] 2027 Off-Market Lease, Unfavorable, Expected Amortization, Year One Off-Market Lease, Unfavorable, Expected Amortization, Year One Weighted Average Life (in years) Mortgage Loans on Real Estate, Weighted Average Life Represents the weighted average duration of a group of mortgage loan receivables. Accumulated other comprehensive income Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Management fee expense Related Party, Base Management Fee, Expense Represents the base management fees incurred, as contractually stipulated, for the operation and management of the entity's business during the reporting period. 2027 Long-Term Debt, Maturity, Year One Number of equity interests in unconsolidated commercial real estate properties acquired Number Of Equity Interests In Unconsolidated Commercial Real Estate Properties Acquired The number of equity interests in unconsolidated commercial real estate properties. Financial Instruments [Domain] Financial Instruments [Domain] Available-for-sale securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Purchases / Originations Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Schedule of Effect of Derivative Financial Instruments Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Second Revolving Warehouse Credit Facility Second Revolving Warehouse Credit Facility [Member] Second Revolving Warehouse Credit Facility Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] WAL (Years) Investment Securities, Weighted Average Life Represents the weighted average life of investment securities. Fair Value Option Fair Value Option [Policy Text Block] Disclosure of an entity's accounting policy for the election to apply the fair value option for measurement and reporting of eligible financial assets and liabilities (as defined), as well as certain other eligible items (as defined) included in the statement of financial position, whether such option is elected for a single eligible item or a group of similar eligible items and is in addition to other disclosures concerning fair value which the company may be required to provide. Loan Funding Commitments Loan Funding Commitments [Member] Loan Funding Commitments Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Minimum Minimum [Member] Security deposit Security Deposit Convertible notes carrying value Convertible Debt Number of cross-collateralized facilities Mortgage Loans On Real Estate, Number Of Cross-Collateralized Facilities Mortgage Loans On Real Estate, Number Of Cross-Collateralized Facilities Company Selected Measure Name Company Selected Measure Name Loan foreclosures including previously accrued interest Mortgage Loans On Real Estate, Loan Foreclosure And Converted To Equity Control Interest During Period, Including Previously Accrued Interest Mortgage Loans On Real Estate, Loan Foreclosure And Converted To Equity Control Interest During Period, Including Previously Accrued Interest Fair Value Measurement [Domain] Fair Value Measurement [Domain] Construction Loan Services Contract Construction Loan Services Contract [Member] Construction Loan Services Contract Secured Borrowings Unsecured Senior Notes Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Dividends payable Dividends Payable Collateral Held [Domain] Collateral Held [Domain] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Number of properties sold Number Of Real Estate Properties Sold Number Of Real Estate Properties Sold Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Offsetting Assets and Liabilities Offsetting Assets and Liabilities [Text Block] Entire disclosure of information about derivative and financial assets and liabilities that are subject to offsetting, including enforceable master netting arrangements. Diluted - Average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Liabilities, Gross Amounts Not Offset in the Statements of Financial Position, Financial Instruments Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] HTM Preferred Intrests Unfunded Loan Commitment, Held-to-Maturity Preferred Interests [Member] Unfunded Loan Commitment, Held-to-Maturity Preferred Interests Furniture & fixtures Furniture and Fixtures, Gross Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] HTM preferred equity interests Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] Interest rate swaps – Receiving fixed rates Interest Rate Swap Receiving Fixed Rates [Member] Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. The entity is receiving fixes rates. Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Increase in borrowing capacity Line of Credit Facility, Increase In Borrowing Capacity Line of Credit Facility, Increase In Borrowing Capacity Not 90 days or greater past due Financial Asset, Less Than 90 Days Past Due [Member] Financial Asset, Less Than 90 Days Past Due Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Remaining Period of Amortization Debt Instrument, Remaining Discount Amortization Period Debt Instrument, Remaining Discount Amortization Period Number of acquired properties closed Number Of Properties In Portfolio Investment Closed Represents the number of properties acquired that closed during the reporting period. Schedule of Activity in Credit Loss Allowance for HTM Debt Securities Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] Loan Purchase Commitments Loan Purchase Commitments [Member] Income Taxes Income Tax Disclosure [Text Block] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Gross Amounts Offset in the Statement of Financial Position Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Asset Offset MED 2024-MOB MED 2024-MOB [Member] MED 2024-MOB Liabilities, Gross Amounts Not Offset in the Statements of Financial Position, Cash Collateral Received/Pledged Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Total net derivative assets Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Total Permanent Equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Convertible notes fair value Convertible Debt, Fair Value Disclosures First Mortgage First mortgage loan participation First Mortgage [Member] Value of loans with future funding commitments expected to fund Loans With Future Funding Commitments Value Expected To Fund Represents the value of loans with future funding commitments expected to fund. Executive compensation expense Related Party Executive Compensation Expense and Other Reimbursable Expenses Incurred Represents the executive compensation expense and other reimbursable expenses incurred by the related party during the period. Document Type Document Type Level III Fair Value, Inputs, Level 3 [Member] Earnings per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Asset Acquisition [Domain] Asset Acquisition [Domain] Schedule of Face Amount and Proceeds of Loans Schedule Of Fair Value And Par Value Of Loans Sold And Sales Proceeds Used To Repay Outstanding Balance Of Repurchase Agreements [Table Text Block] Tabular disclosure of the fair value and par value of loans sold from the conduit platform, as well as the amount of sale proceeds used in part to repay the outstanding balance of the repurchase agreements associated with the loans. Woodstar Fund investments Housing Fund Investment, Fair Value Disclosure Housing Fund Investment, Fair Value Disclosure Construction Funding Commitments Construction Funding Commitments [Member] Construction Funding Commitments Proceeds from sale of loans held-for-sale Proceeds from Sale, Loan, Held-for-Sale Acquisition Finite-Lived Intangible Assets Acquired Fair value of investment securities before consolidation of VIEs eliminated against VIE liabilities Investment Securities Fair Value Before Consolidation Of Variable Interest Entities Eliminated Against Variable Interest Entities Liabilities Represents the fair value balance of the investment securities before consolidation of the VIEs that is eliminated against VIE liabilities. Statistical Measurement [Axis] Statistical Measurement [Axis] Change in fair value of servicing rights Fair Value of Service Rights Gain Loss Represents the fair value of servicing rights gain or loss for the period. Authorized repurchase of common stock Share Repurchase Program, Authorized, Amount Basic - Average shares outstanding (in shares) Weighted Average Number of Shares Issued, Basic Quantitative information for Level 3 Fair Value Measurements for assets and liabilities measured at fair value on recurring basis Fair Value Measurement Inputs and Valuation Techniques [Line Items] Number of tenants Asset Acquisition, Number Of Tenants Asset Acquisition, Number Of Tenants Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Number of natural gas power plant Number Of Natural Gas Power Plants Number Of Natural Gas Power Plants Foreign currency loss (gain), net Foreign Currency Transaction Gain (Loss) before Tax Cash Flow Impact The noncash impact of the amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized during the period. Antidilutive securities and effect of dilutive securities Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Interest rate swaps – Paying fixed rates Interest Rate Swap Paying Fixed Rates [Member] Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. The entity is paying fixes rates. Number of extension options Noncontrolling Interest, Sale of Investment Interest, Number Of Extension Options Noncontrolling Interest, Sale of Investment Interest, Number Of Extension Options Permitted reinvestment under static investment in VIEs Permitted Reinvestment under Static Investment in Variable Interest Entity Represents the permitted reinvestment amount in the Variable Interest Entities (VIE) in which the entity has invested and the investment is static. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] VIE duration (in years) Derivative, Term of Contract Infrastructure Financing Facilities Infrastructure Financing Facility [Member] Represents the information pertaining to infrastructure financing facility. Servicing fees Fees and Commissions, Mortgage Banking and Servicing Proceeds from sale of operating properties Proceeds from Sale of Real Estate Morgan Stanley Bank, N.A. Morgan Stanley Bank, N.A. [Member] Morgan Stanley Bank, N.A. Extended Maturity and Interest Rate Reduction Extended Maturity and Interest Rate Reduction [Member] Level I Fair Value, Inputs, Level 1 [Member] Initial term Noncontrolling Interest, Sale of Investment Interest, Initial Term Noncontrolling Interest, Sale of Investment Interest, Initial Term Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted (in dollars per share) Earnings Per Share, Diluted Activity in credit loss allowance for HTM debt securities Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward] Credit instruments Credit Index Product [Member] Number of shares issued (in shares) Sale of Stock, Number of Shares Issued in Transaction S P T Management L L C S P T Management L L C [Member] Represents information pertaining to SPT Management, LLC. Commercial Loans Commercial Loan [Member] Treasury stock, shares (in shares) Beginning balance (in shares) Ending balance (in shares) Treasury Stock, Common, Shares Specific credit loss allowance Allowance for Loan and Lease Losses, Real Estate Proceeds from DRIP Plan Stock Issued During Period, Value, Dividend Reinvestment Plan Maximum facility size subject to certain conditions Line Of Credit Facility Capacity Available For Specific Purpose Other Than For Trade Purchases Subject To Certain Conditions The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer, subject to certain conditions defined in the facility agreement. Sales Intangible Assets Sold Intangible Assets Sold Consolidation Items [Domain] Consolidation Items [Domain] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Origination, purchase and funding of loans held-for-investment Payment for Acquisition, Loan, Held-for-Investment 2022 Equity Plan Starwood Property Trust Inc Equity Plan [Member] Represents information pertaining to the Starwood Property Trust, Inc. Equity Plan providing for the issuance of restricted stock or restricted stock units to the entity's employees as a form of incentive compensation. Not primary beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Investments in Unconsolidated Entities​ Equity Method Investments and Joint Ventures Disclosure [Text Block] Loan number of extension options Loan Payable, Number Of Extension Options Loan Payable, Number Of Extension Options Asset Acquisition [Table] Asset Acquisition [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Management fees Management Fees Represents management fees paid to various parties to manage (i) the overall company and (ii) certain designated investments. Investment securities, net of credit loss allowances of $46,910 and $37,369 ($125,481 and $121,433 held at fair value) Total investment securities Investment securities Investments, Excluding Unconsolidated Entities Investments, Excluding Unconsolidated Entities Advance rate Line of Credit Facility, Advance Rate, Percentage Line of Credit Facility, Advance Rate, Percentage Income taxes paid (refunded) Income Taxes Paid, Net Manager fees paid in stock Incentive Fee Compensation Represents the expense related to incentive fee compensation incurred by the entity during the reporting period (portion of incentive fee paid in stock). 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Two Total realized and unrealized gains (losses): Fair Value Assets Measured on Recurring Basis Realized and Unrealized Gains and Losses [Abstract] No definition available. Equity interests in two natural gas power plants Equity Interest In Natural Gas Power Plant [Member] This member stands equity interest in a natural gas power plant. ABS, FI Series 2025-1 Asset Backed Security, FI Series 2025-1 [Member] Asset Backed Security, FI Series 2025-1 Long-term debt, gross Long-Term Debt, Gross ABS Financing ABS Financing [Member] ABS Financing Subsidiaries Subsidiaries [Member] Construction of Data Center in Herndon Construction Of Data Center In Herndon [Member] Construction Of Data Center In Herndon Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Net Amounts Presented in the Statement of Financial Position Securities Sold under Agreements to Repurchase Remaining held (in shares) Investment Owned, Balance, Shares Loss on derivative financial instruments, net Gain (loss) recognized in income Gain (loss) on derivative financial instruments, net Gain (Loss) on Derivative Instruments, Net, Pretax Expiration Date Trading Arrangement Expiration Date Total net liabilities Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Title Agency Services Title Agency Services [Member] Title Agency Services Permanent Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Amounts of transaction Related Party Transaction, Amounts of Transaction Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Offsetting Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned [Abstract] Offsetting Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned [Abstract] Entity Current Reporting Status Entity Current Reporting Status Receivables [Abstract] Receivables [Abstract] Derivatives Derivative [Line Items] Interest rate futures Interest Rate Futures [Member] Interest Rate Futures Repurchase agreements, Gross Amounts Not Offset in the Statements of Financial Position, Cash Collateral Received/Pledged Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Proceeds from convertible debt Proceeds from Convertible Debt Collateral Held [Axis] Collateral Held [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Federal statutory tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Loan Securitization/Sale Activities Securitization and Financing Arrangements Disclosure [Text Block] This element represents details related to agreements and arrangements entered into by the entity related to securitization and financial arrangements of the entity in one text block. Financial Instrument [Axis] Financial Instrument [Axis] Investments of Consolidated Affordable Housing Fund Investments in and Advances to Affiliates, Schedule of Investments [Text Block] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Foreign exchange contracts Foreign Exchange Forward [Member] Accounts payable, accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Other Operating Liabilities Securities with a loss greater than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Repayments of debt Repayments of Debt State and local income taxes, net of federal effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Total net loans Balance at the beginning of the period Balance at the end of the period SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Other expense Other Operating Income (Expense), Net CMBS JV Cmbs Jv [Member] Represents information pertaining to CMBS joint venture. Limited partnership interest Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Proceeds from borrowings Proceeds from Issuance of Long-Term Debt Current Fiscal Year End Date Current Fiscal Year End Date Ireland IRELAND Securities with a loss less than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Schedule of Investments in Mortgages and Loans by Subordination Class Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Weighted Average Grant Date Fair Value (per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Common stock available for future grants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant HTM debt securities Allowance for credit loss Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Schedule of Real Estate Properties [Table] Real Estate Property, Ownership [Table] Derivative liabilities Fair Value of Derivatives in a Liability Position Net Amounts Presented in the Statement of Financial Position Derivative Liability 2022 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Number of loans in portfolio modified Financing Receivable, Modified, Number Of Loans In Portfolio Financing Receivable, Modified, Number Of Loans In Portfolio Sales and redemptions Sales And Redemption Of Marketable Securities Total debt and equity financial instruments sold during the period. Equity interest in a data center business in Ireland Equity Interest In Data Center Business [Member] Equity Interest In Data Center Business Distributions of earnings from unconsolidated entities Proceeds from Equity Method Investment, Distribution Schedule of Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity security, fair value Equity security Equity Securities, FV-NI, Current Schedule of Conversion Attributes on Convertible Notes Outstanding Convertible Debt Conversion Attributes [Table Text Block] Convertible Debt Conversion Attributes Number of anti-dilutive common shares excluded from the calculation of diluted income per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Tax [Table] Income Tax [Table] Schedule reflecting information pertaining to income taxes. Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Liabilities assumed Noncash or Part Noncash Acquisition, Value of Liabilities Assumed HTM Securities Schedule of Held-to-Maturity Securities [Line Items] 2028 Long-Term Debt, Maturity, Year Two Collateral assets Collateral Pledged [Member] Investment funds which own equity in a loan servicer and other real estate assets Loan Servicing Venture [Member] Represents information pertaining to loan servicing venture. Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Costs of rental operations Direct Costs of Leased and Rented Property or Equipment Credit loss reversal, net Credit loss reversal, net Financing Receivable, Credit Loss, Expense (Reversal) Repurchase of remaining common stock Share Repurchase Program, Remaining Authorized, Amount Cost of third party management Debt Securities, Available For Sale, Cost of Third Party Management Represents the cost to execute trading of available-for-sale securities by a third party manager engaged by the entity. Disposal Group Classification [Domain] Disposal Group Classification [Domain] Forward Starting Swap Forward Starting Swap [Member] Forward Starting Swap Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] One to three years Held-to-maturity Securities, Debt Maturities, after One Through Three Years, Net Carrying Amount Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year through the third fiscal year following the latest fiscal year. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of deferred financing costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Term including extensions Non-Controlling Interest Sale, Term Including Extensions Non-Controlling Interest Sale, Term Including Extensions Asset Acquisition [Axis] Asset Acquisition [Axis] Thereafter Off-Market Lease, Unfavorable, Expected Amortization, after Year Four Off-Market Lease, Unfavorable, Expected Amortization, after Year Four Schedule of Assets and Liabilities of our Consolidated CLO Schedule of Variable Interest Entities [Table Text Block] 33.33% Origination Loan Construction Of Data Center In Herndon, 33.33% Origination Loan [Member] Construction Of Data Center In Herndon, 33.33% Origination Loan GBP United Kingdom, Pounds Percentage of origination of loan Debt Instrument, Face Amount, Percentage Of Origination Debt Instrument, Face Amount, Percentage Of Origination Short Short [Member] Common stock, shares issued (in shares) Common Stock, Shares, Issued Schedule of Purchases, Sales and Redemptions, and Principal Collections for All Investment Securities Schedule of Transactions Investment Securities [Table Text Block] Tabular disclosure of the transactions during the period of investment securities, including but not limited to purchases, sales and pay-downs. Rolling maturity period Debt Instrument Rolling Term Rolling period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 2030 Long-Term Debt, Maturity, Year Four CMBS Commercial Mortgage-Backed Securities [Member] Number of units Number Of Units Number Of Units Medical Office Portfolio Medical Office Portfolio [Member] Represents information pertaining to the Medical Office Portfolio of properties. Goodwill and Intangibles Goodwill and Intangible Assets Disclosure [Text Block] Activity in allowance for loan losses Allowance for Loan and Lease Losses [Roll Forward] Dividends declared with respect to the first quarter, but not yet paid Dividends Payable, Current Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Repurchase agreements Offsetting Securities Sold under Agreements to Repurchase [Abstract] Rental income Operating Lease, Lease Income Fees Received Sale Of Participating Interests In Commercial Loans To Private Investment Fund, Fees Received [Member] Sale Of Participating Interests In Commercial Loans To Private Investment Fund, Fees Received Corporate Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Securitization SPEs Securitization Special Purpose Entities [Member] Represents information pertaining to securitization a special purpose entity (SPE). Basis of loans sold SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Cost of Mortgage Sold Residential, fair value option Residential Mortgage Backed Securities Fair Value Option [Member] Represents information pertaining to Residential mortgage backed securities which are elected as fair value option. 2026 (remainder of) Long-Term Debt, Maturity, Remainder of Fiscal Year Chicago Chicago [Member] Chicago Percentage of conversion price and last reported sales price as a basis for debt conversion Debt Instrument Percentage Of Conversion Price And Last Reported Sales Price As A Basis For Debt Conversion Debt Instrument Percentage Of Conversion Price And Last Reported Sales Price As A Basis For Debt Conversion Investments in loans SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] Change in fair value of investment securities, net Change in fair value of investment securities Marketable Security, Unrealized Gain (Loss) CMBS/RMBS Collateralized Mortgage-Backed Securities [Member] Loans Financing Receivables [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Outstanding loan purchase commitment Purchase Commitment, Remaining Minimum Amount Committed Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Proceeds from DRIP Plan (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Loan principal collections temporarily held at master servicer Loan Principal Collections Temporarily Held At Master Servicer Amount of loan principal collections temporarily held at master servicer. Conversion upon satisfaction of closing market price condition Sale Price Condition [Member] Sale Price Condition Intra-entity transfers Effective Income Tax Rate Reconciliation Intra Entity Transfer Effective Income Tax Rate Reconciliation Intra Entity Transfer Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Statement [Line Items] Statement Statement [Line Items] 2025 Through 2nd Quarter of 2027 Derivative Swap Period Two [Member] Derivative Swap Period Two Repurchase agreements, Gross Amounts Not Offset in the Statements of Financial Position, Financial Instruments Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Conditions for Debt Conversion [Domain] Conditions for Debt Conversion [Domain] Conditions for Debt Conversion [Domain] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Subsequent Events Subsequent Event [Line Items] Common stock Common Stock [Member] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Issuance of debt of consolidated VIEs Proceeds from Issuance of Debt of Consolidated Variable Interest Entities The cash inflow during the period from additional borrowings in aggregate debt of consolidated variable interest entities. Less: accumulated depreciation Real Estate Investment Property, Accumulated Depreciation VIE assets duration ​Variable Interest Entity Assets, Duration ​Variable Interest Entity Assets, Duration SPT Dolphin Spt Dolphin [Member] Represents information related to SPT Dolphin. Constant prepayment rate Measurement Input, Prepayment Rate [Member] Loan Transfer Activities [Table] Loan Transfer Activities [Table] Information pertaining to loan transfer activities. Range [Domain] Statistical Measurement [Domain] Proceeds from sales and redemptions of investment securities Proceeds From Sales And Redemptions Of Investment Securities Represents the information pertaining to cash inflow from sales of investment securities. Related Party Transaction [Axis] Related Party Transaction [Axis] Schedule of Variable Rate Loans Held-for-Investment Loans Receivable with Variable Rates of Interest [Table Text Block] The tabular disclosure on loans with variable or adjustable rate of interest. ABS, FI Seriess 2024-1 Asset Backed Security, FI Series 2024-1 [Member] Asset Backed Security, FI Series 2024-1 Gross Carrying Value Intangible Assets, Gross (Excluding Goodwill) Interest rate contracts Interest Rate Swap [Member] Payment of deferred financing costs Payments of Financing Costs Included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Earnings from unconsolidated entities Earnings from unconsolidated entities Earnings (loss) from unconsolidated entities Income (Loss) from Equity Method Investments Variable interest entity (“VIE”) assets, at fair value VIE assets Variable Interest Entity, Assets Variable Interest Entity, Assets Loan Transfer Activities Loan Transfer Activities [Line Items] Percentage of repurchase agreements containing margin call provisions that pertain to loans held-for-sale Percentage Of Repurchase Agreements Containing Margin Call Provisions That Pertain To Loans Held For Sale Represents the percentage of repurchase agreements containing margin call provisions that pertain to loans held-for-sale. 2025 Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year Percentage of conversion price as a basis for debt conversion Debt Instrument Percentage Of Conversion Price As A Basis For Debt Conversion Debt Instrument Percentage Of Conversion Price As A Basis For Debt Conversion Shares issued (in shares) Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Schedule of Dividends Declared by Board of Directors Dividends Declared [Table Text Block] Pledged Status [Axis] Pledged Status [Axis] Number of mortgage loans Financing Receivable, Number Of Mortgage Loans Financing Receivable, Number Of Mortgage Loans Schedule of Offsetting Assets and Liabilities Offsetting Assets and Liabilities [Table Text Block] Tabular disclosure of derivative and other financial assets and liabilities that are subject to offsetting, including master netting arrangements. Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Power Rating5 [Member] Internally assigned credit rating 5, representing the highest risk category. Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Index Fed Funds Effective Rate Overnight Index Swap Rate [Member] Basic (in dollars per share) Earnings Per Share, Basic Collateralized Loan, Diversified Portfolio of Logistics Assets Collateralized Loan, Diversified Portfolio of Logistics Assets [Member] Collateralized Loan, Diversified Portfolio of Logistics Assets Financial Liabilities: Liabilities, Fair Value Disclosure [Abstract] Debt securities, held-to-maturity, nonaccrual Debt Securities, Held-to-Maturity, Nonaccrual Common stock available for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Weighted average extended maturities Repurchase Agreement Counterparty, Weighted Average Maturity of Agreements Discount rate Measurement Input, Discount Rate [Member] Mortgage Loans on Real Estate, Loan Category [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain] Other comprehensive loss Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Schedule of Additions to Long-lived Assets By Business Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Accrued and capitalized interest receivable, less purchased interest Increase (Decrease) in Accrued Interest Receivable, Net Gross Unrealized Holding Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Measurement Input Type [Domain] Measurement Input Type [Domain] Transfer to/from other asset classifications or between segments Mortgage Loans on Real Estate, Transfers The carrying amount of mortgage loans that were transferred in from or out to other asset classifications during the period. Affiliated Entity Affiliated Entity [Member] Intangible Liabilities, Net [Abstract] Intangible Liabilities, Net [Abstract] Intangible Liabilities, Net Total Other Secured Financing Other Secured Financing [Member] Represents information pertaining to Secured financing other than securities sold under agreements to repurchase and securities loaned. Change in net assets related to consolidated VIEs Variable Interest Entity, Measure of Activity, Income or Loss before Tax Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Share-based expense Share-Based Payment Arrangement, Expense Balance Sheet Presentation of Securitization Variable Interest Entities Balance Sheet Presentation of the Investing and Servicing Segments Variable Interest Entities [Policy Text Block] Describes the entity's accounting policy for the balance sheet presentation of the Investing and Servicing Segment's variable interest entities. Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Secured financing agreements, net Secured financing agreements, net Secured Debt Loans held-for-sale, at fair value Loans held-for-sale Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance Base management fee payable Related Party, Base Management Fee Payable Represents the base management fees payable as of the balance sheet date, for the operation and management of the entity's business. Total Liabilities and Equity Liabilities and Equity Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Net income Temporary Equity, Net Income Available-for-sale Available-for-Sale Securities [Member] Consolidated Partnership Consolidated Partnership [Member] Consolidated Partnership Derivative assets Offsetting Derivative Assets [Abstract] Total additions to long-lived assets Segment, Expenditure, Addition to Long-Lived Assets Derivative assets, Gross Amounts Not Offset in the Statements of Financial Position, Financial Instruments Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Investments in and Advances to Affiliates [Line Items] Investment in Unconsolidated Entities Investments in and Advances to Affiliates [Line Items] Accounting Policies [Abstract] Accounting Policies [Abstract] Gross Amounts Offset in the Statement of Financial Position Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Asset Offset Refinancing of Medical Office Portfolio Refinancing Of Medical Office Portfolio [Member] Refinancing Of Medical Office Portfolio Distributions to non-controlling interests Temporary Equity, Distributions Temporary Equity, Distributions Treasury Stock​ Treasury Stock, Common [Member] Pay vs Performance Disclosure [Line Items] Marketable securities, Non-controlling interest Marketable Securities, Non-Controlling Interest Marketable Securities, Non-Controlling Interest Accumulated Amortization Off-Market Lease, Unfavorable, Accumulated Amortization Off-Market Lease, Unfavorable, Accumulated Amortization 90 days or greater past due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Manager fee paid in stock (in shares) Stock Issued During Period, Shares, Issued for Services Liabilities: Liabilities Liabilities [Abstract] Multifamily Properties Multifamily Properties [Member] Multifamily Properties Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Loan maturities/principal repayments SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Collections of Principal Proceeds from sales of real estate Proceeds From Sales Of Real Estate, Net Of Debt Assumed By Purchaser Proceeds From Sales Of Real Estate, Net Of Debt Assumed By Purchaser Equity interest in a servicing and advisory business Equity Interest In Servicing And Advisory Business [Member] Represents information pertaining to equity interests in a servicing and advisory business. Changes in financial assets classified as Level III Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Carrying value over (under) equity in net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Equity interests in certain subsidiaries used to secure facilities Equity Interests In Certain Subsidiaries Used As Security On Facilities Amount of equity interests in certain of the entity's subsidiaries used to secure debt facilities. Proceeds from shares redeemed Investment In Equity Securities Number Of Shares Redeemed, Proceeds Investment In Equity Securities Number Of Shares Redeemed, Proceeds Schedule of Variable Interest Entities [Table] Variable Interest Entity [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Comprehensive income attributable to Starwood Property Trust, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Disposal Group Name [Domain] Name Measure Name Count Number Of Securities Number of securities. Revenues: Sales Revenue Recognition [Abstract] No definition available. Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Secured Borrowings Secured Debt [Member] Lotus Infrastructure Partners, Domestic Natural Gas Power Plant Lotus Infrastructure Partners, Domestic Natural Gas Power Plant [Member] Lotus Infrastructure Partners, Domestic Natural Gas Power Plant Secured financing agreements Secured Debt Principal Amount Outstanding on Loans Securitized and Participating Mortgage Loans Participation Liabilities Amount Represents the carrying value as of the balance sheet date , including the current and noncurrent portions, of collateralized debt obligations and principal amount outstanding for securitized loans only (across all types of loans) and the amount of the participation liability at the end of the accounting period. Investing and Servicing Loan Sales Investing and Servicing Loan Sales [Member] Investing and Servicing Loan Sales Unsecured Senior Notes Unsecured Debt [Member] Income Taxes Income Tax [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Schedule of Gross Unrealized Losses and Estimated Fair Value of Securities with No Recorded Allowance for Credit Loss Unrealized Gain (Loss) on Investments [Table Text Block] Loans under fair value option, duration Loan, Held-for-Sale, Term Favorable lease intangible assets Favorable Lease Intangible Assets Off-Market Favorable Lease [Member] Total carrying amount Unsecured senior notes Long-Term Debt Effective variable rate basis Available for Sale Securities, Variable Rate Basis, Percentage Represents the percentage of the reference rate for the variable rate on available-for-sale securities as of the balance sheet date. Legal Entity [Axis] Legal Entity [Axis] Total Assets VIE assets Assets Cash Flows from Investing Activities: Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] Fair Value Portion at Other than Fair Value Measurement [Member] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year One Residential Loans Loans Held For Sale Residential [Member] Represents the information pertaining to residential loans which are held for sale. Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Geographical [Domain] Geographical [Domain] Borrower Borrower [Member] Borrower Income Taxes Income Tax, Policy [Policy Text Block] Minimum annual REIT taxable income distributable to stockholders (as a percent) Percentage Of Annual R E I T Taxable Income Distributable To Stockholders Minimum Represents the minimum percentage of annual taxable income which must be distributed to stockholders in order to comply with requirements of the federal tax law for treatment as a real estate investment trust. Weighted average amortization period of acquired lease intangible assets Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life Properties, cost Real Estate Investment Property, at Cost Schedule of Maturities of our HTM Debt Securities Schedule Of Maturities Of Preferred Equity Interests In Limited Liability Companies [Table Text Block] Tabular disclosure of maturities of preferred equity interests in limited liability companies that own commercial real estate. Three to five years Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, After Year Three Through Year Five Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, After Year Three Through Year Five Financial Assets: Assets, Fair Value Disclosure [Abstract] Variable interest entities Variable Interest Entity [Line Items] Consecutive trading period as a basis for debt conversion Debt Instrument Consecutive Trading Period As A Basis For Debt Conversion Debt Instrument Consecutive Trading Period As A Basis For Debt Conversion 2030 Finite-Lived Intangible Asset, Expected Amortization, Year Four Fair Value Debt Securities, Held-to-Maturity, Fair Value Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Level II Fair Value, Inputs, Level 2 [Member] Annual base rent (in dollars per sq ft) Operating Lease, Annual Base Rent Per Square Foot Represents the annual base rent per square foot under the operating leases. State and local income taxes, net of federal effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount SEK Sweden, Kronor Equity method, carrying value Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Newly Formed FREMF 2024-KF163 Trust Newly Formed FREMF 2024-KF163 Trust [Member] Newly Formed FREMF 2024-KF163 Trust Related Party Related Party [Member] Asset Pledged as Collateral Asset Pledged as Collateral [Member] Carrying Value Total Amortized Cost Basis Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages The gross carrying amount of the outstanding balance due under the mortgage loan. Residential Loans Residential Mortgage [Member] Plan Name [Axis] Plan Name [Axis] Assets acquired, less cash Noncash or Part Noncash Acquisition, Value of Assets Acquired PEO PEO [Member] Transfers into Level III Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Cost method, Participation / Ownership % Cost Method Investments Ownership Percentage The percentage of ownership of common stock or equity participation which an investee has accounted for, under the cost method of accounting. Supplemental disclosure of non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Deconsolidation of VIEs Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis, Asset, Deconsolidations Of Variable Interest Entity Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis, Asset, Deconsolidations Of Variable Interest Entity Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Credit deteriorated Financial Asset Acquired with Credit Deterioration [Member] Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Starwood 2025-SIF5 Collateralized Loan Obligations, STWD 2025-SIF5 [Member] Collateralized Loan Obligations, STWD 2025-SIF5 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, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Derivative assets Fair Value of Derivatives in an Asset Position Net Amounts Presented in the Statement of Financial Position Derivative assets Derivative Asset Securities with a loss greater than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Payments to acquire marketable securities Payments to Acquire Marketable Securities Sale of Stock [Domain] Sale of Stock [Domain] VIE liabilities, at fair value VIE liabilities Variable Interest Entity, Liabilities Variable Interest Entity, Liabilities Derivative Swap Period [Domain] Derivative Swap Period [Domain] Derivative Swap Period [Domain] Investments of consolidated affordable housing fund, at fair value Investments of consolidated affordable housing fund Investments, Fair Value Disclosure Intangible assets, net ($27,743 and $28,280 held at fair value) Net Carrying Value Beginning balance Ending balance Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Loan foreclosures Loan foreclosures Mortgage Loans On Real Estate, Loan Foreclosure And Converted To Equity Control Interest During Period Mortgage Loans On Real Estate, Loan Foreclosure And Converted To Equity Control Interest During Period Land and land improvements Land and Land Improvements Total Starwood Property Trust, Inc. Stockholders’ Equity Parent [Member] Net income (loss) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total Liabilities, Fair Value Disclosure Repurchase program, period in force Share Repurchase Program, Period in Force Number of industries Asset Acquisition, Number Of Industries Asset Acquisition, Number Of Industries Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Aggregate Notional Amount Derivative, notional amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] REIT and other non-taxable income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount LTV Measurement Input Loan To Stabilized Value [Member] Measurement input using LTV. Change in fair value of affordable housing fund investments Change In Fair Value Of Affordable Housing Fund Investments Change In Fair Value Of Affordable Housing Fund Investments City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Woodstar Fund investments Fund Investments [Member] Fund Investments USD United States of America, Dollars Loans under fair value option Loan, Held-for-Sale, Measurement Input Loan extension term Loan Payable, Extension Term Loan Payable, Extension Term Schedule of Properties Held-for-Investment Schedule of Real Estate Investment Property [Table Text Block] Tabular disclosure of real estate assets included in the discussion of the nature of the entity's operations. Buildings and building improvements Buildings and Improvements, Gross Maximum Facility Size Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Number of related-party loan transactions Number Of Related-Party Loan Transactions Number Of Related-Party Loan Transactions Accrued interest receivable Accrued interest receivable Accrued interest receivable Interest Receivable Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Goodwill Goodwill Number of publicly traded investments Number Of Publicly Traded Investments Number of publicly traded investments. Weighted-average Spread Above Index Basis spread on variable rate Loans Receivable, Basis Spread on Variable Rate Delinquency rate Measurement Input Delinquency Rate [Member] This member represents information pertaining to delinquency rate of measurement input. Business and Organization Nature of Operations [Text Block] Manager fees paid in stock Stock Issued During Period, Value, Issued for Services Gain on sales of real estate Gains (Losses) on Sales of Investment Real Estate ABS, FI Series 2023-2 Asset Backed Security, FI Series 2023-2 [Member] Asset Backed Security, FI Series 2023-2 Equity method investments: Equity Method Investment, Difference Between Carrying Amount and Underlying Equity [Abstract] Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Number of retail properties acquired Number of Retail Properties Acquired The number of retail properties. Net Basis Debt Securities, Available-for-Sale, Amortized Cost Deconsolidation of VIEs (VIE asset/liability reductions) Variable Interest Entity, Deconsolidation, In Non Cash Investing And Financing Activities Variable Interest Entity, Deconsolidation, In Non Cash Investing And Financing Activities Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Coupon Investment Securities, Weighted Average Interest Rate Stated Percentage Represents the weighted average coupon interest rate on investment securities. Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Starwood European Real Estate Debt Finance II LP Starwood European Real Estate Debt Finance II LP [Member] Starwood European Real Estate Debt Finance II LP Related Party [Domain] Related and Nonrelated Parties [Domain] Discount rate - debt Measurement Input, Discount Rate, Debt [Member] Measurement Input, Discount Rate, Debt Reconciliation of statutory tax to effective tax Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Derivative Instrument [Axis] Derivative Instrument [Axis] Financial liabilities not carried at fair value: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Additional paid-in capital Additional Paid in Capital, Common Stock Fair value of investment securities before consolidation of VIEs Investment Securities Fair Value Before Consolidation Of Variable Interest Entities Represents the fair value balance of the investment securities before consolidation of the VIEs. Entity [Domain] Entity [Domain] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Investments in unconsolidated entities Investment in unconsolidated entities Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Stockholders' Equity and Non-Controlling Interests Shareholders' Equity and Share-Based Payments [Text Block] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Other equity investments: Equity Method Investment, Summarized Financial Information [Abstract] Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract] Carrying Value Reported Value Measurement [Member] Plan Name [Domain] Plan Name [Domain] Carrying Value Loans Receivable with Variable Rates of Interest Construction loan Construction Loan Restricted Stock Awards Restricted Stock Awards [Member] Represents information related to Restricted Stock Awards ("RSAs"). Share-based compensation Share-based Compensation and Nonemployee Services Transaction Expense The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. Also includes the amount of expense reported during the period resulting from the transaction in which equity securities were issued to pay for nonemployee services. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Securitized financing, net Carrying Value Securitized financing, net Collateralized Financings Portion of securities with variable rate (as a percent) Investment Securities, Variable Rate Percentage Represents the percentage of investment securities bearing variable interest rates. Real Estate [Abstract] Real Estate [Abstract] STWD 2022-FL3 Collateralized Loan Obligations, STWD 2022-FL3 [Member] Collateralized Loan Obligations, STWD 2022-FL3 Defeased and other Rating4 [Member] Internally assigned credit rating 4, representing the second-to-highest risk category. Earnings per share data attributable to Starwood Property Trust, Inc.: Earnings Per Share Attributable to STWD Common Stockholders: Earnings Per Share Attributable To Starwood Property Trust, Inc [Abstract] Earnings Per Share Attributable To Starwood Property Trust, Inc Commercial and Residential Lending Segment Property Portfolio Commercial And Residential Lending Segment Property Portfolio [Member] Commercial And Residential Lending Segment Property Portfolio Segment Data Segment Reporting Disclosure [Text Block] Schedule of Goodwill [Table] Goodwill [Table] Percentage of loan originated by third party Debt Instrument, Face Amount, Percentage Of Origination, Third Party Debt Instrument, Face Amount, Percentage Of Origination, Third Party Number of shares acquired (in shares) Investment in Equity Securities Number of Shares Acquired Represents the number of shares acquired in the equity security investment. Assets and liabilities measured at fair value Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Infrastructure Loans Infrastructure Loans [Member] Represents information pertaining to infrastructure loans. Fundamental Income Properties, LLC Fundamental Income Properties, LLC [Member] Fundamental Income Properties, LLC Senior Loans Senior Loans [Member] Percentage of repurchase agreements containing margin call provisions for general capital market activity Percentage Of Repurchase Agreements Containing Margin Call Provisions For General Capital Market Activity Represents the percentage of repurchase agreements containing margin call provisions for general capital market activity. New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Credit loss reversal, net Credit loss provision (reversal), net Provision for Loan Losses Net The net amount of expense (recovery) related to the credit loss allowance. Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] 2026 Senior Notes Senior Notes Due 2026 [Member] Senior Notes Due 2026 Weighted Average Coupon Weighted-average Weighted Average [Member] Amortization Amortization of Intangible Assets Redemption of units Stock Redeemed or Called During Period, Value Available-for-sale securities, measurement input Debt Securities, Available-for-Sale, Measurement Input Gross purchase price Payments to Acquire Productive Assets Schedule of Changes in AOCI by Component Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Fair value option Fair Value Option Fair Value Option Securities [Member] Investments in securities for which the entity has elected the fair value option. Conversion rate Debt Instrument, Convertible, Conversion Ratio Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Four Finite-Lived Intangible Asset, Expected Amortization, after Year Four Amount of unrealized gains (losses) attributable to assets Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] Amount of Unrealized Gains (Losses) Attributable to Assets Still Held Basic earnings Income (Loss) from Continuing Operations Basic Amount of income (loss) from continuing operations attributable to the parent, used in calculating basic EPS. RMBS Residential Mortgage-Backed Securities [Member] Proceeds from principal collections on investment securities Principal collections Proceeds from Principal Collections on Investment Securities Cash inflow from proceeds from principal collections on investment securities. Revolving Credit Facility Revolving Credit Facility [Member] Gain on sale of investments and other assets, net Gain on sale of investments and other assets, net Gain (Loss) on Sale of Investments Net Represents the net gain from sale of loans, securities, real estate, and non-performing loans, excluding financial instruments where the fair value option has been elected. Arrangement Duration Trading Arrangement Duration Purchase price (in dollars per share) Share-based Compensation Arrangement By Share-based Payment Award, Purchase Price Per Share Share-based Compensation Arrangement By Share-based Payment Award, Purchase Price Per Share Notional amount of swaps not yet effective Derivative, Notional Amount, Not Yet Effective Derivative, Notional Amount, Not Yet Effective Acquisitions/originations/additional funding SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, New Mortgage Loan Depreciation and amortization Depreciation and Amortization Excluding Amortization of above below Market Leases The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. This excludes the amortization of above and below market leases. Segments [Axis] Segments [Axis] Other Secured Financing Other Secured Financing Debt Obligations [Member] Represents information relating to collateralized debt obligations classified as other secured financing. Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Oil and gas Rating6 [Member] Rating6 Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Closing share price (in dollars per share) Share Price Net Carrying Value Unfavorable lease liabilities, beginning balance Unfavorable lease liabilities, ending balance Off-Market Lease, Unfavorable CLOs and SASB CLOs and SASB [Member] CLOs and SASB Unfunded commitments Unfunded commitments Off-Balance-Sheet, Credit Loss, Liability Assets: Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Schedule of Activity Within Intangible Assets and Intangible Liabilities Schedule Of Movement In Finite And Indefinite Lived Intangible Assets And Intangible Liabilities [Table Text Block] Represents the summary of movement in the intangible assets and liabilities during the reporting period. Debt Instrument [Axis] Debt Instrument [Axis] Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Loss on extinguishment of debt Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Credit Facility [Domain] Credit Facility [Domain] Starwood Property Trust, Inc. Stockholders’ Equity: Equity, Attributable to Parent [Abstract] Fund term Subscription Fund, Term Subscription Fund, Term Common stock repurchased Common stock repurchased Treasury Stock, Value, Acquired, Cost Method Affiliates Of Manager Affiliates Of Manager [Member] Affiliates Of Manager Coupon Rate Coupon rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Estimated Fair Value Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Percentage of per share value of distributions that exceeds the market price of the entity's common stock as a basis for debt conversion Debt Instrument Percentage of Dividend Per Share Distribution that Exceeds Market Price of Common Stock as Basis for Debt Conversion Debt Instrument Percentage of Dividend Per Share Distribution that Exceeds Market Price of Common Stock as Basis for Debt Conversion Debt yield Measurement Input, Credit Spread [Member] Nonaccrual loans resolved Financing Receivable, Amount Of Nonaccrual Loans Resolved Financing Receivable, Amount Of Nonaccrual Loans Resolved Percent increase in base rent Operating Lease, Percentage Of Increase in Annual Base Rent Represents the percentage of increase in annual base rent under the operating leases. Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Gross Amounts Recognized Derivative Asset, Subject to Master Netting Arrangement, before Offset Repayment of debt of consolidated VIEs Repayments of Debt of Consolidated Variable Interest Entities The cash outflow during the period from the repayment of aggregate debt of consolidated variable interest entities. Investment securities value at acquisition Investment Securities Value At Acquisition Investment Securities Value At Acquisition Entity Registrant Name Entity Registrant Name Choctaw, Mississippi Choctaw, Mississippi [Member] Choctaw, Mississippi ATM Agreement ATM Agreement [Member] ATM Agreement Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Affiliates of Chairman and CEO Affiliates Of Chairman And Ceo [Member] Represents the information pertaining to office lease agreement with affiliate of the chairman and CEO. Schedule of Activity in Allowance for Loan Losses Financing Receivable, Noncurrent, Allowance for Credit Loss [Table Text Block] TRS entities T R S Subsidiaries [Member] Taxable REIT subsidiaries of the entity, which are not consolidated for federal income tax purposes, but are instead taxed as corporations. Total Assets, Fair Value Disclosure Foreign currency translation gain (loss), net Mortgage Loans on Real Estate Unrealized Foreign Currency Remeasurement Gain (Loss) Represents the unrealized foreign currency measurement gain or loss on mortgage loans. Net assets acquired through foreclosure: Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) [Abstract] Remainder of 2024 Derivative Swap Period One [Member] Derivative Swap Period One 2026 (remainder of) Off-Market Lease, Unfavorable, Expected Amortization, Remainder of Fiscal Year Off-Market Lease, Unfavorable, Expected Amortization, Remainder of Fiscal Year Number of net lease properties sold Number Of Net Lease Properties Sold Number Of Net Lease Properties Sold Other equity investments, carrying value Equity Securities without Readily Determinable Fair Value, Amount Number of co-originated loans we are minority lender on Number Of Co-Originated Loans, Minority Lender Amount Number Of Co-Originated Loans, Minority Lender Amount Loans Held-for-Investment Unfunded Loan Commitment, Loans Held-For-Investment [Member] Unfunded Loan Commitment, Loans Held-For-Investment Accretion of net discount on investment securities Accretion (Amortization) of Discounts and Premiums, Investments Intangible assets held at fair value Domestic servicing rights Servicing Asset at Fair Value, Amount Schedule of Secured Financing Agreements Schedule of Debt [Table Text Block] Other Modifications Other Modifications [Member] Other Modifications Securitization VIEs Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Related Party [Axis] Related and Nonrelated Parties [Axis] Future Funding Commitments Sale Of Participating Interests In Commercial Loans To Private Investment Fund, Future Funding Commitments [Member] Sale Of Participating Interests In Commercial Loans To Private Investment Fund, Future Funding Commitments Restatement Determination Date: Restatement Determination Date [Axis] Share-based compensation Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] First Mortgage And Mezzanine Loan First Mortgage And Mezzanine Loan [Member] First Mortgage And Mezzanine Loan Loans Held-for-Investment Financing Receivable, Held-for-Investment [Policy Text Block] Off-market lease, unfavorable, weighted average amortization period Off-Market Lease, Unfavorable, Weighted Average Amortization Period Off-Market Lease, Unfavorable, Weighted Average Amortization Period Interest expense, debt Interest Expense, Debt Weighted Average Coupon SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate Maximum purchase value during calendar year, per employee Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Purchase Value During Calendar Year, Per Employee Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Purchase Value During Calendar Year, Per Employee ARIZONA ARIZONA Amounts reclassified from AOCI Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax All Currencies [Domain] All Currencies [Domain] Costs Related to Contract Construction Loan Services Contract, Costs [Member] Construction Loan Services Contract, Costs Face Amount Unpaid principal balance Mortgage Loans on Real Estate Principal Amount of Mortgages Amount of the contractual principal due as of the balance sheet date. Name Trading Arrangement, Individual Name Loans under fair value option Loan, Held-for-Sale, Fair Value Disclosure Non-controlling interest Noncontrolling Interest in Joint Ventures Face amount Debt Instrument, Face Amount 2022 Manager Equity Plan Starwood Property Trust Inc Manager Equity Plan [Member] Represents information pertaining to the Starwood Property Trust, Inc. Manager Equity Plan providing for the issuance of restricted stock or restricted stock units to the entity's manager as a form of incentive compensation. Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] If-converted value Debt Instrument, Convertible, If Converted Value Debt Instrument, Convertible, If Converted Value Secured Debt [Abstract] Secured Debt [Abstract] Name Awards Close in Time to MNPI Disclosures, Individual Name Balance at the beginning of period (in dollars per share) Balance at the end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Total net repurchase agreements Security Sold under Agreement to Repurchase, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Asset Acquisition [Line Items] Asset Acquisition [Line Items] 2027 Senior Notes Senior Notes Due 2027 [Member] Senior Notes Due 2027 Total Repurchase Agreements Repurchase Agreements [Member] Liability Class [Axis] Liability Class [Axis] Segments [Domain] Segments [Domain] Intra-entity transfers Income Tax Reconciliation, Intra Entity Transfer Income Tax Reconciliation, Intra Entity Transfer Investing and Servicing Segment REIS Equity Portfolio Investing And Servicing Segment Property Portfolio [Member] Investing And Servicing Segment Property Portfolio Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Before consolidation of securitization VIEs Consolidated Entity, Excluding Consolidated VIE [Member] VIE assets Variable Interest Entity Assets, Measurement Input Variable Interest Entity Assets, Measurement Input Foreign currency Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation Amortization of discounts and deferred financing costs on unsecured senior notes Amortization of Debt Issuance Costs and Discounts Property Segment Property Segment [Member] Information pertaining to the reportable segment of the entity representing the Property Segment. Liability Amortization Off-Market Lease, Unfavorable, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Off-Market Lease, Unfavorable, Net, Amortization Expense, Fiscal Year Maturity ABS, FI Series 2026-1 Asset Backed Security, FI Series 2026-1 [Member] Asset Backed Security, FI Series 2026-1 Loans held-for-sale Held-for-Sale Loans Loans under fair value option Loans Held For Sale [Member] Represents the information pertaining to loans which are held for sale. Cumulative Unrealized Gain (Loss) on Available-for- Sale Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Derivative assets, Gross Amounts Not Offset in the Statements of Financial Position, Cash Collateral Received/Pledged Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Earnings Per Share Earnings Per Share, Policy [Policy Text Block] AUD Australia, Dollars Gross Amounts Offset in the Statement of Financial Position Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Unamortized discount—Senior Notes Senior Notes [Member] Preferred stock, $0.01 per share, 100,000,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Investments in and Advances to Affiliates [Table] Investments in and Advances to Affiliates [Table] 2028 Off-Market Lease, Unfavorable, Expected Amortization, Year Two Off-Market Lease, Unfavorable, Expected Amortization, Year Two Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] All Executive Categories All Executive Categories [Member] Infrastructure bonds Infrastructure Bonds [Member] Represents information pertaining to infrastructure bonds. Common stock, $0.01 per share, 500,000,000 shares authorized, 379,313,805 issued and 370,738,571 outstanding as of March 31, 2026 and 378,011,570 issued and 370,562,879 outstanding as of December 31, 2025 Common stock Common Stock, Value, Issued Less: Income attributable to participating shares not already deducted as non-controlling interests Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Schedule of Unsecured Convertible Senior Notes Outstanding Convertible Debt [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] LTV less than 60% Rating1 [Member] Internally assigned credit rating 1, representing the lowest risk category. Conditions for Debt Conversion [Axis] Conditions for Debt Conversion [Axis] Conditions for Debt Conversion Starwood 2026-SIF7 Collateralized Loan Obligations, STWD 2026-SIF7 [Member] Collateralized Loan Obligations, STWD 2026-SIF7 Conduit Loans Conduit Loans [Member] Represents information pertaining to conduit loans. Commitments and contingencies (Note 22) Commitments and Contingencies SEREF Starwood European Real Estate Finance Limited [Member] Represents information pertaining to Starwood European Real Estate Finance Limited, an equity security investment. Subtotal Operating Segments And Corporate Non Segment [Member] Represents the total of all operating segments and corporate overhead not directly attributable to the operating segments. Area of office space Area Of Office Space Leased The area of office space leased. Business Combination [Axis] Business Combination [Axis] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Loans Payable Loans Payable [Member] Reverse Interest Rate Swap And Forward Starting Swap Reverse Interest Rate Swap And Forward Starting Swap [Member] Reverse Interest Rate Swap And Forward Starting Swap Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Repurchase Agreements Repurchase Agreements Debt Obligations [Member] Represents information relating to collateralized debt obligations classified as repurchase agreements. Non- Controlling Interests Noncontrolling Interest [Member] Schedule of Investment Income (Loss) Investment Income [Table Text Block] Equity method, Participation / Ownership % Ownership percentage Equity Method Investment, Ownership Percentage Basic Earnings Net Income (Loss) Available to Common Stockholders, Basic [Abstract] VIE Assets Variable Interest Entity Assets [Member] Represents information pertaining to Variable Interest Entity's (VIE) assets. SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Original Loan Amount [Domain] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Original Loan Amount [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Total gross properties and lease intangibles Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Total Gross Properties And Lease Intangibles Amount of total gross properties and lease intangibles acquired at the acquisition date. 2030 Off-Market Lease, Unfavorable, Expected Amortization, Year Four Off-Market Lease, Unfavorable, Expected Amortization, Year Four 2027 Convertible Notes Convertible Senior Notes Due 2027 [Member] Represents information pertaining to the 6.70 percent Convertible Senior Notes due 2027. Implied capitalization rate Measurement Input, Implied Capitalization Rate [Member] Measurement Input, Implied Capitalization Rate 2029 Senior Notes Senior Notes Due 2029 [Member] Senior Notes Due 2029 Preferred interests Preferred Equity Investment [Member] Represents information pertaining to the preferred equity investment. Extension term Noncontrolling Interest, Sale of Investment Interest, Extension Term Noncontrolling Interest, Sale of Investment Interest, Extension Term Scenario [Axis] Scenario [Axis] Amortized cost basis Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Net Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Net Credit loss allowance Credit Loss Allowance Credit loss allowance at beginning Credit loss allowance at ending Debt Securities, Held-to-Maturity, Allowance for Credit Loss 24.5% Origination Loan Construction Of Data Center In Herndon, 24.5% Origination Loan [Member] Construction Of Data Center In Herndon, 24.5% Origination Loan Proceeds Proceeds Loans Held for Sale Sold Fair Value Represents the fair value of loans held-for-sale, sold during the period. Revolvers and Letters of Credit Revolvers And Letters Of Credit Commitments [Member] Represents information pertaining to revolvers and letters of credit commitment. Total net derivative liabilities Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Number of Contracts Derivative, Number of Instruments Held Derivative Contract [Domain] Derivative Contract [Domain] Infrastructure loans: Infrastructure Portfolio Segment [Member] Portfolio segment of the company's total financing receivables related to infrastructure financing receivables. Schedule of Consolidated Balance Sheet by Business Segment Schedule of Condensed Consolidated Balance Sheet by Segment [Table Text Block] Tabular disclosure of the condensed consolidated balance sheet for each reportable segment. Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Net proceeds from issuances of common stock Proceeds from Issuance of Common Stock Investment securities Marketable Securities Fair Value Disclosure Marketable Securities Fair Value Disclosure Commercial loans Loans Held For Investment Commercial [Member] Represents information pertaining to commercial loans held for investment. Additional mortgage interest acquired during period from third party Mortgage Loans On Real Estate Gross Carrying Amount of Mortgages, Not On Nonaccrual, Additional Interest Acquired In Period From Third Party Mortgage Loans On Real Estate Gross Carrying Amount of Mortgages, Not On Nonaccrual, Additional Interest Acquired In Period From Third Party Debt Instruments [Abstract] All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Other Other Loans [Member] Represents other types of loans not separately disclosed. Fair Value Disclosures [Abstract] Name Forgone Recovery, Individual Name Change in fair value of derivatives Unrealized Gain (Loss) on Derivatives Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Amount by which if-converted value of the Notes are less than principal amount Debt Instrument Convertible If Converted Value Less Than Principal Debt Instrument Convertible If Converted Value Less Than Principal Number of additional properties acquired Number Of Additional Properties Acquired Number Of Additional Properties Acquired Disposal Group Classification [Axis] Disposal Group Classification [Axis] Weighted average interest rate Debt, Weighted Average Interest Rate Debt, Weighted Average Interest Rate Number of affordable housing communities in portfolio Number Of Affordable Housing Communities In Portfolio Number Of Affordable Housing Communities In Portfolio Purchase price of fair market value (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Starwood 2025-SIF6 Collateralized Loan Obligations, STWD 2025-SIF6 [Member] Collateralized Loan Obligations, STWD 2025-SIF6 Net Amounts Presented in the Statement of Financial Position Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-Maturity [Table] Prior Financing Receivable, Originated, More than Five Years before Current Fiscal Year Schedule of Non-Designated Derivatives Schedule of Derivative Instruments [Table Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] CMBS, term Debt Securities, Available-for-Sale, Term STWD 2024-SIF3 Collateralized Loan Obligations, STWD 2024-SIF3 [Member] Collateralized Loan Obligations, STWD 2024-SIF3 Number of properties Number Of Properties Number Of Properties Geographical [Axis] Geographical [Axis] Commercial loans: Commercial Portfolio Segment [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Foreign currency (loss) gain, net Gain (Loss), Foreign Currency Transaction, before Tax Amortization Off-Market Lease, Unfavorable, Amortization Off-Market Lease, Unfavorable, Amortization Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Distributions from affordable housing fund investments Operating Distributions From Investment Operating Distributions From Investment Title of 12(b) Security Title of 12(b) Security Decrease in interest rate Financing Receivable, Modified, Interest Rate Increase (Decrease) Financing Receivable, Modified, Interest Rate Increase (Decrease) SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] Property Financing Property Mortgages Fixed Rate [Member] Represents information pertaining to property mortgages with fixed rate. Percentage of interest sold Noncontrolling Interest, Sale Of Investment Interest, Percentage Noncontrolling Interest, Sale Of Investment Interest, Percentage Repayment of secured financings Long-Term Debt, Fiscal Year Maturity [Abstract] Asset-Backed Securities, Consolidated Collateralized Loan Obligations, And Single Asset Securitization Asset-Backed Securities, Consolidated Collateralized Loan Obligations, And Single Asset Securitization [Member] Asset-Backed Securities, Consolidated Collateralized Loan Obligations, And Single Asset Securitization Earnings Per Share [Abstract] Earnings Per Share [Abstract] Total other income (loss) Nonoperating Income (Expense) Ownership percentage Subsidiary, ownership percentage, parent Subsidiary, Ownership Percentage, Parent Distribution of capital from unconsolidated entities Proceeds from Equity Method Investment, Distribution, Return of Capital Several Commercial Credit Facilities Several Commercial Credit Facilities [Member] Several Commercial Credit Facilities Woodstar II Portfolio Woodstar Two Portfolio [Member] Represents information pertaining to the Woodstar II portfolio of properties. Investment in equity securities percentage ownership acquired Investment In Equity Securities Percentage Ownership Acquired Investment In Equity Securities Percentage Ownership Acquired Amortized cost basis of loans modified Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Modified Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Modified Unpaid reimbursable compensation Related Party, Executive Compensation Expense and Other Reimbursable Expenses, Payable Represents the executive compensation expense and other reimbursable expenses payable to the related party as of the balance sheet date. Various Various Cost Method Investee [Member] Represents information pertaining to various cost method investees. Amortization of deferred financing costs, premiums and discounts on secured borrowings Amortization of Deferred Charges Fair Value Measurement Using Significant Unobservable Inputs (Level III) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Common stock repurchased (in shares) Treasury Stock, Shares, Acquired Award Timing Disclosures [Line Items] Loss severity Measurement Input, Loss Severity [Member] OCI before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Gross Amounts Recognized Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, before Offset Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Amortized cost basis not on nonaccrual Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Not On Nonaccrual Mortgage Loans on Real Estate Gross Carrying Amount of Mortgages, Not On Nonaccrual 2024 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year Net income (loss) attributable to Starwood Property Trust, Inc. Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Securitized Financing Securitized Financing Collateralized Loan Obligations [Member] Properties, net Properties, net Real Estate Investment Property, Net Authorized value of stock under ATM agreement Common Stock Value Authorized Under A T M Equity Offering Sales Agreement Common Stock Value Authorized Under A T M Equity Offering Sales Agreement Secured Financing Secured Financing [Member] Secured Financing GEORGIA GEORGIA Schedule of Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Vesting period Vesting Period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Segment data Segment Reporting Information [Line Items] Amount outstanding on a repurchase facility not subject to margin calls Amount Outstanding On Repurchase Facility Not Subject To Margin Calls The amount outstanding on a repurchase facility that is not subject to margin calls. Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Purchase of treasury stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date REO assets as a percent of consolidated VIE assets REO Assets As Percent Of Consolidated VIE Assets Represents REO as a percentage of consolidated VIE assets. Term of master lease agreements Lessee, Operating Lease, Term of Contract VIE eliminations Securitization VIEs Consolidation, Eliminations [Member] Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Line of Credit Line of Credit [Member] Number of affordable housing communities acquired in portfolio Number Of Affordable Housing Communities Acquired In Period Number Of Affordable Housing Communities Acquired In Period Furniture & fixtures, Depreciable Life Real Estate Investment Furniture and Fixtures, Useful Life Useful life of real estate investment classified as furniture and fixtures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Accumulated deficit Retained earnings (accumulated deficit) Retained Earnings (Accumulated Deficit) Terminal capitalization rate Measurement Input, Terminal Capitalization Rate [Member] Measurement Input, Terminal Capitalization Rate Residential Loans Residential Portfolio Segment [Member] Number of individuals Assets Acquisition, Number Of Lease Agreements Assets Acquisition, Number Of Lease Agreements Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Accrued incentive fee Related Party Accrued Incentive Fee Represents the management incentive fee for the operation and management of the entity's business accrued during the period. Subsequent Event Type [Domain] Subsequent Event Type [Domain] Related-party payable Increase (Decrease) in Due to Related Parties Gross Amounts Recognized Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, before Offset Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Other loss, net Other (loss) income, net Other Nonoperating Income (Expense) Statement [Table] Statement [Table] Sale of Participating Interests in Commercial Loans to Private Investment Fund Sale Of Participating Interests In Commercial Loans To Private Investment Fund [Member] Purchase Of Private Investment Fund Managed Starwood Property Trust Inc Starwood Property Trust, Inc [Member] Starwood Property Trust, Inc Loans as a percent of consolidated VIE assets Loans As Percent Of Consolidated VIE Assets Represents loans as a percentage of consolidated VIE assets. Variable Rate [Domain] Variable Rate [Domain] Proceeds from principal collections on loans Proceeds from Loan and Lease Originations and Principal Collections All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Number of shares of authorized for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Treasury stock (8,575,234 shares and 7,448,691 shares) Treasury stock Treasury Stock, Common, Value Purchase of FREMF 2024-KF163 Purchase Of FREMF 2024-KF163 [Member] Purchase Of FREMF 2024-KF163 Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Schedule of Reconciliation of Net Income and Number of Shares used in Computation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related Party Transaction [Domain] Related Party Transaction [Domain] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Asset Amortization Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Rent expense Operating Lease, Expense Other income (loss): Nonoperating Income (Expense) [Abstract] Scenario, Unspecified [Domain] Scenario [Domain] Costs and expenses: Costs and Expenses [Abstract] Various Various Equity Method Investee [Member] Represents information pertaining to various equity method investees. Derivative liabilities Offsetting Derivative Liabilities [Abstract] Unamortized discount Debt Instrument, Unamortized Discount Thereafter Long-Term Debt, Maturity, After Year Four Long-Term Debt, Maturity, After Year Four Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Equity Incentive Plans Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Consolidated Entities [Axis] Consolidated Entities [Axis] Woodstar Fund Woodstar Fund [Member] Woodstar Fund Impairment of property Impairment of Real Estate Financing Financing Receivable [Member] Purchases and additions to properties and other assets Payments To Acquire Other Productive Assets, Nonmerger Payments To Acquire Other Productive Assets, Nonmerger Minimum number of conditions to be satisfied for conversion of debt Debt Instrument, Minimum Number of Conditions to be Satisfied for Conversion of Debt Debt Instrument, Minimum Number of Conditions to be Satisfied for Conversion of Debt Net Carrying Amount Debt Securities, Held-to-maturity, Net Debt Securities, Held-to-maturity, Net Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash repayments / receipts Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Construction in progress Construction in Progress, Gross April 2030 Senior Notes Senior Notes Due April 2030 [Member] Senior Notes Due April 2030 Number of shares redeemed (in shares) Investment In Equity Securities Number Of Shares Redeemed Investment In Equity Securities Number Of Shares Redeemed CLO contribution period Debt Instrument, New Contribution Period Debt Instrument, New Contribution Period Weighted average lease base term Assets Acquisition, Lease Agreements, Weighted Average Lease Base Term Assets Acquisition, Lease Agreements, Weighted Average Lease Base Term Gross Amounts Offset in the Statement of Financial Position Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Direct capitalization rate Measurement Input, Direct Capitalization Rate [Member] Measurement Input, Direct Capitalization Rate Number of real estate portfolio sold Number Of Real Estate Portfolios Sold Number Of Real Estate Portfolios Sold Equity Security Equity Securities [Member] Servicer advances Measurement Input Servicer Advances [Member] This member represents information pertaining to measurement input of servicer advances. Total Liabilities VIE liabilities Liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Currency [Axis] Currency [Axis] Income from affordable housing fund investments Income from affordable housing fund investments Investment Income, Net Percentage of pre-leased data center facilities Number Of Data Center Facilities, Pre-Leased, Percentage Number Of Data Center Facilities, Pre-Leased, Percentage Discount accretion/premium amortization Mortgage Loans On Real Estate Discount Accretion And Premium Amortization The amount of discount accretion and premium amortization on mortgage loans on real estate during the reporting period. Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Effect of dilutive securities - Unvested non-participating shares (in shares) Incremental Common Shares Attributable to Non-Participating Nonvested Shares Incremental Common Shares Attributable to Non-Participating Nonvested Shares Change in fair value of servicing rights Change In Fair Value Of Servicing Rights This item represents the total unrealized gain (loss) on servicing rights. Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Schedule of Share Awards Granted Under the Manager Equity Plan Schedule of Share Awards Granted to Manager as Incentive Compensation [Table Text Block] Tabular disclosure of share awards to manager as part of the incentive compensation due under the Management Agreement. Delayed Draw Term Loans Delayed Draw Term Loans [Member] Represents information pertaining to delayed draw term loans. Variable Interest Entities Variable Interest Entities Specific reserve related to amount of loans resolved during period Financing Receivable, Nonaccrual Loans Resolved, Specific Reserve, Amount Financing Receivable, Nonaccrual Loans Resolved, Specific Reserve, Amount Interest Rate Swaps Not Yet Effective Interest Rate Swaps Not Yet Effective [Member] Interest Rate Swaps Not Yet Effective Derivative liabilities, Gross Amounts Not Offset in the Statements of Financial Position, Financial Instruments Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Schedule of Intangibles Assets Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block] Variable Rate [Axis] Variable Rate [Axis] Consolidation Items [Axis] Consolidation Items [Axis] Purchases/fundings Purchase of Marketable Securities Total debt and equity financial instruments purchased during the period. Committed amount Line of Credit Facility, Committed Amount Line of Credit Facility, Committed Amount Counterparty Name [Axis] Counterparty Name [Axis] RMBS, available-for-sale Fair Value Available-for-sale securities Debt Securities, Available-for-Sale Net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Number of commercial loans Related Party Transaction, Number Of Commercial Loans Related Party Transaction, Number Of Commercial Loans