Debt Instrument, Face Amount, Amount Funded

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- Definition

Debt Instrument, Face Amount, Percentage Of Origination

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- Definition

Debt Instrument, Face Amount, Percentage Of Origination, Third Party

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- Definition

Represents the minimum interest rate applicable to various debt instruments.

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- Definition

Financing Receivable, Number Of Mortgage Loans

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- Definition

Represents the number of shares acquired in the equity security investment.

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Investment In Equity Securities Number Of Shares Redeemed

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Investment In Equity Securities Number Of Shares Redeemed, Proceeds

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- Definition

Investment In Equity Securities Percentage Ownership Acquired

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- Definition

Investment Securities Value At Acquisition

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- Definition

Loan Payable, Conditional Extension Term

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Loan Payable, Extension Term

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Loan Payable, Number Of Extension Options

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Loan Payable, Payment Deferral Interest Rate

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Loan Payable, Payment Deferral Term

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- Definition

Loans Payable, Basis Spread

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Loans Payable, Interest Rate Increase (Decrease)

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- Definition

Mortgage Loans On Real Estate, Number Of Cross-Collateralized Facilities

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Amount of the contractual principal due as of the balance sheet date.

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- Definition

Number Of Co-Originated Loans, Minority Lender Amount

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- Definition

Number Of Data Center Facilities

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Number Of Data Center Facilities, Pre-Leased, Percentage

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- Definition

Number Of Related-Party Loan Transactions

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- Definition

Number Of Units

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- Definition

Related Party Transaction, Number Of Commercial Loans

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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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.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Number of shares of investment owned.

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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- Definition

Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Percentage added to reference rate used to compute variable rate on loan receivable.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Amount of transactions with related party during the financial reporting period.

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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.

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Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

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Related-Party Transactions - Investments in Loans and Securities (Details) $ in Thousands	1 Months Ended									3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) mortgageLoan extension facility	Feb. 28, 2026 USD ($)	Jun. 30, 2025 USD ($) extension	May 31, 2025 USD ($)	Jan. 31, 2025 USD ($) unit	Dec. 31, 2024 USD ($) loan	May 31, 2024 USD ($) extension	Jul. 31, 2023	Dec. 31, 2012 USD ($) shares	Mar. 31, 2026 USD ($) loan transaction mortgageLoan data_center facility shares	Mar. 31, 2025 USD ($)	Dec. 31, 2012 USD ($) shares	Dec. 31, 2025 USD ($) shares	Jul. 31, 2024 USD ($)	Mar. 31, 2022 USD ($)
Related-Party Transactions
Number of related-party loan transactions \| transaction										9
Unpaid principal balance	$ 22,332,397									$ 22,332,397			$ 21,922,738
Percentage of pre-leased data center facilities										100.00%
Loss on extinguishment of debt										$ 335	$ 0
Loans held-for-investment	$ 19,281,560									$ 19,281,560			$ 18,862,712
Basis spread on variable rate	3.40%									3.40%
SEREF
Related-Party Transactions
Number of shares acquired (in shares) \| shares												9,140,000
Remaining held (in shares) \| shares													536,129
Number of shares redeemed (in shares) \| shares										536,129
Proceeds from shares redeemed										$ 600
Affiliated Entity \| SEREF
Related-Party Transactions
Number of shares acquired (in shares) \| shares									9,140,000
Investment securities value at acquisition									$ 14,700			$ 14,700
Investment in equity securities percentage ownership acquired									4.00%
Remaining held (in shares) \| shares													536,129
Number of shares redeemed (in shares) \| shares										536,129
Proceeds from shares redeemed										$ 600
Affiliated Entity \| Starwood European Real Estate Debt Finance II LP
Related-Party Transactions
Unpaid principal balance	$ 3,500									3,500
Collateralized Loan, Diversified Portfolio of Logistics Assets \| Affiliated Entity \| First mortgage loan participation
Related-Party Transactions
Unpaid principal balance	$ 969,200									$ 969,200
Number of cross-collateralized facilities \| facility	3									3
Construction of Data Center in Herndon
Related-Party Transactions
Number of data center facilities \| data_center										4
Number of co-originated loans we are minority lender on \| loan										3
33.33% Origination Loan \| Affiliated Entity \| Affiliates Of Manager \| Borrower
Related-Party Transactions
Limited partnership interest				92.50%
Construction of Luxury Condominium Project \| Affiliated Entity \| Affiliates Of Manager \| Borrower
Related-Party Transactions
Limited partnership interest					90.00%
Development and Recapitalization of Luxury Rental Cabins \| Affiliated Entity
Related-Party Transactions
Loan extension term						24 months
Conditional extension term						1 year
Decrease in interest rate						2.25%
Loans payable, basis spread						4.25%
Loan payable, payment deferral term								10 months
Loan payable, payment deferral interest rate								3.00%
Loans payable	$ 147,500									$ 147,500
Sale of Participating Interests in Commercial Loans to Private Investment Fund \| Affiliated Entity
Related-Party Transactions
Number of commercial loans \| loan						4
Amounts of transaction						$ 40,100
Future Funding Commitments \| Affiliated Entity
Related-Party Transactions
Amounts of transaction						$ 15,900
Fees Received \| Affiliated Entity
Related-Party Transactions
Amounts of transaction										100	$ 100
Refinancing of Medical Office Portfolio \| Affiliated Entity
Related-Party Transactions
Loan number of extension options \| extension							3
Loan extension term							1 year
Loans payable, basis spread							5.50%
Purchase of FREMF 2024-KF163 \| Affiliated Entity \| Primary Beneficiary
Related-Party Transactions
Loans held-for-investment														$ 77,100
Basis spread on variable rate														6.00%
Newly Formed FREMF 2024-KF163 Trust \| Affiliated Entity \| Primary Beneficiary
Related-Party Transactions
Loans held-for-investment	$ 949,000									$ 949,000
Number of mortgage loans \| mortgageLoan	23									23
Newly Formed FREMF 2024-KF163 Trust \| Affiliates Of Manager \| Primary Beneficiary
Related-Party Transactions
Loans held-for-investment	$ 495,000									$ 495,000
Number of mortgage loans \| mortgageLoan	11									11
Loans Payable \| Lotus Infrastructure Partners, Domestic Natural Gas Power Plant \| Affiliated Entity
Related-Party Transactions
Face amount	$ 150,000									$ 150,000
Initial term	5 years
Pricing margin (as a percent)	3.50%
Loans Payable \| Collateralized Loan, Diversified Portfolio of Logistics Assets \| Affiliated Entity
Related-Party Transactions
Face amount	$ 347,300									347,300
Loans Payable \| 24.5% Origination Loan \| Affiliated Entity
Related-Party Transactions
Face amount	$ 653,000									$ 653,000
Initial term	4 years
Pricing margin (as a percent)	2.70%
Percentage of origination of loan	24.50%									24.50%
Amount funded	$ 30,100									$ 30,100
Loan number of extension options \| extension	2
Loan extension term	1 year
Percentage of loan originated by third party	51.00%									51.00%
Loans Payable \| 24.5% Origination Loan \| Affiliated Entity \| Starwood Property Trust Inc
Related-Party Transactions
Face amount	$ 160,000									$ 160,000
Loans Payable \| 24.5% Origination Loan \| Related Party
Related-Party Transactions
Percentage of loan originated by third party	24.50%									24.50%
Loans Payable \| 49% Origination Loan \| Affiliated Entity
Related-Party Transactions
Face amount			$ 587,100
Initial term			4 years
Pricing margin (as a percent)			3.00%
Percentage of origination of loan			49.00%
Amount funded	$ 66,400									$ 66,400
Loan number of extension options \| extension			2
Loan extension term			1 year
Percentage of loan originated by third party			51.00%
Loans Payable \| 49% Origination Loan \| Affiliated Entity \| Starwood Property Trust Inc
Related-Party Transactions
Face amount			$ 287,700
Loans Payable \| 33.33% Origination Loan \| Affiliated Entity
Related-Party Transactions
Face amount				$ 638,500
Initial term				5 years
Pricing margin (as a percent)				2.50%
Percentage of origination of loan				33.33%
Amount funded	156,900									156,900
Percentage of loan originated by third party				66.67%
Floor interest rate (as a percent)				2.00%
Loans Payable \| 33.33% Origination Loan \| Affiliated Entity \| Starwood Property Trust Inc
Related-Party Transactions
Face amount				$ 212,800
Loans Payable \| Construction of Luxury Condominium Project \| Affiliated Entity
Related-Party Transactions
Face amount					$ 388,400
Initial term					4 years
Pricing margin (as a percent)					4.25%
Percentage of origination of loan					49.00%
Amount funded	$ 82,600									82,600
Loan extension term					1 year
Percentage of loan originated by third party					51.00%
Floor interest rate (as a percent)					3.00%
Number of units \| unit					81
Loans Payable \| Construction of Luxury Condominium Project \| Affiliated Entity \| Starwood Property Trust Inc
Related-Party Transactions
Face amount					$ 190,300
Loans Payable \| Development and Recapitalization of Luxury Rental Cabins \| Affiliated Entity
Related-Party Transactions
Face amount													$ 25,000		$ 200,000
Loans Payable \| Refinancing of Medical Office Portfolio \| Affiliated Entity
Related-Party Transactions
Face amount							$ 39,500
Initial term							2 years
Repayments of debt		$ 39,500
Loss on extinguishment of debt										$ 300
MED 2024-MOB \| Secured Borrowings \| Refinancing of Medical Office Portfolio \| Affiliated Entity
Related-Party Transactions
Face amount							$ 450,500
Horizontal Risk Retention Certificates \| Refinancing of Medical Office Portfolio \| Affiliated Entity
Related-Party Transactions
Face amount							$ 23,000