Debt Instrument, Extension Term

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance purchased by third part investors.

+ References

No definition available.

+ Details

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Namespace Prefix:	stwd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Initial Term

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, New Contribution Period

+ References

No definition available.

+ Details

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Namespace Prefix:	stwd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Number Of Extension Options

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
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-Topic 942
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-Name Accounting Standards Codification
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-Topic 470
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-Section 50
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-Publisher FASB
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

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-Topic 470
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
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-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Events (Details)	May 08, 2024 USD ($) option	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jul. 31, 2021 USD ($)
Subsequent Events
Principal amount of notes purchased by third-party investors				$ 210,100,000
Secured Borrowings
Subsequent Events
Long term debt, gross		$ 12,625,490,000	$ 13,948,828,000
Financing
Subsequent Events
Face amount		3,231,326,000	$ 3,500,163,000
Subsequent Event \| Secured Borrowings \| Medical Office Portfolio
Subsequent Events
Initial term	2 years
Number of extension options \| option	3
Extension term	1 year
Subsequent Event \| SOFR \| Secured Borrowings \| Medical Office Portfolio
Subsequent Events
Weighted average coupon rate	2.52%
Collateralized Loan Obligations, STWD 2024-FL3 \| Subsequent Event
Subsequent Events
Face amount	$ 400,000,000
Principal amount of notes purchased by third-party investors	$ 330,000,000
CLO contribution period	3 years
Collateralized Loan Obligations, STWD 2024-FL3 \| Subsequent Event \| Financing \| SOFR
Subsequent Events
Weighted average coupon rate	2.18%
First Mortgage and Mezzanine \| Secured Borrowings
Subsequent Events
Long term debt, gross		$ 600,000,000
First Mortgage and Mezzanine \| Subsequent Event \| Secured Borrowings \| Medical Office Portfolio
Subsequent Events
Long term debt, gross	$ 600,000,000
Senior Securitized Mortgage Debt \| Subsequent Event \| Secured Borrowings \| Medical Office Portfolio
Subsequent Events
Long term debt, gross	450,500,000
Mezzanine Loans \| Subsequent Event \| Secured Borrowings \| Medical Office Portfolio
Subsequent Events
Long term debt, gross	$ 39,500,000