Represents the consecutive trading period as a basis for debt conversion.

No definition available.

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Namespace Prefix:	stwd_
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Period Type:	duration

- Definition

The amount of convertible debt's if-converted value.

+ References

No definition available.

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- Definition

The amount by which the convertible debt's if-converted value is less than its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ References

No definition available.

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- Definition

Represents the minimum number of conditions to be satisfied for conversion of debt.

+ References

No definition available.

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- Definition

Represents the minimum trading period as a basis for debt conversion.

+ References

No definition available.

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- Definition

Represents the percentage of conversion price and last reported sales price as a basis for debt conversion.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Represents the percentage of conversion price as a basis for debt conversion.

+ References

No definition available.

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

- Definition

Represents the percentage of per share value of distributions that exceeds the market price of the entity's common stock as a basis for debt conversion.

+ References

No definition available.

+ Details

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- Definition

Represents the period of average closing market price of common stock as a basis for debt conversion.

+ References

No definition available.

+ Details

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- Definition

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Period Type:	instant

- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

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Period Type:	instant

- Definition

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

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

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.

+ References

No definition available.

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Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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Balance Type:	na
Period Type:	instant

- Details

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Unsecured Senior Notes - Narrative (Details)	3 Months Ended
Unsecured Senior Notes - Narrative (Details)	Mar. 31, 2022 USD ($) Item $ / shares	Mar. 31, 2021 USD ($)	Jan. 25, 2022 USD ($)	Mar. 29, 2017 USD ($)
Unsecured Senior Notes
Interest expense	$ 126,451,000	$ 103,374,000
Closing share price (in dollars per share) \| $ / shares	$ 24.17
Minimum \| Conversion upon satisfaction of closing market price condition
Unsecured Senior Notes
Period of average closing market price of common stock as a basis for debt conversion	10 days
Convertible Senior Notes
Unsecured Senior Notes
Interest expense	$ 2,900,000	$ 2,900,000
Minimum number of conditions to be satisfied for conversion of debt \| Item	1
Convertible Senior Notes \| Conversion upon satisfaction of closing market price condition
Unsecured Senior Notes
Minimum trading period as a basis for debt conversion	20 days
Consecutive trading period as a basis for debt conversion	30 days
Convertible Senior Notes \| Conversion upon satisfaction of trading price condition
Unsecured Senior Notes
Consecutive trading period as a basis for debt conversion	5 days
Convertible Senior Notes \| Minimum \| Conversion upon satisfaction of closing market price condition
Unsecured Senior Notes
Percentage of per share value of distributions that exceeds the market price of the entity's common stock as a basis for debt conversion	10.00%
Convertible Senior Notes \| Maximum \| Conversion upon satisfaction of trading price condition
Unsecured Senior Notes
Percentage of conversion price and last reported sales price as a basis for debt conversion	98.00%
2027 Senior Notes
Unsecured Senior Notes
Amount issued			$ 500,000,000
Coupon Rate	4.375%		4.375%
2027 Senior Notes \| Redemption period one
Unsecured Senior Notes
Redemption percentage	100.00%
2027 Senior Notes \| Redemption period two
Unsecured Senior Notes
Redemption percentage	100.00%
2027 Senior Notes \| Redemption period three
Unsecured Senior Notes
Redemption percentage	40.00%
2023 Convertible Notes
Unsecured Senior Notes
Amount issued				$ 250,000,000
Coupon Rate	4.38%			4.375%
Amount by which if-converted value of the Notes are less than principal amount	$ 16,800,000
Conversion price (in dollars per share) \| $ / shares	$ 25.91
If-converted value	$ 233,200,000
Convertible notes carrying value	249,300,000
Convertible notes fair value	$ 252,400,000
2023 Convertible Notes \| Convertible Notes and Senior Notes \| Minimum \| Conversion upon satisfaction of closing market price condition
Unsecured Senior Notes
Percentage of conversion price as a basis for debt conversion	110.00%