Loans and leases receivable unpaid principal balance.

No definition available.

Name:	trtx_DebtInstrumentAmountRefinanced
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Balance Type:	debit
Period Type:	instant

- Definition

Debt Instrument, Reinvestment Period

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of secured credit facilities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Variable interest entities and collateralized loan obligation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt discount (premium).

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Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The net amount paid or received by the reporting entity associated with purchase (sale or collection) of loans receivable arising from the financing of goods and services.

+ References

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Variable Interest Entities and Collateralized Loan Obligations - Additional Information (Details) $ in Thousands					3 Months Ended	6 Months Ended
	Mar. 28, 2025 USD ($)	Feb. 16, 2022 USD ($)	Mar. 31, 2021 USD ($)	Oct. 25, 2019 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Mar. 17, 2025 USD ($) loan
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Additional loan participation interests contributed						$ 665,743	$ 73,523
TRTX 2025-FL6 \| TRTX 2025-FL6 \| Secured Debt
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Debt face amount	$ 1,100,000
Investment-grade bonds outstanding	962,500
Debt issuance discount	$ 2,400				$ 2,200	$ 2,200
TRTX 2021-FL4 \| TRTX 2021-FL4 \| Secured Debt
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Additional loan participation interests contributed					$ 59,900
TRTX 2019-FL3 \| TRTX 2019-FL3 \| Secured Debt
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Investment-grade bonds outstanding								$ 114,600
Unpaid principal balance refinanced								$ 143,000
Number of loans refinanced \| loan								3
Collateralized loan obligations \| TRTX 2025-FL6
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Reinvestment period	30 months
Deferred financing costs, including issuance, legal, and accounting related costs	$ 7,600
Collateralized loan obligations \| TRTX 2022-FL5
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Reinvestment period		24 months
Deferred financing costs, including issuance, legal, and accounting related costs		$ 6,500
Collateralized loan obligations \| TRTX 2021-FL4
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Reinvestment period			24 months
Deferred financing costs, including issuance, legal, and accounting related costs			$ 8,300
Collateralized loan obligations \| TRTX 2019-FL3
Variable Interest Entities And Collateralized Loan Obligation [Line Items]
Reinvestment period				24 months
Deferred financing costs, including issuance, legal, and accounting related costs				$ 7,800