Loans Held for Investment and the Allowance for Credit Losses - Summary of Aging Analysis for Loans Held for Investment Portfolio by Class of Loans (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	[1]	$ 4,547,594	$ 4,978,674
Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,547,594	4,978,674
Subordinated and mezzanine loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,547,594
Current
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,062,563	4,541,692
Current | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,062,563	4,541,692
Days: 30-59
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		129,198	365,713
Days: 30-59 | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		129,198	365,713
Days: 60-89
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		0	0
Days: 60-89 | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		0	0
Days: 90 or more
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		355,833	71,269
Days: 90 or more | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		355,833	71,269
Total loans past due
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		485,031	436,982
Total loans past due | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		$ 485,031	$ 436,982

[1] The Company’s consolidated Total Assets and Total Liabilities as of June 30, 2023 include assets and liabilities of variable interest entities (“VIEs”) of $2.8 billion and $2.1 billion, respectively. The Company’s consolidated Total Assets and Total Liabilities as of December 31, 2022 include assets and liabilities of VIEs of $3.3 billion and $2.5 billion, respectively. These assets can be used only to satisfy obligations of the VIEs, and creditors of the VIEs have recourse only to these assets, and not to TPG RE Finance Trust, Inc. See Note 5 to the Consolidated Financial Statements for details.(2)Includes $28.0 million and $17.3 million of reserve for expected losses for unfunded loan commitments as of June 30, 2023 and December 31, 2022, respectively.