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, 2022	Dec. 31, 2021
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	[1]	$ 4,701,410	$ 4,909,202
Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,666,410	4,874,242
Subordinated and mezzanine loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		35,000	34,960
Current
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,678,410	4,886,202
Current | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		4,643,410	4,851,242
Current | Subordinated and mezzanine loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		35,000	34,960
Days: 30-59
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		0	0
Days: 30-59 | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		0	0
Days: 30-59 | Subordinated and mezzanine loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		0	0
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: 60-89 | Subordinated and mezzanine 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		23,000	23,000
Days: 90 or more | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		23,000	23,000
Days: 90 or more | Subordinated and mezzanine loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		0	0
Total loans past due
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		23,000	23,000
Total loans past due | Senior loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		23,000	23,000
Total loans past due | Subordinated and mezzanine loans
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment		$ 0	$ 0

[1] The Company’s consolidated Total Assets and Total Liabilities as of June 30, 2022 include assets and liabilities of variable interest entities (“VIEs”) of $3.2 billion and $2.6 billion, respectively. The Company’s consolidated Total Assets and Total Liabilities as of December 31, 2021 include assets and liabilities of VIEs of $3.2 billion and $2.6 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.