Loans Held for Investment and the Allowance for Credit Losses - Schedule of Loans Held for Investment Portfolio by Loan Seniority (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Loans And Leases Receivable Disclosure [Line Items]
Outstanding principal		$ 4,710,161	$ 4,919,343
Unamortized premium (discount) and loan origination fees, net		(8,751)	(10,141)
Amortized cost	[1]	4,701,410	4,909,202
Allowance for credit losses	[1]	(84,156)	(41,999)
Loans held for investment, net	[1]	4,617,254	4,867,203
Senior loans
Loans And Leases Receivable Disclosure [Line Items]
Outstanding principal		4,675,161	4,884,343
Unamortized premium (discount) and loan origination fees, net		(8,751)	(10,101)
Amortized cost		4,666,410	4,874,242
Subordinated and mezzanine loans
Loans And Leases Receivable Disclosure [Line Items]
Outstanding principal		35,000	35,000
Unamortized premium (discount) and loan origination fees, net		0	(40)
Amortized cost		$ 35,000	$ 34,960

[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.