Loans Held for Investment and the Allowance for Credit Losses - Summary of Amortized Cost and Results of Internal Risk Rating Review Performed for Loans Held for Investment Portfolio (Details) $ in Thousands		Jun. 30, 2022 USD ($) rating	Dec. 31, 2021 USD ($) rating
Accounts Notes And Loans Receivable [Line Items]
Carrying Value, Gross	[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
Weighted average risk rating | rating		3.2	3.0
1
Accounts Notes And Loans Receivable [Line Items]
Carrying Value, Gross		$ 0	$ 0
2
Accounts Notes And Loans Receivable [Line Items]
Carrying Value, Gross		349,628	527,051
3
Accounts Notes And Loans Receivable [Line Items]
Carrying Value, Gross		3,304,956	3,726,753
4
Accounts Notes And Loans Receivable [Line Items]
Carrying Value, Gross		968,094	632,398
5
Accounts Notes And Loans Receivable [Line Items]
Carrying Value, Gross		$ 78,732	$ 23,000

[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.