Variable Interest Entities and Collateralized Loan Obligations - Summary of Variable Interest Entities Assets and Liabilities (Details) $ in Thousands		6 Months Ended	12 Months Ended
		Jun. 30, 2022 USD ($) loan	Dec. 31, 2021 USD ($)
Assets
Cash and cash equivalents	[1]	$ 355,994	$ 260,635
Collateralized loan obligation proceeds held at trustee	[1]	130,908	204
Accounts receivable from servicer/trustee	[1]	259,823	176
Loans held for investment, net	[1]	4,617,254	4,867,203
Total assets	[1]	5,395,089	5,218,020
Liabilities
Accrued interest payable	[1]	4,300	2,723
Collateralized loan obligations, net	[1]	2,639,314	2,545,691
Payable to affiliates	[1]	11,039	5,609
Total liabilities	[1]	3,953,161	3,753,314
Loans held for investment	[1]	4,701,410	4,909,202
Unamortized deferred financing costs		12,600	10,300
FL5 Securities | Collateralized loan obligations
Liabilities
Cash available to acquire eligible assets		59,200
FL4 Securities
Liabilities
Cash available to acquire eligible assets			200
FL4 Securities | Collateralized loan obligations
Liabilities
Cash available to acquire eligible assets		71,700
TRTX 2022-FL5
Liabilities
Principal repayments of loans held for investment held by servicer/trustee, net		83,600
TRTX 2021-FL4
Liabilities
Principal repayments of loans held for investment held by servicer/trustee, net		150,500
TRTX 2019-FL3
Liabilities
Principal repayments of loans held for investment held by servicer/trustee, net		25,500
Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents		25,967	28,167
Collateralized loan obligation proceeds held at trustee		130,908	204
Accounts receivable from servicer/trustee		259,796	150
Accrued interest receivable		5,806	6,765
Loans held for investment, net		2,808,158	3,138,603
Total assets		3,230,635	3,173,889
Liabilities
Accrued interest payable		2,687	1,823
Accrued expenses		310	1,490
Collateralized loan obligations, net		2,639,314	2,545,691
Payable to affiliates		6,731	3,830
Total liabilities		$ 2,649,042	2,552,834
Number of loans held for investment | loan		1
Loans held for investment		$ 1,600	$ 100

[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.