Variable Interest Entities and Collateralized Loan Obligations - Summary of Variable Interest Entities Assets and Liabilities (Details) $ in Thousands		Jun. 30, 2023 USD ($) loan	Dec. 31, 2022 USD ($)
Assets
Cash and cash equivalents	[1]	$ 307,445	$ 254,050
Collateralized loan obligation proceeds held at trustee	[1]	194,059	297,168
Accounts receivable from servicer/trustee	[1]	83,489	163,648
Total assets	[1]	4,983,721	5,545,138
Liabilities
Accrued interest payable	[1]	10,468	11,080
Total liabilities	[1]	3,764,141	4,223,142
Unamortized deferred financing costs		6,600	9,000
Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents		32,251	28,011
Collateralized loan obligation proceeds held at trustee		194,059	297,168
Accounts receivable from servicer/trustee		83,462	156,633
Accrued interest receivable		2,736	5,584
Loans held for investment, net		2,474,839	2,779,978
Total assets		2,787,347	3,267,374
Liabilities
Accrued interest payable		6,103	6,106
Accrued expenses		399	761
Collateralized loan obligations, net		2,136,382	2,452,212
Total liabilities		$ 2,142,884	2,467,254
Number of loans held for investment | loan		3
Loans held for investment		$ 3,200	2,900
Variable Interest Entity, Primary Beneficiary | FL5 Securities
Assets
Collateralized loan obligation proceeds held at trustee		194,100	72,500
Accounts receivable from servicer/trustee		12,700
Variable Interest Entity, Primary Beneficiary | FL4 Securities
Assets
Collateralized loan obligation proceeds held at trustee			224,700
Accounts receivable from servicer/trustee		61,400
Variable Interest Entity, Primary Beneficiary | TRTX 2019-FL3
Assets
Accounts receivable from servicer/trustee		9,100	155,200
Affiliated Entity
Liabilities
Payable to affiliates	[1]	5,949	5,984
Affiliated Entity | Variable Interest Entity, Primary Beneficiary
Liabilities
Payable to affiliates		$ 0	$ 8,175

[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.