Investment Portfolio Financing - Additional Information (Details) $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
		Feb. 22, 2022 USD ($) lender	Jun. 30, 2023 USD ($) loan	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) loan Agreement	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) loan Agreement	Jun. 06, 2023 loan	Nov. 17, 2022 USD ($)	Sep. 01, 2022 USD ($)	Apr. 11, 2022 USD ($)	Apr. 10, 2022 USD ($)
Debt Instrument [Line Items]
Amortization of deferred financing costs					$ 7,437	$ 7,400
Term extension								3 years
Number of credit facilities | loan								5
Number of performing first mortgage loans | loan			63		63		70
Loan Pledged As Collateral
Debt Instrument [Line Items]
Aggregate collateral principal balance							$ 59,800
Number of loan investments | loan							1
Secured revolving credit facility
Debt Instrument [Line Items]
Maximum commitment amount		$ 250,000					$ 290,000
Number of lenders provided credit facility | lender		5
Credit facility term		3 years
Percentage of unused fee (in basis points)			0.19%	0.20%	0.19%	0.20%
Unused fee, Target utilization percent (in percent)		50.00%
Maximum period permits to finance eligible loans		180 days
Initial advance rate (in percent)		75.00%
Outstanding borrowings							$ 44,300
Secured revolving credit facility | Minimum
Debt Instrument [Line Items]
Percentage of unused fee (in basis points)		0.15%
Secured revolving credit facility | Maximum
Debt Instrument [Line Items]
Percentage of unused fee (in basis points)		0.20%
SOFR | Secured revolving credit facility
Debt Instrument [Line Items]
Interest Payment Rates		2.00%
Secured credit agreements
Debt Instrument [Line Items]
Number of secured credit agreements | Agreement					6		6
Recourse guarantee percentage					25.00%
Payments on secured financing					$ 522,420	$ 871,970
Aggregate collateral principal balance											$ 500,000	$ 750,000
Asset-specific financing arrangements
Debt Instrument [Line Items]
Payments on secured financing					80,292	0
Collateralized loan obligations, net	[1]		$ 490,581		$ 490,581		$ 561,017
Asset-specific financing arrangements | Office Property Mortgage Loan
Debt Instrument [Line Items]
Credit facility term					2 years
Asset-specific financing arrangements | BMO Facility
Debt Instrument [Line Items]
Maximum commitment amount				$ 200,000		$ 200,000
Asset-specific financing arrangements | BMO Facility | Office Property Mortgage Loan
Debt Instrument [Line Items]
Number of asset-specific financing arrangements | loan			1		1		1
Number of performing first mortgage loans | loan			1		1		2
Asset-specific financing arrangements | Institutional Lender 2
Debt Instrument [Line Items]
Maximum commitment amount										$ 397,900
Asset-specific financing arrangements | Institutional Lender 2 | Office Property Mortgage Loan
Debt Instrument [Line Items]
Number of asset-specific financing arrangements | loan			1		1		1
Number of performing first mortgage loans | loan			4		4		5
Asset-specific financing arrangements | Customers Bank
Debt Instrument [Line Items]
Maximum commitment amount									$ 23,300
Asset-specific financing arrangements | Customers Bank | Office Property Mortgage Loan
Debt Instrument [Line Items]
Number of asset-specific financing arrangements | loan			1		1		1
Number of performing first mortgage loans | loan			1		1		1
Mortgage loan payable
Debt Instrument [Line Items]
Credit facility term					5 years
Aggregate collateral principal balance			$ 31,200		$ 31,200
Collateralized loan obligations, net	[1]		$ 30,475		$ 30,475		$ 0
Mortgage loan payable | LIBOR
Debt Instrument [Line Items]
Interest rate (in percent)			7.70%		7.70%
Holdco | Secured revolving credit facility
Debt Instrument [Line Items]
Recourse guarantee percentage		100.00%
Holdco | Secured credit agreements
Debt Instrument [Line Items]
Recourse guarantee percentage					25.00%		25.00%
Holdco | Asset-specific financing arrangements
Debt Instrument [Line Items]
Recourse guarantee percentage						25.00%
Holdco | Asset-specific financing arrangements | Office Property Mortgage Loan
Debt Instrument [Line Items]
Recourse guarantee percentage					15.00%
Commercial Mortgage Loans | Secured credit agreements
Debt Instrument [Line Items]
Number of secured credit facilities | loan					38		45
Company transfers rights to counter party with option to buy back | Secured credit agreements
Debt Instrument [Line Items]
Number of secured credit agreements | loan					5
After 90 days from initial borrowing | Secured revolving credit facility
Debt Instrument [Line Items]
Initial advance rate (in percent)		65.00%
After 135 days from initial borrowing | Secured revolving credit facility
Debt Instrument [Line Items]
Initial advance rate (in percent)		45.00%
After 180 days from initial borrowing | Secured revolving credit facility
Debt Instrument [Line Items]
Initial advance rate (in percent)		0.00%

[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.