Summary of Secured Credit Agreements Secured by Mortgage Loan Investments, CRE Debt Securities and Counterparty Concentration Risks (Parenthetical) (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2022	Dec. 31, 2021
Repurchase Agreement Counterparty [Line Items]
Accrued interest payable	[1]	$ 3,269	$ 2,723
Commercial Mortgage Loans
Repurchase Agreement Counterparty [Line Items]
Interest receivable		9,300	8,000
Premium, discount and origination fees		7,200	8,800
Accrued interest payable		1,200	1,100
Unamortized deferred financing fees		$ 5,100	$ 4,000

[1] The Company’s consolidated Total Assets and Total Liabilities as of March 31, 2022 include assets and liabilities of variable interest entities (“VIEs”) of $3.4 billion and $2.8 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.