USE OF SPECIAL PURPOSE ENTITIES AND VARIABLE INTEREST ENTITIES - Narrative (Details)	Jun. 14, 2021 USD ($) subsidiary tranche
Variable Interest Entity [Line Items]
Number of wholly-owned subsidiaries \| subsidiary	2
Equity interest retained	$ 96,250,000
Proceeds from issuance of long-term debt allocated to acquire additional loan obligations	$ 330,300,000
Period to acquire additional loan obligations from closing date	180 days
Collateralized loan obligation leverage ratio, percent	0.83
Collateralized Loan Obligations - LFT CRE 2021-FL1, Ltd.
Variable Interest Entity [Line Items]
Number of tranches of CLO notes issued \| tranche	8
Aggregate principal of CLO notes	$ 903,800,000
Reinvestment period for collateralized loan obligation	2 years 6 months
Proceeds from issuance of collateralized loan obligations	$ 1,000,000,000
Collateralized Loan Obligations - LFT CRE 2021-FL1, Ltd. - Investment Grade
Variable Interest Entity [Line Items]
Aggregate principal of CLO notes	833,800,000
Collateralized Loan Obligations - LFT CRE 2021-FL1, Ltd. - Below Investment Grade
Variable Interest Entity [Line Items]
Aggregate principal of CLO notes	70,000,000
Collateralized Loan Obligations - Hunt CRE 2017-FL1, Ltd. and Hunt CRE 2018-FL2, Ltd.
Variable Interest Entity [Line Items]
Outstanding notes redeemed	388,200,000
Write off of deferred debt issuance cost	$ 1,700,000

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