VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2020
Variable Interest Entity [Line Items]
Securitized debt of consolidated VIEs	$ 19,540,678	$ 11,600,338
Costs incurred in connection with securitization	171,356	162,553	$ 162,729
Unrealized gains (losses) on debt held by third parties	3,500	(305,200)
Participations issued	1,154,816	1,103,835
Consolidated VIEs
Variable Interest Entity [Line Items]
Exposure to obligations of VIEs	2,300,000
Securitized debt of consolidated VIEs	19,500,000	11,600,000
Costs incurred in connection with securitization	20,300	8,200
Contractual principal amount of debt held by third parties	20,500,000	12,600,000
Consolidated VIEs | Multifamily
Variable Interest Entity [Line Items]
Cut-off date principal balance				$ 500,000
Derecognized securities			424,000
Derecognized securitization vehicles			391,900
Net gains (losses) on disposal of investments and other			$ 33,400
Consolidated VIEs | Multifamily | Retained Interest
Variable Interest Entity [Line Items]
Retained interest notional balance				$ 500,000
Consolidated VIEs | Consolidation, Eliminations
Variable Interest Entity [Line Items]
Estimated fair value	2,300,000	1,400,000
VIE, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Participations issued	$ 1,200,000	$ 1,100,000