REAL ESTATE AND OTHER SECURITIES - Narrative (Details) - Agency - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Face amount of securities purchased, unsettled	$ 738.4	$ 0.0
Payments for securities purchased, unsettled	730.0
Face amount of securities sold	490.8
Proceeds of securities sold, unsettled	$ 471.6