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SECURITIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Unrealized gains (losses) on Agency mortgage-backed securities	$ (1,308,948)	$ (615,216)	$ (1,307,236)	$ (775,020)
Residential Investment securities sold, carrying value	8,400,000	$ 6,600,000	13,600,000	$ 9,400,000
Agency
Debt Securities, Available-for-sale [Line Items]
Unrealized gains (losses) on Agency mortgage-backed securities	$ (744,700)		$ 358,000

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