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SECURITIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Unrealized gains (losses) on agency mortgage-backed securities	$ (2,713,126)	$ (2,702,512)	$ (4,020,362)	$ (3,477,532)
Residential Investment securities sold, carrying value	6,900,000	$ 11,600,000	20,500,000	$ 21,000,000
Agency
Debt Securities, Available-for-sale [Line Items]
Unrealized gains (losses) on agency mortgage-backed securities	$ (2,000,000)		$ (2,400,000)

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