DERIVATIVE INSTRUMENTS - Summary of Swaptions Outstanding (Details) - Notional - Long Positions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Long pay
Derivative [Line Items]
Current Underlying Notional	$ 2,500,000	$ 4,050,000
Weighted Average Underlying Fixed Rate	2.02%	2.00%
Weighted Average Years to Maturity	8 years 2 months 8 days	9 years 7 months 24 days
Weighted Average Months to Expiration	14 years 3 months 10 days	19 years 6 months
Long receive
Derivative [Line Items]
Current Underlying Notional	$ 750,000	$ 2,000,000
Weighted Average Underlying Fixed Rate	1.57%	1.47%
Weighted Average Years to Maturity	11 years 25 days	10 years 11 months 12 days
Weighted Average Months to Expiration	12 years 9 months 25 days	11 years 4 months 17 days