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MORTGAGE BANKING OPERATIONS - Key Economic Assumptions (Details) - Single family	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques
Servicing asset, measurement input	15.13%	13.06%	14.20%	10.72%
Discount rate
Fair Value Measurement Inputs and Valuation Techniques
Servicing asset, measurement input	11.70%	10.36%	10.83%	9.19%

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