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MORTGAGE BANKING OPERATIONS - Key Economic Assumptions (Details)	Dec. 31, 2024	Dec. 31, 2023
CPRs | Weighted Average
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.0660	0.0700
CPRs | Single family | Weighted Average
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1807	0.1489
CPRs | Single family | Minimum
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.0600	0.0680
CPRs | Single family | Maximum
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1350	0.3250
Discount Rates | Weighted Average
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1100	0.1000
Discount Rates | Single family | Weighted Average
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1023	0.1199
Discount Rates | Single family | Minimum
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1000	0.1000
Discount Rates | Single family | Maximum
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1700	0.1700
Discount Rates | Multifamily | Weighted Average
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1310	0.1300
Discount Rates | Multifamily | Minimum
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1300	0.1300
Discount Rates | Multifamily | Maximum
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs
Servicing asset, measurement input	0.1500	0.1500

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