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MORTGAGE BANKING OPERATIONS - Key Economic Assumptions (Details) | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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CPRs | Weighted Average |  |  |
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs |  |  |
Servicing asset, measurement input | 0.0700 | 0.0819 |
CPRs | Single family | Weighted Average |  |  |
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs |  |  |
Servicing asset, measurement input | 0.1489 | 0.1091 | 0.0884
CPRs | Single family | Minimum |  |  |
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs |  |  |
Servicing asset, measurement input | 0.0680 | 0.0601 |
CPRs | Single family | Maximum |  |  |
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs |  |  |
Servicing asset, measurement input | 0.3250 | 0.1110 |
Discount Rates | Weighted Average |  |  |
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs |  |  |
Servicing asset, measurement input | 0.1000 | 0.1066 |
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 | 0.1199 | 0.0935 | 0.0823
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 | 0.0974 |
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 | 0.1688 |
Discount Rates | Multifamily | Weighted Average |  |  |
Key economic assumptions and the sensitivity of the current fair valu for single family MSRs |  |  |
Servicing asset, measurement input | 0.1300 | 0.1300 | 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 | 0.1300 | 0.1300 |

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- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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