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FAIR VALUE MEASUREMENTS - Information about Significant Unobservable Inputs Used for Recurring Fair Value Measurements for Level 3 MSRs (Detail) - Fair Value, Measurements, Recurring - Level 3 | 12 Months Ended
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Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Mortgage Servicing Rights | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
Cost to service | $ 86 | $ 90
Mortgage Servicing Rights | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
Cost to service | 118 | 103
Mortgage Servicing Rights | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
Cost to service | $ 95 | 96
Interests in MSR | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
Cost to service |  | 78
Interests in MSR | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
Cost to service |  | 84
Interests in MSR | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
Cost to service |  | $ 81
Discount rate | Mortgage Servicing Rights | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.084 | 0.033
Discount rate | Mortgage Servicing Rights | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.107 | 0.111
Discount rate | Mortgage Servicing Rights | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.097 | 0.070
Discount rate | Interests in MSR | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.084
Discount rate | Interests in MSR | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.084
Discount rate | Interests in MSR | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.084
Prepayment rate | Mortgage Servicing Rights | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.048 | 0.073
Prepayment rate | Mortgage Servicing Rights | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.081 | 0.159
Prepayment rate | Mortgage Servicing Rights | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.054 | 0.094
Prepayment rate | Interests in MSR | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.050
Prepayment rate | Interests in MSR | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.144
Prepayment rate | Interests in MSR | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.091
Delinquency rate | Mortgage Servicing Rights | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.002 | 0.002
Delinquency rate | Mortgage Servicing Rights | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.045 | 0.025
Delinquency rate | Mortgage Servicing Rights | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs | 0.013 | 0.012
Delinquency rate | Interests in MSR | Minimum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.000
Delinquency rate | Interests in MSR | Maximum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.002
Delinquency rate | Interests in MSR | Weighted Average |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31) |  |
MSR measurement inputs |  | 0.001

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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