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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 | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
MSR held directly | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service | $ 88 | $ 90
MSR held directly | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service | 108 | 103
MSR held directly | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service | $ 94 | 96
Interests in MSR | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service |  | 78
Interests in MSR | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service |  | 84
Interests in MSR | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service |  | $ 81
Discount rate | MSR held directly | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.066 | 0.033
Discount rate | MSR held directly | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.095 | 0.111
Discount rate | MSR held directly | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.087 | 0.070
Discount rate | Interests in MSR | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.084
Discount rate | Interests in MSR | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.084
Discount rate | Interests in MSR | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.084
Prepayment rate | MSR held directly | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.048 | 0.073
Prepayment rate | MSR held directly | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.080 | 0.159
Prepayment rate | MSR held directly | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.053 | 0.094
Prepayment rate | Interests in MSR | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.050
Prepayment rate | Interests in MSR | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.144
Prepayment rate | Interests in MSR | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.091
Delinquency rate | MSR held directly | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.001 | 0.002
Delinquency rate | MSR held directly | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.041 | 0.025
Delinquency rate | MSR held directly | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.009 | 0.012
Delinquency rate | Interests in MSR | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.000
Delinquency rate | Interests in MSR | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs |  | 0.002
Delinquency rate | Interests in MSR | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
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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