MORTGAGE SERVICING RIGHTS AND MSR FINANCING RECEIVABLES - Schedule of Servicing Fee Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Contractually Specified Servicing Fee Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue
Ancillary Fee Income, Servicing Financial Asset, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenue
Change in valuation inputs and assumptions, net of realized gains (losses)	$ 390,240
Excess spread financing	1,200
Change in valuation and assumptions, excess spread financing	(4,800)
MSRs
Schedule of Investments in Mortgage Servicing Rights [Line Items]
Servicing fee revenue, net and interest income from MSRs and MSR financing receivables	526,810	$ 430,114
Ancillary and other fees	43,991	39,777
Servicing fee revenue, net and fees	570,801	469,891
Amortization of Mortgage Servicing Rights (MSRs)	(146,891)	(116,839)
Change in valuation inputs and assumptions, net of realized gains (losses)	(395,025)	201,014
Servicing revenue, net	$ 28,885	$ 554,066

Amortization Of Mortgage Servicing Rights (MSRs), Excess Spread Financing

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- Definition

Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset, Net Of Change In Fair Value

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No definition available.

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- Definition

Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets, Gross

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No definition available.

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- Definition

[Line Items] for Schedule of Investments in Mortgage Servicing Rights [Table]

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No definition available.

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- Definition

Servicing Asset At Fair Value, Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions, Excess Spread Financing

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No definition available.

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- Definition

The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-4

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- Definition

All amounts that are due to the servicer of a financial asset, excluding contractually specified servicing fees and late fees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-2

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- Definition

Indicates line item in statement of income or comprehensive income that includes ancillary fee income from servicing financial asset.

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- Definition

Indicates line item in statement of income or comprehensive income that includes contractually specified servicing fee income.

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- Definition

All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset.

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- Definition

Amount of increase (decrease) in fair value from changes in the inputs, assumptions, or model used to calculate the fair value of the contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-3

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