MORTGAGE SERVICING RIGHTS AND MSR FINANCING RECEIVABLES (AS RESTATED) - Schedule of MSRs and MSR Financing Receivables by Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Servicing Asset at Amortized Cost [Line Items]
Weighted Average Life (Years)	3 years 7 months 6 days
Carrying Value	$ 8,706,723	$ 8,405,938
Residential mortgage loans subject to repurchase	1,845,889	$ 1,782,998	$ 1,189,907
Mortgage Servicing Rights and Mortgage Servicing Rights Financing Receivable
Servicing Asset at Amortized Cost [Line Items]
UPB of Underlying Residential Mortgage Loans	$ 526,673,826
Weighted Average Life (Years)	7 years 6 months
Carrying Value	$ 8,706,723
MSRs | Weighted Average
Servicing Asset at Amortized Cost [Line Items]
Discount rate	8.50%
MSRs | Minimum
Servicing Asset at Amortized Cost [Line Items]
Discount rate	7.90%
MSRs | Maximum
Servicing Asset at Amortized Cost [Line Items]
Discount rate	10.80%
Agency | MSRs
Servicing Asset at Amortized Cost [Line Items]
UPB of Underlying Residential Mortgage Loans	$ 348,953,092
Weighted Average Life (Years)	7 years 9 months 18 days
Carrying Value	$ 5,477,522
Non-Agency | MSRs
Servicing Asset at Amortized Cost [Line Items]
UPB of Underlying Residential Mortgage Loans	$ 47,806,353
Weighted Average Life (Years)	6 years 9 months 18 days
Carrying Value	$ 666,958
Ginnie Mae | MSRs
Servicing Asset at Amortized Cost [Line Items]
UPB of Underlying Residential Mortgage Loans	$ 129,914,381
Weighted Average Life (Years)	7 years 2 months 12 days
Carrying Value	$ 2,562,243