RESIDENTIAL MORTGAGE LOANS - Schedule of Components of Gain on Originated Residential Mortgage Loans, HFS, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Long Lived Assets Held-for-sale [Line Items]
Gain (loss) on residential mortgage loans originated and sold, net	$ (117,026)	$ (34,314)
Gain (loss) on settlement of residential mortgage loan origination derivative instruments	(15,524)	9,904
MSRs retained on transfer of residential mortgage loans	215,939	140,513
Other	6,493	(5,443)
Realized gain on sale of originated residential mortgage loans, net	89,882	110,660
Gain on originated residential mortgage loans, HFS, net	149,545	109,268
Loan origination fees and direct loan origination costs	177,700	68,900
Change in fair value of interest rate lock commitments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	7,485	26,240
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	37,910	(59,230)
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ 14,268	$ 31,598