RESIDENTIAL MORTGAGE LOANS - Schedule of Gain on Sale of Originated Mortgage Loans, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Long Lived Assets Held-for-sale [Line Items]
Gain (loss) on residential mortgage loans originated and sold, net	$ (1,106,458)	$ 460,062	$ 811,288
Gain (loss) on settlement of residential mortgage loan origination derivative instruments	1,285,219	240,610	(361,755)
MSRs retained on transfer of residential mortgage loans	1,222,742	1,331,626	666,414
Other	33,551	107,249	49,270
Realized gain on sale of originated residential mortgage loans, net	1,435,054	2,139,547	1,165,217
Gain on originated residential mortgage loans, held-for-sale, net	1,086,232	1,826,909	1,399,092
Loan origination fees and direct loan origination costs	600,000	2,300,000	1,700,000
Change in fair value of interest rate lock commitments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	(102,992)	(293,699)	249,183
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	25,700	118,564	(115,216)
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ (271,530)	$ (137,503)	$ 99,908