RESIDENTIAL MORTGAGE LOANS - Schedule of Gain on Sale of Originated Mortgage Loans, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Long Lived Assets Held-for-sale [Line Items]
Gain (loss) on residential mortgage loans originated and sold, net	$ (822,641)	$ (392,137)	$ (1,099,941)
Gain (loss) on settlement of residential mortgage loan origination derivative instruments	28,157	73,476	1,285,219
MSRs retained on transfer of residential mortgage loans	1,341,728	786,655	1,222,742
Other	54,969	14,622	33,551
Realized gain on sale of originated residential mortgage loans, net	602,213	482,616	1,441,571
Gain on Originated Residential Mortgage Loans, HFS, Net	682,535	533,477	1,092,749
Loan origination fees and direct loan origination costs	900,000	400,000	600,000
Gain on residential mortgage loan securitizations	24,200	0	0
Change in fair value of interest rate lock commitments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	(12,449)	15,018	(102,992)
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	90,675	(64,034)	25,700
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ 2,096	$ 99,877	$ (271,530)