RESIDENTIAL MORTGAGE LOANS - Schedule of Gain on Sale of Originated Mortgage Loans, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Long Lived Assets Held-for-sale [Line Items]
Loss on residential mortgage loans originated and sold, net	$ (257,202)	$ (217,515)	$ (416,852)	$ (341,629)
Gain (loss) on settlement of residential mortgage loan origination derivative instruments	24,980	10,077	37,769	(5,447)
MSRs retained on transfer of residential mortgage loans	377,074	364,305	696,222	580,244
Other	14,394	5,114	36,376	11,608
Realized gain on sale of originated residential mortgage loans, net	159,246	161,981	353,515	244,776
Gain on Originated Residential Mortgage Loans, HFS, Net	169,698	153,741	329,487	296,199
Loan origination fees and direct loan origination costs	248,300	233,800	445,900	411,500
Gain on residential mortgage loan securitizations	9,600	0	25,000	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	16,135	(14,817)	39,228	(7,332)
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	(30,755)	15,484	(100,927)	53,394
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ 25,072	$ (8,907)	$ 37,671	$ 5,361