RESIDENTIAL MORTGAGE LOANS - Gain On Sale of Originated Mortgage Loans, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Long Lived Assets Held-for-sale [Line Items]
Gain (loss) on residential mortgage loans originated and sold, net	$ (34,314)	$ (370,421)
Gain (loss) on settlement of residential mortgage loan origination derivative instruments	9,904	524,823
MSRs retained on transfer of residential mortgage loans	140,513	461,452
Other	(5,443)	27,701
Realized gain on sale of originated residential mortgage loans, net	110,660	643,555
Change in fair value of derivative instruments	(32,990)	118,438
Gain on originated residential mortgage loans, held-for-sale, net	109,268	471,996
Loan origination fees and direct loan origination costs	68,900	252,500
Change in fair value of interest rate lock commitments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	26,240	(127,685)
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	(59,230)	246,123
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ 31,598	$ (289,997)