RESIDENTIAL MORTGAGE LOANS - Gain On Sale of Originated Mortgage Loans, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Long Lived Assets Held-for-sale [Line Items]
Gain on loans originated and sold, net	$ (141,327)	$ 249,848	$ (933,582)	$ 347,574
Gain (loss) on settlement of mortgage loan origination derivative instruments	57,407	(105,594)	1,109,163	48,522
MSRs retained on transfer of loans	268,613	415,054	1,059,535	878,190
Other	2,763	27,614	32,302	79,716
Realized gain on sale of originated residential mortgage loans, net	187,456	586,922	1,267,418	1,354,002
Change in fair value of derivative instruments	129,233	50,771	96,017	(29,363)
Gain on originated residential mortgage loans, held-for-sale, net	203,479	566,761	980,266	1,257,094
Loan origination fees and direct loan origination costs	156,800	678,400	526,100	1,775,700
Change in fair value of interest rate lock commitments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	(104,440)	(101,411)	(154,644)	(281,094)
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	233,673	152,182	250,661	251,731
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ (113,210)	$ (70,932)	$ (383,169)	$ (67,545)