RESIDENTIAL MORTGAGE LOANS - Gain On Sale of Originated Mortgage Loans, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Long Lived Assets Held-for-sale [Line Items]
Gain on loans originated and sold, net	$ (421,834)	$ 96,639	$ (792,255)	$ 97,726
Gain (loss) on settlement of mortgage loan origination derivative instruments	526,933	113,995	1,051,756	154,116
MSRs retained on transfer of loans	329,470	207,663	790,922	463,136
Other	1,838	28,405	29,539	52,102
Realized gain on sale of originated residential mortgage loans, net	436,407	446,702	1,079,962	767,080
Change in fair value of derivative instruments	(151,654)	(253,167)	(33,216)	(80,134)
Gain on originated residential mortgage loans, held-for-sale, net	304,791	286,885	776,787	690,333
Loan origination fees and direct loan origination costs	116,800	438,900	369,300	1,097,300
Change in fair value of interest rate lock commitments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	77,481	55,299	(50,204)	(179,683)
Change in fair value of derivative instruments
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of derivative instruments	(229,135)	(308,466)	16,988	99,549
Change in fair value of residential mortgage loans
Long Lived Assets Held-for-sale [Line Items]
Change in fair value of residential mortgage loans	$ 20,038	$ 93,350	$ (269,959)	$ 3,387