FAIR VALUE MEASUREMENTS - Financial Assets Measured at Fair Value on a Recurring Basis using Level 3 Inputs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Non-Agency
Gain (loss) included in net income
Gain (loss) on settlement of investments, net	$ 0	$ (1,600)
Excess MSRs in Equity Method Investees
Purchases, sales and repayments
Rithm Capital’s percentage ownership	50.00%		50.00%
Recurring Basis | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	$ 13,455,778
Transfers
Transfers from Level 3	(170,916)
Transfers to Level 3	19,404
Gain (loss) included in net income
Credit losses on securities	146
Change in fair value of excess MSRs	(9,818)
Change in fair value of excess MSRs, equity method investees	(1,414)
Included in servicing revenue	(142,304)
Servicer advance investments	(735)
Residential mortgage loans	12,534
Consumer loans	(5,991)
Gain (loss) on settlement of investments, net	172
Other income (loss), net	79,323
Gains (losses) included in other comprehensive income	2,988
Interest income	21,879
Purchases, sales and repayments
Purchases, net	251,372
Proceeds from sales	(37,101)
Proceeds from repayments	(866,025)
Originations and other	598,437
Balance, ending	13,207,729
Recurring Basis | Level 3 | Servicer Advance Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	398,820
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	(735)
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in other comprehensive income	0
Interest income	4,630
Purchases, sales and repayments
Purchases, net	232,446
Proceeds from sales
Proceeds from repayments	(245,256)
Originations and other	0
Balance, ending	389,905
Recurring Basis | Level 3 | Excess MSRs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	321,803
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	(9,818)
Change in fair value of excess MSRs, equity method investees	(1,414)
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	172
Other income (loss), net	(104)
Gains (losses) included in other comprehensive income	0
Interest income	3,431
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	(703)
Proceeds from repayments	(14,064)
Originations and other	0
Balance, ending	299,303
Recurring Basis | Level 3 | MSRs and MSR Financing Receivables
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	8,889,403
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	(142,304)
Servicer advance investments	0
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in other comprehensive income	0
Interest income	0
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	(1,403)
Proceeds from repayments	0
Originations and other	140,513
Balance, ending	8,886,209
Recurring Basis | Level 3 | Non-Agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	950,860
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	146
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	13,218
Gains (losses) included in other comprehensive income	2,988
Interest income	9,138
Purchases, sales and repayments
Purchases, net	2,400
Proceeds from sales	0
Proceeds from repayments	(32,696)
Originations and other	0
Balance, ending	946,054
Recurring Basis | Level 3 | Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	8,786
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	26,240
Gains (losses) included in other comprehensive income	0
Interest income	0
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	0
Proceeds from repayments	0
Originations and other	0
Balance, ending	35,026
Recurring Basis | Level 3 | Properties and Residential Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	713,896
Transfers
Transfers from Level 3	(80,896)
Transfers to Level 3	19,404
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans	12,534
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	39,738
Gains (losses) included in other comprehensive income	0
Interest income	0
Purchases, sales and repayments
Purchases, net	9,695
Proceeds from sales	(34,995)
Proceeds from repayments	(25,984)
Originations and other	28,287
Balance, ending	681,679
Recurring Basis | Level 3 | Consumer Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	363,756
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans
Consumer loans	(5,991)
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in other comprehensive income	0
Interest income	2,546
Purchases, sales and repayments
Purchases, net	6,831
Proceeds from sales	0
Proceeds from repayments	(26,617)
Originations and other	0
Balance, ending	340,525
Recurring Basis | Level 3 | Notes and Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	94,401
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	231
Gains (losses) included in other comprehensive income	0
Interest income	2,134
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	0
Proceeds from repayments	(64,661)
Originations and other	0
Balance, ending	32,105
Recurring Basis | Level 3 | Mortgage Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	1,714,053
Transfers
Transfers from Level 3	(90,020)
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Change in fair value of excess MSRs	0
Change in fair value of excess MSRs, equity method investees	0
Included in servicing revenue	0
Servicer advance investments	0
Residential mortgage loans	0
Consumer loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in other comprehensive income	0
Interest income	0
Purchases, sales and repayments
Proceeds from sales	0
Proceeds from repayments	(456,747)
Originations and other	429,637
Balance, ending	$ 1,596,923