FAIR VALUE MEASUREMENTS - Financial Assets Measured at Fair Value on a Recurring Basis using Level 3 Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Purchases, sales and repayments
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Change in fair value of investments
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other income (loss), net
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	Net unrealized gain (loss) on available-for-sale securities, net
Non-Agency
Gains (losses) included in net income
Gain (loss) on settlement of investments, net	$ (1,600)	$ (28,500)
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	$ 13,425,847	$ 10,063,098
Transfers
Transfers from Level 3	(1,726,112)
Transfers to Level 3	313,559	2,386
Acquisitions (Note 3)		3,129,562
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	(710)	5,201
Change in fair value of Excess MSRs	(2,962)	(15,078)
Change in fair value of Excess MSRs, equity method investees	1,526	1,818
Servicing revenue, net	823,107	(513,686)
Change in fair value of servicer advance investments	(9,950)	(9,076)
Change in fair value of real estate securities	(16,076)
Change in fair value of consumer loans	(36,740)	(20,133)
Change in fair value of residential mortgage loans	(124,359)	155,758
Gain (loss) on settlement of investments, net	(45,321)	(28,146)
Other income (loss), net	(202,536)	(285,945)
Gains (losses) included in other comprehensive income	(45,709)	28,882
Interest income	121,981	64,072
Purchases, sales and repayments
Purchases, net	3,382,544	5,635,602
Proceeds from sales	(2,432,770)	(3,904,136)
Proceeds from repayments	(3,108,583)	(2,517,922)
Originations and other	3,139,042	1,633,590
Balance, ending	13,455,778	13,425,847
Recurring Basis | Level 3 | Servicer Advance Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	421,807	538,056
Transfers
Transfers from Level 3	0
Transfers to Level 3	0	0
Acquisitions (Note 3)		0
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	(9,950)	(9,076)
Change in fair value of real estate securities	0
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	0	0
Other income (loss), net	0	0
Gains (losses) included in other comprehensive income	0	0
Interest income	42,005	1,678
Purchases, sales and repayments
Purchases, net	988,847	1,286,526
Proceeds from sales	0	0
Proceeds from repayments	(1,043,889)	(1,395,377)
Originations and other	0	0
Balance, ending	398,820	421,807
Recurring Basis | Level 3 | Excess MSRs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	344,947	410,855
Transfers
Transfers from Level 3	0
Transfers to Level 3	0	0
Acquisitions (Note 3)		0
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	(2,962)	(15,078)
Change in fair value of Excess MSRs, equity method investees	1,526	1,818
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	107	404
Other income (loss), net	(65)	(326)
Gains (losses) included in other comprehensive income	0	0
Interest income	38,035	20,296
Purchases, sales and repayments
Purchases, net	0	0
Proceeds from sales	(997)	(984)
Proceeds from repayments	(58,788)	(72,038)
Originations and other	0	0
Balance, ending	321,803	344,947
Recurring Basis | Level 3 | MSRs And MSR Financing Receivables
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	6,858,803	4,585,841
Transfers
Transfers from Level 3	0
Transfers to Level 3	0	0
Acquisitions (Note 3)		1,507,524
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	823,107	(513,686)
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	0
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	0	0
Other income (loss), net	0	0
Gains (losses) included in other comprehensive income	0	0
Interest income	0	0
Purchases, sales and repayments
Purchases, net	(967)	10,949
Proceeds from sales	(14,282)	(63,451)
Proceeds from repayments	0	0
Originations and other	1,222,742	1,331,626
Balance, ending	8,889,403	6,858,803
Recurring Basis | Level 3 | Non-Agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	951,942	1,180,924
Transfers
Transfers from Level 3	0
Transfers to Level 3	0	0
Acquisitions (Note 3)		0
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	(710)	5,201
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	(16,076)
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	(1,560)	(28,550)
Other income (loss), net	0	9,136
Gains (losses) included in other comprehensive income	(45,709)	28,882
Interest income	15,114	13,740
Purchases, sales and repayments
Purchases, net	256,500	174,340
Proceeds from sales	(11,960)	(164,630)
Proceeds from repayments	(196,681)	(267,101)
Originations and other	0	0
Balance, ending	950,860	951,942
Recurring Basis | Level 3 | Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	111,778	289,074
Transfers
Transfers from Level 3	0
Transfers to Level 3	0	0
Acquisitions (Note 3)		116,403
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	0
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	0	0
Other income (loss), net	(102,992)	(293,699)
Gains (losses) included in other comprehensive income	0	0
Interest income	0	0
Purchases, sales and repayments
Purchases, net	0	0
Proceeds from sales	0	0
Proceeds from repayments	0	0
Originations and other	0	0
Balance, ending	8,786	111,778
Recurring Basis | Level 3 | Residential Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	2,423,337	2,320,384
Transfers
Transfers from Level 3	(1,279,709)
Transfers to Level 3	313,559	2,386
Acquisitions (Note 3)		0
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	0
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	(124,359)	155,758
Gain (loss) on settlement of investments, net	0	0
Other income (loss), net	(35,020)	(1,357)
Gains (losses) included in other comprehensive income	0	0
Interest income	0	0
Purchases, sales and repayments
Purchases, net	2,099,549	4,128,097
Proceeds from sales	(2,405,531)	(3,675,071)
Proceeds from repayments	(272,224)	(487,830)
Originations and other	(5,706)	(19,030)
Balance, ending	713,896	2,423,337
Recurring Basis | Level 3 | Consumer Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	507,291	685,575
Transfers
Transfers from Level 3	0
Transfers to Level 3	0	0
Acquisitions (Note 3)		0
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	0
Change in fair value of consumer loans	(36,740)	(20,133)
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	0	0
Other income (loss), net	0	0
Gains (losses) included in other comprehensive income	0	0
Interest income	13,891	18,925
Purchases, sales and repayments
Purchases, net	29,615	29,002
Proceeds from sales	0	0
Proceeds from repayments	(150,301)	(206,078)
Originations and other	0	0
Balance, ending	363,756	507,291
Recurring Basis | Level 3 | Notes and Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	290,180	52,389
Transfers
Transfers from Level 3	(1,000)
Transfers to Level 3	0	0
Acquisitions (Note 3)		0
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	0
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	0	0
Other income (loss), net	(64,459)	301
Gains (losses) included in other comprehensive income	0	0
Interest income	12,936	9,433
Purchases, sales and repayments
Purchases, net	9,000	6,688
Proceeds from sales	0	0
Proceeds from repayments	(152,256)	(28,631)
Originations and other	0	250,000
Balance, ending	94,401	290,180
Recurring Basis | Level 3 | Mortgage Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	1,515,762	0
Transfers
Transfers from Level 3	(445,403)
Transfers to Level 3	0	0
Acquisitions (Note 3)		1,505,635
Gains (losses) included in net income
Reversal (provision) for credit losses on securities	0	0
Change in fair value of Excess MSRs	0	0
Change in fair value of Excess MSRs, equity method investees	0	0
Servicing revenue, net	0	0
Change in fair value of servicer advance investments	0	0
Change in fair value of real estate securities	0
Change in fair value of consumer loans	0	0
Change in fair value of residential mortgage loans	0	0
Gain (loss) on settlement of investments, net	(43,868)	0
Other income (loss), net	0	0
Gains (losses) included in other comprehensive income	0	0
Interest income	0	0
Purchases, sales and repayments
Purchases, net	0	0
Proceeds from sales	0	0
Proceeds from repayments	(1,234,444)	(60,867)
Originations and other	1,922,006	70,994
Balance, ending	$ 1,714,053	$ 1,515,762