FAIR VALUE MEASUREMENTS - Financial Assets Measured at Fair Value on a Recurring Basis using Level 3 Inputs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Non-Agency RMBS
Gain (loss) included in net income
Gain (loss) on settlement of investments, net	$ (100)	$ (7,700)	$ (1,600)	$ (28,200)
Excess MSRs in Equity Method Investees
Purchases, sales and repayments
Rithm Capital’s percentage ownership	50.00%		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
Transfers
Transfers from Level 3			(1,431,712)
Transfers to Level 3			306,222
Gain (loss) included in net income
Reversal for credit losses on securities			(920)
Change in fair value of excess MSRs			(5,422)
Change in fair value of excess MSRs, equity method investees			(1,964)
Included in servicing revenue			985,135
Servicer advance investments			(2,828)
Residential mortgage loans			(174,196)
Consumer loans			(26,774)
Gain (loss) on settlement of investments, net			(45,324)
Other income (loss), net			(251,908)
Gains (losses) included in other comprehensive income			(34,929)
Interest income			66,839
Purchases, sales and repayments
Purchases, net			2,783,483
Proceeds from sales			(1,914,322)
Proceeds from repayments			(2,438,018)
Originations and other			2,578,695
Balance, ending	$ 13,817,904		13,817,904
Recurring Basis | Level 3 | Servicer Advance Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning			421,807
Transfers
Transfers from Level 3			0
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for 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			(2,828)
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			7,371
Purchases, sales and repayments
Purchases, net			744,671
Proceeds from sales
Proceeds from repayments			(799,603)
Originations and other			0
Balance, ending	371,418		371,418
Recurring Basis | Level 3 | Excess MSRs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning			344,947
Transfers
Transfers from Level 3			0
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for credit losses on securities			0
Change in fair value of excess MSRs			(5,422)
Change in fair value of excess MSRs, equity method investees			(1,964)
Included in servicing revenue			0
Servicer advance investments			0
Residential mortgage loans			0
Consumer loans			0
Gain (loss) on settlement of investments, net			104
Other income (loss), net			(66)
Gains (losses) included in other comprehensive income			0
Interest income			28,017
Purchases, sales and repayments
Purchases, net			0
Proceeds from sales			(997)
Proceeds from repayments			(42,451)
Originations and other			0
Balance, ending	322,168		322,168
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
Transfers
Transfers from Level 3			0
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for 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			985,135
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			(250)
Proceeds from sales			(8,149)
Proceeds from repayments			0
Originations and other			1,059,535
Balance, ending	8,895,074		8,895,074
Recurring Basis | Level 3 | Non-Agency RMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning			951,942
Transfers
Transfers from Level 3			0
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for credit losses on securities			(920)
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			(1,560)
Other income (loss), net			(30,254)
Gains (losses) included in other comprehensive income			(34,929)
Interest income			10,010
Purchases, sales and repayments
Purchases, net			217,660
Proceeds from sales			(11,960)
Proceeds from repayments			(160,941)
Originations and other			0
Balance, ending	939,048		939,048
Recurring Basis | Level 3 | Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning			111,778
Transfers
Transfers from Level 3			0
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for 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			(154,644)
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	(42,866)		(42,866)
Recurring Basis | Level 3 | Properties and Residential Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning			2,423,337
Transfers
Transfers from Level 3			(1,004,907)
Transfers to Level 3			306,222
Gain (loss) included in net income
Reversal for 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			(174,196)
Consumer loans			0
Gain (loss) on settlement of investments, net			0
Other income (loss), net			(35,041)
Gains (losses) included in other comprehensive income			0
Interest income			0
Purchases, sales and repayments
Purchases, net			1,790,332
Proceeds from sales			(1,893,216)
Proceeds from repayments			(238,676)
Originations and other			(3,897)
Balance, ending	1,169,958		1,169,958
Recurring Basis | Level 3 | Consumer Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning			507,291
Transfers
Transfers from Level 3			0
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for 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
Consumer loans			(26,774)
Gain (loss) on settlement of investments, net			0
Other income (loss), net			0
Gains (losses) included in other comprehensive income			0
Interest income			10,960
Purchases, sales and repayments
Purchases, net			22,070
Proceeds from sales			0
Proceeds from repayments			(119,948)
Originations and other			0
Balance, ending	393,599		393,599
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
Transfers
Transfers from Level 3			(1,000)
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for 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			(31,903)
Gains (losses) included in other comprehensive income			0
Interest income			10,481
Purchases, sales and repayments
Purchases, net			9,000
Proceeds from sales			0
Proceeds from repayments			(77,255)
Originations and other			0
Balance, ending	199,503		199,503
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
Transfers
Transfers from Level 3			(425,805)
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for 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			(43,868)
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			(999,144)
Originations and other			1,523,057
Balance, ending	$ 1,570,002		$ 1,570,002