FAIR VALUE MEASUREMENTS - Financial Assets Measured at Fair Value on a Recurring Basis using Level 3 Inputs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Non-Agency RMBS
Gain (loss) included in net income
Gain (loss) on settlement of investments, net	$ 0	$ (10,700)	$ (1,600)	$ (20,500)
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			(1,183,060)
Transfers to Level 3			0
Gain (loss) included in net income
Reversal for credit losses on securities			(776)
Change in fair value of excess MSRs			(1,564)
Change in fair value of excess MSRs, equity method investees			1,859
Included in servicing revenue			981,581
Servicer advance investments			(1,797)
Residential mortgage loans			(132,397)
Consumer loans			(20,964)
Gain (loss) on settlement of investments, net			(45,391)
Other income (loss), net			(99,369)
Gains (losses) included in other comprehensive income			(25,620)
Interest income			47,764
Purchases, sales and repayments
Purchases, net			2,248,701
Proceeds from sales			(1,870,682)
Proceeds from repayments			(1,627,539)
Originations and other			1,746,125
Balance, ending	$ 13,442,718		13,442,718
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			(1,797)
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			6,854
Purchases, sales and repayments
Purchases, net			500,000
Proceeds from sales
Proceeds from repayments			(546,963)
Originations and other			0
Balance, ending	379,901		379,901
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			(1,564)
Change in fair value of excess MSRs, equity method investees			1,859
Included in servicing revenue			0
Servicer advance investments			0
Residential mortgage loans			0
Consumer loans			0
Gain (loss) on settlement of investments, net			37
Other income (loss), net			0
Gains (losses) included in other comprehensive income			0
Interest income			20,605
Purchases, sales and repayments
Purchases, net			0
Proceeds from sales			(997)
Proceeds from repayments			(27,837)
Originations and other			0
Balance, ending	337,050		337,050
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			981,581
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			(613)
Proceeds from sales			(4,284)
Proceeds from repayments			0
Originations and other			790,922
Balance, ending	8,626,409		8,626,409
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			(776)
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			(36,803)
Gains (losses) included in other comprehensive income			(25,620)
Interest income			5,818
Purchases, sales and repayments
Purchases, net			148,590
Proceeds from sales			0
Proceeds from repayments			(116,857)
Originations and other			0
Balance, ending	924,734		924,734
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			(50,204)
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	61,574		61,574
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			(776,774)
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			(132,397)
Consumer loans			0
Gain (loss) on settlement of investments, net			0
Other income (loss), net			(2,734)
Gains (losses) included in other comprehensive income			0
Interest income			0
Purchases, sales and repayments
Purchases, net			1,586,374
Proceeds from sales			(1,865,401)
Proceeds from repayments			(162,733)
Originations and other			(1,162)
Balance, ending	1,068,510		1,068,510
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			(20,964)
Gain (loss) on settlement of investments, net			0
Other income (loss), net			0
Gains (losses) included in other comprehensive income
Interest income			7,695
Purchases, sales and repayments
Purchases, net			14,350
Proceeds from sales			0
Proceeds from repayments			0
Originations and other			(84,637)
Balance, ending	423,735		423,735
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			(9,628)
Gains (losses) included in other comprehensive income			0
Interest income			6,792
Purchases, sales and repayments
Purchases, net			0
Proceeds from sales			0
Proceeds from repayments			(68,751)
Originations and other			0
Balance, ending	217,593		217,593
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			(405,286)
Transfers to Level 3
Gain (loss) included in net income
Reversal for credit losses on securities
Change in fair value of excess MSRs
Change in fair value of excess MSRs, equity method investees
Included in servicing revenue
Servicer advance investments
Residential mortgage loans
Consumer loans
Gain (loss) on settlement of investments, net			(43,868)
Other income (loss), net
Gains (losses) included in other comprehensive income
Interest income
Purchases, sales and repayments
Purchases, net
Proceeds from sales
Proceeds from repayments			(704,398)
Originations and other			1,041,002
Balance, ending	$ 1,403,212		$ 1,403,212