FAIR VALUE MEASUREMENTS - Schedule of Changes in the Company’s Level 3 Inputs Financial Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Non-Agency
Gain (loss) included in net income
Gain (loss) on settlement of investments, net	$ 0	$ 0
Excess MSRs in Equity Method Investees
Purchases, sales and repayments
Rithm Capital’s percentage ownership	50.00%		50.00%
Recurring Basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	$ 14,398,561
Transfers
Transfers from Level 3	(77,455)
Transfers to Level 3	106
Gain (loss) included in net income
Credit losses on securities	(662)
Included in servicing revenue	84,175
Excess MSRs	(1,867)
Excess MSRs, equity method investees	0
Servicer advance investments	8,115
Consumer loans	(30,117)
Residential mortgage loans	(1,491)
Gain (loss) on settlement of investments, net	36
Other income (loss), net	9,355
Gains (losses) included in OCI	737
Interest income	29,306
Purchases, sales and repayments
Purchases, net	499,952
Proceeds from sales	(17,095)
Proceeds from repayments	(929,953)
Originations and other	872,457
Balance, ending	14,844,160
Recurring Basis | Excess MSRs
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	271,150
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	(1,867)
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in OCI	0
Interest income	2,446
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	0
Proceeds from repayments	(16,618)
Originations and other	0
Balance, ending	255,111
Recurring Basis | MSRs and MSR Financing Receivables
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	8,405,938
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	84,175
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in OCI	0
Interest income	0
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	671
Proceeds from repayments	0
Originations and other	215,939
Balance, ending	8,706,723
Recurring Basis | Servicer Advances
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	376,881
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	8,115
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in OCI	0
Interest income	7,315
Purchases, sales and repayments
Purchases, net	212,656
Proceeds from sales
Proceeds from repayments	(230,456)
Originations and other	0
Balance, ending	374,511
Recurring Basis | Non-Agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	1,224,534
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	(662)
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	36
Other income (loss), net	2,270
Gains (losses) included in OCI	737
Interest income	8,299
Purchases, sales and repayments
Purchases, net	66,779
Proceeds from sales	0
Proceeds from repayments	(51,545)
Originations and other	0
Balance, ending	1,250,448
Recurring Basis | Derivatives
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	23,804
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	(9,612)
Gains (losses) included in OCI	0
Interest income	0
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	0
Proceeds from repayments	0
Originations and other	(61)
Balance, ending	14,131
Recurring Basis | Residential Mortgage Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	513,381
Transfers
Transfers from Level 3	0
Transfers to Level 3	106
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	(1,491)
Gain (loss) on settlement of investments, net	0
Other income (loss), net	1,824
Gains (losses) included in OCI	0
Interest income	0
Purchases, sales and repayments
Purchases, net	216,404
Proceeds from sales	(17,766)
Proceeds from repayments	(16,042)
Originations and other	7,133
Balance, ending	703,549
Recurring Basis | Consumer Loans
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	1,274,005
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	(30,117)
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in OCI	0
Interest income	10,152
Purchases, sales and repayments
Purchases, net	4,113
Proceeds from sales	0
Proceeds from repayments	(154,354)
Originations and other	0
Balance, ending	1,103,799
Recurring Basis | Notes and Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	429,550
Transfers
Transfers from Level 3	0
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	0
Gains (losses) included in OCI	0
Interest income	1,094
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	0
Proceeds from repayments	(37,670)
Originations and other	0
Balance, ending	392,974
Recurring Basis | Mortgage Loans Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	1,879,318
Transfers
Transfers from Level 3	(77,455)
Transfers to Level 3	0
Gain (loss) included in net income
Credit losses on securities	0
Included in servicing revenue	0
Excess MSRs	0
Excess MSRs, equity method investees	0
Servicer advance investments	0
Consumer loans	0
Residential mortgage loans	0
Gain (loss) on settlement of investments, net	0
Other income (loss), net	14,873
Gains (losses) included in OCI	0
Interest income	0
Purchases, sales and repayments
Purchases, net	0
Proceeds from sales	0
Proceeds from repayments	(423,268)
Originations and other	649,446
Balance, ending	$ 2,042,914