DEBT OBLIGATIONS - Schedule of Carrying Value of Debt Obligations (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Debt Instrument [Roll Forward]
Beginning balance	$ 26,076,708
Ending balance	28,696,965
Servicer Advances and Excess MSRs
Debt Instrument [Roll Forward]
Beginning balance	2,713,933
Ending balance	2,704,127
MSRs
Debt Instrument [Roll Forward]
Beginning balance	4,800,728
Ending balance	5,389,633
Real Estate and Other Securities
Debt Instrument [Roll Forward]
Beginning balance	8,762,658
Ending balance	9,744,181
Residential Mortgage Loans and REO
Debt Instrument [Roll Forward]
Beginning balance	5,208,120
Ending balance	6,687,188
Consumer Loans
Debt Instrument [Roll Forward]
Beginning balance	1,106,974
Ending balance	786,425
SFR Properties and Commercial
Debt Instrument [Roll Forward]
Beginning balance	1,126,804
Ending balance	826,956
Mortgage Loans Receivable
Debt Instrument [Roll Forward]
Beginning balance	1,856,008
Ending balance	2,062,736
Asset Management
Debt Instrument [Roll Forward]
Beginning balance	501,483
Ending balance	495,719
Secured Financing Agreements
Debt Instrument [Roll Forward]
Beginning balance	12,561,283
Borrowings	68,563,872
Repayments	(65,946,782)
FX remeasurement	(4,987)
Capitalized deferred financing costs, net of amortization	6,513
Ending balance	15,179,899
Secured Financing Agreements | Servicer Advances and Excess MSRs
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	0
Secured Financing Agreements | MSRs
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	0
Secured Financing Agreements | Real Estate and Other Securities
Debt Instrument [Roll Forward]
Borrowings	40,053,308
Repayments	(39,071,785)
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	0
Secured Financing Agreements | Residential Mortgage Loans and REO
Debt Instrument [Roll Forward]
Borrowings	26,670,929
Repayments	(24,811,728)
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	257
Secured Financing Agreements | Consumer Loans
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	0
Secured Financing Agreements | SFR Properties and Commercial
Debt Instrument [Roll Forward]
Beginning balance	337,630
Borrowings	15,183
Repayments	(324,197)
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	6,356
Ending balance	34,972
Secured Financing Agreements | Mortgage Loans Receivable
Debt Instrument [Roll Forward]
Borrowings	1,807,048
Repayments	(1,733,004)
FX remeasurement	0
Capitalized deferred financing costs, net of amortization	0
Secured Financing Agreements | Asset Management
Debt Instrument [Roll Forward]
Borrowings	17,404
Repayments	(6,068)
FX remeasurement	(4,987)
Capitalized deferred financing costs, net of amortization	(100)
Secured Notes and Bonds Payable
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	190,596
Borrowings	2,353,384
Repayments	(2,959,966)
FX remeasurement	(99)
Unrealized (gain) loss on notes, fair value	2,451
Capitalized deferred financing costs, net of amortization	9,337
Secured Notes and Bonds Payable | Servicer Advances and Excess MSRs
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	190,596
Borrowings	1,157,000
Repayments	(1,357,552)
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	150
Secured Notes and Bonds Payable | MSRs
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	1,191,159
Repayments	(603,815)
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	1,561
Secured Notes and Bonds Payable | Real Estate and Other Securities
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	0
Repayments	0
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Secured Notes and Bonds Payable | Residential Mortgage Loans and REO
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	0
Repayments	(650,000)
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Secured Notes and Bonds Payable | Consumer Loans
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	0
Repayments	(323,594)
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	2,451
Capitalized deferred financing costs, net of amortization	594
Secured Notes and Bonds Payable | SFR Properties and Commercial
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	0
Repayments	(2,811)
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	5,621
Secured Notes and Bonds Payable | Mortgage Loans Receivable
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	0
Repayments	0
FX remeasurement	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Secured Notes and Bonds Payable | Asset Management
Debt Instrument [Roll Forward]
Acquired borrowings, net of discount	0
Borrowings	5,225
Repayments	(22,194)
FX remeasurement	(99)
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	1,411
Notes Payable of Consolidated CFEs
Debt Instrument [Roll Forward]
Beginning balance	3,155,237
Borrowings	899,499
Repayments	(493,425)
Discount on borrowings, net of amortization	(24,260)
Unrealized (gain) loss on notes, fair value	26,855
Capitalized deferred financing costs, net of amortization	(2,731)
Ending balance	3,561,175
Notes Payable of Consolidated CFEs | Servicer Advances and Excess MSRs
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Notes Payable of Consolidated CFEs | MSRs
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Notes Payable of Consolidated CFEs | Real Estate and Other Securities
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Notes Payable of Consolidated CFEs | Residential Mortgage Loans and REO
Debt Instrument [Roll Forward]
Borrowings	445,250
Repayments	(169,363)
Discount on borrowings, net of amortization	(24,260)
Unrealized (gain) loss on notes, fair value	17,983
Capitalized deferred financing costs, net of amortization	0
Notes Payable of Consolidated CFEs | Consumer Loans
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Notes Payable of Consolidated CFEs | SFR Properties and Commercial
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	0
Capitalized deferred financing costs, net of amortization	0
Notes Payable of Consolidated CFEs | Mortgage Loans Receivable
Debt Instrument [Roll Forward]
Beginning balance	318,998
Borrowings	454,249
Repayments	(324,062)
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	5,228
Capitalized deferred financing costs, net of amortization	(2,731)
Ending balance	451,682
Notes Payable of Consolidated CFEs | Asset Management
Debt Instrument [Roll Forward]
Borrowings	0
Repayments	0
Discount on borrowings, net of amortization	0
Unrealized (gain) loss on notes, fair value	3,644
Capitalized deferred financing costs, net of amortization	$ 0