CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash Flows From Operating Activities
Net income (loss)	$ 287,487	$ 89,949
Change in fair value of investments, net
Change in fair value of investments, net	341,219	247,075
Change in fair value of equity investments	(6,012)	2,098
Change in fair value of secured notes and bonds payable	4,605	2,500
(Gain) loss on settlement of investments, net	(274,709)	(167,609)
(Gain) loss on sale of originated residential mortgage loans, held-for-sale, net	(142,457)	(109,268)
(Gain) loss on transfer of loans to real estate owned ("REO")	(2,166)	(3,276)
Accretion and other amortization	(21,224)	(12,766)
Provision (reversal) for credit losses on securities, loans and REO	462	(2,803)
Non-cash portions of servicing revenue, net	(76,376)	149,730
Deferred tax provision	90,628	(16,822)
Mortgage loans originated and purchased for sale, net of fees	(11,439,065)	(7,531,856)
Sales proceeds and loan repayment proceeds for residential mortgage loans, held-for-sale	9,856,746	8,137,021
Residential mortgage loan repayment proceeds of consolidated CFEs	80,822	57,854
Mortgage loans receivable repayment proceeds of consolidated CFEs	0	90,496
Interest received from servicer advance investments, loans and other	13,488	13,705
Purchase of investments of consolidated CFEs	(9,811)	0
Proceeds from sale and repayments of investments of consolidated CFEs	2,090	0
Changes in:
Servicer advances receivable, net	165,425	230,596
Other assets	37,637	50,472
Accrued expenses and other liabilities	(223,335)	21,346
Net cash provided by (used in) operating activities	(1,314,546)	1,248,442
Cash Flows From Investing Activities
Purchase of US Treasuries	(4,733,368)	0
Purchase of servicer advance investments	(212,656)	(232,446)
Purchase of RMBS	(1,891)	(2,883,278)
US Treasury short sales	1,425,370	0
Reverse repurchase agreements entered	(1,256,872)	0
Purchase of residential mortgage loans	0	(1,269)
Purchase of Single-family rental (“SFR”) properties, MSRs and other assets	(63,877)	(4,607)
Draws on revolving consumer loans	(4,113)	(6,831)
Origination of mortgage loans receivable	(649,698)	0
Net settlement of derivatives	371,827	225,560
Return of investments in Excess MSRs	10,423	7,821
Principal repayments from servicer advance investments	224,039	240,331
Principal repayments from RMBS	165,324	143,419
Principal repayments from residential mortgage loans	12,187	8,272
Principal repayments from consumer loans	153,479	24,784
Proceeds from sale of MSRs and MSR financing receivables	(671)	1,357
Proceeds from sale of RMBS	0	1,869,053
Proceeds from sale of REO	5,216	5,678
Net cash provided by (used in) investing activities	(4,050,190)	(602,156)
Cash Flows From Financing Activities
Repayments of secured financing agreements	(18,055,590)	(11,327,261)
Repayments of warehouse credit facilities	(10,778,294)	(8,473,149)
Repayment of unsecured senior notes	(275,000)	0
Net settlement of margin deposits under repurchase agreements and derivatives	(346,569)	(387,780)
Repayments of secured notes and bonds payable	(1,405,197)	(1,677,534)
Deferred financing fees	(8,298)	(2,103)
Dividends paid on common and preferred stock	(143,298)	(140,968)
Borrowings under secured financing agreements	22,495,882	12,240,027
Borrowings under warehouse credit facilities	12,047,306	8,062,420
Borrowings under secured notes and bonds payable	761,266	1,303,796
Proceeds from issuance of unsecured senior notes	767,103	0
Noncontrolling interest in equity of consolidated subsidiaries - distributions	(3,728)	(5,430)
Proceeds from issuance of debt obligations of consolidated CFEs	257,597	0
Repayments of debt obligations of consolidated CFEs	(87,545)	(51,983)
Net cash provided by (used in) financing activities	5,225,635	(459,965)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(139,101)	186,321
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	1,697,095	1,629,328
Cash, Cash Equivalents and Restricted Cash, End of Period	1,557,994	1,815,649
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	465,964	313,870
Cash paid during the period for income taxes	1,259	402
Supplemental Schedule of Non-Cash Investing and Financing Activities
Dividends declared but not paid on common and preferred stock	143,199	143,149
Transfer from residential mortgage loans to REO and other assets	5,917	6,025
Real estate securities retained from loan securitizations	0	0
Residential mortgage loans subject to repurchase	1,845,889	1,189,907
Purchase of Agency RMBS, settled after quarter-end	1,271,542	0
Cashless exercise of 2020 warrants (par)	0	93
Consolidated Entity, Excluding Consolidated VIE
Cash Flows From Investing Activities
Principal repayments from mortgage loans receivable	423,269	0
Variable Interest Entity, Primary Beneficiary
Cash Flows From Investing Activities
Principal repayments from mortgage loans receivable	$ 81,822	$ 0