CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023		Sep. 30, 2022
Cash Flows From Operating Activities
Net income	$ 697,825		$ 877,452
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Change in fair value of investments, net	516,114		(587,181)
Change in fair value of equity investments	27,509		8,535
Change in fair value of secured notes and bonds payable	(5,890)		(50,279)
(Gain) loss on settlement of investments, net	(402,449)		843,837
(Gain) loss on sale of originated residential mortgage loans, held-for-sale, net	(410,320)		(980,266)
(Gain) loss on transfer of loans to REO	(10,120)		(6,263)
Accretion and other amortization	(85,063)		(45,230)
Provision (reversal) for credit losses on securities, loans and real estate owned	6,455		14,272
Non-cash portions of servicing revenue, net	158,344		(890,281)
Deferred tax provision	86,324		297,517
Mortgage loans originated and purchased for sale, net of fees	(30,003,362)		(65,446,856)
Sales proceeds and loan repayment proceeds for residential mortgage loans, held-for-sale	30,494,925		72,072,003
Interest received from servicer advance investments, RMBS, loans and other	42,932		46,797
Changes in:
Servicer advances receivable, net	339,610		332,902
Other assets	15,312		(54,235)
Due to affiliate	0		(17,819)
Accrued expenses and other liabilities	199,341		317,256
Net cash provided by (used in) operating activities	1,667,487		6,732,161
Cash Flows From Investing Activities
Purchase of servicer advance investments	(644,594)		(744,671)
Purchase of RMBS	(4,094,458)		(9,597,580)
Purchase of U.S. Treasury Bills	(973,795)		0
Purchase of residential mortgage loans	(1,269)		(7,182)
Purchase of SFR properties, real estate owned and other assets	(72,503)		(396,981)
Purchase of mortgage loans receivable	(146,631)		0
Draws on revolving consumer loans	(20,675)		(22,070)
Net settlement of derivatives	390,415		282,827
Return of investments in Excess MSRs	23,066		12,264
Principal repayments from servicer advance investments	675,261		791,653
Principal repayments from RMBS	514,553		915,913
Principal repayments from residential mortgage loans	35,064		69,020
Principal repayments from consumer loans	267,820		112,228
Proceeds from sale of MSRs and MSR financing receivables	705,300		3,975
Proceeds from sale of RMBS	1,868,702		7,716,127
Proceeds from sale of real estate owned	19,806		9,652
Net cash provided by (used in) investing activities	(1,453,938)		(854,825)
Cash Flows From Financing Activities
Repayments of secured financing agreements	(31,733,802)		(39,920,856)
Repayments of warehouse credit facilities	(31,076,021)		(73,028,747)
Net settlement of margin deposits under repurchase agreements and derivatives	(676,511)		1,007,970
Repayments of secured notes and bonds payable	(5,024,509)		(3,174,439)
Deferred financing fees	(7,084)		(8,992)
Dividends paid on common and preferred stock	(427,583)		(417,445)
Borrowings under secured financing agreements	34,530,433		39,713,905
Borrowings under warehouse credit facilities	30,625,465		66,296,292
Borrowings under secured notes and bonds payable	3,561,756		4,101,314
Repurchase of preferred stock	0		(3,814)
Noncontrolling interest in equity of consolidated subsidiaries - distributions	(17,597)		(21,391)
Net cash provided by (used in) financing activities	(245,453)		(5,456,203)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(31,904)		421,133
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	1,617,634		1,528,442
Cash, Cash Equivalents and Restricted Cash, End of Period	1,585,730		1,949,575
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	893,204		468,991
Cash paid during the period for income taxes	1,798		1,757
Supplemental Schedule of Non-Cash Investing and Financing Activities
Dividends declared but not paid on common and preferred stock	143,199		140,856
Transfer from residential mortgage loans to real estate owned and other assets	21,135		10,762
Real estate securities retained from loan securitizations	15,241		167,246
Residential mortgage loans subject to repurchase	1,443,546	[1]	1,897,142
Purchase of Agency RMBS, settled after quarter-end	0		498,933
Cashless exercise of 2020 warrants (par)	93		0
Seller financing in Marcus acquisition	$ 1,317,347		$ 0

[1] See Note 5 for details.