CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022		Sep. 30, 2021
Cash flows from operating activities
Net income (loss)	$ 2,613,234		$ 1,977,820
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Amortization of premiums and discounts of investments, net	43,676		555,659
Amortization of securitized debt premiums and discounts and deferred financing costs	(3,829)		(4,129)
Depreciation, amortization and other noncash expenses	15,879		21,084
Net (gains) losses on investments and derivatives	(1,217,818)		(1,051,047)
Business divestiture-related (gains) losses	27,245		262,045
Income (loss) from unconsolidated joint ventures	(11,985)		5,889
Loan loss (provision) reversal	(27,918)		(145,260)
Payments on purchases of loans held for sale	0		(51,403)
Proceeds from sales and repayments of loans held for sale	3,946		88,050
Net receipts (payments) on derivatives	2,799,188		608,184
Net change in
Other assets	(6,511)		22,441
Interest receivable	(28,718)		34,881
Interest payable	(61,285)		(81,183)
Other liabilities	1,025,727		(27,750)
Net cash provided by (used in) operating activities	5,170,831		2,215,281
Cash flows from investing activities
Payments on purchases of securities	(30,851,614)		(18,334,872)
Proceeds from sales of securities	16,744,864		11,146,996
Principal payments on securities	7,864,869		14,638,456
Payments on purchases and origination of loans	(5,165,059)		(4,710,425)
Proceeds from sales of loans	1,918,996		879,147
Principal payments on loans	1,357,018		2,016,373
Payments on purchases of MSR	(866,767)		(416,149)
Proceeds from sales of MSR	9,076		376
Payments on purchases of interests in MSR	(4,913)		(53,034)
Investments in real estate	0		(1,815)
Proceeds from sales of real estate	0		53,910
Proceeds from reverse repurchase agreements	18,450,024		15,184,313
Payments on reverse repurchase agreements	(18,450,024)		(15,184,313)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	0		290
Proceeds from sale of equity securities	0		6,957
Net proceeds from business divestiture	0		1,118,100
Net cash provided by (used in) investing activities	(8,993,530)		6,344,310
Cash flows from financing activities
Proceeds from repurchase agreements and other secured financing	2,581,103,609		1,702,497,310
Payments on repurchase agreements and other secured financing	(2,582,371,537)		(1,712,035,449)
Proceeds from issuances of securitized debt	4,876,814		2,005,080
Principal payments on securitized debt	(1,059,955)		(1,270,367)
Payments on purchases of securitized debt	(8,495)		0
Net proceeds from stock offerings, direct purchases and dividend reinvestments	2,627,079		469,334
Proceeds from participations issued	1,637,231		1,036,800
Payments on repurchases of participations issued	(1,796,643)		(434,873)
Principal payments on participations issued	(40,241)		(10,420)
Net principal receipts (payments) on mortgages payable	0		(1,019)
Net contributions (distributions) from (to) noncontrolling interests	60,390		3,180
Settlement of stock-based awards in satisfaction of withholding tax requirements	(4,039)		(2,773)
Dividends paid	(1,077,433)		(1,013,797)
Net cash provided by (used in) financing activities	3,946,780		(8,756,994)
Net (decrease) increase in cash and cash equivalents	124,081		(197,403)
Cash and cash equivalents including cash pledged as collateral, beginning of period	1,342,090		1,243,703
Cash and cash equivalents including cash pledged as collateral, end of period	1,466,171	[1]	1,046,300
Supplemental disclosure of cash flow information
Interest received	1,751,099		2,107,854
Dividends received	0		51
Interest paid (excluding interest paid on interest rate swaps)	457,122		228,875
Net interest received (paid) on interest rate swaps	(57,302)		(258,061)
Taxes received (paid)	(2,170)		(780)
Noncash investing and financing activities
Receivable for unsettled trades	2,153,895		42,482
Payable for unsettled trades	9,333,646		571,540
Net change in unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment	(6,389,846)		(1,735,697)
Dividends declared, not yet paid	411,762		318,986
Derecognition of assets of consolidated VIEs	0		3,052,280
Derecognition of securitized debt of consolidated VIEs	0		2,496,118
Derecognition of mortgages payable	$ 0		$ 314,485

[1] (2)Includes cash of consolidated Variable Interest Entities (“VIEs”) of $3.5 million and $16.2 million at September 30, 2022 and December 31, 2021, respectively.