Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net income	$ 297,412	$ 55,991
Adjustments to reconcile net income to net cash provided by operating activities
Satisfaction of management and incentive fees in stock	0	19,277
Non-cash compensation expense	24,184	25,978
Amortization of deferred fees on loans and debt securities	(43,299)	(43,516)
Amortization of deferred financing costs and premiums/ discounts on debt obligations	29,698	28,122
(Decrease) increase in current expected credit loss reserve	(49,432)	173,466
Unrealized gain on assets denominated in foreign currencies, net	(7,088)	(648)
Unrealized gain on derivative financial instruments, net	(3,298)	(754)
Realized loss (gain) on derivative financial instruments, net	5,483	(481)
Changes in assets and liabilities, net
Other assets	(12,106)	8,713
Other liabilities	13,468	(4,852)
Net cash provided by operating activities	255,022	261,296
Cash flows from investing activities
Origination and fundings of loans receivable	(7,449,491)	(1,489,101)
Principal collections and sales proceeds from loans receivable and debt securities	3,423,460	1,358,640
Origination and exit fees received on loans receivable	79,971	14,215
Receipts under derivative financial instruments	44,428	87,286
Payments under derivative financial instruments	(75,458)	(98,216)
Collateral deposited under derivative agreements	(94,060)	(255,830)
Return of collateral deposited under derivative agreements	145,110	277,280
Net cash used in investing activities	(3,926,040)	(105,726)
Cash flows from financing activities
Borrowings under secured debt	7,701,481	2,317,616
Repayments under secured debt	(4,239,614)	(3,506,154)
Proceeds from issuance of securitized debt obligations	803,750	1,243,125
Repayment of securitized debt obligations	(888,763)	(253,260)
Borrowings under asset-specific debt	106,443	111,225
Repayments under asset-specific debt	(178,073)	(82,754)
Net proceeds from issuance of term loans	298,500	315,438
Repayments of term loans	(10,060)	(6,428)
Payment of deferred financing costs	(29,339)	(34,726)
Contributions from non-controlling interests	47,261	8,431
Distributions to non-controlling interests	(33,581)	(11,793)
Net proceeds from issuance of class A common stock	311,955	278,322
Dividends paid on class A common stock	(273,311)	(258,264)
Net cash provided by financing activities	3,616,649	120,778
Net (decrease) increase in cash, cash equivalents, and restricted cash	(54,369)	276,348
Cash, cash equivalents, and restricted cash at beginning of period	289,970	150,090
Effects of currency translation on cash, cash equivalents, and restricted cash	579	590
Cash, cash equivalents, and restricted cash at end of period	236,180	427,028
Supplemental disclosure of cash flows information
Payments of interest	(207,293)	(242,564)
Receipts (payments) of income taxes	107	(146)
Supplemental disclosure of non-cash investing and financing activities
Dividends declared, not paid	(97,552)	(90,642)
Satisfaction of management and incentive fees in stock	0	19,277
Loan principal payments held by servicer, net	$ 299	$ 3,235