Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net (loss) income	$ (201,833)	$ 249,897	$ 251,057
Adjustments to reconcile net (loss) income to net cash provided by operating activities
Non-cash compensation expense	31,828	30,655	33,414
Amortization of deferred fees on loans and debt securities	(64,133)	(78,428)	(81,748)
Amortization of deferred financing costs and premiums/discounts on debt obligations	42,955	54,264	50,020
Payment-in-kind interest, net of interest received	(16,660)	(2,865)	0
Increase in current expected credit loss reserve	538,801	249,790	211,505
Straight-line rental income	151	0	0
Gain on extinguishment of debt	(5,352)	(4,616)	0
Depreciation and amortization of real estate owned	9,407	0	0
Loss from unconsolidated entities	2,748	0	0
Unrealized loss on assets denominated in foreign currencies, net	0	0	(31)
Unrealized (gain) loss on derivative financial instruments, net	(2,075)	2,769	(4,339)
Realized gain on derivative financial instruments, net	(9,987)	(28,202)	(15,609)
Changes in assets and liabilities, net
Other assets	45,170	(20,666)	(106,372)
Other liabilities	(4,567)	6,243	58,928
Net cash provided by operating activities	366,453	458,841	396,825
Cash flows from investing activities
Principal fundings of loans receivable	(1,356,208)	(1,344,130)	(6,810,218)
Principal collections, sales proceeds, and cost-recovery proceeds from loans receivable and debt securities	4,790,510	2,840,467	3,254,595
Origination and other fees received on loans receivable	31,693	17,992	74,930
Payments under derivative financial instruments	(150,027)	(233,544)	(23,057)
Receipts under derivative financial instruments	90,221	163,682	353,325
Collateral deposited under derivative agreements	(191,780)	(352,120)	(217,220)
Return of collateral deposited under derivative agreements	290,470	351,730	114,110
Investment in unconsolidated entities	(7,200)	0	0
Capital expenditures on real estate owned	(590)	0	0
Net cash provided by (used in) investing activities	3,497,089	1,444,077	(3,253,535)
Cash flows from financing activities
Proceeds from sale of loan participations	0	100,692	245,278
Repayments of loan participations	(235,960)	0	0
Net proceeds from term loan borrowings	646,750	0	807,750
Proceeds from issuance of senior secured notes	450,000	0	0
Net proceeds from issuance of convertible notes	0	0	294,000
Payment of deferred financing costs	(30,787)	(23,215)	(45,996)
Contributions from non-controlling interests	1,245	0	5,040
Distributions to non-controlling interests	(16,412)	(8,955)	(12,573)
Net proceeds from issuance of class A common stock	0	0	70,651
Dividends paid on class A common stock	(404,016)	(426,927)	(421,386)
Repurchases of class A common stock	(29,233)	0	0
Net cash used in financing activities	(3,882,684)	(1,847,943)	2,607,224
Net (decrease) increase in cash and cash equivalents	(19,142)	54,975	(249,486)
Cash and cash equivalents at beginning of year	350,014	291,340	551,154
Effects of currency translation on cash and cash equivalents	(7,389)	3,699	(10,328)
Cash and cash equivalents at end of year	323,483	350,014	291,340
Supplemental disclosure of cash flows information
Payments of interest	(1,261,379)	(1,292,598)	(608,259)
Payments of income taxes	(4,483)	(6,668)	(676)
Supplemental disclosure of non-cash investing and financing activities
Dividends declared, not paid	(81,214)	(107,390)	(106,455)
Loan principal payments held by servicer, net	109,457	48,287	7,425
Transfer of senior loan to real estate owned	590,937	0	0
Assumption of other assets and liabilities related to real estate owned	168,249	0	0
Accrued capital expenditures on real estate owned	1,176	0	0
Secured debt, net
Cash flows from financing activities
Borrowings under long-term debt	1,433,578	1,636,899	5,282,882
Repayments and repurchases of long-term debt	(4,176,428)	(2,742,450)	(3,578,806)
Securitized debt obligations, net
Cash flows from financing activities
Repayments and repurchases of long-term debt	(666,004)	(166,027)	(182,084)
Asset-specific debt, net
Cash flows from financing activities
Borrowings under long-term debt	224,014	292,019	770,665
Repayments and repurchases of long-term debt	0	(239,037)	(208,644)
Secured term loans, net
Cash flows from financing activities
Repayments and repurchases of long-term debt	(1,020,785)	(21,997)	(17,053)
Senior secured notes, net
Cash flows from financing activities
Repayments and repurchases of long-term debt	(27,222)	(28,945)	0
Convertible notes, net
Adjustments to reconcile net (loss) income to net cash provided by operating activities
Amortization of deferred financing costs and premiums/discounts on debt obligations	1,227	1,589	2,853
Cash flows from financing activities
Repayments and repurchases of long-term debt	$ (31,424)	$ (220,000)	$ (402,500)