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Loans Receivable, Net - Activity Relating to Loans Receivable Portfolio (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Principal Balance
Beginning balance	$ 19,203,126
Loan fundings	3,931,823
Loan repayments, sales, and cost-recovery proceeds	(5,048,125)
Charge-offs	(208,010)
Transfer to real estate owned	(358,088)	$ (139,239)
Transfer to other assets, net	(49,158)
Payment-in-kind interest, net of interest received	13,448
Unrealized gain (loss) on foreign currency translation	703,518
Ending balance	18,188,534
Deferred Fees / Other Items
Beginning balance	(155,608)
Loan repayments, sales, and cost-recovery proceeds	(39,424)
Charge-offs	79,018
Unrealized gain (loss) on foreign currency translation	(2,275)
Deferred fees and other items	(48,716)
Amortization of fees and other items	45,390	50,568
Ending balance	(121,615)
Net Book Value
Beginning balance	19,047,518
Loan fundings	3,931,823
Loan repayments, sales, and cost-recovery proceeds	(5,087,549)
Charge-offs	(128,992)
Transfer to real estate owned	(358,088)	(139,239)
Transfer to other assets	(49,158)
Payment-in-kind interest	13,448
Unrealized gain (loss) on foreign currency translation	701,243
Deferred fees and other items	(48,716)
Amortization of fees and other items	45,390	50,568
Ending balance	18,066,919
CECL reserve	(695,719)	$ (1,011,059)	$ (740,851)	$ (741,541)	$ (733,936)	$ (893,938)	$ (751,370)	$ (576,936)
Loans receivable, net	$ 17,371,200				$ 18,313,582

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The net increase(decrease) in interest income during the period representing the allocation of deferred loan origination fees less deferred loan origination costs using the effective interest method over the term of the debt arrangement to which they pertain taking into account the effect of prepayments.

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Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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