Loans Receivable, Net - Activity Relating to Loans Receivable Portfolio (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Principal Balance
Beginning balance	$ 22,156,437	$ 16,652,824
Loan fundings	6,810,218	12,550,463
Loan repayments and sales proceeds	(3,168,155)	(6,733,105)
Principal charge-offs		(14,427)
Unrealized (loss) gain on foreign currency translation	(638,157)	(299,318)
Ending balance	25,160,343	22,156,437	$ 16,652,824
Deferred Fees / Other Items
Beginning balance	(153,420)	(80,109)
Unrealized (loss) gain on foreign currency translation	5,255	1,424
Deferred fees and other items	(74,930)	(143,002)
Amortization of fees and other items	80,632	68,267
Ending balance	(142,463)	(153,420)	(80,109)
Net Book Value
Beginning balance	22,003,017	16,572,715
Loan fundings	6,810,218	12,550,463
Loan repayments and sales proceeds	(3,168,155)	(6,733,105)
Principal charge-offs	0	(14,427)	0
Unrealized (loss) gain on foreign currency translation	(632,902)	(297,894)
Deferred fees and other items	(74,930)	(143,002)
Amortization of fees and other items	80,632	68,267
Ending balance	25,017,880	22,003,017	16,572,715
CECL reserve	(326,137)	(124,679)	(173,549)
Loans receivable, net	24,691,743	21,878,338
Impaired loans
Principal Balance
Principal charge-offs		(14,427)
Net Book Value
Beginning balance	284,809
Ending balance	929,111	284,809
CECL reserve	$ (189,778)	$ (54,874)	$ (69,661)