Variable Interest Entities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Loans receivable	$ 23,787,012	$ 25,017,880	$ 22,003,017
Current expected credit loss reserve	(576,936)	(326,137)	$ (124,679)
Loans receivable, net	23,210,076	24,691,743
Other assets	476,088	370,902
Total assets	24,036,178	25,353,985
Liabilities
Securitized debt obligations, net	2,505,417	2,664,010
Other liabilities	362,531	426,904
Total liabilities	19,648,674	20,809,785
VIE
Assets
Loans receivable	3,061,278	3,317,316
Current expected credit loss reserve	(183,508)	(93,396)
Loans receivable, net	2,877,770	3,223,920
Other assets	103,692	15,995
Total assets	2,981,462	3,239,915
Liabilities
Securitized debt obligations, net	2,505,417	2,664,010
Other liabilities	8,101	7,234
Total liabilities	$ 2,513,518	$ 2,671,244