Derivatives - Fair Value of Derivative Contracts (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	$ 1,316	$ 5,384
Liabilities	2,259	4,430
Notional Amounts	62,637,998	10,114,544
FX swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	901	4,810
Liabilities	1,217	3,679
Notional Amounts	1,332,685	635,790
Forwards
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	397	409
Liabilities	216	751
Notional Amounts	1,280,782	185,821
Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	18	0
Liabilities	0	0
Notional Amounts	52,266,392	534,085
Futures
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	0	165
Liabilities	826	0
Notional Amounts	$ 7,758,139	$ 8,758,848