Commitments and Contingencies - Schedule of Credit-Related Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Commitments to Extend Credit
Expire in One Year or Less	$ 279,856
Expire After Five Years	4,253
Total	337,496
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	4,927,242
Expire After One Year Through Three Years	3,887,543
Expire After Three Years Through Five Years	716,718
Expire After Five Years	92,460
Total	9,623,963	$ 9,128,040
Commercial letters of credit and SBLCs
Commitments to Extend Credit
Expire in One Year or Less	1,265,040
Expire After One Year Through Three Years	560,517
Expire After Three Years Through Five Years	153,113
Expire After Five Years	977,620
Total	2,956,290	2,917,029
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	6,192,282
Expire After One Year Through Three Years	4,448,060
Expire After Three Years Through Five Years	869,831
Expire After Five Years	1,070,080
Total	$ 12,580,253	$ 12,045,069