Commitments and Contingencies - Schedule of Credit-Related Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Commitments to Extend Credit
Expire in One Year or Less	$ 304,008
Expire After Five Years	5,478
Total	407,864
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	4,741,319
Expire After One Year Through Three Years	3,640,167
Expire After Three Years Through Five Years	661,403
Expire After Five Years	85,151
Total	9,128,040	$ 9,141,447
Commercial letters of credit and SBLCs
Commitments to Extend Credit
Expire in One Year or Less	1,152,114
Expire After One Year Through Three Years	465,073
Expire After Three Years Through Five Years	194,483
Expire After Five Years	1,105,359
Total	2,917,029	2,610,761
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	5,893,433
Expire After One Year Through Three Years	4,105,240
Expire After Three Years Through Five Years	855,886
Expire After Five Years	1,190,510
Total	$ 12,045,069	$ 11,752,208