Commitments and Contingencies - Credit-Related Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Commitments to Extend Credit
Expire in One Year or Less	$ 339,628
Expire After Five Years	10,413
Total	550,736
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	4,576,927
Expire After One Year Through Three Years	3,511,660
Expire After Three Years Through Five Years	889,219
Expire After Five Years	163,641
Total	9,141,447	$ 8,211,571
Commercial letters of credit and SBLCs
Commitments to Extend Credit
Expire in One Year or Less	953,220
Expire After One Year Through Three Years	387,008
Expire After Three Years Through Five Years	137,758
Expire After Five Years	1,132,775
Total	2,610,761	2,291,966
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	5,530,147
Expire After One Year Through Three Years	3,898,668
Expire After Three Years Through Five Years	1,026,977
Expire After Five Years	1,296,416
Total	$ 11,752,208	$ 10,503,537