Commitments and Contingencies - Credit-Related Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments to Extend Credit
Expire in One Year or Less	$ 312,795
Expire After Five Years	5,114
Total	452,451
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	3,680,606
Expire After One Year Through Three Years	3,469,265
Expire After Three Years Through Five Years	971,534
Expire After Five Years	90,166
Total	8,211,571	$ 6,911,398
Commercial letters of credit and SBLCs
Commitments to Extend Credit
Expire in One Year or Less	677,255
Expire After One Year Through Three Years	462,367
Expire After Three Years Through Five Years	69,815
Expire After Five Years	1,082,529
Total	2,291,966	2,221,699
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	4,357,861
Expire After One Year Through Three Years	3,931,632
Expire After Three Years Through Five Years	1,041,349
Expire After Five Years	1,172,695
Total	$ 10,503,537	$ 9,133,097