Commitments and Contingencies - Schedule of Credit-Related Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	$ 4,903,605
Expire After One Year Through Three Years	3,544,716
Expire After Three Years Through Five Years	573,813
Expire After Five Years	85,556
Total	9,107,690	$ 9,128,040
Commercial letters of credit and standby letters of credit (“SBLCs”)
Commitments to Extend Credit
Expire in One Year or Less	1,224,212
Expire After One Year Through Three Years	489,327
Expire After Three Years Through Five Years	188,238
Expire After Five Years	1,030,884
Total	2,932,661	2,917,029
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	6,127,817
Expire After One Year Through Three Years	4,034,043
Expire After Three Years Through Five Years	762,051
Expire After Five Years	1,116,440
Total	$ 12,040,351	$ 12,045,069