Commitments and Contingencies - Schedule of Credit-Related Commitments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Loan commitments
Commitments to Extend Credit
Expire in One Year or Less	$ 4,973,406
Expire After One Year Through Three Years	3,600,347
Expire After Three Years Through Five Years	737,276
Expire After Five Years	66,026
Total	9,377,055	$ 9,128,040
Commercial letters of credit and standby letters of credit (“SBLCs”)
Commitments to Extend Credit
Expire in One Year or Less	1,383,663
Expire After One Year Through Three Years	471,735
Expire After Three Years Through Five Years	183,050
Expire After Five Years	1,025,145
Total	3,063,593	2,917,029
Commitments to Extend Credit
Commitments to Extend Credit
Expire in One Year or Less	6,357,069
Expire After One Year Through Three Years	4,072,082
Expire After Three Years Through Five Years	920,326
Expire After Five Years	1,091,171
Total	$ 12,440,648	$ 12,045,069