Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters, Summary of Lending Related and Other Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments, Fair Value	$ 0	$ 0
Commitments to extend credit, excluding commitments to originate residential mortgage loans held for sale(a)(b)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	11,228,683	12,444,275
Commercial letters of credit(a)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	4,067	3,188
Standby letters of credit(c)
Schedule of lending-related and other commitments [Line Items]
Lending Related Commitments By Type [Domain]	246,954	270,692
Lines of Credit, Fair Value Disclosure	$ 3,000	$ 3,000