Commitments, Off-Balance Sheet Arrangements, Legal Proceedings and Regulatory Matters, Summary of Lending Related and Other Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
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)
Summary of lending-related and other commitments
Lending related commitments	10,973,357	10,848,136
Commercial letters of credit(a)
Summary of lending-related and other commitments
Lending related commitments	9,827	5,992
Standby letters of credit(c)
Summary of lending-related and other commitments
Lending related commitments	$ 257,039	$ 248,292