Loans and Allowance for Credit Losses for Loans - Schedule of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 48,799,711	$ 50,210,295
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,931,400	9,230,543
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	29,644,958	31,970,047
Commercial real estate | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	26,530,225	28,243,239
Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,114,733	3,726,808
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,632,516	5,569,010
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,590,837	3,440,695
Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	604,433	559,152
Consumer | Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,901,065	1,620,389
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,085,339	$ 1,261,154