Loans and Allowance for Credit Losses for Loans - Schedule of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 46,917,200	$ 34,153,657
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,804,830	5,847,551
Loans, deferred income, PPP	667	12,100
Commercial and industrial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,771,250	5,411,601
Commercial and industrial | Commercial and industrial PPP loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	33,580	435,950
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	29,432,868	20,790,066
Commercial real estate | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	25,732,033	18,935,486
Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,700,835	1,854,580
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,364,550	4,545,064
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,314,952	2,970,976
Home equity | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	503,884	400,779
Home equity | Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,746,225	1,570,036
Home equity | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,064,843	$ 1,000,161