Allowance for Credit Losses - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) contract loan	Dec. 31, 2021	Dec. 31, 2021 USD ($)	Dec. 31, 2021 contract	Dec. 31, 2021 loan	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Accrued interest related to financial assets held at amortized cost	$ 304,500,000	$ 214,000,000
Financial Asset, Amortized Cost, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable and Other Assets	Interest Receivable and Other Assets
Nonaccrual loans with no related allowance for credit losses	$ 38,100,000
Provision for credit losses	114,531,000	$ 78,179,000
Loan net charge-offs	45,500,000
Provision for credit losses	(141,000)	$ 410,000
Foreclosed residential real estate properties	720,000
TDRs, count		40			64	64
TDRs, balance		$ 13,377,000		$ 13,869,000
Weighted average extension term		69 months	83 months
Weighted average decrease in stated interest rate		0.88%					1.37%
Interest-only payment terms		8 months	3 months
Loan forgiveness		$ 0		$ 0
Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans modified in TDRs		$ 41,100,000
TDRs, count | contract		191
Financing Receivable | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Recorded investment, foreclosure proceedings in process	53,300,000	$ 59,500,000
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	$ 52,913,000	$ 40,447,000