Loans and ACL - Summary of Modifications' Financial Effect (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2025 Rate	Jun. 30, 2024 Rate	Jun. 30, 2025 Rate	Jun. 30, 2024 Rate
Commercial: | Commercial and industrial | Renewals
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	14 months	28 months	12 months	22 months
Financing Receivable, Modified, Weighted Average Interest Rate Adjustment from Modification	0.40%	0.05%	0.40%	0.20%
Commercial: | Commercial and industrial | Payment Delays
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification			180 days	97 days
Commercial: | CRE | Renewals
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	13 months	15 months	15 months	8 months
Financing Receivable, Modified, Weighted Average Interest Rate Adjustment from Modification	0.20%	0.01%	0.10%	0.27%
Commercial: | Commercial construction | Renewals
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	2 months	10 months	6 months	12 months
Financing Receivable, Modified, Weighted Average Interest Rate Adjustment from Modification		0.80%		0.10%
Consumer: | Residential mortgage | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	90 months	103 months	96 months	105 months
Consumer: | Residential mortgage | Payment Delays
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	235 days	198 days	230 days	198 days
Consumer: | Residential mortgage | Combination - Capitalization and Term Extension
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	94 months	82 months	96 months	83 months
Consumer: | Home equity | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification		170 months		161 months
Consumer: | Indirect auto | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	28 months	26 months	28 months	26 months
Consumer: | Indirect auto | Payment Delays
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	247 days	193 days	246 days	186 days
Consumer: | Other consumer | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification	32 months	22 months	29 months	24 months
Consumer: | Other consumer | Payment Delays
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Term Increase from Modification				157 days
Consumer: | Credit card | Contractual Interest Rate Adjustments
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Interest Rate Adjustment from Modification	(17.00%)		(17.00%)
Consumer: | Automobiles | Contractual Interest Rate Adjustments
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified, Weighted Average Interest Rate Adjustment from Modification			(7.00%)