Credit Quality and the Allowance for Loan and Lease Losses - Summary of Financial Impacts of Loans That Were Modified for Borrowers Experiencing Financial Difficulty (Details)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Commercial \| Commercial and industrial loans
Financing Receivable, Modifications
Weighted-average length of term extensions	9 months	11 months
Weighted-average length of payment delay	15 months	23 months
Commercial \| Commercial mortgage owner-occupied loans:
Financing Receivable, Modifications
Weighted-average length of term extensions	10 months	15 months
Weighted-average length of payment delay	15 months
Commercial \| Commercial mortgage nonowner-occupied loans:
Financing Receivable, Modifications
Weighted-average length of term extensions	20 months	16 months
Commercial \| Commercial construction loans
Financing Receivable, Modifications
Weighted-average length of term extensions	12 months	12 months
Residential Mortgage
Financing Receivable, Modifications
Weighted-average length of term extensions	10 years 4 months 24 days	12 years 10 months 24 days
Financing receivable, modified, payment deferral, percentage of related loan balance	13.00%	17.00%
Consumer \| Home equity
Financing Receivable, Modifications
Weighted-average length of term extensions	22 years 9 months 18 days	24 years 2 months 12 days
Financing receivable, modified, payment deferral, percentage of related loan balance	5.00%	5.00%
Weighted-average interest rate, before modification	9.20%	8.70%
Weighted-average interest rate, after modification	7.20%	7.00%
Consumer \| Credit card
Financing Receivable, Modifications
Weighted-average interest rate, before modification	23.90%	23.70%
Weighted-average interest rate, after modification	4.10%	3.90%

Financing Receivable, Excluding Interest, Modified, Weighted-Average Interest Rate After Modification

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- Definition

Financing Receivable, Excluding Interest, Modified, Weighted-Average Interest Rate Before Modification

+ References

No definition available.

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- Definition

Financing Receivable, Modified, Payment Deferral, Percentage Of Related Loan Balance

+ References

No definition available.

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- Definition

Financing Receivable, Modified, Weighted Average Payment Delay Increase From Modification

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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