Loans and ACL - Summary of Loan Modification Effects (Details)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Commercial and industrial: Secured \| Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment Delay Term	8 months	4 months
Weighted-Average Interest Rate Reduction	10.00%
Commercial and industrial: Secured \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (Years)	1 year 10 days	3 years
Commercial mortgage owner occupied \| Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment Delay Term		7 months
Commercial mortgage owner occupied \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (Years)	15 years	3 years
Agricultural mortgage \| Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment Delay Term	4 months	5 months
Agricultural mortgage \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (Years)		6 years 3 months 7 days
Agricultural other \| Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment Delay Term		4 months
Agricultural other \| Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Interest Rate Reduction		0.50%
Agricultural other \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (Years)	6 months	3 months 29 days
Senior Lien \| Other-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Payment Delay Term	6 months
Consumer: Secured - indirect \| Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (Years)		1 year 3 months 29 days

Financing Receivable, Modified, Weighted Average Extended Maturity from Modification

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- Definition

Financing Receivable, Modified, Weighted Average Payment Deferral from Modification

+ References

No definition available.

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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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-Topic 310
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- Definition

Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

+ References

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