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Percentage Contributed By Segment Loans

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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.

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Amount, before allowance for credit loss, of accrued interest on financing receivable.

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Loans and Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest	$ 262	$ 262		$ 271
Net loans and leases	62,281	62,281		61,750
Loans and leases	$ 63,058	$ 63,058		62,565
Credit Card Workout Program rate reduction, interest rate floor		0.00%
Credit Card Workout Program term extension, maximum period		5 years
Loans modified with subsequent default, amount		$ 21	$ 1
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Card Hardship Program, rate and payment reduction, period		6 months
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Card Hardship Program, rate and payment reduction, period		1 year
Commercial: \| Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial loan grades	1	1
Commercial: \| Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial loan grades	16	16
Commercial: \| Loans to mortgage companies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 3,926	$ 3,926		3,471
Commercial: \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	34,401	34,401		33,428
Commercial: \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	13,675	13,675		14,421
Finance and Insurance Companies \| Commercial: \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 3,900	$ 3,900
Financial Services Industry Loans \| Commercial: \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage contributed	22.00%	22.00%
C&I \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 430	$ 430		352
C&I \| Commercial: \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	30,475	30,475		29,957
C&I \| Commercial: \| Commercial and industrial \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	177	177
Commercial Real Estate \| Commercial: \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	13,675	13,675		14,421
Commercial Real Estate \| Commercial: \| Commercial real estate \| Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	253	253
Asset Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans and leases	45,700	45,700		45,800
Asset Pledged as Collateral \| C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss, writeoff, collateral	15	52
Asset Pledged as Collateral \| Home Equity Line of Credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	6	6		6
Financing receivable, allowance for credit loss, writeoff, collateral		2	$ 1
Asset Pledged as Collateral \| R E Installment Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 41	$ 41		$ 36