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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Loans and Leases - Schedule of Loans by Portfolio Segment (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 62,565	$ 61,292
Allowance for loan and lease losses	(815)	(773)	$ (685)	$ (670)
Net loans and leases	61,750	60,519
Commercial \| Commercial and Industrial, Excluding Loans to Mortgage Companies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	29,957	30,609
Commercial \| Commercial and Industrial, Excluding Loans to Mortgage Companies \| Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property, plant, and equipment and finance lease right-of-use asset	1,400	1,200
Commercial \| Loans to mortgage companies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	3,471	2,024
Commercial \| Commercial, financial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	33,428	32,633
Allowance for loan and lease losses	(345)	(339)	(308)	(334)
Commercial \| Commercial, financial and industrial \| Paycheck Protection Plan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	12	29	76
Commercial \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,421	14,216
Allowance for loan and lease losses	(227)	(172)	(146)	(154)
Commercial \| Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	174	180
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,047	13,650
Consumer \| Home Equity Line of Credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,092	2,219
Consumer \| Real estate installment loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	11,955	11,431
Consumer \| Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	669	793
Allowance for loan and lease losses	$ (22)	$ (29)	$ (31)	$ (19)