Loans and Leases - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable
Unearned income	$ 391	$ 384
Accrued interest receivable	771	534
Net discount	311	216
Solar energy installation loans
Accounts, Notes, Loans and Financing Receivable
Net discount	803	872
Federal Home Loan Bank Advances
Accounts, Notes, Loans and Financing Receivable
Loans pledged	16,200	14,900
FRB Loan
Accounts, Notes, Loans and Financing Receivable
Loans pledged	$ 84,100	$ 60,100

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 of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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