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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

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