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Credit Quality and the Allowance for Loan and Lease Losses - Summary of the Amortized Cost Basis of the Bancorp's Collateral Dependent Loans (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Financing Receivable, Impaired |  |
Total portfolio loans and leases | $ 781 | $ 594
Commercial |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 522 | 346
Commercial | Commercial and industrial loans |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 380 | 322
Commercial | Commercial mortgage owner-occupied loans |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 66 | 19
Commercial | Commercial mortgage nonowner-occupied loans |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 10 | 5
Commercial | Commercial construction loans |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 62 | 0
Commercial | Commercial leases |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 4 | 0
Residential Mortgage |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 153 | 143
Consumer |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 106 | 105
Consumer | Home equity |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | 71 | 70
Consumer | Indirect secured consumer loans |  |
Financing Receivable, Impaired |  |
Loans and leases receivable, allowance for amortized cost basis | $ 35 | $ 35

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