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Credit Quality and the Allowance for Loan and Lease Losses - Summary of Amortized Cost Basis of Loans Modified for Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 349 | $ 184 | $ 609 | $ 373
% of Total Class | 0.28% | 0.16% | 0.49% | 0.32%
Commercial |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 308 | $ 150 | $ 507 | $ 268
% of Total Class | 0.43% | 0.22% | 0.71% | 0.39%
Commercial | Term Extension |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 266 | $ 129 | $ 404 | $ 223
Commercial | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 11 | 2 | 14 | 20
Commercial | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 28 | 19 | 85 | 24
Commercial | Other |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 3 | 0 | 4 | 1
Commercial | Commercial and industrial loans |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 137 | $ 105 | $ 237 | $ 208
% of Total Class | 0.25% | 0.21% | 0.44% | 0.41%
Commercial | Commercial and industrial loans | Term Extension |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 137 | $ 84 | $ 193 | $ 164
Commercial | Commercial and industrial loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 2 | 3 | 20
Commercial | Commercial and industrial loans | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 19 | 40 | 23
Commercial | Commercial and industrial loans | Other |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 1 | 1
Commercial | Commercial mortgage owner-occupied loans |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 75 | $ 11 | $ 112 | $ 26
% of Total Class | 1.24% | 0.20% | 1.85% | 0.48%
Commercial | Commercial mortgage owner-occupied loans | Term Extension |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 64 | $ 11 | $ 100 | $ 25
Commercial | Commercial mortgage owner-occupied loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 11 | 0 | 11 | 0
Commercial | Commercial mortgage owner-occupied loans | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 1 | 1
Commercial | Commercial mortgage owner-occupied loans | Other |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Commercial | Commercial mortgage nonowner-occupied loans |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 68 | $ 28 | $ 68 | $ 28
% of Total Class | 1.15% | 0.47% | 1.15% | 0.47%
Commercial | Commercial mortgage nonowner-occupied loans | Term Extension |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 65 | $ 28 | $ 65 | $ 28
Commercial | Commercial mortgage nonowner-occupied loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Commercial | Commercial mortgage nonowner-occupied loans | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Commercial | Commercial mortgage nonowner-occupied loans | Other |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 3 | 0 | 3 | 0
Commercial | Commercial construction loans |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 28 | $ 6 | $ 90 | $ 6
% of Total Class | 0.53% | 0.10% | 1.69% | 0.10%
Commercial | Commercial construction loans | Term Extension |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 6 | $ 46 | $ 6
Commercial | Commercial construction loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Commercial | Commercial construction loans | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 28 | 0 | 44 | 0
Commercial | Commercial construction loans | Other |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Residential Mortgage |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 29 | $ 22 | $ 72 | $ 74
% of Total Class | 0.16% | 0.13% | 0.41% | 0.43%
Residential Mortgage | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 21 | $ 17 | $ 57 | $ 61
% of Total Class | 0.12% | 0.10% | 0.32% | 0.36%
Residential Mortgage | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 1 | $ 1 | $ 5
% of Total Class | 0.00% | 0.01% | 0.01% | 0.03%
Residential Mortgage | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 8 | $ 4 | $ 14 | $ 8
% of Total Class | 0.05% | 0.02% | 0.08% | 0.05%
Consumer |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 12 | $ 12 | $ 30 | $ 31
% of Total Class | 0.04% | 0.04% | 0.10% | 0.11%
Consumer | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 0 | $ 1 | $ 1
Consumer | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 1 | 1 | 5 | 3
Consumer | Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 6 | 8 | 15 | 20
Consumer | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 4 | 3 | 9 | 7
Consumer | Home equity |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 5 | $ 4 | $ 11 | $ 11
% of Total Class | 0.11% | 0.10% | 0.24% | 0.27%
Consumer | Home equity | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 1 | $ 0 | $ 1 | $ 1
Consumer | Home equity | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Consumer | Home equity | Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 1 | 1 | 3
Consumer | Home equity | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 4 | 3 | 9 | 7
Consumer | Credit card |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 6 | $ 7 | $ 14 | $ 17
% of Total Class | 0.35% | 0.41% | 0.83% | 1.00%
Consumer | Credit card | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 0 | $ 0 | $ 0
Consumer | Credit card | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Consumer | Credit card | Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 6 | 7 | 14 | 17
Consumer | Credit card | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Consumer | Other consumer loans |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 1 | $ 1 | $ 3 | $ 3
% of Total Class | 0.04% | 0.04% | 0.13% | 0.12%
Consumer | Other consumer loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 0 | $ 0 | $ 0
Consumer | Other consumer loans | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 1 | 1 | 3 | 3
Consumer | Other consumer loans | Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Consumer | Other consumer loans | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Consumer | Solar energy installation loans |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 0 | $ 2 | $ 0
% of Total Class | 0.00% | 0.00% | 0.05% | 0.00%
Consumer | Solar energy installation loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 0 | $ 0 | $ 0
Consumer | Solar energy installation loans | Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 2 | 0
Consumer | Solar energy installation loans | Interest Rate Reduction |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | 0 | 0 | 0 | 0
Consumer | Solar energy installation loans | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Modifications |  |  |  |
Financing receivable, excluding accrued interest, modified in period, amount | $ 0 | $ 0 | $ 0 | $ 0

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