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Credit Quality and the Allowance for Loan and Lease Losses - Summary of Amortized Cost Basis of Modifications to 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, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | $ 45 | $ 25 | $ 96 | $ 63
Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 2 | 1 | 10
Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 4 | 7 | 9
Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 18 | 4 | 45 | 7
Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 1
Term Extension and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 20 | 12 | 35 | 33
Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 5 | 3 | 8 | 3
Commercial | Commercial and industrial loans |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 19 | 7 | 48 | 24
Commercial | Commercial and industrial loans | Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 2 | 1 | 10
Commercial | Commercial and industrial loans | Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Commercial | Commercial and industrial loans | Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 18 | 3 | 45 | 5
Commercial | Commercial and industrial loans | Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 1
Commercial | Commercial and industrial loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 2 | 2 | 8
Commercial | Commercial and industrial loans | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Commercial | Commercial mortgage owner-occupied loans |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 11 | 0 | 11 | 0
Commercial | Commercial mortgage owner-occupied loans | Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Commercial | Commercial mortgage owner-occupied loans | Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Commercial | Commercial mortgage owner-occupied loans | Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Commercial | Commercial mortgage owner-occupied loans | Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Commercial | Commercial mortgage owner-occupied loans | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 11 | 0 | 11 | 0
Commercial | Commercial mortgage owner-occupied loans | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Residential Mortgage |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 13 | 13 | 29 | 29
Residential Mortgage | Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Residential Mortgage | Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Residential Mortgage | Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 1 | 0 | 2
Residential Mortgage | Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Residential Mortgage | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 9 | 10 | 22 | 25
Residential Mortgage | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 4 | 2 | 7 | 2
Consumer | Home equity |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 1 | 2 | 2
Consumer | Home equity | Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Home equity | Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 1 | 1
Consumer | Home equity | Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Home equity | Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Home equity | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Home equity | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 1 | 1 | 1
Consumer | Credit card |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 4 | 6 | 8
Consumer | Credit card | Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Credit card | Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 1 | 4 | 6 | 8
Consumer | Credit card | Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Credit card | Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Credit card | Term Extension and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | 0 | 0 | 0 | 0
Consumer | Credit card | Term Extension, Interest Rate Reduction and Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |  |
Amortized cost basis of the modifications to borrowers experiencing financial difficulty | $ 0 | $ 0 | $ 0 | $ 0

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