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Loans And The Allowance For Credit Losses (Analysis Of The Allowance For Credit Losses By Portfolio Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2022
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Allowance for loan losses, beginning of period | $ 1,621 | $ 1,513 | $ 1,576 | $ 1,464 |
Cumulative change in accounting guidance |  |  |  |  | $ (38)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance |  |  |  |  | 1,426
Provision (credit) for loan losses | 103 | 135 | 370 | 386 |
Loan Losses: |  |  |  |  |
Charge-offs | (143) | (124) | (407) | (341) |
Recoveries | 26 | 23 | 68 | 76 |
Net loan losses | (117) | (101) | (339) | (265) |
Total allowance for loan losses | 1,607 | 1,547 | 1,607 | 1,547 |
Reserve For Unfunded Credit Commitments [Roll Forward] |  |  |  |  |
Reserve for unfunded credit commitments, beginning of year | 111 | 120 | 124 | 118 |
Provision (credit) for unfunded credit losses | 10 | 10 | (3) | 12 |
Reserve for unfunded credit commitments, end of year | 121 | 130 | 121 | 130 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 1,728 | 1,677 | 1,728 | 1,677 |
Commercial Portfolio Segment [Member] |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Allowance for loan losses, beginning of period | 736 | 708 | 722 | 665 |
Cumulative change in accounting guidance |  |  |  |  | (3)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance |  |  |  |  | 662
Provision (credit) for loan losses | 47 | 25 | 166 | 141 |
Loan Losses: |  |  |  |  |
Charge-offs | (71) | (54) | (194) | (155) |
Recoveries | 15 | 13 | 33 | 44 |
Net loan losses | (56) | (41) | (161) | (111) |
Total allowance for loan losses | 727 | 692 | 727 | 692 |
Reserve For Unfunded Credit Commitments [Roll Forward] |  |  |  |  |
Reserve for unfunded credit commitments, beginning of year | 85 | 82 | 92 | 72 |
Provision (credit) for unfunded credit losses | 8 | 8 | 1 | 18 |
Reserve for unfunded credit commitments, end of year | 93 | 90 | 93 | 90 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 820 | 782 | 820 | 782 |
Total Investor Real Estate [Member] |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Allowance for loan losses, beginning of period | 233 | 151 | 192 | 121 |
Cumulative change in accounting guidance |  |  |  |  | (3)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance |  |  |  |  | 118
Provision (credit) for loan losses | 10 | 17 | 54 | 50 |
Loan Losses: |  |  |  |  |
Charge-offs | (12) | 0 | (17) | 0 |
Recoveries | 0 | 0 | 2 | 0 |
Net loan losses | (12) | 0 | (15) | 0 |
Total allowance for loan losses | 231 | 168 | 231 | 168 |
Reserve For Unfunded Credit Commitments [Roll Forward] |  |  |  |  |
Reserve for unfunded credit commitments, beginning of year | 8 | 19 | 13 | 21 |
Provision (credit) for unfunded credit losses | 2 | 0 | (3) | (2) |
Reserve for unfunded credit commitments, end of year | 10 | 19 | 10 | 19 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 241 | 187 | 241 | 187 |
Consumer Portfolio Segment [Member] |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Allowance for loan losses, beginning of period | 652 | 654 | 662 | 678 |
Cumulative change in accounting guidance |  |  |  |  | (32)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance |  |  |  |  | $ 646
Provision (credit) for loan losses | 46 | 93 | 150 | 195 |
Loan Losses: |  |  |  |  |
Charge-offs | (60) | (70) | (196) | (186) |
Recoveries | 11 | 10 | 33 | 32 |
Net loan losses | (49) | (60) | (163) | (154) |
Total allowance for loan losses | 649 | 687 | 649 | 687 |
Reserve For Unfunded Credit Commitments [Roll Forward] |  |  |  |  |
Reserve for unfunded credit commitments, beginning of year | 18 | 19 | 19 | 25 |
Provision (credit) for unfunded credit losses | 0 | 2 | (1) | (4) |
Reserve for unfunded credit commitments, end of year | 18 | 21 | 18 | 21 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | $ 667 | $ 708 | $ 667 | $ 708 |

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