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Income Taxes (Summary Of Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Deferred Tax Assets [Abstract] |  |
Unrealized losses included in shareholders' equity | $ 961 | $ 1,138
Allowance for loan losses | 430 | 401
Deferred tax asset, right of use liability | 129 | 136
Accrued expenses | 87 | 61
Other | 20 | 47
State net operating carryforwards, net of federal tax effect | 31 | 40
Total deferred tax assets | 1,658 | 1,823
Deferred Tax Assets, Valuation Allowance | (21) | (21)
Total deferred tax assets less valuation allowance | 1,637 | 1,802
Deferred Tax Liabilities [Abstract] |  |
Lease financing | 439 | 403
Deferred Tax Liabilities, Right of use asset | 121 | 128
Mortgage servicing rights | 95 | 122
Goodwill and intangibles | 112 | 103
Fixed assets | 30 | 52
Employee benefits and deferred compensation | 37 | 29
Other | 62 | 22
Total deferred tax liabilities | 896 | 859
Deferred Tax Assets, Net | 741 | 943
Income Tax Contingency [Line Items] |  |
State net operating carryforwards, net of federal tax effect | $ 31 | $ 40

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