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Income Taxes (Summary Of Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Deferred Tax Assets [Abstract] |  |
Unrealized losses included in shareholders' equity | $ 1,138 | $ 0
Allowance for loan losses | 401 | 400
Deferred tax asset, right of use liability | 136 | 132
Accrued expenses | 61 | 32
Other | 47 | 15
State net operating carryforwards, net of federal tax effect | 40 | 53
Total deferred tax assets | 1,823 | 632
Deferred Tax Assets, Valuation Allowance | (21) | (29)
Total deferred tax assets less valuation allowance | 1,802 | 603
Deferred Tax Liabilities [Abstract] |  |
Lease financing | 403 | 369
Deferred Tax Liabilities, Right of use asset | 128 | 123
Mortgage servicing rights | 122 | 78
unrealized gains included in shareholder's equity' deferred tax liability | 0 | 98
Goodwill and intangibles | 103 | 100
Fixed assets | 52 | 67
Employee benefits and deferred compensation | 29 | 31
Other | 22 | 43
Total deferred tax liabilities | 859 | 909
Deferred Tax Assets, Net | 943 |
Deferred Tax Liabilities, Net |  | (306)
Income Tax Contingency [Line Items] |  |
State net operating carryforwards, net of federal tax effect | $ 40 | $ 53

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