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Business Segment Information (Schedule Of Financial Information By Reportable Segment) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items] |  |  |
Reportable segments | segment | 3 |  |
Net interest income and other financing income (loss) | $ 5,320 | $ 4,786 | $ 3,914
Provision (credit) for credit losses | 553 | 271 | (524)
Non-interest income (loss) | 2,256 | 2,429 | 2,524
Non-interest expense (benefit) | 4,416 | 4,068 | 3,747
Income before income taxes | 2,607 | 2,876 | 3,215
Income tax expense (benefit) | 533 | 631 | 694
Net income (loss) | 2,074 | 2,245 | 2,521
Average assets | 153,017 | 159,392 | 154,269
Corporate Bank [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income and other financing income (loss) | 2,003 | 1,961 | 1,759
Provision (credit) for credit losses | 343 | 287 | 295
Non-interest income (loss) | 712 | 803 | 752
Non-interest expense (benefit) | 1,223 | 1,184 | 1,090
Income before income taxes | 1,149 | 1,293 | 1,126
Income tax expense (benefit) | 287 | 323 | 282
Net income (loss) | 862 | 970 | 844
Average assets | 69,520 | 64,532 | 59,132
Consumer Bank [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income and other financing income (loss) | 3,132 | 2,641 | 2,016
Provision (credit) for credit losses | 279 | 280 | 254
Non-interest income (loss) | 1,044 | 1,165 | 1,266
Non-interest expense (benefit) | 2,574 | 2,296 | 2,174
Income before income taxes | 1,323 | 1,230 | 854
Income tax expense (benefit) | 330 | 308 | 213
Net income (loss) | 993 | 922 | 641
Average assets | 37,762 | 36,623 | 34,309
Wealth Management [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income and other financing income (loss) | 185 | 184 | 139
Provision (credit) for credit losses | 8 | 9 | 10
Non-interest income (loss) | 457 | 426 | 390
Non-interest expense (benefit) | 427 | 404 | 387
Income before income taxes | 207 | 197 | 132
Income tax expense (benefit) | 52 | 50 | 33
Net income (loss) | 155 | 147 | 99
Average assets | 2,044 | 2,116 | 2,046
Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income and other financing income (loss) | 0 | 0 | 0
Provision (credit) for credit losses | (77) | (305) | (1,083)
Non-interest income (loss) | 43 | 35 | 116
Non-interest expense (benefit) | 192 | 184 | 96
Income before income taxes | (72) | 156 | 1,103
Income tax expense (benefit) | (136) | (50) | 166
Net income (loss) | 64 | 206 | 937
Average assets | $ 43,691 | $ 56,121 | $ 58,782

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