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Business Segment Information (Schedule Of Financial Information By Reportable Segment) (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) segment | Sep. 30, 2024 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Reportable segments | segment |  |  | 3 |
Net interest income and other financing income (loss) | $ 1,257 | $ 1,218 | $ 3,710 | $ 3,588
Provision for credit losses | 105 | 113 | 355 | 367
Total Noninterest Income | 659 | 572 | 1,895 | 1,680
Salaries and employee benefits | 671 | 645 | 1,954 | 1,912
Equipment and software expense | 106 | 101 | 309 | 302
Net occupancy expense | 72 | 69 | 214 | 211
Other expenses (benefits) | 254 | 254 | 738 | 779
Total non-interest expense | 1,103 | 1,069 | 3,215 | 3,204
Income before income taxes | 708 | 608 | 2,035 | 1,697
Income tax expense (benefit) | 139 | 118 | 413 | 338
Net income (loss) | 569 | 490 | 1,622 | 1,359
Average assets | 159,089 | 154,667 | 157,988 | 152,998
Service charges on deposit accounts |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 160 | 158 | 472 | 457
Card and ATM fees |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 122 | 118 | 364 | 354
Investment management and trust fee income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 91 | 85 | 267 | 249
Capital markets income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 104 | 92 | 267 | 251
Mortgage income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 38 | 36 | 126 | 111
Investment Services Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 48 | 43 | 134 | 120
Commercial Credit Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 28 | 28 | 84 | 83
Bank-owned life insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 25 | 28 | 72 | 81
Securities gains, net [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | (27) | (78) | (53) | (178)
Market value adjustments on employee benefit assets - other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 12 | 13 | 25 | 30
Other miscellaneous income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 58 | 49 | 137 | 122
Corporate Bank |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income and other financing income (loss) | 475 | 459 | 1,391 | 1,359
Provision for credit losses | 84 | 91 | 259 | 272
Total Noninterest Income | 264 | 240 | 711 | 657
Salaries and employee benefits | 143 | 141 | 425 | 424
Equipment and software expense | 6 | 5 | 15 | 14
Net occupancy expense | 6 | 7 | 20 | 20
Other expenses (benefits) | 165 | 166 | 480 | 492
Total non-interest expense | 320 | 319 | 940 | 950
Income before income taxes | 335 | 289 | 903 | 794
Income tax expense (benefit) | 84 | 73 | 226 | 199
Net income (loss) | 251 | 216 | 677 | 595
Average assets | 70,567 | 69,364 | 69,879 | 69,081
Corporate Bank | Service charges on deposit accounts |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 61 | 58 | 185 | 167
Corporate Bank | Card and ATM fees |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 10 | 11 | 32 | 32
Corporate Bank | Investment management and trust fee income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Corporate Bank | Capital markets income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 104 | 92 | 265 | 249
Corporate Bank | Mortgage income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Corporate Bank | Investment Services Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Corporate Bank | Commercial Credit Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 28 | 28 | 84 | 83
Corporate Bank | Bank-owned life insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Corporate Bank | Securities gains, net [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Corporate Bank | Market value adjustments on employee benefit assets - other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Corporate Bank | Other miscellaneous income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 61 | 51 | 145 | 126
Consumer Bank |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income and other financing income (loss) | 738 | 718 | 2,189 | 2,107
Provision for credit losses | 69 | 67 | 203 | 202
Total Noninterest Income | 268 | 264 | 802 | 780
Salaries and employee benefits | 184 | 178 | 543 | 539
Equipment and software expense | 25 | 25 | 73 | 76
Net occupancy expense | 56 | 51 | 164 | 159
Other expenses (benefits) | 385 | 349 | 1,093 | 1,026
Total non-interest expense | 650 | 603 | 1,873 | 1,800
Income before income taxes | 287 | 312 | 915 | 885
Income tax expense (benefit) | 72 | 78 | 229 | 221
Net income (loss) | 215 | 234 | 686 | 664
Average assets | 37,360 | 37,882 | 37,502 | 37,974
Consumer Bank | Service charges on deposit accounts |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 99 | 100 | 285 | 287
Consumer Bank | Card and ATM fees |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 112 | 108 | 331 | 322
Consumer Bank | Investment management and trust fee income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Consumer Bank | Capital markets income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 1 | 1
Consumer Bank | Mortgage income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 38 | 36 | 126 | 111
Consumer Bank | Investment Services Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Consumer Bank | Commercial Credit Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Consumer Bank | Bank-owned life insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Consumer Bank | Securities gains, net [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Consumer Bank | Market value adjustments on employee benefit assets - other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Consumer Bank | Other miscellaneous income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 19 | 20 | 59 | 59
Wealth Management |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income and other financing income (loss) | 44 | 41 | 130 | 122
Provision for credit losses | 2 | 2 | 5 | 6
Total Noninterest Income | 141 | 130 | 407 | 374
Salaries and employee benefits | 70 | 66 | 206 | 194
Equipment and software expense | 0 | 0 | 2 | 2
Net occupancy expense | 3 | 3 | 9 | 9
Other expenses (benefits) | 49 | 45 | 143 | 128
Total non-interest expense | 122 | 114 | 360 | 333
Income before income taxes | 61 | 55 | 172 | 157
Income tax expense (benefit) | 15 | 13 | 43 | 40
Net income (loss) | 46 | 42 | 129 | 117
Average assets | 2,130 | 2,088 | 2,125 | 2,059
Wealth Management | Service charges on deposit accounts |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 2 | 2
Wealth Management | Card and ATM fees |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 1
Wealth Management | Investment management and trust fee income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 91 | 85 | 267 | 249
Wealth Management | Capital markets income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 1 | 1
Wealth Management | Mortgage income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Wealth Management | Investment Services Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 48 | 43 | 134 | 120
Wealth Management | Commercial Credit Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Wealth Management | Bank-owned life insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Wealth Management | Securities gains, net [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Wealth Management | Market value adjustments on employee benefit assets - other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Wealth Management | Other miscellaneous income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 2 | 2 | 3 | 1
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income and other financing income (loss) | 0 | 0 | 0 | 0
Provision for credit losses | (50) | (47) | (112) | (113)
Total Noninterest Income | (14) | (62) | (25) | (131)
Salaries and employee benefits | 274 | 260 | 780 | 755
Equipment and software expense | 75 | 71 | 219 | 210
Net occupancy expense | 7 | 8 | 21 | 23
Other expenses (benefits) | (345) | (306) | (978) | (867)
Total non-interest expense | 11 | 33 | 42 | 121
Income before income taxes | 25 | (48) | 45 | (139)
Income tax expense (benefit) | (32) | (46) | (85) | (122)
Net income (loss) | 57 | (2) | 130 | (17)
Average assets | 49,032 | 45,333 | 48,482 | 43,884
Other | Service charges on deposit accounts |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 1
Other | Card and ATM fees |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | (1) | 1 | (1)
Other | Investment management and trust fee income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Other | Capital markets income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Other | Mortgage income |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Other | Investment Services Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Other | Commercial Credit Fee Income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 0 | 0 | 0 | 0
Other | Bank-owned life insurance [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 25 | 28 | 72 | 81
Other | Securities gains, net [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | (27) | (78) | (53) | (178)
Other | Market value adjustments on employee benefit assets - other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | 12 | 13 | 25 | 30
Other | Other miscellaneous income [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Noninterest Income | $ (24) | $ (24) | $ (70) | $ (64)

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