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OPERATING SEGMENT INFORMATION (Schedule Of Segment Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | $ 672 | $ 620 | $ 1,944 | $ 1,803
Provision for credit losses | 49 | 13 | 66 | 31
Net interest income after provision for credit losses | 623 | 607 | 1,878 | 1,772
Noninterest income | 189 | 172 | 550 | 507
Salaries and employee benefits | 337 | 317 | 1,015 | 966
Technology, telecom, and information processing | 70 | 66 | 205 | 194
Occupancy and equipment, net | 42 | 40 | 123 | 119
Other direct expenses | 78 | 79 | 249 | 258
Indirect/allocated expenses | 0 | 0 | 0 | 0
Total noninterest expense | 527 | 502 | 1,592 | 1,537
Income (loss) before income taxes | 285 | 277 | 836 | 742
Total average loans | 60,786 | 58,665 | 60,298 | 58,289
Total average deposits | 74,303 | 75,029 | 74,494 | 74,208
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | (3) | (6) | (10) | 5
Provision for credit losses | 1 | 0 | 1 | (2)
Net interest income after provision for credit losses | (4) | (6) | (11) | 7
Noninterest income | 24 | 19 | 75 | 59
Salaries and employee benefits | 203 | 188 | 608 | 570
Technology, telecom, and information processing | 59 | 56 | 174 | 163
Occupancy and equipment, net | 8 | 8 | 26 | 24
Other direct expenses | 28 | 25 | 87 | 77
Indirect/allocated expenses | (275) | (260) | (809) | (786)
Total noninterest expense | 23 | 17 | 86 | 48
Income (loss) before income taxes | (3) | (4) | (22) | 18
Total average loans | 866 | 951 | 903 | 957
Total average deposits | 4,544 | 5,628 | 5,090 | 5,267
Zions Bank | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 191 | 174 | 549 | 506
Provision for credit losses | 2 | 11 | 15 | (7)
Net interest income after provision for credit losses | 189 | 163 | 534 | 513
Noninterest income | 49 | 46 | 141 | 136
Salaries and employee benefits | 35 | 34 | 105 | 105
Technology, telecom, and information processing | 3 | 4 | 11 | 11
Occupancy and equipment, net | 7 | 6 | 20 | 20
Other direct expenses | 12 | 16 | 46 | 55
Indirect/allocated expenses | 83 | 80 | 244 | 245
Total noninterest expense | 140 | 140 | 426 | 436
Income (loss) before income taxes | 98 | 69 | 249 | 213
Total average loans | 15,230 | 14,762 | 15,026 | 14,792
Total average deposits | 21,108 | 21,386 | 21,048 | 21,010
CB&T | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 168 | 155 | 481 | 448
Provision for credit losses | 55 | 0 | 47 | 17
Net interest income after provision for credit losses | 113 | 155 | 434 | 431
Noninterest income | 31 | 31 | 91 | 87
Salaries and employee benefits | 34 | 31 | 101 | 95
Technology, telecom, and information processing | 1 | 1 | 4 | 4
Occupancy and equipment, net | 9 | 8 | 25 | 24
Other direct expenses | 10 | 9 | 31 | 32
Indirect/allocated expenses | 56 | 50 | 162 | 149
Total noninterest expense | 110 | 99 | 323 | 304
Income (loss) before income taxes | 34 | 87 | 202 | 214
Total average loans | 15,255 | 14,315 | 15,037 | 14,203
Total average deposits | 15,656 | 14,643 | 15,166 | 14,530
Amegy | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 143 | 128 | 412 | 355
Provision for credit losses | 2 | 4 | 15 | 22
Net interest income after provision for credit losses | 141 | 124 | 397 | 333
Noninterest income | 49 | 44 | 140 | 128
Salaries and employee benefits | 28 | 27 | 87 | 82
Technology, telecom, and information processing | 2 | 2 | 6 | 6
Occupancy and equipment, net | 8 | 8 | 25 | 24
Other direct expenses | 12 | 12 | 37 | 42
Indirect/allocated expenses | 66 | 62 | 193 | 186
Total noninterest expense | 116 | 111 | 348 | 340
Income (loss) before income taxes | 74 | 57 | 189 | 121
Total average loans | 14,317 | 13,531 | 14,144 | 13,331
Total average deposits | 14,559 | 14,633 | 14,647 | 14,705
NBAZ | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 66 | 63 | 194 | 185
Provision for credit losses | (3) | 7 | (15) | 11
Net interest income after provision for credit losses | 69 | 56 | 209 | 174
Noninterest income | 12 | 11 | 31 | 31
Salaries and employee benefits | 13 | 13 | 40 | 40
Technology, telecom, and information processing | 1 | 1 | 3 | 3
Occupancy and equipment, net | 3 | 3 | 8 | 8
Other direct expenses | 6 | 7 | 20 | 21
Indirect/allocated expenses | 26 | 25 | 77 | 76
Total noninterest expense | 49 | 49 | 148 | 148
Income (loss) before income taxes | 32 | 18 | 92 | 57
Total average loans | 5,545 | 5,647 | 5,606 | 5,631
Total average deposits | 6,863 | 6,904 | 6,891 | 6,897
NSB | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 54 | 52 | 160 | 150
Provision for credit losses | (6) | (14) | (2) | (12)
Net interest income after provision for credit losses | 60 | 66 | 162 | 162
Noninterest income | 13 | 12 | 38 | 40
Salaries and employee benefits | 11 | 11 | 34 | 35
Technology, telecom, and information processing | 2 | 1 | 4 | 4
Occupancy and equipment, net | 3 | 3 | 8 | 8
Other direct expenses | 5 | 6 | 14 | 16
Indirect/allocated expenses | 24 | 23 | 71 | 70
Total noninterest expense | 45 | 44 | 131 | 133
Income (loss) before income taxes | 28 | 34 | 69 | 69
Total average loans | 3,736 | 3,520 | 3,711 | 3,525
Total average deposits | 7,038 | 7,156 | 7,112 | 7,187
Vectra | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 35 | 38 | 106 | 109
Provision for credit losses | (6) | 2 | 3 | (4)
Net interest income after provision for credit losses | 41 | 36 | 103 | 113
Noninterest income | 9 | 7 | 28 | 20
Salaries and employee benefits | 10 | 10 | 30 | 30
Technology, telecom, and information processing | 1 | 1 | 2 | 2
Occupancy and equipment, net | 3 | 3 | 9 | 9
Other direct expenses | 4 | 3 | 10 | 11
Indirect/allocated expenses | 16 | 17 | 51 | 52
Total noninterest expense | 34 | 34 | 102 | 104
Income (loss) before income taxes | 16 | 9 | 29 | 29
Total average loans | 3,825 | 4,106 | 3,872 | 4,078
Total average deposits | 3,396 | 3,531 | 3,400 | 3,486
TCBW | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 18 | 16 | 52 | 45
Provision for credit losses | 4 | 3 | 2 | 6
Net interest income after provision for credit losses | 14 | 13 | 50 | 39
Noninterest income | 2 | 2 | 6 | 6
Salaries and employee benefits | 3 | 3 | 10 | 9
Technology, telecom, and information processing | 1 | 0 | 1 | 1
Occupancy and equipment, net | 1 | 1 | 2 | 2
Other direct expenses | 1 | 1 | 4 | 4
Indirect/allocated expenses | 4 | 3 | 11 | 8
Total noninterest expense | 10 | 8 | 28 | 24
Income (loss) before income taxes | 6 | 7 | 28 | 21
Total average loans | 2,012 | 1,833 | 1,999 | 1,772
Total average deposits | $ 1,139 | $ 1,148 | $ 1,140 | $ 1,126

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