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OPERATING SEGMENT INFORMATION (Schedule Of Segment Information) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | $ 648 | $ 597 | $ 1,272 | $ 1,183
Provision for credit losses | (1) | 5 | 17 | 18
Net interest income after provision for credit losses | 649 | 592 | 1,255 | 1,165
Noninterest income | 190 | 179 | 361 | 335
Salaries and employee benefits | 336 | 318 | 678 | 649
Technology, telecom, and information processing | 65 | 66 | 135 | 128
Occupancy and equipment, net | 40 | 40 | 81 | 79
Other direct expenses | 86 | 85 | 171 | 179
Indirect/allocated expenses | 0 | 0 | 0 | 0
Total noninterest expense | 527 | 509 | 1,065 | 1,035
Income (loss) before income taxes | 312 | 262 | 551 | 465
Total average loans | 60,460 | 58,291 | 60,050 | 58,100
Total average deposits | 74,266 | 74,228 | 74,590 | 73,793
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | (3) | 3 | (6) | 12
Provision for credit losses | 0 | (2) | 1 | (3)
Net interest income after provision for credit losses | (3) | 5 | (7) | 15
Noninterest income | 30 | 25 | 51 | 42
Salaries and employee benefits | 203 | 190 | 404 | 383
Technology, telecom, and information processing | 55 | 56 | 114 | 108
Occupancy and equipment, net | 8 | 8 | 17 | 17
Other direct expenses | 34 | 26 | 61 | 51
Indirect/allocated expenses | (272) | (281) | (533) | (523)
Total noninterest expense | 28 | (1) | 63 | 36
Income (loss) before income taxes | (1) | 31 | (19) | 21
Total average loans | 916 | 941 | 921 | 962
Total average deposits | 5,149 | 5,452 | 5,366 | 5,083
Zions Bank | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 182 | 170 | 358 | 332
Provision for credit losses | 6 | (7) | 12 | (18)
Net interest income after provision for credit losses | 176 | 177 | 346 | 350
Noninterest income | 49 | 47 | 91 | 90
Salaries and employee benefits | 34 | 34 | 70 | 70
Technology, telecom, and information processing | 4 | 4 | 8 | 7
Occupancy and equipment, net | 7 | 7 | 14 | 13
Other direct expenses | 16 | 20 | 33 | 40
Indirect/allocated expenses | 81 | 86 | 160 | 161
Total noninterest expense | 142 | 151 | 285 | 291
Income (loss) before income taxes | 83 | 73 | 152 | 149
Total average loans | 15,008 | 14,893 | 14,922 | 14,808
Total average deposits | 20,827 | 20,906 | 21,018 | 20,820
CB&T | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 161 | 148 | 312 | 293
Provision for credit losses | (18) | (5) | (8) | 17
Net interest income after provision for credit losses | 179 | 153 | 320 | 276
Noninterest income | 32 | 30 | 60 | 56
Salaries and employee benefits | 33 | 31 | 67 | 64
Technology, telecom, and information processing | 1 | 1 | 2 | 2
Occupancy and equipment, net | 8 | 8 | 17 | 16
Other direct expenses | 11 | 9 | 21 | 23
Indirect/allocated expenses | 56 | 54 | 106 | 99
Total noninterest expense | 109 | 103 | 213 | 204
Income (loss) before income taxes | 102 | 80 | 167 | 128
Total average loans | 15,176 | 14,127 | 14,927 | 14,146
Total average deposits | 15,210 | 14,539 | 14,917 | 14,473
Amegy | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 137 | 116 | 269 | 227
Provision for credit losses | 10 | 14 | 13 | 18
Net interest income after provision for credit losses | 127 | 102 | 256 | 209
Noninterest income | 43 | 42 | 92 | 83
Salaries and employee benefits | 29 | 26 | 59 | 56
Technology, telecom, and information processing | 2 | 2 | 4 | 4
Occupancy and equipment, net | 8 | 8 | 16 | 16
Other direct expenses | 11 | 14 | 25 | 29
Indirect/allocated expenses | 64 | 66 | 128 | 124
Total noninterest expense | 114 | 116 | 232 | 229
Income (loss) before income taxes | 56 | 28 | 116 | 63
Total average loans | 14,158 | 13,345 | 14,056 | 13,230
Total average deposits | 14,573 | 14,612 | 14,692 | 14,742
NBAZ | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 64 | 61 | 128 | 122
Provision for credit losses | (5) | (1) | (13) | 5
Net interest income after provision for credit losses | 69 | 62 | 141 | 117
Noninterest income | 10 | 10 | 19 | 20
Salaries and employee benefits | 13 | 13 | 27 | 27
Technology, telecom, and information processing | 1 | 1 | 2 | 2
Occupancy and equipment, net | 2 | 2 | 5 | 5
Other direct expenses | 6 | 7 | 14 | 14
Indirect/allocated expenses | 26 | 28 | 51 | 51
Total noninterest expense | 48 | 51 | 99 | 99
Income (loss) before income taxes | 31 | 21 | 61 | 38
Total average loans | 5,575 | 5,595 | 5,638 | 5,623
Total average deposits | 6,863 | 6,929 | 6,905 | 6,894
NSB | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 53 | 50 | 106 | 98
Provision for credit losses | 4 | 7 | 4 | 2
Net interest income after provision for credit losses | 49 | 43 | 102 | 96
Noninterest income | 13 | 16 | 25 | 28
Salaries and employee benefits | 11 | 11 | 23 | 23
Technology, telecom, and information processing | 1 | 1 | 3 | 3
Occupancy and equipment, net | 3 | 3 | 5 | 5
Other direct expenses | 4 | 5 | 9 | 11
Indirect/allocated expenses | 24 | 25 | 47 | 47
Total noninterest expense | 43 | 45 | 87 | 89
Income (loss) before income taxes | 19 | 14 | 40 | 35
Total average loans | 3,737 | 3,547 | 3,698 | 3,527
Total average deposits | 7,132 | 7,207 | 7,149 | 7,203
Vectra | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 36 | 35 | 71 | 71
Provision for credit losses | 0 | 0 | 9 | (6)
Net interest income after provision for credit losses | 36 | 35 | 62 | 77
Noninterest income | 11 | 7 | 19 | 13
Salaries and employee benefits | 10 | 10 | 21 | 20
Technology, telecom, and information processing | 1 | 1 | 1 | 1
Occupancy and equipment, net | 3 | 3 | 6 | 6
Other direct expenses | 3 | 3 | 6 | 8
Indirect/allocated expenses | 17 | 19 | 34 | 35
Total noninterest expense | 34 | 36 | 68 | 70
Income (loss) before income taxes | 13 | 6 | 13 | 20
Total average loans | 3,871 | 4,088 | 3,896 | 4,063
Total average deposits | 3,366 | 3,475 | 3,403 | 3,463
TCBW | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 18 | 14 | 34 | 28
Provision for credit losses | 2 | (1) | (1) | 3
Net interest income after provision for credit losses | 16 | 15 | 35 | 25
Noninterest income | 2 | 2 | 4 | 3
Salaries and employee benefits | 3 | 3 | 7 | 6
Technology, telecom, and information processing | 0 | 0 | 1 | 1
Occupancy and equipment, net | 1 | 1 | 1 | 1
Other direct expenses | 1 | 1 | 2 | 3
Indirect/allocated expenses | 4 | 3 | 7 | 6
Total noninterest expense | 9 | 8 | 18 | 17
Income (loss) before income taxes | 9 | 9 | 21 | 11
Total average loans | 2,019 | 1,755 | 1,992 | 1,741
Total average deposits | $ 1,146 | $ 1,108 | $ 1,140 | $ 1,115

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