v3.25.2
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