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REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | $ 133 | $ 128 | $ 396 | $ 378
Customer-related noninterest income from other sources | 30 | 33 | 89 | 88
Total customer-related noninterest income | 163 | 161 | 485 | 466
Noncustomer-related noninterest income | 26 | 11 | 65 | 41
Total noninterest income | 189 | 172 | 550 | 507
Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 47 | 46 | 138 | 135
Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 35 | 36 | 105 | 108
Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 19 | 17 | 54 | 50
Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 2 | 16 | 4
Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 13 | 13 | 40 | 40
Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 15 | 14 | 43 | 41
Other |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 9 | 8 | 27 | 24
Customer-related noninterest income from other sources | (7) | 4 | (1) | 16
Total customer-related noninterest income | 2 | 12 | 26 | 40
Noncustomer-related noninterest income | 22 | 7 | 49 | 19
Total noninterest income | 24 | 19 | 75 | 59
Other | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | (1) | 0 | 1
Other | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 2 | 1
Other | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | (1) | (1) | (1) | 1
Other | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 4 | 4
Other | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | (2) | (1) | 2 | 0
Other | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 9 | 8 | 20 | 17
Zions Bank | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 39 | 39 | 116 | 117
Customer-related noninterest income from other sources | 10 | 7 | 23 | 16
Total customer-related noninterest income | 49 | 46 | 139 | 133
Noncustomer-related noninterest income | 0 | 0 | 2 | 3
Total noninterest income | 49 | 46 | 141 | 136
Zions Bank | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 15 | 15 | 45 | 42
Zions Bank | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 12 | 12 | 37 | 38
Zions Bank | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 6 | 5 | 16 | 14
Zions Bank | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 0 | 0
Zions Bank | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 5 | 12 | 16
Zions Bank | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 6 | 7
CB&T | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 21 | 19 | 59 | 55
Customer-related noninterest income from other sources | 9 | 10 | 28 | 26
Total customer-related noninterest income | 30 | 29 | 87 | 81
Noncustomer-related noninterest income | 1 | 2 | 4 | 6
Total noninterest income | 31 | 31 | 91 | 87
CB&T | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 8 | 8 | 24 | 23
CB&T | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 5 | 13 | 14
CB&T | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 3 | 10 | 9
CB&T | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 0 | 2 | 0
CB&T | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 1 | 4 | 3
CB&T | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 6 | 6
Amegy | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 33 | 32 | 105 | 95
Customer-related noninterest income from other sources | 13 | 10 | 27 | 25
Total customer-related noninterest income | 46 | 42 | 132 | 120
Noncustomer-related noninterest income | 3 | 2 | 8 | 8
Total noninterest income | 49 | 44 | 140 | 128
Amegy | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 15 | 15 | 46 | 44
Amegy | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 8 | 8 | 22 | 23
Amegy | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 4 | 11 | 10
Amegy | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 9 | 0
Amegy | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 5 | 4 | 13 | 13
Amegy | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 4 | 5
NBAZ | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 10 | 10 | 29 | 29
Customer-related noninterest income from other sources | 2 | 1 | 3 | 2
Total customer-related noninterest income | 12 | 11 | 32 | 31
Noncustomer-related noninterest income | 0 | 0 | (1) | 0
Total noninterest income | 12 | 11 | 31 | 31
NBAZ | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 3 | 3 | 7 | 8
NBAZ | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 4 | 11 | 11
NBAZ | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 7 | 6
NBAZ | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 0 | 0
NBAZ | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 3 | 3
NBAZ | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 1 | 1
NSB | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 12 | 12 | 35 | 34
Customer-related noninterest income from other sources | 1 | 0 | 3 | 1
Total customer-related noninterest income | 13 | 12 | 38 | 35
Noncustomer-related noninterest income | 0 | 0 | 0 | 5
Total noninterest income | 13 | 12 | 38 | 40
NSB | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 3 | 3 | 9 | 10
NSB | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 4 | 4 | 12 | 12
NSB | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 3 | 3 | 8 | 7
NSB | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 0 | 0
NSB | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 5 | 4
NSB | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 1 | 1
Vectra | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 8 | 7 | 21 | 20
Customer-related noninterest income from other sources | 1 | 0 | 4 | 0
Total customer-related noninterest income | 9 | 7 | 25 | 20
Noncustomer-related noninterest income | 0 | 0 | 3 | 0
Total noninterest income | 9 | 7 | 28 | 20
Vectra | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 5 | 5
Vectra | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 2 | 2 | 7 | 8
Vectra | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 3 | 3
Vectra | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 0 | 1 | 0
Vectra | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 1 | 1
Vectra | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 4 | 3
TCBW | Operating Segments |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 4 | 4
Customer-related noninterest income from other sources | 1 | 1 | 2 | 2
Total customer-related noninterest income | 2 | 2 | 6 | 6
Noncustomer-related noninterest income | 0 | 0 | 0 | 0
Total noninterest income | 2 | 2 | 6 | 6
TCBW | Operating Segments | Commercial account fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 1 | 1 | 2 | 2
TCBW | Operating Segments | Card fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 1 | 1
TCBW | Operating Segments | Retail and business banking fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 0 | 0
TCBW | Operating Segments | Capital markets fees and income |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 0 | 0
TCBW | Operating Segments | Wealth management fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | 0 | 0 | 0 | 0
TCBW | Operating Segments | Other customer-related fees |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Total noninterest income from contracts with customers | $ 0 | $ 0 | $ 1 | $ 1

X
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