TRANSACTIONS WITH PARTIES-IN-INTEREST (Details) - EBP 006 - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| EBP, Related Party and Party-in-Interest Transactions [Line Items] | |||
| Net assets available for benefits | $ 2,098,354,144 | $ 1,885,575,832 | |
| Party-in-Interest | |||
| EBP, Related Party and Party-in-Interest Transactions [Line Items] | |||
| Net assets available for benefits | 808,718,351 | 711,529,168 | |
| Zions Bancorporation, N.A. common stock | |||
| EBP, Related Party and Party-in-Interest Transactions [Line Items] | |||
| Dividends | 11,315,470 | 11,406,891 | |
| Investment acquired, excluding plan interest in master trust, cost | 50,645,341 | ||
| Investment sold, excluding plan interest in master trust, selling price | 68,422,306 | ||
| Investment acquired, excluding plan interest in master trust, cost, exchanges made by other participants | 19,765,063 | ||
| Net assets available for benefits | $ 366,899,621 | $ 357,846,882 | $ 317,121,737 |
| X | ||||||||||
- Definition Amount of increase in net asset available for benefit from dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Cost of investment, excluding plan interest in master trust, acquired by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of selling price for investment, excluding plan interest in master trust, sold by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset less liability available to pay benefit of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, aggregation of participants' individual account balances. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition EBP, Investment Acquired, Excluding Plan Interest In Master Trust, Cost, Exchanges Made By Other Participants No definition available.
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