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Cover - USD ($)
 12 Months Ended
Dec. 31, 2023
Feb. 05, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-12307    
Entity Registrant Name ZIONS BANCORPORATION, NATIONAL ASSOCIATION    
Entity Incorporation, State or Country Code X1    
Entity Tax Identification Number 87-0189025    
Entity Address, Address Line One One South Main    
Entity Address, City or Town Salt Lake City,    
Entity Address, State or Province UT    
Entity Address, Postal Zip Code 84133-1109    
City Area Code 801    
Local Phone Number 844-8208    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 3,892,923,377
Entity Common Stock, Shares Outstanding   148,155,311  
Documents Incorporated by Reference
Documents Incorporated by Reference:
Part III: Items 10-14 — Proxy Statement for the 2024 Annual Meeting of Shareholders to be held April 26, 2024.
    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000109380    
Document Financial Statement Error Correction [Flag] false    
Common stock shares (in thousands)      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $0.001    
Trading Symbol ZION    
Security Exchange Name NASDAQ    
Series A Floating-Rate Non-Cumulative Perpetual Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Series A Floating-Rate Non-Cumulative Perpetual Preferred Stock    
Trading Symbol ZIONP    
Security Exchange Name NASDAQ    
Series G Fixed/Floating-Rate Non-Cumulative Perpetual Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Series G Fixed/Floating-Rate Non-Cumulative Perpetual Preferred Stock    
Trading Symbol ZIONO    
Security Exchange Name NASDAQ    
6.95% Fixed-to-Floating Rate Subordinated Notes due September 15, 2028      
Document Information [Line Items]      
Title of 12(b) Security 6.95% Fixed-to-Floating Rate Subordinated Notes due September 15, 2028    
Trading Symbol ZIONL    
Security Exchange Name NASDAQ