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Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Feb. 18, 2020
Jun. 30, 2019
Cover page.      
Entity Registrant Name Axon Enterprise, Inc.    
Entity Central Index Key 0001069183    
Current Fiscal Year End Date --12-31    
Document Type 10-K    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-16391    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 86-0741227    
Entity Address, Address Line One 17800 North 85th Street    
Entity Address, City or Town Scottsdale    
Entity Address, State or Province AZ    
Entity Address, Postal Zip Code 85255    
City Area Code 480    
Local Phone Number 991-0797    
Title of 12(b) Security Common Stock, $0.00001 par value per share    
Trading Symbol AAXN    
Security Exchange Name NASDAQ    
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    
Entity Shell Company false    
Entity Public Float     $ 3,737
Entity Common Stock, Shares Outstanding   59,528,200  
Documents Incorporated by Reference
Parts of the registrant’s definitive proxy statement for its 2020 annual meeting of stockholders to be prepared and filed with the Securities and Exchange Commission not later than 120 days after December 31, 2019 are incorporated by reference into Part III of this Form 10-K.