XML 18 R1.htm IDEA: XBRL DOCUMENT v3.25.0.1
Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Jan. 31, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-37774    
Entity Registrant Name AdvanSix Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 81-2525089    
Entity Address, Address Line One 300 Kimball Drive    
Entity Address, Address Line Two Suite 101    
Entity Address, City or Town Parsippany    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07054    
City Area Code 973    
Local Phone Number 526-1800    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol ASIX    
Security Exchange Name NYSE    
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    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 593
Entity Common Stock, Shares Outstanding   26,744,101  
Documents Incorporated by Reference
Part III: Proxy Statement for Annual Meeting of Stockholders to be held June 18, 2025.
    
Amendment Flag false    
Entity Central Index Key 0001673985    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY