v3.25.4
Document and Entity Information - USD ($)
shares in Thousands, $ in Billions
 12 Months Ended
Dec. 31, 2025
Feb. 06, 2026
Jun. 30, 2025
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Securities Act File Number 001-38075    
Entity Registrant Name ANTERO MIDSTREAM CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 61-1748605    
Entity Address, Address Line One 1615 Wynkoop Street    
Entity Address, City or Town Denver,    
Entity Address, State or Province CO    
Entity Address, Postal Zip Code 80202    
City Area Code 303    
Local Phone Number 357-7310    
Title of 12(b) Security Common Stock, par value $0.01    
Trading Symbol AM    
Security Exchange Name NYSE    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   473,081  
Auditor Name KPMG LLP    
Auditor Location Denver, CO    
Auditor Firm ID 185    
Entity Central Index Key 0001623925    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Public Float     $ 6.4