Cover	Sep. 18, 2019
Cover [Abstract]
Document Type	8-K/A
Amendment Flag	true
Amendment Description	This Form 8 K/A amends and updates the disclosures made by Antero Midstream Corporation (the "Company") in its Current Report on Form 8-K filed by with the Securities and Exchange Commission (the "SEC") on September 19, 2019.
Document Period End Date	Sep. 18, 2019
Entity File Number	001-38075
Entity Registrant Name	ANTERO MIDSTREAM CORPORATION
Entity Central Index Key	0001623925
Entity Tax Identification Number	61-1748605
Entity Incorporation, State or Country Code	DE
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
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common Stock, par value $0.01 Per Share
Trading Symbol	AM
Security Exchange Name	NYSE
Entity Emerging Growth Company	false