Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Details)

v3.10.0.1
Financial Instruments (Details) - Recurring - Level 2 market data - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Financial Instruments    
Fair value of senior notes $ 3,500 $ 3,500
Antero Midstream Partners LP    
Financial Instruments    
Fair value of senior notes $ 655 $ 670