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Antero Midstream Partners LP (Details)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 11, 2017
USD ($)
shares
Feb. 10, 2017
USD ($)
shares
Feb. 06, 2017
Sep. 23, 2015
USD ($)
bbl
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
shares
Sep. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
May 26, 2016
Antero Midstream Partners LP                    
Investments in unconsolidated affiliates         $ 287,842   $ 287,842   $ 68,299  
Equity in earnings of unconsolidated affiliate         7,033 $ 1,543 12,887 $ 2,027    
Issuance of common stock               837,414    
Consideration:                    
Amount borrowed on bank credit facility             (198,000) (552,000)    
Equity Transactions                    
Proceeds From Sale Of Interest In Partnership Unit             $ 311,100 $ 178,000    
Antero Midstream Partners LP                    
Antero Midstream Partners LP                    
Number of additional shares of common stock issued (in shares) | shares   6,900,000                
Issuance of common stock   $ 223,000                
Antero Resources ownership in Antero Midstream             53.00%   60.90%  
Antero Midstream Partners LP | Contingent Consideration Period One                    
Consideration:                    
Contingent consideration       $ 125,000            
Threshold number of barrels of water to trigger contingent consideration payment | bbl       176,295,000            
Antero Midstream Partners LP | Contingent Consideration Period Two                    
Consideration:                    
Contingent consideration       $ 125,000            
Threshold number of barrels of water to trigger contingent consideration payment | bbl       219,200,000            
Antero Midstream Partners LP | At the Market Program                    
Equity Transactions                    
Units sold under At the Market program (in units) | shares             777,262      
Proceeds from issuance of common units             $ 25,500      
Remaining capacity under equity distribution agreement         157,300   157,300      
Antero Midstream Partners LP | Maximum | At the Market Program                    
Equity Transactions                    
Aggregate dollar amount of common units available for issuance and sale under equity distribution agreement             $ 250,000      
Antero Midstream Partners LP                    
Antero Midstream Partners LP                    
Antero Resources ownership in Antero Midstream             53.00%      
Equity Transactions                    
Number of Antero Midstream common units sold by Antero Resources (in units) | shares 10,000,000                  
Proceeds From Sale Of Interest In Partnership Unit $ 311,000                  
Appalachia joint venture                    
Antero Midstream Partners LP                    
Ownership percentage     50.00%              
Appalachia joint venture | Antero Midstream Partners LP                    
Antero Midstream Partners LP                    
Investments in unconsolidated affiliates         220,300   $ 220,300      
Equity in earnings of unconsolidated affiliate             5,200      
Percentage of interest held by joint venture in third party fractionator in Ohio     33.33%              
Appalachia joint venture | MarkWest | Antero Midstream Partners LP                    
Antero Midstream Partners LP                    
Ownership percentage     50.00%              
Regional gathering pipeline | Antero Midstream Partners LP                    
Antero Midstream Partners LP                    
Ownership percentage                   15.00%
Investments in unconsolidated affiliates         $ 67,500   67,500      
Equity in earnings of unconsolidated affiliate             $ 7,700