Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v3.19.2
Long-Term Debt (Details) - USD ($)
$ in Thousands
6 Months Ended
Oct. 26, 2017
Jun. 30, 2019
Dec. 31, 2018
Dec. 21, 2016
Mar. 17, 2015
Sep. 18, 2014
May 06, 2014
Nov. 05, 2013
Long- term Debt                
Net unamortized premium   $ 1,095 $ 1,241          
Net unamortized debt issuance costs   (23,716) (26,700)          
Long-term debt   3,602,379 5,461,688          
Credit Facility                
Long- term Debt                
Bank credit facility long-term debt   175,000 405,000          
Current borrowing base   4,500,000            
Lender commitments   $ 2,500,000            
Time period prior to maturity date of senior notes as one option for maturity date of Credit Facility 91 days 91 days            
Outstanding balance   $ 175,000 $ 405,000          
Weighted average interest rate (as a percent)   3.69% 3.95%          
Outstanding letters of credit   $ 701,000 $ 685,000          
Credit Facility | Minimum | Not Investment Grade Period                
Long- term Debt                
Basis points added to the reference rate   0.25%            
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)   0.30%            
Credit Facility | Minimum | Investment Grade Period                
Long- term Debt                
Basis points added to the reference rate   0.125%            
Commitment fees on the unused portion during an Investment Grade period (as a percent)   0.15%            
Credit Facility | Maximum | Not Investment Grade Period                
Long- term Debt                
Basis points added to the reference rate   2.25%            
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)   0.375%            
Credit Facility | Maximum | Investment Grade Period                
Long- term Debt                
Basis points added to the reference rate   1.75%            
Commitment fees on the unused portion during an Investment Grade period (as a percent)   0.30%            
5.375% senior notes due 2021                
Long- term Debt                
Long-term notes payable   $ 1,000,000 1,000,000          
Interest rate (as a percent)               5.375%
Senior notes issued               $ 1,000,000
Issue price as percentage of par value               100.00%
Redemption price   101.344%            
Redemption price at which notes may be required to be repurchased in event of change of control   101.00%            
5.375% senior notes due 2021 | On or after November 1, 2019                
Long- term Debt                
Redemption price   100.00%            
Stand-alone revolving note                
Long- term Debt                
Maximum amount of the Credit Facility   $ 25,000            
Stand-alone revolving note | Other current liabilities                
Long- term Debt                
Outstanding balance   $ 0 5,400          
Stand-alone revolving note | Lender's Prime Rate                
Long- term Debt                
Basis spread on variable rate (as a percent)   1.00%            
5.125 senior notes due 2022                
Long- term Debt                
Long-term notes payable   $ 1,100,000 1,100,000          
Interest rate (as a percent)             5.125%  
Senior notes issued           $ 500,000 $ 600,000  
Issue price as percentage of par value           100.50% 100.00%  
Redemption price   101.281%            
Redemption price at which notes may be required to be repurchased in event of change of control   101.00%            
5.125 senior notes due 2022 | On or after June 1, 2020                
Long- term Debt                
Redemption price   100.00%            
5.625% senior notes due 2023                
Long- term Debt                
Long-term notes payable   $ 750,000 750,000          
Interest rate (as a percent)         5.625%      
Senior notes issued         $ 750,000      
Issue price as percentage of par value         100.00%      
Redemption price   102.813%            
Redemption price at which notes may be required to be repurchased in event of change of control   101.00%            
5.625% senior notes due 2023 | On Or After June 1, 2021                
Long- term Debt                
Redemption price   100.00%            
5.375% senior notes due 2024                
Long- term Debt                
Interest rate (as a percent)   5.375%            
5.00% senior notes due 2025                
Long- term Debt                
Long-term notes payable   $ 600,000 600,000 $ 600,000        
Interest rate (as a percent)       5.00%        
Issue price as percentage of par value       100.00%        
Redemption price at which notes may be required to be repurchased in event of change of control   101.00%            
5.00% senior notes due 2025 | Prior to March 1, 2020                
Long- term Debt                
Redemption price   100.00%            
5.00% senior notes due 2025 | On or before March 1, 2020                
Long- term Debt                
Percentage of the principal amount of the debt instrument which the entity may redeem with the proceeds from certain equity offerings   35.00%            
Redemption price of the debt instrument if redeemed with the proceeds of certain equity offerings (as a percent)   105.00%            
5.00% senior notes due 2025 | On or after March 1, 2020                
Long- term Debt                
Redemption price   103.75%            
5.00% senior notes due 2025 | On or after March1, 2023                
Long- term Debt                
Redemption price   100.00%            
Antero Midstream Partners LP                
Long- term Debt                
Net unamortized debt issuance costs     (7,853)          
Antero Midstream Partners LP | Midstream Credit Facility                
Long- term Debt                
Bank credit facility long-term debt     990,000          
Antero Midstream Partners LP | 5.375% senior notes due 2024                
Long- term Debt                
Long-term notes payable     $ 650,000