Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v3.21.2
Long-Term Debt (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Nov. 02, 2021
USD ($)
Oct. 26, 2021
USD ($)
Jun. 01, 2021
USD ($)
May 13, 2021
USD ($)
$ / shares
shares
Jan. 26, 2021
USD ($)
Jan. 12, 2021
USD ($)
$ / shares
shares
Jan. 04, 2021
USD ($)
Aug. 21, 2020
USD ($)
D
shares
Dec. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Oct. 18, 2021
USD ($)
Jul. 01, 2021
USD ($)
Jun. 30, 2021
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Sep. 02, 2020
USD ($)
Dec. 21, 2016
USD ($)
Mar. 17, 2015
USD ($)
Sep. 18, 2014
USD ($)
May 06, 2014
USD ($)
Long-Term Debt                                              
Total principal                   $ 2,394,070   $ 2,394,070           $ 3,129,198          
Unamortized premium (discount), net                   (28,780)   (28,780)           (111,886)          
Unamortized debt issuance costs                   (24,257)   (24,257)           (15,719)          
Long-term debt                   2,341,033   2,341,033           3,001,593          
Issuance of convertible notes                         $ 287,500                    
Payments of deferred financing costs                       22,814 8,907                    
Loss on convertible note equitization                       50,777                      
Gain (loss) on extinguishment of debt repurchased                   (16,567) $ 55,633 (82,836) $ 175,365                    
Debt Repurchase Program                                              
Long-Term Debt                                              
Weighted average percentage discount on repurchases of debt                     13.00%   17.00%                    
Principal amount of debt repurchased                     $ 461,000   $ 1,100,000                    
Gain (loss) on extinguishment of debt repurchased                     56,000   175,000                    
Prior Credit Facility                                              
Long-Term Debt                                              
Credit facility                   97,500   97,500           $ 1,017,000          
Current borrowing base                   2,850,000   2,850,000                      
Lender commitments                   $ 2,640,000   $ 2,640,000                      
Weighted average interest rate (as a percent)                   3.40%   3.40%           3.26%          
Outstanding letters of credit                   $ 742,000   $ 742,000           $ 730,000          
Prior Credit Facility | Minimum                                              
Long-Term Debt                                              
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)                       0.30%                      
Prior Credit Facility | Maximum                                              
Long-Term Debt                                              
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)                       0.375%                      
New Credit Facility | Subsequent event                                              
Long-Term Debt                                              
Current borrowing base   $ 3,500,000                                          
Lender commitments   $ 1,500,000                                          
New Credit Facility | Subsequent event | Minimum                                              
Long-Term Debt                                              
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)   0.375%                                          
New Credit Facility | Subsequent event | Maximum                                              
Long-Term Debt                                              
Commitment fees on the unused portion during any period that is not an Investment Grade Period (as a percent)   0.50%                                          
5.125 senior notes due 2022                                              
Long-Term Debt                                              
Senior notes                                   $ 660,516       $ 500,000 $ 600,000
Interest rate (as a percent)                                   5.125%         5.125%
Issue price as percentage of par value                                           100.50% 100.00%
5.125 senior notes due 2022 | Debt Repurchase Program                                              
Long-Term Debt                                              
Notional amount debt repurchased                                 $ 661,000            
5.625% senior notes due 2023                                              
Long-Term Debt                                              
Senior notes                                   $ 574,182     $ 750,000    
Interest rate (as a percent)                                   5.625%     5.625%    
Issue price as percentage of par value                                         100.00%    
5.625% senior notes due 2023 | Debt Repurchase Program                                              
Long-Term Debt                                              
Notional amount debt repurchased                               $ 574,000              
5.00% senior notes due 2025                                              
Long-Term Debt                                              
Senior notes                   $ 590,000   $ 590,000           $ 590,000   $ 600,000      
Interest rate (as a percent)                   5.00%   5.00%           5.00%   5.00%      
Issue price as percentage of par value                                       100.00%      
Redemption price                       102.50%                      
Redemption price at which notes may be required to be repurchased in event of change of control                       101.00%                      
Notional amount debt repurchased                                   $ 10,000          
5.00% senior notes due 2025 | On or after March 1, 2023                                              
Long-Term Debt                                              
Redemption price                       100.00%                      
8.375% Senior Notes Due 2026                                              
Long-Term Debt                                              
Senior notes             $ 500,000     $ 325,000   $ 325,000                      
Interest rate (as a percent)             8.375%     8.375%   8.375%                      
Issue price as percentage of par value             100.00%                                
Redemption price of the debt instrument in the event of change of control (as a percent)             101.00%                                
8.375% Senior Notes Due 2026 | Debt Repurchase Program                                              
Long-Term Debt                                              
Notional amount debt repurchased                   $ 175,000   $ 175,000     $ 175,000                
Gain (loss) on extinguishment of debt repurchased                   $ (17,000)                          
Percentage of redeemed amount                   108.375%                          
8.375% Senior Notes Due 2026 | On or after January 15, 2024                                              
Long-Term Debt                                              
Redemption price             104.188%                                
8.375% Senior Notes Due 2026 | On or after January 15, 2026                                              
Long-Term Debt                                              
Redemption price             100.00%                                
8.375% Senior Notes Due 2026 | Prior to January 15, 2024                                              
Long-Term Debt                                              
Redemption price             100.00%                                
7.625% Senior Notes Due 2029                                              
Long-Term Debt                                              
Senior notes         $ 700,000         $ 700,000   $ 700,000                      
Interest rate (as a percent)         7.625%         7.625%   7.625%                      
Issue price as percentage of par value         100.00%                                    
Redemption price of the debt instrument in the event of change of control (as a percent)         101.00%                                    
7.625% Senior Notes Due 2029 | On or after February 1, 2024                                              
Long-Term Debt                                              
Redemption price         103.813%                                    
7.625% Senior Notes Due 2029 | On or after February 1, 2027                                              
Long-Term Debt                                              
Redemption price         100.00%                                    
7.625% Senior Notes Due 2029 | On or before February 1, 2024                                              
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)         107.625%                                    
7.625% Senior Notes Due 2029 | Prior to February 1, 2024                                              
Long-Term Debt                                              
Redemption price         100.00%                                    
7.625% Senior Notes Due 2029 | Subsequent event                                              
Long-Term Debt                                              
Notional amount debt repurchased                           $ 116,000                  
7.625% Senior Notes Due 2029 | Subsequent event | Forecast                                              
Long-Term Debt                                              
Total principal $ 584,000                                            
Notional amount debt repurchased $ 116,000                                            
Percentage of redeemed amount 107.625%                                            
Premium on amount received                 $ 9,000                            
5.375% senior notes due 2030                                              
Long-Term Debt                                              
Senior notes     $ 600,000             $ 600,000   $ 600,000                      
Interest rate (as a percent)     5.375%             5.375%   5.375%                      
Issue price as percentage of par value     100.00%                                        
Redemption price of the debt instrument in the event of change of control (as a percent)     101.00%                                        
5.375% senior notes due 2030 | On or after March 1, 2025                                              
Long-Term Debt                                              
Redemption price     102.688%                                        
5.375% senior notes due 2030 | On or after March 1, 2028                                              
Long-Term Debt                                              
Redemption price     100.00%                                        
5.375% senior notes due 2030 | On or Before March 1, 2025                                              
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)     105.375%                                        
5.375% senior notes due 2030 | Prior to March 1, 2025                                              
Long-Term Debt                                              
Redemption price     100.00%                                        
4.25% convertible senior notes due 2026                                              
Long-Term Debt                                              
Convertible senior notes               $ 250,000   $ 81,570   $ 81,570           287,500 $ 37,500        
Unamortized premium (discount), net               $ (116,000)   (28,780)   (28,780)           (112,265)          
Unamortized debt issuance costs                   (1,665)   (1,665)           (5,852)          
Long-term debt                   $ 51,125   $ 51,125           $ 169,383          
Interest rate (as a percent)               4.25%   4.25%   4.25%           4.25%          
Issuance of convertible notes               $ 278,500                              
Payments of deferred financing costs               $ 9,000                              
Equity component                   $ 32,799   $ 32,799           $ 115,601          
Conversion rate in shares of Antero Resources' common stock per $1,000 principal amount | shares               230.2026                              
If-converted value                   353,000   353,000                      
If-converted value above principal amount                   $ 272,000   $ 272,000                      
Effective interest rate (as a percent)               15.10%   15.10%   15.10%                      
Deferred taxes                   $ 8,000   $ 8,000           28,000          
Debt issuance cost                   1,000   1,000           $ 3,000          
Interest expenses                   $ 1,500 $ 2,300 8,700 $ 2,300                    
Amount of debt converted                       206,000                      
4.25% convertible senior notes due 2026 | January Share Offering                                              
Long-Term Debt                                              
Conversion rate in shares of Antero Resources' common stock per $1,000 principal amount | shares           275.3525                                  
Amount of debt converted           $ 150,000                                  
Loss on convertible note equitization                       39,000                      
Gain (loss) on extinguishment of debt repurchased                       (41,000)                      
Line of credit proceeds used to repurchase convertible notes           $ 63,000                                  
Number of shares of common stock issued (in shares) | shares           31,400,000                                  
Share price | $ / shares           $ 6.35                                  
4.25% convertible senior notes due 2026 | May Share Offering                                              
Long-Term Debt                                              
Conversion rate in shares of Antero Resources' common stock per $1,000 principal amount | shares       245.2802                                      
Amount of debt converted       $ 56,000                                      
Loss on convertible note equitization                       12,000                      
Gain (loss) on extinguishment of debt repurchased                       $ (21,000)                      
Line of credit proceeds used to repurchase convertible notes       $ 26,000                                      
Number of shares of common stock issued (in shares) | shares       11,600,000                                      
Share price | $ / shares       $ 11.01                                      
4.25% convertible senior notes due 2026 | Convertible debt threshold minimum percentage                                              
Long-Term Debt                                              
Stock price trigger               98.00%                              
Trading days | D               5                              
Consecutive trading days | D               10                              
4.25% convertible senior notes due 2026 | Convertible debt threshold maximum percentage                                              
Long-Term Debt                                              
Stock price trigger               130.00%                              
Trading days | D               20                              
Consecutive trading days | D               30                              
4.25% convertible senior notes due 2026 | Fair value                                              
Long-Term Debt                                              
Fair value               $ 172,000