Subsidiary Guarantors - Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Current assets:
Accounts receivable, non-guarantor subsidiaries	$ 88,062	$ 46,419
Accounts receivable, related parties		125,000
Other current assets	11,934	10,731
Total current assets	521,782	922,885
Total assets	13,349,739	15,197,569	$ 16,120,288
Liabilities and Stockholders' Equity
Accounts payable, non-guarantor subsidiaries	55,173	14,498
Accounts payable, related parties	81,519	97,883
Other current liabilities	2,467	6,879
Total current liabilities	1,035,375	1,040,139
Total liabilities	7,365,858	8,226,826
Noncontrolling interests	315,754
Parent (Antero)
Current assets:
Accounts receivable, related parties		125,000
Other current assets	446,889	797,885
Total current assets	497,889	922,885
Noncurrent assets	11,813,110	14,274,684
Total assets	12,310,999	15,197,569
Liabilities and Stockholders' Equity
Accounts payable, related parties	514,705	397,333
Other current liabilities	945,647	942,256
Total current liabilities	1,460,352	1,339,589
Noncurrent liabilities	6,322,233	7,186,687
Total liabilities	7,782,585	8,526,276
Noncontrolling interests	315,754
Guarantor Subsidiaries
Current assets:
Accounts receivable, related parties	398,158	299,450
Other current assets	35,028
Total current assets	433,186	299,450
Noncurrent assets	202,452	812,129
Total assets	635,638	$ 1,111,579
Liabilities and Stockholders' Equity
Accounts payable, related parties	35,028
Total current liabilities	35,028
Total liabilities	35,028
Consolidation, Eliminations, Non-Guarantor Subsidiaries [Member]
Current assets:
Accounts receivable, non-guarantor subsidiaries	$ 51,000