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Summary of Significant Accounting Policies - Principles of Consolidation (Details) - USD ($) $ / shares in Units, $ in Millions			36 Months Ended
	Dec. 16, 2019	Mar. 11, 2019	Dec. 31, 2019	Mar. 12, 2019	Dec. 31, 2018
Basis of Presentation
Other comprehensive income (loss)			$ 0
Common stock issued	19,377,592
Share price	$ 5.1606
Net proceeds from issuance of additional shares of common stock	$ 100
Accounts Payable
Basis of Presentation
Bank Overdrafts			7		$ 10
Revenue distributions payable
Basis of Presentation
Bank Overdrafts			$ 18		$ 28
Antero Midstream Corporation
Basis of Presentation
Ownership interest in equity method			28.70%	31.00%
Antero Midstream Partners LP
Basis of Presentation
Ownership interest		53.00%