Amount of accrual for cash awards granted.

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The number of shares issued for each share of conversion.

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The number of common stock issued after conversion of convertible units.

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Period over which cost not yet recognized is expected to be recognized for award under cash awards arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of commitment made to pay deferred cash remuneration.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Equity Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended
	Mar. 12, 2019	Jan. 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Additional disclosures
Expense recognized			$ 2,697	$ 21,543		$ 6,035	$ 32,966
Antero Midstream Partners
Additional disclosures
Expense recognized			1,300		$ 2,800	3,200
Antero Resources
Additional disclosures
Unamortized expense			15,000			15,000
Midstream LTIP
Additional disclosures
Unamortized expense			$ 15,000			$ 15,000
Weighted average period for recognizing unrecognized stock-based compensation expense						2 years 1 month 6 days
2017 AMGP LTIP
Additional disclosures
Expense recognized				0			200
AM LTIP
Number of units
Total awarded and unvested at the beginning of the period (in shares)		1,275,990				1,275,990
Granted (in shares)						985,269
Vested (in shares)						(454,933)
Forfeited (in shares)						(47,367)
Total awarded and unvested at the end of the period (in shares)			1,758,959			1,758,959
Weighted average grant date fair value
Total awarded and unvested at the beginning of the period (in dollars per unit)		$ 14.38				$ 14.38
Granted (in dollars per unit)						7.23
Vested (in dollars per unit)						13.63
Forfeited (in dollars per unit)						14.43
Total awarded and unvested at the end of the period (in dollars per unit)			$ 10.45			$ 10.45
Aggregate intrinsic value
Total awarded and unvested at the beginning of the period		$ 9,685				$ 9,685
Total awarded and unvested at the end of the period			$ 8,971			8,971
Additional disclosures
Expense recognized			$ 1,300			$ 2,700
Number of stock-based compensation awards authorized	15,398,901
Number of shares available for future grant under the Plan			12,840,630			12,840,630
Cash awards granted		$ 2,200
Vesting period for cash awards		3 years
Cash awards accrued in other liabilities			$ 800			$ 800
Series B Unit, Vested and Unvested
Additional disclosures
Shares exchange ratio	176.0041
Exchanged B Units
Additional disclosures
Expense recognized				18,000			29,000
Shares exchanged	17,353,999
Common stock issued in exchange	98,600
ROIC PSUs
Additional disclosures
Expense recognized			78	$ 163		156	$ 163
Unamortized expense			$ 600			$ 600
Weighted average period for recognizing unrecognized stock-based compensation expense						1 year 9 months 18 days