The number of shares issued for each share of conversion.

No definition available.

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

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No definition available.

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Represents the percentage of amount of equity value in excess of threshold limit for conversion of units to common shares.

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No definition available.

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Represents the percentage of amount of quarterly distribution in excess of threshold limit.

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Intrinsic value of equity-based compensation awards granted. Excludes stock and unit options.

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No definition available.

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Estimated value relating to share-based payment award.

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No definition available.

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Floor equity value relating to share-based payment award.

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No definition available.

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Weighted average cost of capital relating to the share-based payment award.

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No definition available.

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Number of share instruments outstanding under a share-based compensation plan.

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No definition available.

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Represents the amount of threshold limit for conversion of units to common shares.

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No definition available.

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Represents the amount of threshold limit for quarterly distribution.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Maximum number of common units of ownership permitted to be issued by a limited liability company (LLC).

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No definition available.

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Number of common units of ownership outstanding of a limited liability company (LLC).

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No definition available.

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The number of shares converted 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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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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No definition available.

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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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No definition available.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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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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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Number of share instruments newly issued under a share-based compensation plan.

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- References

No definition available.

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Intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options.

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No definition available.

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Number of options vested.

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No definition available.

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Equity Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	2 Months Ended	3 Months Ended		12 Months Ended
	Mar. 12, 2019	Mar. 31, 2019	Mar. 12, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Additional disclosures
Expense recognized		$ 500		$ 11,423
Unamortized expense		55,000		55,000
Common Stock
Additional disclosures
Shares exchanged	5,782,601
Antero Resources
Additional disclosures
Unamortized expense		49,000		49,000
Midstream LTIP
Additional disclosures
Unamortized expense		$ 11,000		$ 11,000
Weighted average period for recognizing unrecognized stock-based compensation expense				2 years 3 months 18 days
Restricted unit and phantom unit awards
Number of units
Granted (in shares)				1,068,900
Total awarded and unvested at the end of the period (in shares)		1,068,900		1,068,900
Weighted average grant date fair value
Granted (in dollars per unit)			$ 14.58
Total awarded and unvested at the end of the period (in dollars per unit)		$ 14.58		$ 14.58
Aggregate intrinsic value
Granted		$ 13,476		$ 13,476
Total awarded and unvested at the end of the period		$ 14,729		14,729
Series B unit awards
Additional disclosures
Units vested						65,745
2017 AMGP LTIP
Additional disclosures
Expense recognized				200	$ 200
Shares exchange ratio	1.8926
Awards issued	0
Awards outstanding	0
Series B Unit, Vested and Unvested
Additional disclosures
Shares exchange ratio	176.0041
Exchanged B Units
Additional disclosures
Expense recognized				$ 10,600
Shares exchanged	17,353,999
Unvested Series B Units
Additional disclosures
Shares converted	32,855
IDR LLC
Additional disclosures
Percentage of amount of quarterly distribution in excess of threshold limit						6.00%
Threshold limit for quarterly distribution						$ 7,500
IDR LLC \| Series B unit awards
Additional disclosures
Authorized units						98,600
Outstanding units						98,600
Threshold limit for conversion of units to common shares						$ 2,000,000
IDR LLC \| Series B unit awards \| Maximum
Additional disclosures
Percentage of amount of equity value in excess of threshold limit for conversion of units to common shares						6.00%
IDR LLC \| Series B Unit Awards classified as equity
Additional disclosures
Floor equity value	$ 2,000,000		$ 2,000,000
Expected volatility (as a percent)	40.00%
Risk free rate (as a percent)	2.51%
Weighted average cost of capital (as a percent)	7.25%
Estimated value (in dollars per unit)	$ 1,257