Equity Based Compensation and Cash Awards (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended			3 Months Ended						9 Months Ended
	Mar. 19, 2019	Mar. 31, 2023	Jul. 31, 2020	Jan. 31, 2020	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Mar. 12, 2019
Common Stock
Number of units
Issuance of common stock upon conversion of performance share units (in shares)					22,000	1,011,000	148,000	25,000	754,000	188,000
AR LTIP
Additional disclosures
Equity based compensation expense allocated from Antero Resources					$ 0.0			$ 0.1				$ 0.4
AR LTIP | Maximum
Additional disclosures
Equity based compensation expense allocated from Antero Resources											$ 0.1
AM LTIP
Additional disclosures
Number of stock-based compensation awards authorized														15,398,901
Number of shares available for future grant under the Plan					4,694,623						4,694,623
Cash awards granted			$ 0.7	$ 2.2
Vesting period for cash awards			4 years	3 years
Cash awards accrued in other liabilities					$ 0.1						$ 0.1		$ 0.5
AM LTIP RSUs
Number of units
Total awarded and unvested at the beginning of the period (in shares)							4,877,258				4,877,258
Granted (in shares)											3,103,722
Vested (in shares)											(1,901,400)
Forfeited (in shares)											(170,365)
Total awarded and unvested at the end of the period (in shares)					5,909,215						5,909,215
Weighted average grant date fair value
Total awarded and unvested at the beginning of the period (in dollars per unit)							$ 9.79				$ 9.79
Granted (in dollars per unit)											10.59
Vested (in dollars per unit)											9.59
Forfeited (in dollars per unit)											10.39
Total awarded and unvested at the end of the period (in dollars per unit)					$ 10.26						$ 10.26
Additional disclosures
Unamortized expense					$ 48.0						$ 48.0
Shares exchange ratio	1.8926
Weighted average period for recognizing unrecognized stock-based compensation expense											2 years
ROIC PSUs
Number of units
Total awarded and unvested at the beginning of the period (in shares)							439,935				439,935
Granted (in shares)											512,166
Total awarded and unvested at the end of the period (in shares)					952,101						952,101
Weighted average grant date fair value
Total awarded and unvested at the beginning of the period (in dollars per unit)							$ 11.28				$ 11.28
Granted (in dollars per unit)											10.58
Total awarded and unvested at the end of the period (in dollars per unit)					$ 10.90						$ 10.90
Additional disclosures
Unamortized expense					$ 14.0						$ 14.0
Weighted average period for recognizing unrecognized stock-based compensation expense											2 years 1 month 6 days
2022 ROIC PSUs
Additional disclosures
Vesting period		3 years
2022 ROIC PSUs | Minimum
Additional disclosures
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned		0.00%
2022 ROIC PSUs | Maximum
Additional disclosures
Percentage of target number of ROIC PSUs originally granted that may ultimately be earned		200.00%