Amount of carry received from drilling partner.

No definition available.

Name:	ar_CarryReceivedFromDrillingPartner
Namespace Prefix:	ar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of tranches.

+ References

No definition available.

+ Details

Name:	ar_NumberOfTranches
Namespace Prefix:	ar_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of total development expenses to be funded by third party for each well spud.

+ References

No definition available.

+ Details

Name:	ar_PercentageOfTotalDevelopmentCapitalExpensesToBeFunded
Namespace Prefix:	ar_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of total development capital spending to be funded by drilling partner under a drilling partnership.

+ References

No definition available.

+ Details

Name:	ar_PercentageOfTotalDevelopmentCapitalSpendingToBeFundedByDrillingPartner
Namespace Prefix:	ar_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of working interest in each well spud during the calendar year.

+ References

No definition available.

+ Details

Name:	ar_ThirdPartyWorkingInterestInEachWellSpud
Namespace Prefix:	ar_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

+ Details

Name:	us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of property with proven oil and gas reserves.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_GainLossOnSaleOfProvedProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=ar_DrillingPartnershipTransactionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=ar_QlCapitalPartnersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=ar_UnaffiliatedThirdPartyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Transactions (Details) - Drilling Partnership $ in Millions			3 Months Ended	6 Months Ended	12 Months Ended			46 Months Ended
Transactions (Details) - Drilling Partnership $ in Millions	Dec. 11, 2024	Feb. 17, 2021 tranche	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2021
QL
Transactions
Number of annual tranches \| tranche		4
Percent of total development capital funded by drilling partner					20.00%	15.00%	15.00%	20.00%	20.00%
Amount of carry received from drilling partner.					$ 32	$ 29	$ 29
Gain (loss) on interests conveyed								$ 0
Unaffiliated third-party
Transactions
Gain (loss) on interests conveyed			$ 0	$ 0
Third-party interest in each well spud	15.00%
Unaffiliated third-party \| Minimum
Transactions
Percentage of total development capital expenses	15.00%