Revenue (Details)	6 Months Ended
Jun. 30, 2018 USD ($) item $ / bbl $ / Mcf
Gathering And Compression Agreement
Agreements
Low pressure gathering fee \| $ / Mcf	0.30
High pressure gathering fee \| $ / Mcf	0.18
Compression fee \| $ / Mcf	0.18
Term of new construction	10 years
Gathering And Compression Agreement \| Minimum
Agreements
Minimum volume commitment that require Antero to pay	70.00%
Gathering And Compression Agreement \| Maximum
Agreements
Minimum volume commitment that require Antero to pay	75.00%
Water Services Agreement
Agreements
Term of agreement with Antero	20 years
Water Service Agreement fee \| $ / bbl	3.116
Waste water treatment and high rate transfer operating expenses \| $	$ 4.00
Third party out of pocket costs reimbursement (as a percent)	3.00%
Minimum Obligation
2018 \| item	120,000
2019 \| item	120,000
Water Services Agreement \| West Virginia
Agreements
Water Service Agreement fee \| $ / bbl	3.685
Water Services Agreement \| Ohio
Agreements
Water Service Agreement fee \| $ / bbl	3.635

Represents the term of agreement with Antero, pursuant to which gathering and compression services are to be provided.

No definition available.

Name:	am_AgreementTermWithRelatedParty
Namespace Prefix:	am_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents information related to agreements.

+ References

No definition available.

+ Details

Name:	am_Agreements
Namespace Prefix:	am_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the receipt of compression fee received per Mcf by gathering and compression agreement, subject to CPI based adjustments.

+ References

No definition available.

+ Details

Name:	am_GatheringAndCompressionAgreementCompressionFeeSubjectToCpiBasedAdjustments
Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the receipt of high pressure gathering fee received per Mcf by gathering and compression agreement, subject to CPI based adjustments.

+ References

No definition available.

+ Details

Name:	am_GatheringAndCompressionAgreementHighPressureGatheringFeeSubjectToCpiBasedAdjustments
Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the receipt of low pressure gathering fee received per Mcf by gathering and compression agreement, subject to CPI based adjustments.

+ References

No definition available.

+ Details

Name:	am_GatheringAndCompressionAgreementLowPressureGatheringFeeSubjectToCpiBasedAdjustments
Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum volume commitments that require Antero to utilize or pay certain percentage of the capacity of such new construction.

+ References

No definition available.

+ Details

Name:	am_GatheringAndCompressionAgreementMinimumVolumeCommitmentThatRequireAnteroToPay
Namespace Prefix:	am_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

No definition.

+ References

No definition available.

+ Details

Name:	am_MinimumObligationAbstract
Namespace Prefix:	am_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum obligation to be paid in year one (in barrels per day).

+ References

No definition available.

+ Details

Name:	am_MinimumObligationInBarrelsPerDayYearOne
Namespace Prefix:	am_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum obligation to be paid in year two (in barrels per day).

+ References

No definition available.

+ Details

Name:	am_MinimumObligationInBarrelsPerDayYearTwo
Namespace Prefix:	am_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of construction.

+ References

No definition available.

+ Details

Name:	am_TermOfConstruction
Namespace Prefix:	am_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of third party out of pocket cost reimbursement.

+ References

No definition available.

+ Details

Name:	am_ThirdPartyOutOfPocketCostsReimbursementPercentage
Namespace Prefix:	am_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

"Operating expenses relating to waste water treatment services and high rate transfer and products such as lubricants for offshore drilling, and retail or wholesale sales in a marina."

+ References

No definition available.

+ Details

Name:	am_WasteWaterTreatmentAndHighRateTransferOperatingExpenses
Namespace Prefix:	am_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount of fixed fee paid per barrel subject to annual CPI adjustments.

+ References

No definition available.

+ Details

Name:	am_WaterServiceAgreementFixedFeeSubjectToAnnualCpiAdjustments
Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_StatementGeographicalAxis=stpr_WV
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=stpr_OH
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: