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
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Period Type:	duration

- Definition

Represents information related to agreements.

+ References

No definition available.

+ Details

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

- Definition

Represents allocation of costs.

+ References

No definition available.

+ Details

Name:	am_AllocationOfCosts
Namespace Prefix:	am_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- 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

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Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
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- 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

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Namespace Prefix:	am_
Data Type:	us-types:perUnitItemType
Balance Type:	na
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- 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

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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

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

- Definition

Revenue from marine-related services and products such as lubricants for offshore drilling, and retail or wholesale sales in a marina with affiliates.

+ References

No definition available.

+ Details

Name:	am_MarineServicesRevenueAffiliate
Namespace Prefix:	am_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

No definition.

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	am_
Data Type:	xbrli:decimalItemType
Balance Type:	na
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- Definition

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

+ References

No definition available.

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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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

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Payroll costs incurred (including equity-based compensation) that are directly related to services rendered by an entity during the reporting period.

+ References

+ Details

Name:	us-gaap_CostOfServicesDirectLabor
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Revenue related to midstream and downstream gas activities. May include the following: gathering from wells, processing to remove impurities, storage, transmission, and the sale of natural gas and related products.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 24

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62246-109447

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 23

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62136-109447

+ Details

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

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=am_AnteroResourcesCorporationMember
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Data Type:	na
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- Details

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Data Type:	na
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- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=am_HighPressureLinesMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=am_CompressorStationsMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	dei_LegalEntityAxis=am_AnteroMidstreamPartnersLpMember
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Transactions with Affiliates (Details) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
Transactions with Affiliates (Details) $ in Thousands	Sep. 23, 2015 bbl / d $ / item $ / bbl	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($) $ / bbl $ / Mcf	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)
Revenue:
Water handling - affiliate		$ 31,500	$ 40,518	$ 64,941	$ 65,277	$ 162,283	$ 35,871
Allocation of costs
General and administrative expense		11,400	7,900	22,300	13,500
Agreements
Gathering and compression - affiliate		56,593	16,923	108,836	28,696	$ 95,746	22,363	$ 647
Water Services Agreement
Agreements
Term of agreement with Antero	20 years
Minimum Obligation
2016 \| bbl / d	90,000
2017 \| bbl / d	100,000
2018 \| bbl / d	120,000
2019 \| bbl / d	2,019
Water Services Agreement \| West Virginia
Agreements
Water Service Agreement fee \| $ / item	3.685
Water Services Agreement \| Pennsylvania
Agreements
Water Service Agreement fee \| $ / bbl	3.685
Water Services Agreement \| Ohio
Agreements
Water Service Agreement fee \| $ / item	3.635
Antero \| Gathering And Compression Agreement
Agreements
Term of agreement with Antero						20 years
Low pressure gathering fee \| $ / Mcf						0.30
High pressure gathering fee \| $ / Mcf						0.18
Compression fee \| $ / Mcf						0.18
Condensate gathering fee \| $ / bbl						4.00
Antero \| High Pressure Lines \| Gathering And Compression Agreement
Agreements
Minimum volume commitment that require Antero to pay						75.00%
Antero \| Compressor stations \| Gathering And Compression Agreement
Agreements
Minimum volume commitment that require Antero to pay						70.00%
Antero Midstream Partners LP
Allocation of costs
Direct labor expenses		$ 800	$ 300	$ 1,400	$ 500	$ 1,500
General and administrative expense						$ 30,300	$ 34,000	$ 3,000