v3.3.0.814

Business and Organization (Details) $ / shares in Units, $ in Millions |  |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 23, 2015 USD ($) item shares | Nov. 10, 2014 USD ($) $ / shares shares | Jun. 30, 2015 shares | Dec. 31, 2014 shares
Business and Organization |  |  |  |
Threshold Non Operating Equity Percentage |  |  |  | 15.00%
Contribution Agreement |  |  |  |
Business and Organization |  |  |  |
Common unitholders units issued | 10,988,421 |  |  |
Cash distribution | $ | $ 552.5 |  |  |
Debt assumed | $ | 171.0 |  |  |
Contribution Agreement | Contingent Consideration Period One |  |  |  |
Business and Organization |  |  |  |
Contingent consideration | $ | $ 125.0 |  |  |
Threshold number of barrels of water to trigger contingent consideration payment | item | 176,295,000 |  |  |
Contribution Agreement | Contingent Consideration Period Two |  |  |  |
Business and Organization |  |  |  |
Contingent consideration | $ | $ 125.0 |  |  |
Threshold number of barrels of water to trigger contingent consideration payment | item | 219,200,000 |  |  |
IPO |  |  |  |
Business and Organization |  |  |  |
Units issued |  | 46,000,000 |  |
Price per common unit of limited partnership | $ / shares |  | $ 25.00 |  |
Publicly owned common units |  |  |  | 46,000,000
Net proceeds received from shares of common stock sold | $ |  | $ 1,100.0 |  |
Common units redeemed |  | 6,000,000 |  |
Net proceeds retained | $ |  | $ 250.0 |  |
Private Placement |  |  |  |
Business and Organization |  |  |  |
Net proceeds received from shares of common stock sold | $ | $ 241.0 |  |  |
Private Placement | Contribution Agreement |  |  |  |
Business and Organization |  |  |  |
Cash distribution | $ | $ 552.5 |  |  |
Common Unitholders Public |  |  |  |
Business and Organization |  |  |  |
Publicly owned common units |  |  | 46,024,054 | 46,000,000
Common unitholders units issued |  |  | 46,024,054 | 46,000,000
Common Unitholder Antero |  |  |  |
Business and Organization |  |  |  |
Publicly owned common units |  |  | 29,940,957 | 29,940,957
Common unitholders units issued |  |  | 29,940,957 | 29,940,957
Subordinated Unitholder Antero |  |  |  |
Business and Organization |  |  |  |
Publicly owned common units |  |  | 75,940,957 | 75,940,957
Common unitholders units issued |  |  | 75,940,957 | 75,940,957
Antero Midstream Partners LP |  |  |  |
Business and Organization |  |  |  |
Ownership percentage (as a percent) |  |  |  | 30.30%
Antero |  |  |  |
Business and Organization |  |  |  |
Antero common units |  |  |  | 29,940,957
Subordinated units outstanding |  |  |  | 75,940,957
Agreement term for providing gathering and compression services and certain fluid handling services |  |  | 20 years | 20 years
Agreement term for receiving seconded employees |  |  | 20 years | 20 years
Agreement term for receiving certain administrative services |  |  | 20 years | 20 years
Antero | IPO |  |  |  |
Business and Organization |  |  |  |
Debt repaid using the proceeds of IPO | $ |  | $ 843.0 |  |
Threshold Non Operating Equity Percentage |  |  | 15.00% |
Antero | Antero Midstream Partners LP |  |  |  |
Business and Organization |  |  |  |
Ownership percentage (as a percent) |  |  |  | 69.70%

X
- Definition Represents the term of agreement with a related party, pursuant to which gathering and compression services and certain fluid handling services are to be provided. + References No definition available. + Details
Name: | am_AgreementTermWithRelatedPartyGatheringAndCompressionServicesAndCertainFluidHandlingServices
Namespace Prefix: | am_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the term of agreement with a related party, pursuant to which they will provide certain administrative services to the entity. + References No definition available. + Details
Name: | am_AgreementTermWithRelatedPartyToProvideCertainAdministrationServicesToEntity
Namespace Prefix: | am_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the term of agreement with a related party, pursuant to which they will provide seconded employees to perform certain operational services to the entity. + References No definition available. + Details
Name: | am_AgreementTermWithRelatedPartyToProvideSecondedEmployeesToEntity
Namespace Prefix: | am_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow to repay indebtedness assumed from the parent and to reimburse the parent for certain capital expenditures incurred. + References No definition available. + Details
Name: | am_CashOutflowToParentToRepayIndebtednessAndToReimburse
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amount of debt assumed. + References No definition available. + Details
Name: | am_DebtAssumed
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 No definition available. + Details
Name: | am_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems
Namespace Prefix: | am_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of the entity's units owned. + References No definition available. + Details
Name: | am_OwnershipPercentage
Namespace Prefix: | am_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public which is retained for general partnership purposes. + References No definition available. + Details
Name: | am_ProceedsFromIssuanceOfSharesRetained
Namespace Prefix: | am_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per unit amount received by partnership for each unit of limited partnership common interests issued or sold. + References No definition available. + Details
Name: | am_SaleOfLimitedPartnershipInterestsPricePerUnit
Namespace Prefix: | am_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of subordinated units outstanding. + References No definition available. + Details
Name: | am_SubordinatedUnitholdersCapitalAccountUnitsOutstanding
Namespace Prefix: | am_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the threshold non operating equity percentage. + References No definition available. + Details
Name: | am_ThresholdNonOperatingEquityPercentage
Namespace Prefix: | am_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the threshold number of barrels of fresh water to be purchased from the entity to trigger a contingent consideration payment. + References No definition available. + Details
Name: | am_ThresholdNumberOfBarrelsOfWaterToTriggerContingentConsiderationPayment
Namespace Prefix: | am_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of general partner units outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
Name: | us-gaap_GeneralPartnersCapitalAccountUnitsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of limited partner units issued. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
Name: | us-gaap_LimitedPartnersCapitalAccountUnitsIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of limited partner units outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
Name: | us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units redeemed during the year of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 16 -Subparagraph a, b -Article 6 + Details
Name: | us-gaap_PartnersCapitalAccountUnitsRedeemed
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 16 -Subparagraph a, b -Article 6 + Details
Name: | us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=am_ContributionConveyanceAndAssumptionAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContingentConsiderationByTypeAxis=am_ContingentConsiderationPeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContingentConsiderationByTypeAxis=am_ContingentConsiderationPeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=am_CommonUnitholdersPublicMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=am_CommonUnitholdersAnteroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=am_SubordinatedUnitholderAnteroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=am_AnteroMidstreamPartnersLpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=am_AnteroResourcesCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |