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Represents minimum annual distribution as per partnership agreement.

No definition available.

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Represents minimum quarterly distribution as per partnership agreement.

No definition available.

Name:	am_LimitedPartnerMinimumQuarterlyDistributionPerPartnershipAgreement
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Represents the pro rata cash distribution made to the holders of common and subordinated units.

No definition available.

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Represents the minimum amount of cash distributions per common unit and subordinated unit in any quarter which will trigger distributions to the entity's unitholders and general partner as holder of incentive distribution rights.

No definition available.

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Represents the unitholders marginal percentage interest in distribution.

No definition available.

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Amount of cash distribution paid to unit-holder of limited partnership (LP).

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

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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.

No definition available.

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Data Type:	xbrli:stringItemType
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Name:	us-gaap_PartnerCapitalComponentsAxis=am_CommonUnitsMember
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Data Type:	na
Balance Type:
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Name:	us-gaap_DividendsAxis=am_Above0.1955UpTo0.2125Member
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Balance Type:
Period Type:

Name:	us-gaap_DividendsAxis=am_Above0.2125UpTo0.2550Member
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