| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.21.1 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 122 </ContextCount> |
| <ElementCount> 298 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> true </FootnotesReported> |
| <SegmentCount> 43 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 14 </UnitCount> |
| <MyReports> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 100000 - Document - Document and Entity Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DocumentDocumentAndEntityInformation </Role> |
| | | <ShortName> Document and Entity Information </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 100010 - Statement - CONSOLIDATED BALANCE SHEETS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/StatementCONSOLIDATEDBALANCESHEETS </Role> |
| | | <ShortName> CONSOLIDATED BALANCE SHEETS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 100020 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/StatementCONSOLIDATEDSTATEMENTSOFOPERATIONS </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF OPERATIONS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 100030 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/StatementCONSOLIDATEDSTATEMENTSOFCHANGESINPARTNERSCAPITAL </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 100040 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/StatementCONSOLIDATEDSTATEMENTSOFCASHFLOWS </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 100050 - Disclosure - Basis of Presentation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureBasisOfPresentation </Role> |
| | | <ShortName> Basis of Presentation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 100060 - Disclosure - Summary of Significant Accounting Policies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies </Role> |
| | | <ShortName> Summary of Significant Accounting Policies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 100070 - Disclosure - Property, Plant and Equipment </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipment </Role> |
| | | <ShortName> Property, Plant and Equipment </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 100080 - Disclosure - Derivative Instruments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureDerivativeInstruments </Role> |
| | | <ShortName> Derivative Instruments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 100090 - Disclosure - Asset Retirement Obligations </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureAssetRetirementObligations </Role> |
| | | <ShortName> Asset Retirement Obligations </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 100100 - Disclosure - Fair Value of Financial Instruments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureFairValueOfFinancialInstruments </Role> |
| | | <ShortName> Fair Value of Financial Instruments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 100110 - Disclosure - Certain Relationships and Related Party Transactions </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCertainRelationshipsAndRelatedPartyTransactions </Role> |
| | | <ShortName> Certain Relationships and Related Party Transactions </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 100120 - Disclosure - Commitments and Contingencies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCommitmentsAndContingencies </Role> |
| | | <ShortName> Commitments and Contingencies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 100130 - Disclosure - Issuances of Units </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureIssuancesOfUnits </Role> |
| | | <ShortName> Issuances of Units </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 100140 - Disclosure - Cash Distributions </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCashDistributions </Role> |
| | | <ShortName> Cash Distributions </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 100150 - Disclosure - Correction of An Immaterial Error </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCorrectionOfAnImmaterialError </Role> |
| | | <ShortName> Correction of An Immaterial Error </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 100160 - Disclosure - Supplemental Oil and Gas Information (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnaudited </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 100170 - Disclosure - Quarterly Results </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureQuarterlyResults </Role> |
| | | <ShortName> Quarterly Results </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 100180 - Disclosure - Summary of Significant Accounting Policies (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies </Role> |
| | | <ShortName> Summary of Significant Accounting Policies (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies </ParentRole> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 100190 - Disclosure - Summary of Significant Accounting Policies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesTables </Role> |
| | | <ShortName> Summary of Significant Accounting Policies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies </ParentRole> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 100200 - Disclosure - Property, Plant and Equipment (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipmentTables </Role> |
| | | <ShortName> Property, Plant and Equipment (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipment </ParentRole> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 100210 - Disclosure - Asset Retirement Obligations (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureAssetRetirementObligationsTables </Role> |
| | | <ShortName> Asset Retirement Obligations (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureAssetRetirementObligations </ParentRole> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 100220 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnaudited </ParentRole> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 100230 - Disclosure - Quarterly Results (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureQuarterlyResultsTables </Role> |
| | | <ShortName> Quarterly Results (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureQuarterlyResults </ParentRole> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 100240 - Disclosure - Basis of Presentation - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureBasisOfPresentationAdditionalInformationDetails </Role> |
| | | <ShortName> Basis of Presentation - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 100250 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails </Role> |
| | | <ShortName> Summary of Significant Accounting Policies - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 100260 - Disclosure - Summary of Significant Accounting Policies (Schedule of Net Loss Reconciliation) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfNetLossReconciliationDetails </Role> |
| | | <ShortName> Summary of Significant Accounting Policies (Schedule of Net Loss Reconciliation) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 100270 - Disclosure - Summary of Significant Accounting Policies (Reconciliation of Weighted Average Number of Common Units) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesReconciliationOfWeightedAverageNumberOfCommonUnitsDetails </Role> |
| | | <ShortName> Summary of Significant Accounting Policies (Reconciliation of Weighted Average Number of Common Units) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 100280 - Disclosure - Property, Plant and Equipment (Summary of Property, Plant and Equipment) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipmentSummaryOfPropertyPlantAndEquipmentDetails </Role> |
| | | <ShortName> Property, Plant and Equipment (Summary of Property, Plant and Equipment) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipmentTables </ParentRole> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 100290 - Disclosure - Property, Plant and Equipment - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformationDetails </Role> |
| | | <ShortName> Property, Plant and Equipment - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 100300 - Disclosure - Derivative Instruments - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureDerivativeInstrumentsAdditionalInformationDetails </Role> |
| | | <ShortName> Derivative Instruments - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 100310 - Disclosure - Asset Retirement Obligations - Schedule of Changes in Asset Retirement Obligations (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureAssetRetirementObligationsScheduleOfChangesInAssetRetirementObligationsDetails </Role> |
| | | <ShortName> Asset Retirement Obligations - Schedule of Changes in Asset Retirement Obligations (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 100320 - Disclosure - Fair Value of Financial Instruments - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsAdditionalInformationDetails </Role> |
| | | <ShortName> Fair Value of Financial Instruments - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 100330 - Disclosure - Certain Relationships and Related Party Transactions - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCertainRelationshipsAndRelatedPartyTransactionsAdditionalInformationDetails </Role> |
| | | <ShortName> Certain Relationships and Related Party Transactions - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 100340 - Disclosure - Commitments and Contingencies - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformationDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 100350 - Disclosure - Cash Distributions - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCashDistributionsAdditionalInformationDetails </Role> |
| | | <ShortName> Cash Distributions - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 100360 - Disclosure - Correction of an Immaterial Error - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureCorrectionOfImmaterialErrorAdditionalInformationDetails </Role> |
| | | <ShortName> Correction of an Immaterial Error - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 100370 - Disclosure - Supplemental Oil and Gas Information (Unaudited) - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedAdditionalInformationDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 100380 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Reserve Quantity Information) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedReserveQuantityInformationDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Reserve Quantity Information) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 100390 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Schedule of Change in Proved Reserves) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedScheduleOfChangeInProvedReservesDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Schedule of Change in Proved Reserves) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 100400 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Schedule of Results Capitalized Costs Related to Oil and Gas Producing Activities) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedScheduleOfResultsCapitalizedCostsRelatedToOilAndGasProducingActivitiesDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Schedule of Results Capitalized Costs Related to Oil and Gas Producing Activities) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 100410 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Schedule of Results of Operations from Oil and Gas Producing Activities) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedScheduleOfResultsOfOperationsFromOilAndGasProducingActivitiesDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Schedule of Results of Operations from Oil and Gas Producing Activities) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 100420 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Schedule of Costs Incurred in Oil and Gas Producing Activities) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedScheduleOfCostsIncurredInOilAndGasProducingActivitiesDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Schedule of Costs Incurred in Oil and Gas Producing Activities) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 100430 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Schedule of Standardized Measure of Estimated Discounted Future Net Cash Flows) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedScheduleOfStandardizedMeasureOfEstimatedDiscountedFutureNetCashFlowsDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Schedule of Standardized Measure of Estimated Discounted Future Net Cash Flows) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 100440 - Disclosure - Supplemental Oil and Gas Information (Unaudited) (Schedule of Changes in Discounted Future Net Cash Flows) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedScheduleOfChangesInDiscountedFutureNetCashFlowsDetails </Role> |
| | | <ShortName> Supplemental Oil and Gas Information (Unaudited) (Schedule of Changes in Discounted Future Net Cash Flows) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureSupplementalOilAndGasInformationUnauditedTables </ParentRole> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="agp-20201231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 100450 - Disclosure - Quarterly Results (Unaudited) - Schedule of Quarterly Financial Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureQuarterlyResultsUnauditedScheduleOfQuarterlyFinancialInformationDetails </Role> |
| | | <ShortName> Quarterly Results (Unaudited) - Schedule of Quarterly Financial Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.atlasgrowthpartners.com/20201231/taxonomy/role/DisclosureQuarterlyResultsTables </ParentRole> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File> agp-20201231.xml </File> |
| | <File> agp-20201231.xsd </File> |
| | <File> agp-20201231_cal.xml </File> |
| | <File> agp-20201231_def.xml </File> |
| | <File> agp-20201231_lab.xml </File> |
| | <File> agp-20201231_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies> |
| | <BaseTaxonomy> http://fasb.org/us-gaap/2020-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/dei/2019-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/srt/2020-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |