Fundies.
English

Segment disclosures

Company overview

PLAINS GP HOLDINGS LP

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

134 dimension combinations 758 retained observations 25 reported periods Partial retained history

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Operating Segments Excluding Intersegment Elimination · Segment Facilities

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=pagp:OperatingSegmentsExcludingIntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30128000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30436000000 USD20211108Open filing evidence
2021-04-01 – 2021-06-30145000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30308000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-31163000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-31622000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30150000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30473000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-30149000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30323000000 USD20210806Open filing evidence

Operating Segments Excluding Intersegment Elimination · Segment Supply And Logistics

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=pagp:OperatingSegmentsExcludingIntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3010515000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-3028221000000 USD20211108Open filing evidence
2020-01-01 – 2020-12-3122058000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-305537000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-3016370000000 USD20211108Open filing evidence

Operating Segments Excluding Intersegment Elimination · Segment Transportation

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=pagp:OperatingSegmentsExcludingIntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30222000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30700000000 USD20211108Open filing evidence
2020-01-01 – 2020-12-311016000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30242000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30774000000 USD20211108Open filing evidence

Intersegment Elimination · Segment Facilities

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30-98000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30-305000000 USD20211108Open filing evidence
2020-01-01 – 2020-12-31-516000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30-121000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30-387000000 USD20211108Open filing evidence

Intersegment Elimination · Segment Supply And Logistics

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-300 USD20211108Open filing evidence
2021-01-01 – 2021-09-30-1000000 USD20211108Open filing evidence
2020-01-01 – 2020-12-31-1000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-300 USD20211108Open filing evidence
2020-01-01 – 2020-09-30-1000000 USD20211108Open filing evidence

Intersegment Elimination · Segment Transportation

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30-307000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30-868000000 USD20211108Open filing evidence
2020-01-01 – 2020-12-31-1004000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30-252000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30-756000000 USD20211108Open filing evidence

Operating Segments · Crude Oil NGL And Other Terminalling And Storage · Segment Facilities

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:CrudeOilNGLAndOtherTerminallingAndStorageMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30154000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30324000000 USD20210806Open filing evidence
2020-01-01 – 2020-12-31704000000 USD20210301Open filing evidence
2020-04-01 – 2020-06-30176000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30357000000 USD20210806Open filing evidence

Operating Segments · Crude Oil Transactions · Segment Supply And Logistics

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:CrudeOilTransactionsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-3121202000000 USD20210301Open filing evidence

Operating Segments · NGL And Natural Gas Processing And Fractionation · Segment Facilities

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:NGLAndNaturalGasProcessingAndFractionationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3173000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-31350000000 USD20210301Open filing evidence

Operating Segments · NGL And Other Transactions · Segment Supply And Logistics

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:NGLAndOtherTransactionsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30180000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30736000000 USD20201106Open filing evidence

Operating Segments · Rail Load And Unload · Segment Facilities

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:RailLoadAndUnloadMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-308000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-3020000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-3111000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-3145000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-308000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3030000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-308000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-3022000000 USD20210806Open filing evidence

Operating Segments · Tariff Activities Crude Oil Pipelines · Segment Transportation

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesCrudeOilPipelinesMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30479000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-301338000000 USD20211108Open filing evidence
2020-01-01 – 2020-12-311805000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30442000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-301360000000 USD20211108Open filing evidence

Operating Segments · Tariff Activities · Segment Transportation

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-311906000000 USD20210301Open filing evidence

Operating Segments · Tariff Activities NGL Pipelines · Segment Transportation

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesNGLPipelinesMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-31101000000 USD20210301Open filing evidence

Operating Segments · Terminalling Storage And Other · Crude Oil Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-3194000000 USD20260508Open filing evidence
2025-07-01 – 2025-09-3084000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-30258000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-3087000000 USD20250808Open filing evidence
2025-01-01 – 2025-06-30175000000 USD20250808Open filing evidence
2025-01-01 – 2025-03-3188000000 USD20260508Open filing evidence
2024-07-01 – 2024-09-30100000000 USD20251107Open filing evidence
2024-01-01 – 2024-09-30286000000 USD20251107Open filing evidence
2024-04-01 – 2024-06-3095000000 USD20250808Open filing evidence
2024-01-01 – 2024-06-30187000000 USD20250808Open filing evidence
2024-01-01 – 2024-03-3192000000 USD20250509Open filing evidence
2023-07-01 – 2023-09-3099000000 USD20241108Open filing evidence
2023-01-01 – 2023-09-30284000000 USD20241108Open filing evidence
2023-04-01 – 2023-06-3094000000 USD20240809Open filing evidence
2023-01-01 – 2023-06-30185000000 USD20240809Open filing evidence
2022-07-01 – 2022-09-3090000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30270000000 USD20231108Open filing evidence

Operating Segments · Terminalling Storage And Other · Natural Gas Liquids Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-312000000 USD20260508Open filing evidence
2025-07-01 – 2025-09-302000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-304000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-302000000 USD20250808Open filing evidence
2025-01-01 – 2025-06-301000000 USD20250808Open filing evidence
2025-01-01 – 2025-03-310 RestatedUSD20260508Open filing evidence
2024-07-01 – 2024-09-301000000 RestatedUSD20251107Open filing evidence
2024-01-01 – 2024-09-305000000 RestatedUSD20251107Open filing evidence
2024-04-01 – 2024-06-302000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-06-302000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-03-3121000000 USD20250509Open filing evidence
2023-07-01 – 2023-09-3023000000 USD20241108Open filing evidence
2023-01-01 – 2023-09-3074000000 USD20241108Open filing evidence
2023-04-01 – 2023-06-3023000000 USD20240809Open filing evidence
2023-01-01 – 2023-06-3052000000 USD20240809Open filing evidence

Operating Segments · Terminalling Storage And Other Revenue · Crude Oil Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-31349000000 USD20260227Open filing evidence
2024-01-01 – 2024-12-31384000000 USD20260227Open filing evidence
2023-01-01 – 2023-12-31381000000 USD20260227Open filing evidence
2022-01-01 – 2022-12-31362000000 USD20250228Open filing evidence
2021-01-01 – 2021-12-31431000000 USD20240229Open filing evidence

Operating Segments · Terminalling Storage And Other Revenue · Natural Gas Liquids Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-12-316000000 USD20260227Open filing evidence
2024-01-01 – 2024-12-317000000 RestatedUSD20260227Open filing evidence
2023-01-01 – 2023-12-317000000 RestatedUSD20260227Open filing evidence
2022-01-01 – 2022-12-31100000000 USD20250228Open filing evidence
2021-01-01 – 2021-12-3182000000 USD20240229Open filing evidence

Operating Segments · Transportation · Crude Oil Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TransportationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2025-07-01 – 2025-09-30337000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-30990000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-30340000000 USD20250808Open filing evidence
2025-01-01 – 2025-06-30652000000 USD20250808Open filing evidence
2025-01-01 – 2025-03-31312000000 USD20250509Open filing evidence
2024-07-01 – 2024-09-30321000000 USD20251107Open filing evidence
2024-01-01 – 2024-09-30915000000 USD20251107Open filing evidence
2024-04-01 – 2024-06-30295000000 USD20250808Open filing evidence
2024-01-01 – 2024-06-30595000000 USD20250808Open filing evidence
2024-01-01 – 2024-03-31300000000 USD20250509Open filing evidence
2023-07-01 – 2023-09-30333000000 USD20241108Open filing evidence
2023-01-01 – 2023-09-30839000000 USD20241108Open filing evidence
2023-04-01 – 2023-06-30255000000 USD20240809Open filing evidence
2023-01-01 – 2023-06-30505000000 USD20240809Open filing evidence
2023-01-01 – 2023-03-31250000000 USD20240510Open filing evidence
2022-07-01 – 2022-09-30185000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30515000000 USD20231108Open filing evidence

Operating Segments · Transportation · Natural Gas Liquids Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TransportationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2025-01-01 – 2025-03-319000000 USD20250509Open filing evidence
2024-07-01 – 2024-09-308000000 USD20241108Open filing evidence
2024-01-01 – 2024-09-3026000000 USD20241108Open filing evidence
2024-04-01 – 2024-06-309000000 USD20240809Open filing evidence
2024-01-01 – 2024-06-3018000000 USD20240809Open filing evidence
2024-01-01 – 2024-03-3110000000 USD20250509Open filing evidence
2023-07-01 – 2023-09-307000000 USD20241108Open filing evidence
2023-01-01 – 2023-09-3023000000 USD20241108Open filing evidence
2023-04-01 – 2023-06-308000000 USD20240809Open filing evidence
2023-01-01 – 2023-06-3015000000 USD20240809Open filing evidence
2022-04-01 – 2022-06-307000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3016000000 USD20230809Open filing evidence

Operating Segments · Transportation Revenue · Crude Oil Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TransportationRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-31338000000 USD20260508Open filing evidence
2025-01-01 – 2025-12-311330000000 USD20260227Open filing evidence
2025-01-01 – 2025-03-31312000000 USD20260508Open filing evidence
2024-01-01 – 2024-12-311231000000 USD20260227Open filing evidence
2023-01-01 – 2023-12-311144000000 USD20260227Open filing evidence
2022-01-01 – 2022-12-31745000000 USD20250228Open filing evidence
2021-01-01 – 2021-12-31484000000 USD20240229Open filing evidence
2020-01-01 – 2020-12-31570000000 USD20230301Open filing evidence

Operating Segments · Transportation Revenue · Natural Gas Liquids Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TransportationRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-12-3136000000 USD20250228Open filing evidence
2023-01-01 – 2023-12-3130000000 USD20250228Open filing evidence
2022-01-01 – 2022-12-3130000000 USD20250228Open filing evidence
2021-01-01 – 2021-12-3125000000 USD20240229Open filing evidence
2020-01-01 – 2020-12-3129000000 USD20230301Open filing evidence

Operating Segments · Trucking · Segment Transportation

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TruckingMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-3199000000 USD20210301Open filing evidence

Operating Segments · Product And Service Other · Segment Facilities

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3117000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-3139000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-309000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3029000000 USD20201106Open filing evidence

Operating Segments · Product And Service Other · Segment Supply And Logistics

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-31-292000000 USD20210301Open filing evidence

Operating Segments · Product And Service Other · Segment Transportation

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-3115000000 USD20210301Open filing evidence

Operating Segments · Product · Crude Oil Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-3112106000000 RestatedUSD20260508Open filing evidence
2025-01-01 – 2025-12-3142373000000 RestatedUSD20260227Open filing evidence
2025-07-01 – 2025-09-3011132000000 RestatedUSD20251107Open filing evidence
2025-01-01 – 2025-09-3032313000000 RestatedUSD20251107Open filing evidence
2025-04-01 – 2025-06-3010178000000 RestatedUSD20250808Open filing evidence
2025-01-01 – 2025-06-3021185000000 RestatedUSD20250808Open filing evidence
2025-01-01 – 2025-03-3111008000000 USD20260508Open filing evidence
2024-01-01 – 2024-12-3147034000000 RestatedUSD20260227Open filing evidence
2024-07-01 – 2024-09-3012009000000 RestatedUSD20251107Open filing evidence
2024-01-01 – 2024-09-3035515000000 RestatedUSD20251107Open filing evidence
2024-04-01 – 2024-06-3012330000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-06-3023505000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-03-3111176000000 RestatedUSD20250509Open filing evidence
2023-01-01 – 2023-12-3145587000000 RestatedUSD20260227Open filing evidence
2023-07-01 – 2023-09-3011481000000 RestatedUSD20241108Open filing evidence
2023-01-01 – 2023-09-3033815000000 RestatedUSD20241108Open filing evidence
2023-04-01 – 2023-06-3010925000000 RestatedUSD20240809Open filing evidence
2023-01-01 – 2023-06-3022333000000 RestatedUSD20240809Open filing evidence
2022-01-01 – 2022-12-3153840000000 RestatedUSD20250228Open filing evidence
2022-07-01 – 2022-09-3013367000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3041802000000 USD20231108Open filing evidence
2022-01-01 – 2022-03-3112811000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-3139395000000 RestatedUSD20240229Open filing evidence
2021-07-01 – 2021-09-3010468000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-3027553000000 USD20221108Open filing evidence
2021-01-01 – 2021-03-317586000000 USD20220510Open filing evidence

Operating Segments · Product · Natural Gas Liquids Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-3139000000 USD20260508Open filing evidence
2025-01-01 – 2025-12-31145000000 RestatedUSD20260227Open filing evidence
2025-07-01 – 2025-09-3022000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-3088000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-3024000000 USD20250808Open filing evidence
2025-01-01 – 2025-06-3066000000 USD20250808Open filing evidence
2025-01-01 – 2025-03-3141000000 RestatedUSD20260508Open filing evidence
2024-01-01 – 2024-12-31181000000 RestatedUSD20260227Open filing evidence
2024-07-01 – 2024-09-3019000000 RestatedUSD20251107Open filing evidence
2024-01-01 – 2024-09-30103000000 RestatedUSD20251107Open filing evidence
2024-04-01 – 2024-06-3023000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-06-3084000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-03-31458000000 RestatedUSD20250509Open filing evidence
2023-01-01 – 2023-12-31180000000 RestatedUSD20260227Open filing evidence
2023-07-01 – 2023-09-30201000000 RestatedUSD20241108Open filing evidence
2023-01-01 – 2023-09-301182000000 RestatedUSD20241108Open filing evidence
2023-04-01 – 2023-06-30346000000 RestatedUSD20240809Open filing evidence
2023-01-01 – 2023-06-30982000000 RestatedUSD20240809Open filing evidence
2022-01-01 – 2022-12-312575000000 RestatedUSD20250228Open filing evidence
2022-04-01 – 2022-06-30525000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-06-301207000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-03-31682000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-311829000000 RestatedUSD20240229Open filing evidence
2021-01-01 – 2021-03-31600000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-311218000000 RestatedUSD20230301Open filing evidence

Operating Segments · Service · Crude Oil Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-31442000000 USD20260508Open filing evidence
2025-01-01 – 2025-12-311758000000 USD20260227Open filing evidence
2025-07-01 – 2025-09-30427000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-301307000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-30444000000 USD20250808Open filing evidence
2025-01-01 – 2025-06-30876000000 USD20250808Open filing evidence
2025-01-01 – 2025-03-31431000000 USD20260508Open filing evidence
2024-01-01 – 2024-12-311686000000 USD20260227Open filing evidence
2024-07-01 – 2024-09-30435000000 USD20251107Open filing evidence
2024-01-01 – 2024-09-301246000000 USD20251107Open filing evidence
2024-04-01 – 2024-06-30405000000 USD20250808Open filing evidence
2024-01-01 – 2024-06-30812000000 USD20250808Open filing evidence
2024-01-01 – 2024-03-31406000000 USD20250509Open filing evidence
2023-01-01 – 2023-12-311587000000 USD20260227Open filing evidence
2023-07-01 – 2023-09-30453000000 USD20241108Open filing evidence
2023-01-01 – 2023-09-301173000000 USD20241108Open filing evidence
2023-04-01 – 2023-06-30370000000 USD20240809Open filing evidence
2023-01-01 – 2023-06-30720000000 USD20240809Open filing evidence
2023-01-01 – 2023-03-31349000000 USD20240510Open filing evidence
2022-01-01 – 2022-12-311240000000 USD20250228Open filing evidence
2022-07-01 – 2022-09-30308000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30892000000 USD20231108Open filing evidence
2021-01-01 – 2021-12-311075000000 USD20240229Open filing evidence
2021-07-01 – 2021-09-30233000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-30780000000 USD20221108Open filing evidence
2020-01-01 – 2020-12-311110000000 USD20230301Open filing evidence

Operating Segments · Service · Natural Gas Liquids Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2026-01-01 – 2026-03-312000000 USD20260508Open filing evidence
2025-01-01 – 2025-12-316000000 USD20260227Open filing evidence
2025-07-01 – 2025-09-302000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-304000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-302000000 USD20250808Open filing evidence
2025-01-01 – 2025-06-301000000 USD20250808Open filing evidence
2025-01-01 – 2025-03-3142000000 USD20250509Open filing evidence
2024-01-01 – 2024-12-316000000 RestatedUSD20260227Open filing evidence
2024-07-01 – 2024-09-301000000 RestatedUSD20251107Open filing evidence
2024-01-01 – 2024-09-303000000 RestatedUSD20251107Open filing evidence
2024-04-01 – 2024-06-302000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-06-302000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-03-3149000000 USD20250509Open filing evidence
2023-01-01 – 2023-12-316000000 RestatedUSD20260227Open filing evidence
2023-07-01 – 2023-09-3041000000 USD20241108Open filing evidence
2023-01-01 – 2023-09-30130000000 USD20241108Open filing evidence
2023-04-01 – 2023-06-3035000000 USD20240809Open filing evidence
2023-01-01 – 2023-06-3089000000 USD20240809Open filing evidence
2022-01-01 – 2022-12-31186000000 USD20250228Open filing evidence
2021-01-01 – 2021-12-31139000000 USD20240229Open filing evidence
2020-01-01 – 2020-12-31142000000 USD20230301Open filing evidence

Operating Segments · Crude Oil Segment

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3017760000000 RestatedUSD20260810Open filing evidence
2026-01-01 – 2026-06-3030309000000 RestatedUSD20260810Open filing evidence
2026-01-01 – 2026-03-3112548000000 RestatedUSD20260508Open filing evidence
2025-01-01 – 2025-12-3144131000000 RestatedUSD20260227Open filing evidence
2025-07-01 – 2025-09-3011559000000 RestatedUSD20251107Open filing evidence
2025-01-01 – 2025-09-3033620000000 RestatedUSD20251107Open filing evidence
2025-04-01 – 2025-06-3010622000000 RestatedUSD20260810Open filing evidence
2025-01-01 – 2025-06-3022061000000 RestatedUSD20260810Open filing evidence
2025-01-01 – 2025-03-3111439000000 RestatedUSD20260508Open filing evidence
2024-01-01 – 2024-12-3148720000000 RestatedUSD20260227Open filing evidence
2024-07-01 – 2024-09-3012444000000 RestatedUSD20251107Open filing evidence
2024-01-01 – 2024-09-3036761000000 USD20251107Open filing evidence
2024-04-01 – 2024-06-3012735000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-06-3024317000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-03-3111582000000 RestatedUSD20250509Open filing evidence
2023-01-01 – 2023-12-3147174000000 RestatedUSD20260227Open filing evidence
2023-07-01 – 2023-09-3011934000000 RestatedUSD20241108Open filing evidence
2023-01-01 – 2023-09-3034988000000 RestatedUSD20241108Open filing evidence
2023-04-01 – 2023-06-3011295000000 RestatedUSD20240809Open filing evidence
2023-01-01 – 2023-06-3023053000000 RestatedUSD20240809Open filing evidence
2023-01-01 – 2023-03-3111758000000 RestatedUSD20240510Open filing evidence
2022-01-01 – 2022-12-3155080000000 RestatedUSD20250228Open filing evidence
2022-07-01 – 2022-09-3013675000000 RestatedUSD20231108Open filing evidence
2022-01-01 – 2022-09-3042694000000 RestatedUSD20231108Open filing evidence
2022-04-01 – 2022-06-3015940000000 RestatedUSD20220809Open filing evidence
2022-01-01 – 2022-06-3029019000000 RestatedUSD20220809Open filing evidence
2022-01-01 – 2022-03-3113079000000 RestatedUSD20220510Open filing evidence
2021-01-01 – 2021-12-3140470000000 RestatedUSD20240229Open filing evidence
2021-07-01 – 2021-09-3010701000000 RestatedUSD20221108Open filing evidence
2021-01-01 – 2021-09-3028333000000 RestatedUSD20221108Open filing evidence
2021-04-01 – 2021-06-309779000000 RestatedUSD20220809Open filing evidence
2021-01-01 – 2021-06-3017632000000 RestatedUSD20220809Open filing evidence
2021-01-01 – 2021-03-317853000000 RestatedUSD20220510Open filing evidence
2020-01-01 – 2020-12-3122199000000 RestatedUSD20230301Open filing evidence

Operating Segments · Crude Oil Segment · Product

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=us-gaap:ProductMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-12-3153840000000 RestatedUSD20230301Open filing evidence
2022-04-01 – 2022-06-3015625000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-3028435000000 USD20220809Open filing evidence
2021-01-01 – 2021-12-3139395000000 RestatedUSD20230301Open filing evidence
2021-04-01 – 2021-06-309500000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-3017086000000 USD20220809Open filing evidence
2020-01-01 – 2020-12-3121089000000 RestatedUSD20230301Open filing evidence

Operating Segments · Crude Oil Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2022-04-01 – 2022-06-30315000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-30584000000 USD20220809Open filing evidence
2021-04-01 – 2021-06-30279000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-30546000000 USD20220809Open filing evidence

Operating Segments · Natural Gas Liquids Segment

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3022000000 USD20260810Open filing evidence
2026-01-01 – 2026-06-3061000000 USD20260810Open filing evidence
2026-01-01 – 2026-03-3141000000 USD20260508Open filing evidence
2025-01-01 – 2025-12-31151000000 RestatedUSD20260227Open filing evidence
2025-07-01 – 2025-09-3024000000 USD20251107Open filing evidence
2025-01-01 – 2025-09-3092000000 USD20251107Open filing evidence
2025-04-01 – 2025-06-3026000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-3067000000 USD20260810Open filing evidence
2025-01-01 – 2025-03-3141000000 RestatedUSD20260508Open filing evidence
2024-01-01 – 2024-12-31187000000 RestatedUSD20260227Open filing evidence
2024-07-01 – 2024-09-3020000000 RestatedUSD20251107Open filing evidence
2024-01-01 – 2024-09-30106000000 RestatedUSD20251107Open filing evidence
2024-04-01 – 2024-06-3025000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-06-3086000000 RestatedUSD20250808Open filing evidence
2024-01-01 – 2024-03-31507000000 RestatedUSD20250509Open filing evidence
2023-01-01 – 2023-12-31186000000 RestatedUSD20260227Open filing evidence
2023-07-01 – 2023-09-30242000000 RestatedUSD20241108Open filing evidence
2023-01-01 – 2023-09-301312000000 RestatedUSD20241108Open filing evidence
2023-04-01 – 2023-06-30381000000 RestatedUSD20240809Open filing evidence
2023-01-01 – 2023-06-301071000000 RestatedUSD20240809Open filing evidence
2023-01-01 – 2023-03-31690000000 RestatedUSD20240510Open filing evidence
2022-01-01 – 2022-12-312761000000 RestatedUSD20250228Open filing evidence
2022-07-01 – 2022-09-30770000000 RestatedUSD20231108Open filing evidence
2022-01-01 – 2022-09-302075000000 RestatedUSD20231108Open filing evidence
2022-04-01 – 2022-06-30570000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-06-301304000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-03-31735000000 RestatedUSD20220510Open filing evidence
2021-01-01 – 2021-12-311968000000 RestatedUSD20240229Open filing evidence
2021-07-01 – 2021-09-30166000000 RestatedUSD20221108Open filing evidence
2021-01-01 – 2021-09-301034000000 RestatedUSD20221108Open filing evidence
2021-01-01 – 2021-03-31639000000 RestatedUSD20220510Open filing evidence
2020-01-01 – 2020-12-311360000000 RestatedUSD20230301Open filing evidence

Operating Segments · Natural Gas Liquids Segment · Terminalling Storage And Other

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-3023000000 USD20231108Open filing evidence
2023-01-01 – 2023-09-3074000000 USD20231108Open filing evidence
2022-07-01 – 2022-09-3021000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3066000000 USD20231108Open filing evidence

Operating Segments · Natural Gas Liquids Segment · Transportation

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=pagp:TransportationMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3110000000 USD20240510Open filing evidence
2023-07-01 – 2023-09-307000000 USD20231108Open filing evidence
2023-01-01 – 2023-09-3023000000 USD20231108Open filing evidence
2023-01-01 – 2023-03-318000000 USD20240510Open filing evidence
2022-07-01 – 2022-09-307000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-3023000000 USD20231108Open filing evidence

Operating Segments · Natural Gas Liquids Segment · Product

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=us-gaap:ProductMember
PeriodValueUnitFiledEvidence
2023-07-01 – 2023-09-30201000000 RestatedUSD20231108Open filing evidence
2023-01-01 – 2023-09-301182000000 RestatedUSD20231108Open filing evidence
2022-07-01 – 2022-09-30735000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-301943000000 USD20231108Open filing evidence
2021-07-01 – 2021-09-30133000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-30932000000 USD20221108Open filing evidence

Operating Segments · Natural Gas Liquids Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3149000000 USD20240510Open filing evidence
2023-07-01 – 2023-09-3041000000 USD20231108Open filing evidence
2023-01-01 – 2023-09-30130000000 USD20231108Open filing evidence
2023-01-01 – 2023-03-3155000000 USD20240510Open filing evidence
2022-07-01 – 2022-09-3035000000 USD20231108Open filing evidence
2022-01-01 – 2022-09-30132000000 USD20231108Open filing evidence
2021-07-01 – 2021-09-3033000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-30102000000 USD20221108Open filing evidence

Operating Segments · Segment Facilities

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30226000000 RestatedUSD20211108Open filing evidence
2021-01-01 – 2021-09-30741000000 RestatedUSD20211108Open filing evidence
2021-04-01 – 2021-06-30244000000 RestatedUSD20210806Open filing evidence
2021-01-01 – 2021-06-30515000000 RestatedUSD20210806Open filing evidence
2021-01-01 – 2021-03-31271000000 RestatedUSD20210510Open filing evidence
2020-01-01 – 2020-12-311138000000 RestatedUSD20210301Open filing evidence
2020-07-01 – 2020-09-30271000000 RestatedUSD20211108Open filing evidence
2020-01-01 – 2020-09-30860000000 RestatedUSD20211108Open filing evidence
2020-04-01 – 2020-06-30276000000 RestatedUSD20210806Open filing evidence
2020-01-01 – 2020-06-30589000000 RestatedUSD20210806Open filing evidence

Operating Segments · Segment Facilities · Crude Oil NGL And Other Terminalling And Storage

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ProductOrServiceAxis=pagp:CrudeOilNGLAndOtherTerminallingAndStorageMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31170000000 USD20210510Open filing evidence
2020-07-01 – 2020-09-30178000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30536000000 USD20201106Open filing evidence

Operating Segments · Segment Facilities · NGL And Natural Gas Processing And Fractionation

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ProductOrServiceAxis=pagp:NGLAndNaturalGasProcessingAndFractionationMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-3076000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30265000000 USD20201106Open filing evidence

Operating Segments · Segment Supply And Logistics

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-309623000000 RestatedUSD20210806Open filing evidence
2021-01-01 – 2021-06-3017707000000 RestatedUSD20210806Open filing evidence
2020-01-01 – 2020-12-3122059000000 RestatedUSD20210301Open filing evidence
2020-07-01 – 2020-09-305537000000 RestatedUSD20201106Open filing evidence
2020-01-01 – 2020-09-3016371000000 RestatedUSD20201106Open filing evidence
2020-04-01 – 2020-06-302925000000 RestatedUSD20210806Open filing evidence
2020-01-01 – 2020-06-3010834000000 RestatedUSD20210806Open filing evidence

Operating Segments · Segment Supply And Logistics · Crude Oil Transactions

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ProductOrServiceAxis=pagp:CrudeOilTransactionsMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-309619000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-3017331000000 USD20210806Open filing evidence
2020-07-01 – 2020-09-305394000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3015644000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-302928000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-3010251000000 USD20210806Open filing evidence

Operating Segments · Segment Supply And Logistics · NGL And Other Transactions

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ProductOrServiceAxis=pagp:NGLAndOtherTransactionsMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30285000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30969000000 USD20210806Open filing evidence
2020-01-01 – 2020-12-311149000000 USD20210301Open filing evidence
2020-04-01 – 2020-06-30127000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30555000000 USD20210806Open filing evidence

Operating Segments · Segment Supply And Logistics · Product And Service Other

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30-37000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30-9000000 USD20201106Open filing evidence

Operating Segments · Segment Transportation

Consolidation Items · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30529000000 RestatedUSD20211108Open filing evidence
2021-01-01 – 2021-09-301568000000 RestatedUSD20211108Open filing evidence
2021-04-01 – 2021-06-30553000000 RestatedUSD20210806Open filing evidence
2021-01-01 – 2021-06-301039000000 RestatedUSD20210806Open filing evidence
2020-01-01 – 2020-12-312020000000 RestatedUSD20210301Open filing evidence
2020-07-01 – 2020-09-30494000000 RestatedUSD20211108Open filing evidence
2020-01-01 – 2020-09-301530000000 RestatedUSD20211108Open filing evidence
2020-04-01 – 2020-06-30457000000 RestatedUSD20210806Open filing evidence
2020-01-01 – 2020-06-301036000000 RestatedUSD20210806Open filing evidence

Operating Segments · Segment Transportation · Tariff Activities Crude Oil Pipelines

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesCrudeOilPipelinesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30462000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30859000000 USD20210806Open filing evidence
2020-07-01 – 2020-09-30442000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-301360000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-30405000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30917000000 USD20210806Open filing evidence

Operating Segments · Segment Transportation · Tariff Activities

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30468000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-301437000000 USD20201106Open filing evidence

Operating Segments · Segment Transportation · Tariff Activities NGL Pipelines

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesNGLPipelinesMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-3027000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-3053000000 USD20210806Open filing evidence
2020-07-01 – 2020-09-3026000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3077000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-3026000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-3052000000 USD20210806Open filing evidence

Operating Segments · Segment Transportation · Trucking

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TruckingMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-3020000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-3042000000 USD20210806Open filing evidence
2020-07-01 – 2020-09-3020000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3077000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-3022000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-3057000000 USD20210806Open filing evidence

Operating Segments · Segment Transportation · Product And Service Other

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-306000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3016000000 USD20201106Open filing evidence

Crude Oil NGL And Other Terminalling And Storage · Operating Segments · Segment Facilities

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:CrudeOilNGLAndOtherTerminallingAndStorageMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30143000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30466000000 USD20211108Open filing evidence
2020-07-01 – 2020-09-30178000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30536000000 USD20211108Open filing evidence

Crude Oil NGL And Other Terminalling And Storage · Segment Facilities · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:CrudeOilNGLAndOtherTerminallingAndStorageMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30176000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30357000000 USD20200810Open filing evidence

Crude Oil Transactions · Segment Supply And Logistics · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:CrudeOilTransactionsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3010417000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-3027747000000 USD20211108Open filing evidence
2020-07-01 – 2020-09-305394000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-3015644000000 USD20211108Open filing evidence

NGL And Natural Gas Processing And Fractionation · Operating Segments · Segment Facilities

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:NGLAndNaturalGasProcessingAndFractionationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3068000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30211000000 USD20211108Open filing evidence
2021-04-01 – 2021-06-3070000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30142000000 USD20210806Open filing evidence
2020-07-01 – 2020-09-3076000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30265000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-3080000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30190000000 USD20210806Open filing evidence

NGL And Other Transactions · Segment Supply And Logistics · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:NGLAndOtherTransactionsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30310000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-301279000000 USD20211108Open filing evidence
2020-07-01 – 2020-09-30180000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30736000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-30127000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30555000000 USD20200810Open filing evidence

Rail Load And Unload · Operating Segments · Segment Facilities

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:RailLoadAndUnloadMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-304000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-3024000000 USD20211108Open filing evidence
2020-07-01 – 2020-09-308000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-3030000000 USD20211108Open filing evidence

Rail Load And Unload · Segment Facilities · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:RailLoadAndUnloadMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-308000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3022000000 USD20200810Open filing evidence

Tariff Activities · Operating Segments · Segment Transportation

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TariffActivitiesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30505000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-301417000000 USD20211108Open filing evidence
2021-04-01 – 2021-06-30489000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30912000000 USD20210806Open filing evidence
2020-07-01 – 2020-09-30468000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-301437000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-30431000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30969000000 USD20210806Open filing evidence

Tariff Activities NGL Pipelines · Operating Segments · Segment Transportation

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TariffActivitiesNGLPipelinesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3026000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-3079000000 USD20211108Open filing evidence
2020-07-01 – 2020-09-3026000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-3077000000 USD20211108Open filing evidence

Terminalling Storage And Other · Operating Segments · Crude Oil Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3192000000 USD20240510Open filing evidence
2023-01-01 – 2023-03-3190000000 USD20240510Open filing evidence

Terminalling Storage And Other · Operating Segments · Natural Gas Liquids Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3121000000 USD20240510Open filing evidence
2023-04-01 – 2023-06-3023000000 USD20230809Open filing evidence
2023-01-01 – 2023-06-3052000000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3128000000 USD20240510Open filing evidence
2022-04-01 – 2022-06-3020000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3045000000 USD20230809Open filing evidence

Terminalling Storage And Other · Crude Oil Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2022-07-01 – 2022-09-3090000000 USD20221108Open filing evidence
2022-01-01 – 2022-09-30270000000 USD20221108Open filing evidence
2022-04-01 – 2022-06-3090000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-30180000000 USD20220809Open filing evidence
2021-07-01 – 2021-09-3099000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-30345000000 USD20221108Open filing evidence
2021-04-01 – 2021-06-30116000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-30246000000 USD20220809Open filing evidence

Terminalling Storage And Other · Crude Oil Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30102000000 USD20260810Open filing evidence
2026-01-01 – 2026-06-30197000000 USD20260810Open filing evidence
2025-04-01 – 2025-06-3087000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-30175000000 USD20260810Open filing evidence

Terminalling Storage And Other · Natural Gas Liquids Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2022-07-01 – 2022-09-3021000000 USD20221108Open filing evidence
2022-01-01 – 2022-09-3066000000 USD20221108Open filing evidence
2022-01-01 – 2022-03-3125000000 USD20220510Open filing evidence
2021-07-01 – 2021-09-3022000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-3064000000 USD20221108Open filing evidence
2021-01-01 – 2021-03-3122000000 USD20220510Open filing evidence

Terminalling Storage And Other · Natural Gas Liquids Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-300 USD20260810Open filing evidence
2026-01-01 – 2026-06-302000000 USD20260810Open filing evidence
2025-04-01 – 2025-06-302000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-301000000 USD20260810Open filing evidence

Terminalling Storage And Other Revenue · Operating Segments · Crude Oil Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherRevenueMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-12-31362000000 USD20230301Open filing evidence
2021-01-01 – 2021-12-31431000000 USD20230301Open filing evidence
2020-01-01 – 2020-12-31507000000 USD20230301Open filing evidence

Terminalling Storage And Other Revenue · Operating Segments · Natural Gas Liquids Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherRevenueMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-12-31100000000 USD20230301Open filing evidence
2021-01-01 – 2021-12-3182000000 USD20230301Open filing evidence
2020-01-01 – 2020-12-3196000000 USD20230301Open filing evidence

Terminalling Storage And Other Revenue · Natural Gas Liquids Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-3182000000 USD20220301Open filing evidence
2020-01-01 – 2020-12-3196000000 USD20220301Open filing evidence

Transportation · Crude Oil Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TransportationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2022-07-01 – 2022-09-30185000000 USD20221108Open filing evidence
2022-01-01 – 2022-09-30515000000 USD20221108Open filing evidence
2022-04-01 – 2022-06-30175000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-30330000000 USD20220809Open filing evidence
2021-07-01 – 2021-09-30122000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-30325000000 USD20221108Open filing evidence
2021-04-01 – 2021-06-30113000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-30203000000 USD20220809Open filing evidence

Transportation · Natural Gas Liquids Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TransportationMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2022-07-01 – 2022-09-307000000 USD20221108Open filing evidence
2022-01-01 – 2022-09-3023000000 USD20221108Open filing evidence
2021-07-01 – 2021-09-306000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-3017000000 USD20221108Open filing evidence

Transportation Revenue · Crude Oil Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=pagp:TransportationRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30358000000 USD20260810Open filing evidence
2026-01-01 – 2026-06-30696000000 USD20260810Open filing evidence
2025-04-01 – 2025-06-30340000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-30652000000 USD20260810Open filing evidence

Transportation Revenue · Natural Gas Liquids Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TransportationRevenueMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-3125000000 USD20220301Open filing evidence
2020-01-01 – 2020-12-3129000000 USD20220301Open filing evidence

Trucking · Operating Segments · Segment Transportation

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=pagp:TruckingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3018000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-3060000000 USD20211108Open filing evidence
2020-07-01 – 2020-09-3020000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-3077000000 USD20211108Open filing evidence

Product · Operating Segments · Crude Oil Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-3111176000000 RestatedUSD20240510Open filing evidence
2023-01-01 – 2023-03-3111409000000 RestatedUSD20240510Open filing evidence
2021-01-01 – 2021-12-3139395000000 USD20220301Open filing evidence
2020-01-01 – 2020-12-3121089000000 USD20220301Open filing evidence

Product · Operating Segments · Natural Gas Liquids Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2024-01-01 – 2024-03-31458000000 RestatedUSD20240510Open filing evidence
2023-01-01 – 2023-03-31635000000 RestatedUSD20240510Open filing evidence
2021-01-01 – 2021-12-311829000000 USD20220301Open filing evidence
2020-01-01 – 2020-12-311218000000 USD20220301Open filing evidence

Product · Crude Oil Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2022-07-01 – 2022-09-3013362000000 USD20221108Open filing evidence
2022-01-01 – 2022-09-3041796000000 USD20221108Open filing evidence
2022-01-01 – 2022-03-3112857000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-3139635000000 USD20220301Open filing evidence
2021-07-01 – 2021-09-3010427000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-3027776000000 USD20221108Open filing evidence
2021-01-01 – 2021-03-317726000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-3121250000000 USD20220301Open filing evidence

Product · Crude Oil Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3017290000000 RestatedUSD20260810Open filing evidence
2026-01-01 – 2026-06-3029396000000 RestatedUSD20260810Open filing evidence
2025-04-01 – 2025-06-3010178000000 RestatedUSD20260810Open filing evidence
2025-01-01 – 2025-06-3021185000000 RestatedUSD20260810Open filing evidence

Product · Natural Gas Liquids Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-31845000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-312292000000 USD20220301Open filing evidence
2021-01-01 – 2021-03-31772000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-311350000000 USD20220301Open filing evidence

Product · Natural Gas Liquids Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3020000000 RestatedUSD20260810Open filing evidence
2026-01-01 – 2026-06-3058000000 RestatedUSD20260810Open filing evidence
2025-04-01 – 2025-06-3024000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-3066000000 USD20260810Open filing evidence

Service · Operating Segments · Crude Oil Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-31268000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-311075000000 USD20220301Open filing evidence
2021-01-01 – 2021-03-31267000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-311110000000 USD20220301Open filing evidence

Service · Operating Segments · Natural Gas Liquids Segment

Product Or Service · Consolidation Items · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-3035000000 USD20230809Open filing evidence
2023-01-01 – 2023-06-3089000000 USD20230809Open filing evidence
2022-04-01 – 2022-06-3045000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-3097000000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3153000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-31139000000 USD20220301Open filing evidence
2021-01-01 – 2021-03-3139000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-31142000000 USD20220301Open filing evidence

Service · Crude Oil Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30470000000 USD20260810Open filing evidence
2026-01-01 – 2026-06-30913000000 USD20260810Open filing evidence
2025-04-01 – 2025-06-30444000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-30876000000 USD20260810Open filing evidence
2023-04-01 – 2023-06-30370000000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30720000000 USD20230809Open filing evidence
2022-04-01 – 2022-06-30315000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30584000000 USD20230809Open filing evidence

Service · Natural Gas Liquids Segment · Operating Segments

Product Or Service · Statement Business Segments · Consolidation Items

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-302000000 USD20260810Open filing evidence
2026-01-01 – 2026-06-303000000 USD20260810Open filing evidence
2025-04-01 – 2025-06-302000000 USD20260810Open filing evidence
2025-01-01 – 2025-06-301000000 USD20260810Open filing evidence

Crude Oil Segment

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-3113102000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-3140550000000 USD20220301Open filing evidence
2021-01-01 – 2021-03-317946000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-3122327000000 USD20220301Open filing evidence

Crude Oil Segment · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-3011295000000 RestatedUSD20230809Open filing evidence
2023-01-01 – 2023-06-3023053000000 RestatedUSD20230809Open filing evidence
2023-01-01 – 2023-03-3111758000000 RestatedUSD20230510Open filing evidence
2022-04-01 – 2022-06-3015940000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-06-3029019000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-03-3113079000000 RestatedUSD20230510Open filing evidence

Crude Oil Segment · Operating Segments · Transportation

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TransportationMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-30255000000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30505000000 USD20230809Open filing evidence
2022-04-01 – 2022-06-30175000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30330000000 USD20230809Open filing evidence

Crude Oil Segment · Operating Segments · Product

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-3010925000000 RestatedUSD20230809Open filing evidence
2023-01-01 – 2023-06-3022333000000 RestatedUSD20230809Open filing evidence
2022-04-01 – 2022-06-3015625000000 RestatedUSD20230809Open filing evidence
2022-01-01 – 2022-06-3028435000000 RestatedUSD20230809Open filing evidence

Crude Oil Segment · Terminalling Storage And Other

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-3190000000 USD20220510Open filing evidence
2021-01-01 – 2021-03-31130000000 USD20220510Open filing evidence

Crude Oil Segment · Terminalling Storage And Other · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-04-01 – 2023-06-3094000000 USD20230809Open filing evidence
2023-01-01 – 2023-06-30185000000 USD20230809Open filing evidence
2023-01-01 – 2023-03-3190000000 USD20230510Open filing evidence
2022-04-01 – 2022-06-3090000000 USD20230809Open filing evidence
2022-01-01 – 2022-06-30180000000 USD20230809Open filing evidence
2022-01-01 – 2022-03-3190000000 USD20230510Open filing evidence

Crude Oil Segment · Terminalling Storage And Other Revenue

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherRevenueMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31431000000 USD20220301Open filing evidence
2020-01-01 – 2020-12-31507000000 USD20220301Open filing evidence

Crude Oil Segment · Transportation

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=pagp:TransportationMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-31155000000 USD20220510Open filing evidence
2021-01-01 – 2021-03-3190000000 USD20220510Open filing evidence

Crude Oil Segment · Transportation · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=pagp:TransportationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31250000000 USD20230510Open filing evidence
2022-01-01 – 2022-03-31155000000 USD20230510Open filing evidence

Crude Oil Segment · Transportation Revenue

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=pagp:TransportationRevenueMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-12-31484000000 USD20220301Open filing evidence
2020-01-01 – 2020-12-31570000000 USD20220301Open filing evidence

Crude Oil Segment · Product

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=us-gaap:ProductMember
PeriodValueUnitFiledEvidence
2022-04-01 – 2022-06-3015576000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-3028433000000 USD20220809Open filing evidence
2021-04-01 – 2021-06-309623000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-3017349000000 USD20220809Open filing evidence

Crude Oil Segment · Product · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-3111409000000 RestatedUSD20230510Open filing evidence
2022-01-01 – 2022-03-3112811000000 RestatedUSD20230510Open filing evidence

Crude Oil Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:CrudeOilSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31349000000 USD20230510Open filing evidence
2022-01-01 – 2022-03-31268000000 USD20230510Open filing evidence

Natural Gas Liquids Segment

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-31879000000 USD20220510Open filing evidence
2021-01-01 – 2021-12-312399000000 USD20220301Open filing evidence
2021-01-01 – 2021-03-31801000000 USD20220510Open filing evidence
2020-01-01 – 2020-12-311475000000 USD20220301Open filing evidence

Natural Gas Liquids Segment · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31690000000 RestatedUSD20230510Open filing evidence
2022-04-01 – 2022-06-30570000000 RestatedUSD20220809Open filing evidence
2022-01-01 – 2022-06-301304000000 RestatedUSD20220809Open filing evidence
2022-01-01 – 2022-03-31735000000 RestatedUSD20230510Open filing evidence
2021-04-01 – 2021-06-30230000000 RestatedUSD20220809Open filing evidence
2021-01-01 – 2021-06-30869000000 RestatedUSD20220809Open filing evidence

Natural Gas Liquids Segment · Operating Segments · Product

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductMember
PeriodValueUnitFiledEvidence
2022-04-01 – 2022-06-30525000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-301207000000 USD20220809Open filing evidence
2021-04-01 – 2021-06-30198000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-30798000000 USD20220809Open filing evidence

Natural Gas Liquids Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2022-04-01 – 2022-06-3045000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-3097000000 USD20220809Open filing evidence
2021-04-01 – 2021-06-3032000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-3071000000 USD20220809Open filing evidence

Natural Gas Liquids Segment · Terminalling Storage And Other

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember
PeriodValueUnitFiledEvidence
2022-04-01 – 2022-06-3020000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-3045000000 USD20220809Open filing evidence
2021-04-01 – 2021-06-3021000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-3042000000 USD20220809Open filing evidence

Natural Gas Liquids Segment · Terminalling Storage And Other · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=pagp:TerminallingStorageAndOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-3128000000 USD20230510Open filing evidence
2022-01-01 – 2022-03-3125000000 USD20230510Open filing evidence

Natural Gas Liquids Segment · Transportation

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=pagp:TransportationMember
PeriodValueUnitFiledEvidence
2022-04-01 – 2022-06-307000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-3016000000 USD20220809Open filing evidence
2022-01-01 – 2022-03-319000000 USD20220510Open filing evidence
2021-04-01 – 2021-06-305000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-3012000000 USD20220809Open filing evidence
2021-01-01 – 2021-03-317000000 USD20220510Open filing evidence

Natural Gas Liquids Segment · Transportation · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=pagp:TransportationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-318000000 USD20230510Open filing evidence
2022-01-01 – 2022-03-319000000 USD20230510Open filing evidence

Natural Gas Liquids Segment · Product

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=us-gaap:ProductMember
PeriodValueUnitFiledEvidence
2022-07-01 – 2022-09-30417000000 USD20221108Open filing evidence
2022-01-01 – 2022-09-301761000000 USD20221108Open filing evidence
2022-04-01 – 2022-06-30499000000 USD20220809Open filing evidence
2022-01-01 – 2022-06-301344000000 USD20220809Open filing evidence
2021-07-01 – 2021-09-30386000000 USD20221108Open filing evidence
2021-01-01 – 2021-09-301514000000 USD20221108Open filing evidence
2021-04-01 – 2021-06-30355000000 USD20220809Open filing evidence
2021-01-01 – 2021-06-301128000000 USD20220809Open filing evidence

Natural Gas Liquids Segment · Product · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=us-gaap:ProductMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-31635000000 RestatedUSD20230510Open filing evidence
2022-01-01 – 2022-03-31682000000 RestatedUSD20230510Open filing evidence

Natural Gas Liquids Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:NaturalGasLiquidsSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2023-01-01 – 2023-03-3155000000 USD20230510Open filing evidence
2022-01-01 – 2022-03-3153000000 USD20230510Open filing evidence

Segment Facilities

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30128000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30436000000 USD20211108Open filing evidence
2021-04-01 – 2021-06-30145000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30308000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-31163000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-31622000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30150000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30473000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-30149000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30323000000 USD20210806Open filing evidence

Segment Facilities · Operating Segments Excluding Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ConsolidationItemsAxis=pagp:OperatingSegmentsExcludingIntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2020-07-01 – 2020-09-30150000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30473000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-30149000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30323000000 USD20200810Open filing evidence

Segment Facilities · Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30-99000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30-207000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-31-108000000 USD20210510Open filing evidence
2020-04-01 – 2020-06-30-127000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30-266000000 USD20210806Open filing evidence

Segment Facilities · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30276000000 RestatedUSD20200810Open filing evidence
2020-01-01 – 2020-06-30589000000 RestatedUSD20200810Open filing evidence

Segment Facilities · Operating Segments · NGL And Natural Gas Processing And Fractionation

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:NGLAndNaturalGasProcessingAndFractionationMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3080000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30190000000 USD20200810Open filing evidence

Segment Facilities · Product And Service Other · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentFacilitiesMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3012000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3020000000 USD20200810Open filing evidence

Segment Supply And Logistics

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3010515000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-3028221000000 USD20211108Open filing evidence
2021-04-01 – 2021-06-309623000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-3017706000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-318083000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-3122058000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-305537000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-3016370000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-302925000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-3010833000000 USD20210806Open filing evidence

Segment Supply And Logistics · Operating Segments Excluding Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=pagp:OperatingSegmentsExcludingIntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-309623000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-3017706000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-318083000000 USD20210510Open filing evidence
2020-07-01 – 2020-09-305537000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-3016370000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-302925000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-3010833000000 USD20210806Open filing evidence

Segment Supply And Logistics · Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-300 USD20210806Open filing evidence
2021-01-01 – 2021-06-30-1000000 USD20210806Open filing evidence
2020-04-01 – 2020-06-300 USD20210806Open filing evidence
2020-01-01 – 2020-06-30-1000000 USD20210806Open filing evidence

Segment Supply And Logistics · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-3010515000000 RestatedUSD20211108Open filing evidence
2021-01-01 – 2021-09-3028222000000 RestatedUSD20211108Open filing evidence
2021-01-01 – 2021-03-318083000000 RestatedUSD20210510Open filing evidence
2020-07-01 – 2020-09-305537000000 RestatedUSD20211108Open filing evidence
2020-01-01 – 2020-09-3016371000000 RestatedUSD20211108Open filing evidence
2020-04-01 – 2020-06-302925000000 RestatedUSD20200810Open filing evidence
2020-01-01 – 2020-06-3010834000000 RestatedUSD20200810Open filing evidence

Segment Supply And Logistics · Operating Segments · Crude Oil Transactions

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:CrudeOilTransactionsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-317711000000 USD20210510Open filing evidence
2020-04-01 – 2020-06-302928000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3010251000000 USD20200810Open filing evidence

Segment Supply And Logistics · Operating Segments · NGL And Other Transactions

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:NGLAndOtherTransactionsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31684000000 USD20210510Open filing evidence

Segment Supply And Logistics · Operating Segments · Product And Service Other

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31-312000000 USD20210510Open filing evidence

Segment Supply And Logistics · Product And Service Other · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentSupplyAndLogisticsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30-130000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3028000000 USD20200810Open filing evidence

Segment Transportation

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember
PeriodValueUnitFiledEvidence
2021-07-01 – 2021-09-30133000000 USD20211108Open filing evidence
2021-01-01 – 2021-09-30432000000 USD20211108Open filing evidence
2021-04-01 – 2021-06-30162000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30299000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-31137000000 USD20210510Open filing evidence
2020-01-01 – 2020-12-31610000000 USD20210301Open filing evidence
2020-07-01 – 2020-09-30146000000 USD20211108Open filing evidence
2020-01-01 – 2020-09-30484000000 USD20211108Open filing evidence
2020-04-01 – 2020-06-30151000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30338000000 USD20210806Open filing evidence

Segment Transportation · Operating Segments Excluding Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ConsolidationItemsAxis=pagp:OperatingSegmentsExcludingIntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30243000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30478000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-31234000000 USD20210510Open filing evidence
2020-07-01 – 2020-09-30242000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30774000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-30234000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30532000000 USD20210806Open filing evidence

Segment Transportation · Intersegment Elimination

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ConsolidationItemsAxis=us-gaap:IntersegmentEliminationMember
PeriodValueUnitFiledEvidence
2021-04-01 – 2021-06-30-310000000 USD20210806Open filing evidence
2021-01-01 – 2021-06-30-561000000 USD20210806Open filing evidence
2021-01-01 – 2021-03-31-253000000 USD20210510Open filing evidence
2020-07-01 – 2020-09-30-252000000 USD20201106Open filing evidence
2020-01-01 – 2020-09-30-756000000 USD20201106Open filing evidence
2020-04-01 – 2020-06-30-223000000 USD20210806Open filing evidence
2020-01-01 – 2020-06-30-504000000 USD20210806Open filing evidence

Segment Transportation · Operating Segments

Statement Business Segments · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31487000000 RestatedUSD20210510Open filing evidence
2020-04-01 – 2020-06-30457000000 RestatedUSD20200810Open filing evidence
2020-01-01 – 2020-06-301036000000 RestatedUSD20200810Open filing evidence

Segment Transportation · Operating Segments · Tariff Activities

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31424000000 USD20210510Open filing evidence

Segment Transportation · Operating Segments · Tariff Activities NGL Pipelines

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesNGLPipelinesMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3127000000 USD20210510Open filing evidence

Segment Transportation · Operating Segments · Product And Service Other

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3141000000 USD20210510Open filing evidence

Segment Transportation · Tariff Activities Crude Oil Pipelines · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesCrudeOilPipelinesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-31397000000 USD20210510Open filing evidence
2020-04-01 – 2020-06-30405000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30917000000 USD20200810Open filing evidence

Segment Transportation · Tariff Activities · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-30431000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-30969000000 USD20200810Open filing evidence

Segment Transportation · Tariff Activities NGL Pipelines · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TariffActivitiesNGLPipelinesMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3026000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3052000000 USD20200810Open filing evidence

Segment Transportation · Trucking · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=pagp:TruckingMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3122000000 USD20210510Open filing evidence
2020-04-01 – 2020-06-3022000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3057000000 USD20200810Open filing evidence

Segment Transportation · Product And Service Other · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=pagp:SegmentTransportationMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-304000000 USD20200810Open filing evidence
2020-01-01 – 2020-06-3010000000 USD20200810Open filing evidence