XML 61 R50.htm IDEA: XBRL DOCUMENT
v3.26.1

Partners' Capital and Distributions - Narrative (Details) | 6 Months Ended
--- | ---
Jun. 30, 2026
Series A Preferred Units | PAA |
Partners' Capital and Distributions [Line Items] |
Number of days after end of quarter within which distributions must be paid to unitholders | 45 days
PAA | Common Units And Series A Preferred Units |
Partners' Capital and Distributions [Line Items] |
Noncontrolling interests in subsidiaries (as a percent) | 69.00%
PAA | Class B Shares |
Partners' Capital and Distributions [Line Items] |
Noncontrolling interests in subsidiaries (as a percent) | 100.00%
AAP |
Partners' Capital and Distributions [Line Items] |
Noncontrolling interests in subsidiaries (as a percent) | 15.00%
Permian JV |
Partners' Capital and Distributions [Line Items] |
Noncontrolling interests in subsidiaries (as a percent) | 35.00%
Cactus II |
Partners' Capital and Distributions [Line Items] |
Noncontrolling interests in subsidiaries (as a percent) | 30.00%
Red River |
Partners' Capital and Distributions [Line Items] |
Noncontrolling interests in subsidiaries (as a percent) | 33.00%

X
- Definition The number of days after the end of the relevant quarter within which distributions of available cash must be paid to unitholders. + References No definition available. + Details
Name: | pagp_NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter
Namespace Prefix: | pagp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Partners' Capital and Distributions [Line Items] + References No definition available. + Details
Name: | pagp_PartnersCapitalAndDistributionsLineItems
Namespace Prefix: | pagp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LimitedPartnersCapitalAccountByClassAxis=pagp_SeriesAPreferredUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_OwnershipAxis=pagp_PlainsAllAmericanPipelineLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LimitedPartnersCapitalAccountByClassAxis=pagp_CommonUnitsAndSeriesAPreferredUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LimitedPartnersCapitalAccountByClassAxis=pagp_SeriesBPreferredUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=pagp_PlainsAAPLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=pagp_PlainsOryxPermianBasinLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=pagp_CactusIIPipelineLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=pagp_RedRiverPipelineCompanyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |