XML 89 R67.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Acquisitions, Divestitures and Other Transactions - Rattler Permian Transaction Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 30, 2023 | Jul. 31, 2022 | Sep. 30, 2023 | Jun. 30, 2023 | Sep. 30, 2022
OMOG JV LLC (“OMOG”) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest in unconsolidated entity prior to acquisition (as a percent) |  |  |  |  | 40.00%
OMOG JV LLC (“OMOG”) | Plains Oryx Permian Basin LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership interest in unconsolidated entity prior to acquisition (as a percent) |  |  |  | 57.00% |
Plains Oryx Permian Basin LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Consolidated subsidiary, ownership interest (as a percent) | 65.00% | 65.00% | 65.00% |  |
OMOG JV LLC and Southern Delaware Gathering Assets |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business acquisition amount, net to our interest in the Permian JV |  |  | $ 191 |  |
Consideration transferred |  |  | 294 |  |
Business combination, consideration transferred, including equity interest in acquire held prior to combination |  |  | $ 532 |  |
OMOG JV LLC and Southern Delaware Gathering Assets | Level 3 | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | Minimum | Intangible Assets |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, measurement input |  |  | 0.21 |  |
OMOG JV LLC and Southern Delaware Gathering Assets | Level 3 | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | Maximum | Intangible Assets |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, measurement input |  |  | 0.23 |  |
OMOG JV LLC and Southern Delaware Gathering Assets | Rattler | Plains Oryx Permian Basin LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration, including working capital and other adjustments |  |  | $ 294 |  |
OMOG JV LLC (“OMOG”) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Additional interest acquired (as a percent) |  |  | 43.00% |  |
Fair value amount |  |  | $ 239 |  |
OMOG JV LLC (“OMOG”) | Plains Oryx Permian Basin LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, step acquisition, equity interest in acquiree, including subsequent acquisition (as a percent) |  |  | 100.00% |  |
Business combination, step acquisition, equity interest in acquire (as a percent) |  |  |  | 57.00% |
OMOG JV LLC (“OMOG”) | Gains/(losses) on investments in unconsolidated entities, net |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Equity interest in acquiree, remeasurement gain |  |  | $ 29 |  |
OMOG JV LLC (“OMOG”) | Level 3 | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business combination, measurement input |  |  | 0.11 |  |
OMOG JV LLC (“OMOG”) | Rattler |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Additional interest acquired (as a percent) |  |  | 43.00% |  |
OMOG JV LLC (“OMOG”) | Rattler | Plains Oryx Permian Basin LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Additional interest acquired (as a percent) |  |  | 43.00% |  |

X
- Definition Amount of consideration transferred reflected on a net basis, representing the entity's proportionate share based on its ownership percentage of the less than wholly owned consolidated subsidiary. + References No definition available. + Details
Name: | pagp_BusinessCombinationConsiderationTransferredNetToOwnershipInterest
Namespace Prefix: | pagp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Measurement Input + References No definition available. + Details
Name: | pagp_BusinessCombinationMeasurementInput
Namespace Prefix: | pagp_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 8 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479637/805-30-30-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 30 -Paragraph 7 -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479637/805-30-30-7 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -SubTopic 30 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g)(1) -SubTopic 10 -Topic 805 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. + References No definition available. + Details
Name: | us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pagp_OMOGJVLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pagp_PlainsOryxPermianBasinLLCMember
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: | us-gaap_BusinessAcquisitionAxis=pagp_OMOGJVLLCAndSouthernDelawareGatheringAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_ValuationTechniqueDiscountedCashFlowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_FiniteLivedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=pagp_RattlerMidstreamOperatingLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=pagp_OMOGJVLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=pagp_GainslossesOnInvestmentsInUnconsolidatedEntitiesNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |