XML 52 R38.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Joint Ventures and Acquisitions - Additional Information (Details) $ in Millions |  | 1 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 31, 2024 Miles Bcf | Jan. 31, 2023 USD ($) | Jun. 30, 2023 USD ($)
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Premium on repurchase of noncontrolling interests, net of tax | [1] |  |  | $ 490.7
Blackcomb Pipeline [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Distance of natural gas pipelines | Miles |  | 365 |  |
Maximum [Member] | Blackcomb Pipeline [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Natural gas processing capacity | Bcf |  | 2.5 |  |
Blackstone Energy Partners [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest in assets |  |  | 100.00% |
Ownership interest |  |  | 25.00% |
Business acquisition, purchase price |  |  | $ 1,050.0 |
Business Acquisition Purchase Price Closing Adjustment |  |  | 41.9 |
Premium on repurchase of noncontrolling interests, net of tax |  |  | $ 490.7 |
Blackcomb Joint Venture [Member] | WPC [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest |  | 70.00% |  |
Blackcomb Joint Venture [Member] | Targa [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest |  | 17.50% |  |
Blackcomb Joint Venture [Member] | MPLX LP [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest |  | 12.50% |  |
WPC Joint Venture [Member] | MPLX LP [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest |  | 30.40% |  |
WPC Joint Venture [Member] | WhiteWater [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest |  | 50.60% |  |
WPC Joint Venture [Member] | Enbridge Inc. [Member] | Subsequent Event [Member] |  |  |  |
Joint Ventures And Acquisitions [Line Items] |  |  |  |
Ownership interest |  | 19.00% |  |
[1] | Represents premium paid on the Grand Prix Transaction. See Note 4 – Joint Ventures and Acquisitions.

X
- Definition Business acquisition, purchase price closing adjustment. + References No definition available. + Details
Name: | trgp_BusinessAcquisitionPurchasePriceClosingAdjustment
Namespace Prefix: | trgp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Distance of natural gas pipelines. + References No definition available. + Details
Name: | trgp_DistanceOfNaturalGasPipelines
Namespace Prefix: | trgp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Joint ventures and acquisitions. + References No definition available. + Details
Name: | trgp_JointVenturesAndAcquisitionsLineItems
Namespace Prefix: | trgp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Natural gas processing capacity in service or under construction. + References No definition available. + Details
Name: | trgp_NaturalGasProcessingCapacityInServiceOrUnderConstruction
Namespace Prefix: | trgp_
Data Type: | dtr-types:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of ownership interest in assets. + References No definition available. + Details
Name: | trgp_PercentageOfOwnershipInterestInAssets
Namespace Prefix: | trgp_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Premium on repurchase of noncontrolling interests, net of tax. + References No definition available. + Details
Name: | trgp_PremiumOnRepurchaseOfNoncontrollingInterestsNetOfTax
Namespace Prefix: | trgp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
- Details
Name: | srt_OwnershipAxis=trgp_BlackcombPipelineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=trgp_BlackstoneEnergyPartnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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